ServiceManual96 98
ServiceManual96 98
ServiceManual96 98
Marea-Matea Weekend
Sections
00
Page
Nos.
1-110
1 - 50
1 - 69
10
506.763
With binder
(VI/1996)
18
Comments
4-
53
1 + 48
1 + 24
1 - 27
1 - 29
1 - 27
1 - 17
1 - 35
1 - 15
1 - 77
1 - 69
21-27
33
1 - 54
41
1 - 24
44
1 - 29
00
44
1 - 32
10
506.763/02
3
1 - 30
Technical data
1910 TD - 100 engine fuel system
Removing-refitting 2387 TD engine
Removing-refitting 1910 TD - 100 engine
(VIM/1996)
18
21-27
22
33
Anti-lock brakes
41
Clutch
Removing-refitting gearbox and differential
Cont'
Copyright by Fiat Auto
Summary
Print N
Marea-Marea Weekend
Sections
00
Page
Nos.
6
1 H- 34
506.763/03
(1/1997)
10
4
1 - 24
41
00
1 - 51
506.763/04
(11/1997)
506.763/05
Comments
Introduction - Technical data
1910 TD-75 engine fuel system
Removing-refitting 1910 TD - 100 engine
Removing-refitting 1910 TD - 75 engine
Steering and power assisted steering
Planned maintenance operations
Instructions for dismantling connector for
1747 16v engine anti-evaporation fuel system pipe rapid attachment
10
18/1-18/2
00
24
16
21-24
44
Front suspension
00
20
10
10
10
10
2387 TD engine
10
(IV/1997)
506.763/07
(X/1997)
506.763/08
Summary
Marea-Marea Weekend
4F04SV
Print N
Sections
00
Page
Nos.
31 - 32
45 - 46
506.763/08
29 - 30
(IV/1998)
Comments
Update: Technical data
Update: Adjusting load proportioning valve
33
30/1 - 30/2
Update: Handbrake
Summary
Marea-Marea Weekend
Sections
00
10
506.763
With binder
(VI/1 996)
18
Page
Nos.
1-110
Comments
Introduction - Technical data
1 - 50
1 - 69
1 - 53
1 - 48
1 - 24
1 - 27
1 - 29
1 - 27
1 - 17
1 - 35
1 + 15
1 - 77
21-27
33
1 - 54
41
1 - 24
44
1 - 29
00
44
1 - 69
1 - 32
10
506.763/02
3
1 - 30
Technical data
1910 TD - 100 engine fuel system
Removing-refitting 2387 TD engine
Removing-refitting 1910 TD - 100 engine
(VIM/1996)
18
Clutch
21-27
22
33
Anti-lock brakes
41
Summary
Marea-Marea Weekend
Print N
Sections
00
Page
Nos.
6
1 - 34
506.763/03
(1/1997)
10
4
1 - 24
41
00
1 - 51
506.763/04
(11/1997)
10
18/1-18/2
Comments
Introduction - Technical data
1910 TD-75 engine fuel system
Removing-refitting 1910 TD - 100 engine
Removing-refitting 1910 TD - 75 engine
Steering and power assisted steering
Planned maintenance operations
Instructions for removing the 1747 16v engine fuel anti-evaporation system rapid attachment pipe connector.
Summary
Marea-Marea Weekend
Sections
00
10
506.763
With binder
(VI/1996)
18
Page
Nos.
Comments
1-110
1 - 50
1 - 69
1 - 53
1 - 48
1 - 24
1 - 27
1 - 29
1 - 27
1 - 17
1 - 35
1 - 15
1 - 77
21-27
1 - 69
33
1 - 54
41
1 - 24
44
1 - 29
00
44
1 - 32
10
506.763/02
3
1 - 30
Technical data
1910 TD - 100 engine fuel system
Removing-refitting 2387 TD engine
Removing-refitting 1910 TD - 100 engine
(VIM/1996)
Clutch
18
21-27
22
33
Anti-lock brakes
41
Summary
Marea-Marea Weekend
Print No.
Sections
00
Page
Nos.
6
1 + 34
506.763/03
(1/1997)
10
4
1 - 24
41
Comments
Introduction - Technical data
1910 TD -75 engine fuel system
Removing-refitting 1910 TD - 100 engine
Removing-refitting 1910 TD - 75 engine
Steering and power assisted steering
Summary
Marea-Marea Weekend
Sections
00
10
506.763
With binder
(VI/1996)
18
Number of
pages
1 - 110
1 - 50
1 - 69
1 - 60
1 - 48
1 - 24
1 - 27
1 - 29
1 - 27
1 - 17
1 - 35
1 - 15
1 - 77
21-27
33
1 - 54
41
1 - 24
44
1 - 29
1 - 69
Notes
Preface
Marea-Marea Weekend
This manual contains the main instructions concerning the repair and maintenance of the Fiat Marea
and Fiat Marea Weekend.
The manual is divided into sections distinguished by t w o - d i g i t numbers which correspond to the spare
parts microfiches and the repair time schedule.
The INTRODUCTION AND T E C H N I C A L DATA (00.) Section has the dual function of presenting the
model and supporting the rest of the manual. This Section comprises technical data tables and specific
information relating to the other sections in the manual.
The remaining sections (10. - 1 8 . ecc.) contain descriptions relating to the intervention procedures.
In this manual, graphic representations and symbols are used instead of descriptions of mechanical
parts, operations or methods of intervention.
Bp,
Example:
0
Tighten to torque
ENGINES Section 10 describes the operations for the removal and refitting of the engines,
tions on the car and the fuel system, lubricating system and cooling system.
The overhaul procedures for the individual
lowing publication
numbers:
Engine
Publication no.
Order no.
137012V
504.589/19
604.89.774
1581 16V
504.589/20
604.89.781
1747 16V
504.589/18
604.89.192
1998 20V
504.589/22
604.89.795
1910 TD
504.593/13
604.44.220
2387 T D
504.593/14
604.44.311
The first 4 sections are included in the Petrol Engine Overhaul Manual Volume 3,
the last four are included in the Diesel Engine Overhaul Manual Vo/um 2.
GEARBOXES
opera-
while
Section 27-27 describes the operations for the removal and refitting of the
various gearboxes.
The procedures for the bench overhaul of the various
mechanical gearboxes are published in separate sections with the
following
publication
numbers:
505.023'OS
Included
in Ihu Gnjibux
Overhaul
Manual
Included
Included
volume
T H I S P U B L I C A T I O N IS L O O S E - L E A F SO THAT M O D E L U P D A T E S CAN BE A D D E D .
When using chemical products, closely follow the accident prevention instructions on the safety leaflet which the supplier must give to the user (in Italy in accordance with D.M. no.
46/1992)
Foreword
Marea-Marea Weekend
four cylinders in line, 12 valves, running on unleaded petrol and delivering a power of 59 kW
(80 bhp) at 6000 rpm.
1581 c m
four cylinders in line, 16 valves, running on unleaded petrol and delivering a power of 76 kW
(103 bhp) at 5700 rpm.
1747 c m
four cylinders in line, 16 valves, running on unleaded petrol and delivering a power of 83 kW
(113 bhp) at 5800 rpm.
1998 c m
five cylinders in line, 20 valves, running on unleaded petrol and delivering a power of 108
kW (147 bhp) at 6100 rpm.
1910 T D c m
four cylinders in line, 8 indirect injection valves, running on diesel and delivering a power
of 55 kW (75 bhp) at 4200 rpm.
1910 T D c m
four cylinders in line, 8 indirect injection valves, running on diesel and delivering a power
of 74 kW (100 bhp) at 4200 rpm.
2387 T D c m
five cylinders in line, 20 indirect injection valves, running on diesel and delivering a p o w er of 91 kW (124 bhp) at 4000 rpm.
II
Publication no.
506.763
Marea-Marea Weekend
KjH
ftxJ|
Remove
Disconnect
Exhaust
|J]
Connect
Dismantling
Disassembly
>
Fitting
Reassembly
<i>
Visual check
Check
Warning
Lubricate
Damp
rfl
Surface to be machined
After machining
Interference
Force fit
f l
M|M
MM
Replacement
Original parts
Bleed the
braking system
Vs-,
r^n
P
w
Compression
ratio
tJ
M
Selection
Classes
-"^
(g)
_j _
(f^)
Oversized
O'sized to ....
Maximum
<
Undersized
U'sized to ....
Idling
Rpm
Ratio
Pressure
Temperature
Y
>^<
Temperature < 0 C
Cold
Winter
Temperature > 0 C
Hot
Summer
"Y"^T^y
Windscreen wiper
with pump
washer fluid
Rear w i n d o w wiper
with pump
washer fluid
Dimension to be measurec
Measurement - Check
Thickness - Clearance
Rolling torque
Tolerance
Weight difference
Rotation
liyi
ggwEJg
/aJ
Tighten to torque
plus angle
Adjustment
Regulation
Operation
Preload
Stake nut
Rl
(2)
Tighten to torque
Fully tighten
N H
C I J
Inlet
Refit
KS
Bn^a
HQ
ififi)
Engine
III
Publication no.
506.763
Marea-Marea Weekend
Safety instructions
This manual describes the maintenance operations and normal working procedures carried out in the
workshop.
It contains the specific W A R N I N G S A N D S A F E T Y IIMSTRUCTIOIMSto be carried out to ensure the
safety of the vehicle and that its safety characteristics are maintained, and especially to ensure that operators work safety with no personal risks.
The warnings given are the most important and significant. However, they cannot cover all the risks associated w i t h the operating methods w i t h which repair interventions can be carried out a,nd the relevant
possible consequences.
Any person wishing to carry out maintenance procedures and using tools recommended by Fiat A u t o
must nevertheless make sure that the safety of persons and the vehicle is not put in jeopardy.
A T T E N T I O N : used when insufficient care could cause damage to the vehicle or parts of it.
G E N E R A L WARNINGS
All the operations must be carried out with the maximum attention and care to avoid damage to
the vehicle and persons.
The use of special tools is indicated for some procedures. These tools are essential for w o r k ing safely and to avoid causing damage to the parts involved in the procedure.
If necessary, mark all electrical wires and pipes to avoid reconnection errors.
s To detach parts which are stuck to each other, use an aluminium or lead hammer for ferrous
materials, and a wooden or resin hammer for light alloy parts.
Protect adequately with adhesive tape or rags all parts of the engine w h i c h , left uncovered
after dismantling, present entry passages for dust or foreign bodies.
Safety instructions
Marea-Marea Weekend
m During refitting, lubricate the parts, where necessary, to prevent seizure or stiffness during
the initial operating period.
When refitting, it is essential to observe the tightening torques and any other adjustment data.
When refitting, it is essential to reposition correctly and carefully wiring, piping and heat
shields.
During reassembly, replace seals, oil sealing rings, spring washers, safety plates, self-locking
nuts and all parts that may be damaged.
Safety supports
Ensure that the car CANNOT IN ANY way slide off the supports and fall while you are working.
Make sure that the jacks and safety supports have been fitted correctly.
Apply the handbrake and lock the rear wheels to prevent the car sliding off the safety supports.
If necessary r e m o v e t h e engine, gearbox and other heavy units, and check that the lifting hooks have
been fitted correctly. Do not go under raised components.
Protection of fittings
Remove or cover the interior fittings of the car (upholstery, instruments, carpets).
Cover glass, instruments, upholstery and carpets with heat-resistant materials before undertaking
welding operations.
VI
Publication no.
506.763
Marea-Marea Weekend
Safety instructions
P R O T E C T I N G THE E N V I R O N M E N T
N EVER discharge the liquids contained in the vehicle (engine oil, gearbox oil, brake fluid, etc.) in the
sewerage network or other environments, but comply w i t h current regulations concerning correct
disposal.
DO NOT discharge refrigerant from the air conditioning system into the open air, as it could be d a n gerous to the environment. Use only the special equipment to drain the system.
Do not abandon batteries or other components containing chemicals in the environment; instead
scrap them correctly.
Chemicals: regarding the use of chemicals, closely follow the legislation in each country.
O P E R A T I O N S IN T H E ENGINE C O M P A R T M E N T
The engine compartment contains several moving parts, parts at high temperature and high-voltage
cables which could be dangerous.
Do
Do
Do
Do
not
not
not
not
Engine oil
Do not dispose of oil in the sewereage network or other environments, but conform to current regulations concerning correct disposal of waste oil.
Engine oil is harmful to skin: reduce the contact of oil with the skin to a minimum; in the case of c o n tact wash with soap and water.
Coolant
When the engine is hot, the fluid in the cooling system is under pressure. To avoid leaks of boiling
coolant, do not open the cap until the engine is cold.
When pouring coolant, take care not to pour it on electrical or painted parts. If coolant is spilled, clean
it off immediately.
VII
Safety instructions
Marea-Marea Weekend
Brake fluid
Avoid leakage of brake fluid on painted surfaces, as the paint could be damaged; if the fluid is accidntally spilled onto paint, remove immediately with water.
Before proceeding with refitting, make sure that dust and other impurities have been cleaned off all
the parts.
Some versions are fitted with a safety system comprising an Al R BAG cushion located on the
steering wheel and another on the passenger's side of the dashboard.
In addition, there may be seat belt pretensioners on the front seats.
WARNING
These devices contain a PYROTECHNIC CHARGE:
there are therefore particular provisions concerning their correct handling; these instructions are described in detail in this manual: see "Section 55 - Electrical system".
The maintenance, dismantling or replacement of these components requires particular care and the
use of specific methods and equipment, requiring the exclusive intervention of specially trained staff.
Particular attention should also be given to operations on compnents located NEAR the above-mentioned devices.
BODYWORK
Protective clothing
Make sure that the following are used, depending on the operations t o be carried out:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Work cap
Ear defenders
Welding gloves
Gloves
Protective
shoes
Protective visor
Boiler suit
Dust mask
Protective
goggles
P4F08PV01
Publication no.
506.763
Safety instructions
Marea-Marea Weekend
When welding
Make sure to disconnect the battery before starting any repair work.
If welding has to be carried out near the fuel tank, the fuel vapour separator or the fuel vapour filter,
remove the latter from their seatings.
Plug open pipe connections for fuel, fuel vapours and brake fluid pipes when the connections are disconnected.
Remove electronic
control
out
electric-arc
welding
on
the
vehicle.
Working environment
The environment must be well ventilated and lit, to ensure the safety of operators.
As paints and sealants, if heated, can emit toxic gases, use a saw or pneumatic chisel in preference to an
oxyacetylene torch for cutting and removing damaged metal panels.
To remove paint from the metal panels, use a band sander or rotary brush.
Flammable materials
Before using these materials, make sure that you have disconnected the battery.
NO
P4F09PV01
IX
Safety instructions
Marea-Marea Weekend
AIR C O N D I T I O N E R
The coolant which accidentally leaks out of the air conditioning system or the emptying/filling device
may become toxic if it is very close to naked flames or in the presence of certain metals (for example
magnesium or aluminium) in the form of fine particles or powder. It is therefore appropriate to work
in the absence of naked flames and in ventilated environments with the extraction system
switched on.
Avoid prolonged contact w i t h the skin of fluid at the evaporation stage as the low temperature (approx. -25 C) can cause "scalding" because of excessive cold. It is therefore appropriate to use
leather or thick fabric gloves.
It is also essential to protect the eyes from contact with fluid at low temperature. Always wear protective goggles.
To empty the system, only use the equipment indicated in the manual.
The fluid is stored under pressure in metal cylinders; never expose the cylinders to sun rays for prolonged periods: the increase in temperature increases the pressure, which could exceed the safety
limit. Never leave the charging station cylinder completely full for prolonged periods. Never overturn
the cylinder during pouring.
Publication no.
506.763
Safety instructions
Marea-Marea Weekend
ELECTRICAL SYSTEM
Before undertaking any activity to electrical components, adopt and closely follow the precautions below:
Disconnect the battery whenever wiring has to be removed or when delicate operations have to be
carried out on the electrical system.
Do not fast charge the battery, except after disconnecting the earth cable, so as not to damage the alternator diodes.
Never try to turn the engine w i t h the battery's earth cable loose, in order not to cause serious damage
to the wiring.
When working on the car's electrical system, never pull wires or wiring using force, as the wires could
be inadvertently disconnected from the connectors or terminals.
Disconnect all the control units and electronic devices when carrying out arc welding on the body
shell.
When replacing fuses, make sure that the new fuse is of the correct rating. Do not use fuses of a h i g h er or lower rating.
BE CAREFUL: E L E C T R I C ARCS:
B E C A R E F U L : HIGH V O L T A G E S :
BE CAREFUL: F I R E S :
do not smoke when working near the battery or c o m p o nents which heat up during use (e.g. halogen bulbs), or inside the engine compartment when the engine is still hot.
ALSO take the utmost care to avoid burns or damage to
tools or components.
XI
Safety instructions
Marea-Marea Weekend
SYMBOLS
PLATES are fitted to some components of the vehicle with appropriate symbols for drawing the operators' attention to certain precautions or behaviour w h i c h is recommended or even required mandatorily.
The following table gives these plates w i t h the component concerned and the meaning of the symbol:
DANGERS:
SYMBOL
COMPONENT
Battery
MEANING
Corrosive liquid
P4F12PV01
Battery
P4F12PV02
Battery
Explosion
Electric fan
Coolant
reservoir
Ignition coil
High voltage
P4F12PV03
A
P 4F12PV04
A
P 4F12PV06
A
P (F12PV06
A s
P JF12PV07
A
P
XII
Publication no.
506.763
Marea-Marea Weekend
Safety instructions
NOT P E R M I T T E D :
COMPONENT
SYMBOL
MEANING
Battery
Heat shields
Belts - Pulleys
Electric fans
P4F13PV01
<s>
P4F13PV02
P4F13PV03
WARNINGS:
SYMBOL
COMPONENT
Engine oil
MEANING
p 4F13PV04
Power steering
e
p 4F13PV05
Brake fluid
p 1F13PV06
Catalytic converter
p<IF13PV07
Windscreen wiper
p<1F13PV06
XIII
; .
'
:"
'."
-' ,
'..,
" '.
- '. .
" - Index
0 0 H
INTRODUCTION
-
Car exterior
Identification data
Weights
Performance - Fuel consumption
.Dimensions
Capacities
Characteristics of Fiat Lubricant products
1
2
4
6
8
10
11
T E C H N I C A L DATA
.
'.
12
13
14
19
20
25
26
29
30
E N G I N E I^ITDI^PITD
- Characteristics
. 3 4
/ - Typical curves
.
35
- Cylinder block/crankcase, crankshaft
and associated components
36
- Counter balance shafts "
43
- Cylinder head assembly and valve gear
components
40
- Lubrication
44
- Cooling system - Fuel system
46
- Fuel system
47
- Supercharging
51
CLUTCH
52
G E A R B O X AND D I F F E R E N T I A L
55
AUTOMATIC GEARBOX
- DIFFERENTIAL
57
BRAKING S Y S T E M
58
STEERING
61
WHEELS
62
FRONT S U S P E N S I O N
64-67
REAR S U S P E N S I O N
66-69
ELECTRICAL EQUIPMENT
70
- Starting
.
- Recharging
- Electronic injection/ignition
72
76
78
SPECIAL TOOLS
82
TIGHTENING TORQUES
94
Marea-Marea Weekend
Introduction
Car exterior
OO.o
introduction
Marea-Marea Weekend
Identification data
OO.o
GEARBOX
ENGINE
182 A3.000
12V
VERSION
MAREA
185 AX A 1 A 0 0
185 BX A 1 A 0 4
185 AX B1A01
185 AX B 1 A 0 1 B ( A )
185 AX B 1 A 0 1 C ( 1 )
182 A4.000
lev
185 BX B 1 A 0 5
185 BX B 1 A 0 5 B ( A )
185 BX B 1 A 0 5 C ( A )
185 AX B11 08
185 BX B11 12
185 AX C1A02
185 AX C 1 A 0 2 B ( A )
1 82 A2.000
185 AX C 1 A 0 2 C ( B )
185 BX C1A 06
185 BX C 1 A 0 6 B ( A )
185 BX C 1 A 0 6 C ( B )
185 AX D 1 A 0 3
l i f e
IWsaMf
20V
182 A1.000
185 AX D 1 A 0 3 B ( B )
185 BX D1A07
185 BX D 1 A 0 7 B ( B )
| ^ |
S i
TD 75
1 82 A8.000
TD 100
182 A7.000
rn
185 A2.000
185 A X F 1 A 1 0
185 AX F1A 14
185 AX E1A09
185 BX E1A 13
185 BX G1A 11
185 BX G1A 15
()
I X - 9 7 - Cancels a n d replaces
MAREA
WEEKEND
HI
CHASSIS
Print no.
506.763307
Introduction
Marea-Marea Weekend
Identification data
OO.o
A.
B.
C.
A
B
tr
E
F
G
H
C
o
12-
F.
D
Kg
K9
Kg
Kg
G.
o
M 0 T 0 R E - ENGINE
VERSIONE-VERSION
S
A.
B.
C.
D.
E.
H.
I.
L.
M.
N.
Name of manufacturer
Homologation number
Vehicle type identification code
Chassis manufacture number
Maximum authorized weight of vehicle fully
laden
Maximum authorized weight of vehicle fully
laden plus t o w
Maximum authorized weight on first axle
(front)
Maximum authorized weight on second axle
(rear)
Engine type
Bodywork version code
Spares number
Correct value of smoke coefficient (only for
diesel engines)
Introduction
Marea-Marea Weekend
Weights
OO.o
|^^^|
)^3t
12V
16V
16V
C.A.
Marea
1085
1140
1165
1195
Marea
Weekend
1145
1200
1225
1255
1675
1730
1755
1785
1740
1795
1820
1850
1000
1000
1000
1000
1000
1000
1000
1000
80
80
80
80
70
70
70
70
400
400
400
400
1200
1200
1200
1200
ENGINE T Y P E
W E I G H T S (in kg)
0 1
16V
20V
Marea
IflS
+ 5 9 0 = IS (P fll 15115
n,0|
(575)*
n n n n
^
Marea Weekend
+ 5 9 5 = IS IB IB IB IB
(580)*
n n b n
Without braking
system
With braking
system
Loads which must never be exceeded
(*) Specific values for 1998 20v version
Introduction
Marea-Marea Weekend
Weights
OO.o
101
101
ENGINE T Y P E
TD 75
TD100
TD
Marea
1185
1190
1295
Marea
Weekend
1245
1250
1355
1775
1780
1885
1840
1845
1950
1000
1000
1000
1000
1000
1000
80
80
80
70
70
70
Without braking
system
400
400
400
W i t h braking
system
1300
1300
1400
W E I G H T S (in kg)
Marea
iiO|
- t M M
Marea Weekend
+595
Introduction
Marea-Marea Weekend
OO.o
0 |
ENGINE TYPE
^ ^ ^ ^ ^ ^
(*)
12V
16V
45
101
16V
0 i
16V
20V
46
49
56
81
80
85
87
118
124
125
129
164
169
C.A
MAX
187
(185)*
156
173
172
(170)*
187
(185)*
195
(193)*
207
(205)*
46
46
49
51
Marea
34
36
32
38
39
weekend
31
33
30
35
36
Marea
9,2
9,7(9,6)
11,1
9,9(10)*
11,1
Marea Weekend
9,4
9,7(9,6)*
11,1
10,1(10,2)*
11,1
Marea
5,4
5,7(5,5)*
5,9
5,9(5,6)*
7,0
Marea Weekend
5,5
5,9(5,7)*
6,1
6,0(5,7)*
7,2
Marea
7,1
7,5(7,2)*
7,7
7,6(7,1)*
8,6
Marea Weekend
7,2
7,8(7,5)*
8,0
7,8(7,3)*
8,8
Marea
7,2
7,6(7,4)
8,2
7,8(7,6)*
8,9
Marea Weekend
7,4
7,8(7,6)*
8,4
7,9(7,7)*
9,0
Marea
11,6
11,3
13,8
11,5(11,2)*
14,2
Marea Weekend
11,9
11,5
For M a r e a W e e k e n d v e r s i o n
% ^ ^ ^ 5 j w
Fuel consumption
directive 80/1268/CEE
(*)
(litres/100 km)
Pendenza
laden
Urban
cycle ( A )
C o n s t a n t speed
90 kph (B)
C o n s t a n t speed
120 kph (C)
Average c o n s u m p t i o n
( C C M C proposal)
M I" D
3
Urban
Fuel consumption
directive 93/116/CE
(litres/100 km)
Extra-urban
Combined
14,1
11,8(11,5)*
14,3
6,1
6,6(6,5)*
8,3
6,6(6,3)*
7,3
6,3
6,6(6,5)*
8,5
6,8(6,5)*
7,4
Marea
8,1
8,3(8,2)*
10,3
8,4(8,1)*
9,8
Marea Weekend
8,4
8,4(8,3)*
10,6
8,6(8,3)*
9,9
Marea
193
197(195)*
246
199(192)*
234
Marea Weekend
199
200(198)*
251
205(198)*
237
Marea
Marea Weekend
T h e f u e l c o n s u m p t i o n f i g u r e s a c c o r d i n g t o d i r e c t i v e 93/116/CE h a v e b e e n d e f i n e d i n t h e c o u r s e o f h o m o l o g a t i o n t e s t s
k r a a l \ t i r t p n c y c l e w h i c h i n c l u d e s a c o l d start f o l l o w e d b y a v a r i e d u r b a n c y c l e s i m u l a t i o n .
- an e x t r a - u r b a n c y c l e w h i c h i n c l u d e s f r e q u e n t a c c e l e r a t i o n i n a l l gear s s i m u l a t i n g n o r m a l o u t o f t o w n u s a g e . T h e s p e e d v a r i e s
b e t w e e n 0 a n d 1 20 k p h .
- T h e a v e r a g e c o m b i n e d c o n s u m p t i o n i n c l u d e s 37% o f t h e u r b a n c y c l e a n d 63% o f t h e e x t r a - u r b a n c y c l e .
T h e t y p e o f j o u r n e y , traffic c o n d i t i o n s , d r i v i n g s t y l e s , a t m o s p h e r i c c o n d i t i o n s , t r i m l e v e l / e q u i p m e n t / a c c e s s o r i e s , w h e t h e r a r o o f
rack is f i t t e d , t h e presence o f s p e c i a l e q u i p m e n t a n d t h e g e n e r a l s t a t e o f t h e v e h i c l e c a n lead t o f u e l c o n s u m p t i o n f i g u r e s w h i c h
differ f r o m t h o s e obtained t h r o u g h t h e a b o v e m e n t i o n e d procedures.
T h e CO2 e x h a u s t e m i s s i o n s ( i n g / k m ) are m e a s u r e d d u r i n g t h e a v e r a g e c o m b i n e d c y c l e
()
( * ) See s p e c i f i c f i g u r e s at t h e f o o t o f t h e n e x t p a g e
I X - 9 7 - Cancels a n d replaces
Print no.
506.763/07
Introduction
Marea-Marea Weekend
OO.oo
10)
ENGINE T Y P E
10)
TD 75
TD100
TD
36
36
36
62
62
61
96
96
101
135
135
141
167
(165)'
180
(179)'
195
(193)*
36
36
34
Marea
37
40
41
Weekend
34
37
38
Marea
7,6
7,6
8,1
Marea Weekend
7,9
7,9
8,4
Marea
4,5
4,5
5,2
Marea Weekend
4,6
4,6
5,4
Marea
6,5
6,5
7,0
Marea Weekend
6,6
6,6
7,1
Marea
6,2
6,2
6,8
Marea Weekend
6,4
6,4
6,9
Marea
8,5
8,7
8,7
10,2
10,3
6,0
Marea Weekend
5,1
5,3
6,4
6,5
8,9
5,4
5,6
6,7
6,8
Marea
169
176
199
Marea Weekend
173
180
203
Fuel consumption
directive 80/1268/CEE
(litres/100 km)
Marea
Urban
cycle ( A )
Constant speed
90 k p h ( B )
Constant speed
kph (C)
120
Average c o n s u m p t i o n
( C C M C proposal)
A + B + C
Urban
Fuel consumption
directive 9 3 / 1 1 6 / C E (*)
(litres/100 km)
Marea Weekend
Marea
Extra-urban
Marea Weekend
Marea
Combined
6,1
7,5
7,7
T h e f u e l c o n s u m p t i o n f i g u r e s a c c o r d i n g t o d i r e c t i v e 8 0 / 1 2 6 8 / C E E h a v e b e e n d e f i n e d i n t h e c o u r s e of o f f i c i a l t e s t s a n d i n a c c o r d a n c e w i t h p r o c e d u r e s e s t a b l i s h e d b y l e g a l r e g u l a t i o n s . In p a r t i c u l a r , t h e b e n c h t e s t s m e a s u r e s i m u l a t e d u r b a n c y c l e f i g u r e s
w h i l s t c o n s u m p t i o n a t c o n s t a n t s p e e d s o f 9 0 a n d 1 2 0 k p h are m e a s u r e d d i r e c t l y o n a f l a t , d r y r o a d a n d i n e q u i v a l e n t b e n c h t e s t s .
(*)
S e e s p e c i f i c f i g u r e s at t h e f o o t o f p a g e 6
I X - 9 7 - Cancels a n d replaces
Introduction
Marea
Dimensions
OO.o
-1
F
Volume of luggage compartment (VDA standards): 430 d m
The height refers to an unladen car
DIMENSIONS (mm)
Engine type
1^1 12V
883
2540
955
4378
1473,5
1444,5
1741
1420
ffi>
883
2540
955
4378
1473,5
(1461,5)*
1444,5
(1432,5)*
1741
1420
883
2540
955
4378
1461,5
1432,5
1741
1420
883
2540
955
4378
1461,5
1432,5
1741
1420
883
2540
955
4378
1461,5
1432,5
1741
1415
883
2540
955
4378
1473,5
1444,5
1741
1420
883
2540
955
4378
1473,5
(1461,5)*
1444,5
(1432,5)*
1741
1420
883
2540
955
4378
1461,5
1432,5
1741
1415
16V
16V C.A.
1^116V
TD 7 5
iffil TD 100
Print no.
506.763/07
Introduction
Marea Weekend
Dimensions
OO.o
F
Volume of luggage compartment (VDA standards):
- with rear seat in normal usage position: 500 d m
- with rear seat folded over: 1540 d m
P4F<H>9AOI
DIMENSIONS ( m m )
Engine type
1^1
12V
883
2540
1061
4484
1473,5
1444,5
1741
1500
16V
883
2540
1061
4484
1473,5
(1461,5)*
1444,5
(1432,5)*
1741
1500
16V C.A.
883
2540
1061
4484
1461,5
1432,5
1741
1500
883
2540
1061
4484
1461,5
1432,5
1741
1500
883
2540
1061
4484
1461,5
1432,5
1741
1495
883
2540
1061
4484
1473,5
1444,5
1741
1500
883
2540
1061
4484
1473,5
(1461,5)*
1444,5
(1432,5)*
1741
1500
883
2540
1061
4484
1461,5
1432,5
1741
1495
1^1161/
I g j l j 20V
I^Pl TD
75
| ^ | TD 100
V I I - 9 6 - Cancels a n d ieplac.es
Introduction
Marea-Marea Weekend
Capacities
OO.o
Capacities
Quantity
dm (l) (kg)
Unit
Petrol ^ O.R. 95
Unleaded
Diesel
1370-1581-1747-1998
63
1910 T D - 2 3 8 7 TD
63
1370
50%
6(5,6B)
1581
7(6,4B)
1747
6,7(6,2B)
1 9 1 0 T D 75
+
Total capacity
of cooling system
1910 TD 100
3,55(6,8B)
3,3(6,551
1998
7,35(7,21
2387 TD
1370
4,3
1581
4,5
1747
4,6
4,1
1998
5,5
4,7
1910 TD 75
4,7
4,2
Petrol engines:
Total capacity
SELENIA 20K
(SAE 10 W / 4 0 )
I,5(6,5B)
4,35
1910 T D 100
5,8
2387 TD
Diesel engines
SELENIA
Turbo Diesel
(SAE 15 W / 4 0 )
Partial capacity
(periodic replacement)
4,1 ( 3 , 9 * ) ) 3 , 7 ( 3 , 5 * ) )
1581
3,8(3,5*); 3,4(3,1 )
1747
4,3(3,9*)) 3,85(3,5*)
5(4,5*))
4,45 (4 ;
1910 TD
4,5(4,2*)
4(3,75*))
2387 TD
5,3(5*)
4,7(4,4*))
1,7
1,5
1998
1581-1998
1,8
2387 TD
b = TUTELA
GI/2
5B
a =
.1.
5,1
1370
1370-1747-1910 TD
TUTELA
a = ZC 75 Synth
3,8
4,3
1581
3,9
TUTELA
Gl/A
0,8
TUTELA
MRM2
0,003
w/out
ABS
TUTELA
TOP 4
(270C)
Total capacity
with
ABS
0,40
0,45
3%
AREXONS
( A ) Distilled water
10
10C
50%
20C
100%
6,8
Print no.
506.763/07
Bonn
Service News
F i a t A u t o
10/97
s.p.A
00
Various models
models: Fiat Bravo-Fiat Brava - Rat Marea - Fiat barchetta - Coupe Hat
0010 T 1 2 0 A A
15.97
CHANGING ENGINE O I L
Service literature update with n e w oil capacity figures
Cancels and replaces the subject in question published in Service News 4/97 through the variation
of the figures for the Fiat Bravo TD, Fiat Brava TD and Fiat Marea TD
TYPE OF PROBLEM
The oil capacity figures in the "Owner's Handbook" and the Service Manuals are not consistent
with actual capacities of the engine.
O P E R A T I O N S IN T H E NETWORK
When changing the engine oil stick t o the figures given below w h i c h update the corresponding
ones in the Service Manual and the Owner's Handbook.
Provide the Customer w i t h appropriate information on the subject, as necessary.
Model/version
Engine sump,
filter and pipes
(1st filling)
dm
Engine sump
dm
Kg
Engine sump
and oil filter
Kg
dm
3,5
3,5
3,5
3,1
3,1
3,1
3,8
3,8
3,8
3,4
3,4
3,4
Kg
4,5
4,5
4,5
4,0
4,0
4,0
4,6
4,6
4,6
4,1
4,1
4,1
3,9
3,9
3,9
3,5
3,5
3,5
4,3
4,3
4,3
3,85
3,85
3,85
Fiat barchetta
Coupe Fiat 1.8
4,7
5,0
4,2
4,5
3,7
4,0
3,3
3,6
4,0
4,4
3,6
3,9
00.15.97
Various models
0010 T 120 AA
CHANGING ENGINE OIL
212
Model/version
Engine sump.
filter and pipes
(1st filling)
dm
Fiat
Fiat
Fiat
Fiat
5,8
Engine sump
Kg
dm
4,2
4,2
4,2
4,2
3,75
3,75
3,75
3,75
4,5
4,5
4,5
4,5
4,0
4,0
4,0
4,0
5,0
4,4
5,3
4,7
Kg
dm
4,35
4,35
4,2
4,35
5,1
Engine sump
and oil filter
Kg
Service News
Copyright
4/97
by Fiat Auto
Fiat A u t o S . p . A
D.M.C. - M.P.S. - Servizi Post Vendita.
Tecnologie Assistenziali
00
Various models
models: Fiat Bravo-Fiat Brava - Fiat Marea - Fiat barchetta - Coupe Fiat
0010 T 1 2 0 AA
15.97
CHANGING E N G I N E O I L
service literature update with new oil figures.
30
TYPE OF PROBLEM
The oil figures given in the "Owner's Handbooks" and the Service Manuals are not consistent w i t h
the actual engine capacities
O P E R A T I O N S IN T H E N E T W O R K
When changing the engine oil, refer to the figures given below which update the corresponding
figures given in t h e Service Manual and the Owner's Handbook.
Please provide the Customer w i t h suitable information on this subject, as appropriate.
Model/version
IF10D7
Engine sump
Kg
dm
dm
Kg
4,5
4,5
4,5
4,0
4,0
4,0
3,5
3,5
3,5
3,1
3,1
3,1
3,8
3,8
3,8
3,4
3,4
3,4
4,6
4,6
4,6
4,1
4,1
4,1
3,9
3,9
3,9
3,5
3,5
3,5
4,3
4,3
4,3
3,85
3,85
3,85
Fiat barchetta
Coupe Fiat 1.8
4,7
5,0
4,2
4,5
3,7
4,0
3,3
3,6
4,0
4,4
3,6
3,9
00.15.97
Various models
0010 T 120 AA
CHANGING ENGINE OIL
2/2
Model/version
Engine sump
Kg
dm
4,2
4,2
4,2
5,2
5,9
Engine sump
oil filter
3
and
Kg
dm
4,2
4,2
4,2
3,75
3,75
3,75
4,5
4,5
4,5
4,0
4,0
4,0
5,0
4,4
5,3
4,7
Kg
Marea-Marea Weekend
Introduction
Characteristics of Fiat Lubricant products
OO.o
Name of
product
Description
International designation
Semi-synthetic multigrade engine oil grade SAE 10W40.
S E L E N I A 20K
Exceeds specifications ACEA A3-96/CCMC G5 and API SH
Application
Temperature
- 25C - 40C
Temperature
- 15C -H 40C (*)
T U T E L A ZC75 S Y N T H
Manual gearboxes
and differentials
TUTELA W90/MDA
SAE 80 W / 9 0 EP oil for normal and self-locking differentials. Satisfies standards MIL-L-2105 D and API GL5
Hypoid differentials
Self-locking differentials
Steering boxes
TUTELA Gl/A
TUTELA GI/2
Automatic
gearboxes
T U T E L A MRM2
T U T E L A MR3
SELENIA
Turbo
Diesel
.._,.
SAE 15 W/40
Hydraulic
brakes
hyd. op. clutches
and
K 854
Lithium soap based grease, consistency NLGI = 000, containing molybdenum disulphide
SP 349
Arexons DP1
Paraflu
11
Cooling circuits
Percentage to be used
50% up to - 35C
To be mixed with diesel
fuel (25 cc per 10 litres)
(*) For temperatures below -15C use SAE 10W40 grade oils
11
Technical data
Marea-Marea Weekend
Engine
OO.io
12V
16V
CHARACTERISTICS
OTTO 4 stroke
Cycle
single overhead
Timing
Type of fuel system
cam
Number of cylinders
Cylinder liner
(bore)
mm
82
86,4
82
82
Stroke
mm
64,87
67,4
82,7
75,65
cc
1370
1581
1747
1998
l|
= 9
Capaciity
Compression
ratio
100,15
kW
(CV)
59
(80)
76
(103)
83
(113)
108
(147)
rpm
6000
5750
5800
6100
daNm
(kgm)
11,2
(11,4)
14,4
(14,7)
15,4
(15,7)
18,6
(19)
rpm
2750
4000
4400
4500
Max.
power
CEE
Max.
torque
CEE
12
V I I - 9 6 - Cancels a n d replaces
Print no.
506.763/02
Marea-Marea Weekend
Technical data
Engine: typical curves
OO.io
CV kW
1000
2000
3000
4000
5000
6000
7000
rpm
13
Technical data
Marea-Marea Weekend
OO.io
DESCRIPTION
Values in mm
21,72-21,80
21,72-21,80
22,14-22,20
0.
HP
01
38,700-38,730
02
35,036-35,066
Dflj
Auxiliary shaft
bush housings
82,000-82,010 86,400-86,410
82,000-82,010
B 82,010-82,020 86,410-86,420
82,010-82,020
82,020-82,030 86,420-86,430
82,020-82,030
-0
Cylinder bore
14
Marea-Marea Weekend
Technical data
OO.io
12V
DESCRIPTION
Values in mm
X
A
0
Piston
12,5
13,2
81,952-81,962
B 81,959-81,971 86,359-86,371
81,959-81,971
C 81,968-81,978 86,368-86,378
81,968-81,978
0,4
Piston
Cylinder bore
12,5
81,952-81,962 86,352-86,362
Difference in weight
between pistons
3-1
IfEEEIj20V
16V
:5g
0,038 -
0,058
0,039 -
0,061
0,042 - 0,062
Gudgeon pin
housing
Gudgeon pin
4-3
*~^| P
20,002-20,007 21,997-22,001
20,002-20,007
19,996-20,000 21,990-21,995
19,996-20,000
0,2
0,002 -
Piston ring
grooves
0,011
1,540-1,560
1,525-1,545
1,540-1,560
1,520-1,540
1,530-1,550
1,510-1,530
1,530-1,550
1,510-1,530
3,020-3,040
3,010-3,030
3,020-3,040
3,010-3,030
15
Technical data
Marea-Marea Weekend
OO.io
DESCRIPTION
Values in mm
1,475-1,490
1,470-1,490
1,475-1,490
5
Piston rings
c j
Piston rings
c3j p
5-1
Ot p
* H
Opening at end of
piston rings
in cylinder bore
02
16
4h
^JL^
^
1,470-1,490
1,475-1,490
>
0,050-0,090
0,035-0,075
0,050-0,085
0,030-0,065
0,040-0,075
0,020-0,060
0.040-0,075
0,020-0,055
0,075-0,105
0,065-0,095
0,030-0,065
0,020-0,055
0,250-0,500
0,200-0,450
0,300-0,500
0,300-0,500
0,250-0,500
0,300-0,500
0,400-1,400
0,400-1,400
2,935-2,945
2,975-2,990
0,4
0,250-0,450
0,250-0,500
01
22,939-22,972 23,939-23,972
02
22,939-22,972
Marea-Marea Weekend
Technical data
OO.io
mi v
2
DESCRIPTION
| 16V
16V
20V
Values in mm
01
23,007-23,027 24,016-24,041
23,007-23,027
20,006-20,012 22,004-22,010
20,006-20,012
Gudgeon pin
Small end bush
0,006 - 0,020
0.035 : 0.088
0,035 0,088
02
Small end bush
4-7
7-6
0.044 0.102
^2
3
52,982-52,988 59,982-59,988
02
40,872-40,878
26,975-27,025
L
Li
Crankshaft bearings
26,575-26,625
26,575-26,625
1,836-1,840
1,840-1,844
1,836-1,840
1,839-1,843
1,845-1,849
1,839-1,843
1,842-1,846
0
9-8
1,842-1846
0,254 - 0,508
0.025-0,052
0,019 0,050
0,025-0,052
17
Technical data
Marea-Marea Weekend
OO.io
DESCRIPTION
Values in mm
Big end
bearings
L <
10
0
10-8
11
H
Q
1,536-1,540
1,535-1,541
1,527-1,531
1,536-1,540
1,539-1,543
1,540-1,546
1,530-1,534
1,539-1,543
1,542-1,546
1,533-1,537
1,542-1,546
<
~LT|
J ii
Thrust
washers
0,254 - 0,508
0.030-0,056
0,025-0,063
0,030-0,056
2,342-2,358
2,310-2,360
2,342-2,358
0,127
Crankshaft end float
18
0,059-0,161
0,055-0,265
0,059-0,161
Technical data
Marea-Marea Weekend
OO.io
Iil3| 16V
Values in mm
DESCRIPTION
hO
0,
r^ ""
35,664 + 35,684
23
Bushes for auxiliary shaft in
housing
102
24
32,000 4- 32,020
35,593 - 35,618
shaft
bear-
31,940 - 31,960
Shaft bushes
Bushes
24-23
T
Auxiliary
ings
23-1
0,046 :- 0,091
1
0,040 - 0,080
19
Technical data
Marea-Marea Weekend
00.10
20V^^
Values in mm
DESCRIPTION
Camshaft supports in cylinder head
I^Pl 12V
OTTO
26,045-26,070
26,045-26,070
19,100-19,150
19,100-19,150
12b
W20V
IS
Valve guide bore in
cylinder head
Valve
seat
12,950 + 12,977
45 5'
83
45 5'
about 2
Volume of combustion
chamber in cylinder
head
cm
37,5
39
39
Print no.
506.763
Marea-Marea Weekend
Technical data
OO.io
12V
16V
DESCRIPTION
l(Pl
16V
20V
Values in mm
. n
r-uU~L
ur^i_p-oj^
T a
P - housing in
cyl. head
14,000-14,027
33,000-33,025
7,022 - 7,040
01> ~l
Valve guide
13
-0
13,010 - 13,030
02'
13-12
0,033 - 0,080
6,982-7,000
6,975-6,990
0 2
30,200-34,500
33,400-37,700 29,900-30,200
01
"HQ
n
14
4530' 5'
Valve
01
0 2
6,982-7,000
6,974-6,992
4530' 5'
14-13
Valve
Valve guide
6,960-6,975
0,022-0,058
0,022-0,058
0,032-0,065
0.030 : 0.066
0,047-0,080
9,61-10,6 daN 11,08-12,07daN
15
20
H2
Pi
Hi
29,5
20,11-22,07daN 21,58-23,54daN
16
29,5
ill
Hi
H7
37
P7 55,42-60,53 daN
H7
28,1
20
27,07-29,43 daN
32
34
46-49,93 daN
48,46-52,38 daN
23,5
24,5
21
Technical data
Marea-Marea Weekend
OO.io
Values in mm
DESCRIPTION
Camshaft bearings
01
29,944-29,960
02
52,400-52,415
03
52,800-52,815
04
53,200-53,215
05
53,600-53,615
16V
0!
17a
03
,5
16V
| 0
17b
0
,0
,0
i0
i0
i0
17c
17a
17b
26,000-26,015
19,250-19,330
19,250-19,330
7,5
8,9
Cam lift
Camshaft
bearings
Cylinder head
supports
22
26,000-26,015
|0
83
8,9
8,5
7,5
radial
0,030-0,070
0,030-0,070
axial
0,100-0,230
0,100 - 0,230
Marea-Marea Weekend
Technical data
OO.io
12V
10
|0
n T n T "
4
T"
pTjT_^-jnjn_^n -^jnj~v-^JTJ |
J
01
29,989-30,014
02
52,445-52,470
03
52,845-52,870
04
53,245-53,270
05
53,645-53,670
30,000-33,025
_,
r-u\S~1_
i_r^L_T-T_J^-
Tappet housings
Camshaft bearings
17-18 Qj p Camshaft
housing supports
r a r
19
LJ
19-12
19-18
0,030-0,070
_ L
- ^
L T '
Tappet
Oj p
Tappet
ousing in cylinder head
c> p
Hh
Tappet - Housing
camshaft housing
17-20
clearance for
timing check
20V
Values in mm
DESCRIPTION
18
16V
16V
operational clearan
in
32,959-32,975
13,972-13,984
0,025 - 0,066
0,016-0,055
0,025-0,066
HQ
0,45
83
0,45
83
Hydraulic tappets
23
Technical data
Marea-Marea Weekend
OO.io
TIMING DIAGRAMS
16V
12V
miev
20V
Timing angles
opens before
TDC
9 (*)
closes after
BDC
30
39
27
49 (*)
opens before
BDC
34
31
29
27
after TDC
Inlet
B
C
Exhaust
D
(*) With phase transformer on:
24
closes after
TDC
2
before TDC
A - opens BTDC = 9
B - closes A B D C = 3 1 '
Print no.
506.763
Technical data
Marea-Marea Weekend
OO.io
DESCRIPTION
25
Values in mm
01
19,900 - 20,000
02
46,989 - 47,000
19,980 - 19,993
46,975 - 47,000
27
Ball bearings for counter-balance shaft
25
\0
\0
27-1
5^
25-27 3 ^
^
^
Ball bearings
Cylinder block seats
+0,011 - - 0,025
Shaft bushes
Ball bearings
-0,020 ^
0,003
25
Technical data
Marea-Marea Weekend
Engine: lubrication
OO.io
|^p|
n^9|i v
12V
LUBRICATION - Description
Values in mm
Oil pump
through crankshaft
Pump operated
incorporated in
crankshaft front cover
0,080 - 0 , 1 8 6
0,025 - 0,070
0,025 - 0,061
jk
Full f l o w filter
cartridge
electrical
idling 1 bar
at 4000 rpm 4 bar
Hi
26
|_i
1
36
Print no.
506.763
Marea-Marea Weekend
Technical data
Engine: lubrication
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L U B R I C A T I O N - Description
Values in mm
forced circulation via geared pump
w i t h cartridge oil filter in series
gears
Pump operated
Full f l o w filter
cartridge
electrical
11HI
^Ku^^^^U
llnll^Hi^
^jy^^^^J
^^"'^Bj
r-i
0,110 - 0,180
0,040 - 0,106
-++-%
r~-| |
rr
0,015 - 0,048
01-02
0,016-0,048
^ 01-02
-4Oi p
wW
0,30
idling > 1 bar
at 4000 rpm > 4,5 bar
Hi
Hp
Pi
Hi
22,5
P2
H2
21
27
Technical data
Marea-Marea Weekend
Engine: lubrication
OO.io
LUBRICATION
Values in mm
forced circulation, via geared pump with cartridge oil filter in series
Oil pump
Pump operated
cartridge
electrical
II: ifl^^|l
I K ^ S H I B P
llnl^^l 1^
Ifiy^fl^J
Oi p
* b
0,110 + 0,180
0,016 - 0,086
t n e
0,30
idling 1 bar
at 4000 rpm 4 bar
Operating pressure
at a temperature of 100C
_ A
Pi
tI
Hi
u
28
11,73 - 12,51
35
Print no.
506.763
Marea-Marea Weekend
Technical data
Engine: cooling system - fuel system
OO.io
l S | l 6 t
20V
COOLING S Y S T E M
coolant circulation via centrifugal pump, radiator,
expansion tank and electric fan operated by thermostatic switch
Cooling circuit
/mm+\ 1
ft
q|
II
through belt
Thermal
switch
\^~V
to engage
fan (*)
8 1
s t
s t a
90 - 94C
<>
J *
2nd stage
95 - 99C ( )
1st stage
85 - 89C
( StOD 1
P
'
90 - 94C ( )
2nd stage
opening
Engine coolant
thermostat
81 - 85C
opening
101-105C
9,5 mm
valve travel
Fitting clearance between
impeller vanes and pump casing
()
(*)
99-103C
Oi O
*
98-102C
ior-i05c
^ 7 , 5 mm
9,5 mm
0,3-1,1 mm
0,98
0,98 bar
bar
FUEL SYSTEM
Type
Bosch
Monomotronic
SPI integrated
electronic
injection/
ignition
Pump
Weber-Marelli
I.A.W.
M P I integrated
electronic
injection/
ignition
Capacity
Fuel pressure regulator setting
CHECKING IDLE CONCENTRATION O F POLLUTANT EMISSIONS
Upstream of the catalytic converter
Downstream of the catalytic converter
HITACHIeBosch Motronic
M P I integrated M P I i n t e g r a t e d
electronic
electronic
injection/
njection/ignitior
ignition
^ 1 2 0 l/h
1 bar
3 bar
CO (%)
HC (p.p.m.)
c o (%)
0,4 - 1
<600
^12
^0,35
^90
^13
29
Technical data
Marea-Marea Weekend
OO.io
INTEGRATED E L E C T R O N I C I N J E C T I O N / I G N I T I O N
SYSTEM COMPONENTS
Bosch 0.261.203.868
Bosch 0.438.201.523
Bosch 0.281.002.102
Bosch 0.280.142.300
Detonation sensor
Bosch 0.261.231.007
Bosch 0.280.130.026
Bosch 0.580.453.514
Lambda sensor
Bosch 0.258.003.805
Fuel filter
Bosch
30
I X - 9 7 - Cancels a n d replaces
Print no.
506.763/07
Marea-Marea Weekend
Technical data
Engine: fuel system
OO.io
INTEGRATED ELECTRONIC
S Y S T E M COMPONENTS
INJECTION/IGNITION
Manual gearbox
I.A.W.-1AF.15
I.A.W.-1AF.1G
()
Auto, transmission
I.A.W.-1AF.25
I.A.W.-1AF.2G
()
M. Marelli PRT 0 3 / 0 2
SIEMENS EC1
M. Marelli 54 CFA 26
Butterfly casing
M. Marelli B02
M. Marelli B 2 5 / 0 0 ( )
Injector
JAEGER A T S - 0 4
M. Marelli RPM 4 0
JAEGER CVM 01
M. Marelli PF 1C
M A R W A L L MSS 0 7 1 / 0 3
Lambda sensor
NTK 0ZA112-A1
Fuel filter
Bosch A.450.024.262
Timing sensor
Ignition coils
()
()
31
Technical data
Marea-Marea Weekend
OO.io
INTEGRATED E L E C T R O N I C I N J E C T I O N / I G N I T I O N
SYSTEM COMPONENTS
Electronic control unit
HITACHI MFI-009
HITACHI GE 109381
Injector
HITACHI GL 212264
RPM 4 0 / 3 bar
Bosch 0.280.130.055
WALBRO MSS 071/01
Lambda sensor
NTK 0ZA112-A3
Fuel filter
G.M. 25121074
Idle actuator
HITACHI GL 326716
HITACHI GL 326686
BOSCH 0.280.142.300
HITACHI GE 107765 oppure
HITACHI GE 108958
HITACHI GE 108835
NGK KNE 03
Timing sensor
Bosch B.232.070.023
Butterfly casing
HITACHI GL 007817
32
Print no.
506.763/08
Marea-Marea Weekend
Technical data
Engine: fuel system
OO.io
INTEGRATED ELECTRONIC
S Y S T E M COMPONENTS
20V
INJECTION/IGNITION
Butterfly casing
Bosch 0.261.204.381
Bosch 0.280.160.515
Injector
Bosch 0.280.150.443
Bosch 0.280.140.553
Bosch 0.580.453.408
Air f l o w meter
Bosch 0.280.217.111
Fuel filter
Bosch A.450.024.262
Bosch 0.280.122.001
Bosch 0.280.130.026
Lambda sensor
Bosch 0.258.003.772
Bosch 0.280.142.300
Detonation sensor
Bosch 0.261.231.095
Bosch 0.232.101.026
Bosch 0.280.130.073
Bosch 0.281.002.102
33
Technical data
Marea-Marea Weekend
OO.io
| | p | TD 75
TD 100
TD
CHARACTERISTICS
Cycle
Diesel 4 stroke
Timing
Engine balancing
Type of fuel system
Indirect injection
Number of cylinders
0
-0
Cylinder liner
(bore)
Stroke
BHHHH
PI
= 9
i|
Capaciity
4 in line
5 in line
mm
82
mm
90,4
2387
1910
cc
Compression
ratio
20,7 0,5
kW (CEE)
(CV) (CEE)
55
(75)
74
(100)
91
(124)
rpm
4200
4200
4000
daNm (CEE)
(kgm) (CEE)
14,7
(15)
20
(20,4)
26,5
(27)
2750
2250
2000
Max power
Max torque
rpm
34
V I I - 9 6 - Cancels a n d replaces
Print no.
506.763/02
Technical data
Marea-Marea Weekend
OO.io
c v kW
CEE CEE
85-i
60-
CV
CEE
lOO-i
50-
90
55- 40-
80
45-
70-1
30352515-
TDIOO
TD 75
7565-
kW
CEE
60
N-m
kgm
CEE
CEE
2050
101000
40
30
CV
CEE
kW
CEE
Test speed
(rpm)
800-1000
1500
2000
Time in
minutes
Load
on the
brakes
10'
10'
10'
no load
no load
no load
35
Technical data
Marea-Marea Weekend
OO.io
11
o
10
TD
DESCRIPTION
Values in mm
i->H<21,720 -H 21,800
56,705 - 56,718
63,705 + 63,718
A_
0<
Cylinder bore
82,000 - 82,010
82,010 - 82,020
82,020 + 82,030
10
81,930 - 81,940
31
0<
81,940 - 81,950
81,950 - 81,960
Piston
0
3-1
ir
Piston projection
Diff. in weight
between pistons
3-1
36
Of
Piston
Cylinder bore
0,4
0,637 -
1,162
5 g
0,060 + 0,080
Print no.
506.763
Marea-Marea Weekend
Technical data
OO.io
I TO
DESCRIPTION
TD
Values in mm
Gudgeon pin
housing
25,991 - 25,996
is
Piston ring
grooves
2,010 -H 2,030
3,020 + 3,040
Gudgeon pin
4-3
0,
25,982 - 25,987
0,2
0,004 + 0,014
2,575 + 2,595 (**)
1,970 -
1,990
2,975 - 3,010
Piston rings
0
0,4
0,080 - 0,130
5.3
5^
Piston rings
Piston ring grooves
(-)
0,020 + 0,060
0,010 + 0,065
0 , 2 0 0 - 0,400
>-|
5-1
Opening at end of
piston rings
in cylinder bore
0,250 - 0,500
0,250 - 0,500
Technical data
Marea-Marea Weekend
OO.io
11
10
TD
DESCRIPTION
ft
TD
Values in mm
Small end bush or
pin housing
01
28,939 + 28,972
Big end
bearing housing
02
53,897 + 53,909
01
02
ESU
-2^4^rence
2,5 g
01
02
29,018 - 29,038
26,006 + 26,01 2
&
4-7
Gudgeon pin
Small end bush
7-6
0,019 + 0,030
0,046 + 0,099
housing
A
01
52,988
c
8
Crank
pins
02
52,994 - 53,000
A
B_
c
52,994
52,982 + 52,988
59,994 + 60,000
59,988
59,994
59,982 + 59,988
50,799 - 50,805
50,793
50,799
50,787 - 50,793
26,575 - 26,625
38
Print no.
506.763
Marea-Marea Weekend
Technical data
OO.io
I TO
DESCRIPTION
Values in mm
1,836 -
1,840
1,839 -
1,843
1,842 -
1,846
Crankshaft bearings
9-8
0,254 - 0,508
Big end
bearings
10
0
11
0,025 : 0.052
10-8
A_
1,527 -
1,531
1,530 -
1,534
<
O i l
TD
Thrust
washers
1,533 - 1,537
0,254 - 0,508
0,030 - 0,056
2,342 - 2,358
Lr^
0,127
11-8
39
Technical data
Marea-Marea Weekend
OO.io
17
12
16
20
1
14
19
TD
DESCRIPTION
Values in mm
TD
13,950 - 13,977
HQ
45 5'
45 5'
about 2,7
Valve seats
Camshaft supports
12
p__n__TL_n_n
26,045 + 19,070
(*)
19,100 - 19,150
37,000 - 37,025
"0
L
^J-UU~L
>-jL_J
r >'
Tappet housing
5iP
01
0 , ^ 1
Valve guide
13
0,
"02
0,
8,022 - 8,040
14,010 - 14,030
0,05 - 0,10 - 0,25
Print no.
506,763
Marea-Marea Weekend
Technical data
OO.io
TD
DESCRIPTION
Values in mm
Valve guide
Bore in cylinder head
13-12
01
0,033 - 0,080
7,974 + 7,992
37,30 - 37,60
4 5 3 0 ' 7'
14
Valve
0
7,974 + 7,992
30,90 - 31,20
"02
a
14-13
4 5 3 0 ' 7'
0,030 - 0,066
36,7 - 39,6 daN
16
Hi
36
56 - 61 daN
Valve spring
17
26,5
26,000 - 26,01 5
19,250 + 19,330
Camshaft bearings
17-12
^p
0,030 : 0,070
axial
0,100 - 0,230
HQ
17
Cam lift
..n
L_T^
^_r-uIT~L
8,5
8,5
|_J~<-rt_r~-r-*
Tappet
19-12
radial
36,975 - 36,995
0,005 - 0.050
41
Technical data
Marea-Marea Weekend
OO.io
17
12
20
3
16
19
14
|| TD
DESCRIPTION
-n
o
n
20
Values in mm
^-nnn_.
^ -4-T ^
17-20
TD
c Shim
u -
0+
1
3,25
0,05
clearance for
timing check
operational clearano
4,70
0,50
0,50
HQ
B T
-H
0,30 0,05
0,35 0,05
32-12
Variation between
te-chamber plane
cylinder head plane
anand
0,150 - -0,300
TIMING DIAGRAMS
ft
w
A
Timing
angles
42
(
i
u
B
Inlet
Exhaust
40
o p e n s before
TDC
closes after
BDC
26
o p e n s before
BDC
26
closes after
TDC
Print no.
506.763
Technical data
Marea-Marea Weekend
OO.io
DESCRIPTION
Values in mm
n 1
25
through oil pump driven gear
Shaft operated
01
19,900 + 20,000
4P
02
46,989 + 47,000
4 -
19,980 - 19,993
46,975 + 47,000
27
25
27-1
25-27
^
*h
Ball bearings
Cylinder block seatfc
+0,011 - - 0,025
Shaft bearings
Ball bearings
+0,020 + - 0,003
43
Technical data
Marea-Marea Weekend
Engine: lubrication
OO.io
j^|
TD
Values in mm
LUBRICATION
lobe gears
Pump operated
through crankshaft
incorporated in the
crankshaft front cover
J *
^
0,080+0,186
0,025+0,056
J
[
3 1
|B<
Full flow filter
cartridge
electrical
&
Hi
u
44
36
Print no.
506.763
Marea-Marea Weekend
Technical data
Engine: lubrication
OO.io
Values in mm
LUBRICATION
Oil pump
Pump operated
liDM^JU
^^^HB^^
0,110 - 0,180
^So^SW^J
0,016 + 0,086
'1
^^"^^BB^^
l
cartridge
electrical
Q p
* k
0,30
Hi
u
35
45
Technical data
Marea-Marea Weekend
OO.io
)^^}
IfPlTD
TD 100
TD 75
COOLING S Y S T E M
coolant circulation via centrifugal pump, radiator
and two speed electrical fan operated by thermostatic switch
Cooling circuit
Water pump operation
through belt
@
(~\
^ |
ill
Thermal
switch
to engage
fan
S i
\ ^ ~ /
"
1 st speed
2nd speed
86 + 90C
90+94C
81+85C
85 + 89C
(stopj
78 + 82C
opening
Engine coolant
thermostat
86+90C
opening
7,5 mm
valve travel
Fitting clearance between
impeller vanes and pump casing
c> p
I*
0,53+1,37 mm
0,78 bar
0,78 bar
h:
?: :| !
FUEL S Y S T E M
Firing order
1 - 3 - 4 - 2
Bosch VER-679
1 - 2 - 4 - 5 - 3
Lucas DPC-FT09
Bosch VER-560
LCD-011R02AA1 (*)
LCR-67342
Bosch
VER SV 0.216.138
Nozzle type
Bosch DN 0 SD 321
Lucas
RDN-SDC6888D
Bosch
DN 12 SD 290
1 5 0 + 1 5 8 bar
143+150 bar ()
138-150 bar ( )
1-50+158 bar
0,92 mm
Electronic
adjustment
0,75 mm
8 3 0 + 8 7 0 rpm
rpm
5000+5100
4920+5020
5050+5150
46
IV-98
Print no.
506.763/08
Marea-Marea Weekend
^ T D
Technical data
OO.io
DATA F O R C H E C K I N G BOSCH I N J E C T I O N PUMP T Y P E V E R 679
S P E C I F I C T E S T CONDITIONS
G E N E R A L T E S T CONDITIONS
- Test oil: ISO 4113
- Bosch injectors 1.688.901.022
- Injectors: Bosch 1.688.901.922
- Temperature of test oil: 45 1C (reflux
1510) set at 130 + 133 bar
outlet )
- Piping: 2x6x450 mm.
- Pump entry pressure: 0,35 bar
- Rotation: clockwise
(DNO
SD
bar
Capacity
per
element
mm /cycle
Max discr.
btwn ind.
flow rates
mm /cycle
Reduction
of total
travel
mm
2,4+3,8
5,4+6,4
1500
5,1+6,3
6,8+7,8
Max
2100
8,2+9,6
8,3 + 9,3
Max
600
39,3+43,9
Max
1000
40,3+44,9
Max
1500
41 +45
<2,5
Max
2100
41,3+45,9
Max
2400
26,2+36,2
Max
2600
8,4+18,4
10
Max
2800
<3
11
Max
100
50+80
12
Max
400
52+72
13
Max
525
55+65
Reflux
cap. ( )
14
Max
600
15+31 l/h
15
Max
2100
2 0 + 5 0 l/h
Idling
16
Min
425
10,3+18,3
<2,5
Residual flow
17
rate
Min
500
<3
Stop
<3
P. MAX
(0,20,1)
Q. MAX
(101)
Adjustment
lever
position
Rotation
speed
rpm
Advance
check
mm
Transfer
pressure
Max
1000
Max
Type of
check
Advance
Capacity
Starting
(enrichment)
End of
enrichment
()
18
Min
425
Delay
device (LFB)
19
1500
20
1500
0,7 : 0,9
F i x e d a d v a n c e (after e n g i n e T D C ) = 0 , 9 2 0 , 0 0 5 m m
E l e c t r i c a l s t o p c o n t r o l : m i n i m u m operating v o l t a g e 8 V . R a t e d voltage 11+13 V
M a x i m u m f r e e running engine s p e e d : 5 0 5 0 5 0 r p m .
E n g i n e idle s p e e d : 8 5 0 2 0 r p m .
( ) Fuel return from the pump to the tank.
( ) To be carried out w i t h the electrical stop control switched off.
47
Technical data
Marea-Marea Weekend
^TDIOO
OO.io
L U C A S FT09 I N J E C T I O N
P U M P T E S T D A T A F O R 1910 T D 100 E N G I N E
Test oil: I S O 4 1 1 3 ( S H E L L S - 9 3 6 5 )
T e m p e r a t u r e of test oil: 4 0 1 C
Injectors ISO 9 0 0 8 - 0 2 5 A
Injector setting 1 3 0 ^ 1 3 3 bar
Injectors R D N O S D C 6 8 7 6
Type of check or adjustment
(seen f r o m
control side)
- I n j e c t i o n p i p i n g : 2,5 x 6 ' 3 3 0 m m
- Engine
idle
85020 rpm
speed
. Fitting: 0 1 w i t h cyl. n 1
at T D C
- M a x free r u n n i n g engine
speed: 5 0 0 0 5 0 rpm
Advance
check
Max
Electrical supply
Max
Max
Hydraulic continuity
check
Max
1000
Max
2000
Dynamic fitting
Max
1500
Max
2530
194
Regulator intervention
check
Max
2330
4054
Max
2100
56,52
7,50,5
10
Max
1250
55,42
4,50,5
Supercharging operation
start
11
Max
750
40,22,5
1,50,5
12
Max
750
Q12-Q11
= 11 2
Supercharging gradient
48
Print no.
506.763
Marea-Marea Weekend
Technical data
HTDIOO
OO.io
Av. capacity
per cyl. mm /cycle
Advance
check
7
750
55,03
Max
450
35,04
15
Max
100
42,08
S u p e r c h a r g i n g pressure 0 bar
16
Min
450
6,52
17
Min
450
12,02
Regulator status
18
Min
400
(Q16 + 9 ) 4
Levers pulled
Anti-stall capacity
19
Min
450
4,51,3
Recirculation capacity
20
Max
2100
1 0 ^ 4 0 l/h
Supply stop
21
Max
400
<3,0
13
Max
14
Rotation
speed rpm
S u p e r c h a r g i n g pressure 1 bar
49
Technical data
Marea-Marea Weekend #1
OO.io
DATA FOR C H E C K I N G BOSCH I N J E C T I O N PUMP T Y P E V E R 560
G E N E R A L T E S T CONDITIONS
- Test oil: ISO 4113
- Temperature of test oil: 451C (reflux
outlet )
- Pump entry pressure: 0,35 bar
- Rotation - clockwise
S P E C I F I C T E S T CONDITIONS
- Bosch injectors 1.688.901.022
- Injectors: Bosch 1.688.901.922 (DNO SD
1510) set at 130-M 33 bar
- Piping: 2 x 6 x 4 5 0 mm
- Control panel type HM5-1-1
Rotation
speed
rpm
Advance
check
mm
Uist
voltage
mV
500
4,8+6,8
3000
1250
6,6+8,2
2250
Duty cyle
TV%
3000
< 3,0
1850
100
2250
9,4+10,2
3000
100
3290
48 - 6 4
100
400
1850
3,7--8,3
< 3
100
500
3000
50,7- -55,3
1250
2310
33- -36
< 3
2250
3000
61,4- -65,4
Reflux
capacity ( )
2250
3000
2 0 + 5 0 l/h
Stop()
1000
3000
< 3
Type of
check
Advance
Capacity
Capacity per
element
mmVcycle
50
Technical data
Marea-Marea Weekend
Engine: supercharging
OO.io
S U P E R C H A R G I N G Turbocharg^erate^au^sf^ste-gatelayBa/aBat
exchanger (intercooler)
IHI
Garrett GT 15
Turbocharger type
Maximum supercharging pressure
VL6
1,05 bar
51
Technical data
Marea-Marea Weekend
Clutch
OO.io
|^|
I0
12V
16V
lev
TO
20 v
TD
Values in mm
Type
dry, single plate with bearing
Operating mechanism
diaphragm spring
Spring loading
daN
360
400
500
485
600
190
200
215
215
228,6
130
137
145
145
155
Lining
Distance
between
pedal in end of travel
position and rest position
Clutch release
52
Clutch pump
operation
Operating
cylinder
163
136
mechanical
hydraulic
16,05
(3/4")
25,4
0")
Print no.
506.763
Marea-Marea Weekend
Technical data
Gearbox and differential
OO.io
j^pPj
2QV
w
60
C.514.5.13
Type
C.513.5.13
C.510.5.17
C.510.5.21
GEARBOX
F L c
d
Synchronizers
00
spring
(Porsche type)
1
I
baulk ring
type
>pN
/ ^ v
i i
s straight
1 toothed
f|S
\M
) helical
\ ^ toothed
/ill
W K
ffi>
3,909
2,238
2,158
Gear ratios
1,480
1,444
1,121
1,029
0,902
0,872
(0,838)
3,818
()
3,545
1,520
(1,444)
1,156
(1,029) # j
0,946
(0,872)
1,520
1,156
0,919
3,909
53
Technical data
Marea-Marea Weekend
00.21-27
12V
16V
161/
20V
4,071
(14,57)
3,823
(17/65)
(3,765)
3,562
(16/57)
(3,353)
3,562
(16/57)
15,914
14,944
(14,717)*
13,924
(13,107)*
1 2,627
8,786
8,556
(8,426)
7,972
(7,504) i
7,972
6,025
5,520
(5,437)
5,414
(4,842)1
5,414
4,564
3,934
(3,874)
4,118
(3,450)1
4,118
3,672
3,334
(3,155)
3,370
(2,924)1
3,273
15,543
14,944
(14,717)
13,924
(13,107)
13,924
DIFFERENTIAL
Ratio
crown
wheel & pinion
reduction
n
Lr
Ratio at the wheels
by shims
1,70-2,60
0,05
mm
0,10
Thickness of shims
Interference
to
obtain exact bearing pre-loading
mm
2,00 + 3,00
LUX
< 0,10
mm
Clrnce between planet & satellite gears
no
adjustment is
carried out
IkX
no adjustment is carried
out
by shims
(fl .0 )
0
Thickness of shims
'
mm
0,80 + 1,25
'
V I I - 9 6 - Cancels a n d replaces
Print no.
506.763/02
Marea-Marea Weekend
Technical data
Gearbox and differential
00-21-27
55
Marea-Marea Weekend
Technical data
Gearbox and differential
00.21-27
TD100
TD
DIFFERENTIAL
13,107
1 2,069
7,504
7,098
4,842
4,319
3,450
3,084
n
j
2,572
2,810
2,423
11,259
13,107
to
T
Differential internal casing bearing
by shims
mm 0,05
1,70+2,60
1,25+1,60
Thickness of shims
Bearing rolling
torque
Interference
to
obtain exact bearing pre-loading
0,10+0,14
mm
0,10
0,10+0,20
1,8+2,2
Thickness of shims
56
V I I - 9 6 - C a n c e l s a n d replaces
Print no.
506.763/02
Technical data
Marea-Marea Weekend
00.21-27
ENGINE TYPE
16v
AISIN
A U T O M A T I C TRANSMISSION.
Gears
.1.
o
o
o
ooooo
ooooo
0 0 fill
OOOOO
Gear ratios
ooooo
Idler ratio
Torque
converter
Quantity
of oil
I
GI/2
2,807
1,479
1,000
0,735
2,769
1,019 (54/53)
0 mm
Ratio
(multiplication)
engine torque
total, w i t h gearbox,
converter,
radiator
and pipes empty
replacement
only
216
2,150
DIFFERENTIAL
4 "
it
Crown wheel
and pinion
reduction
Final drive ratio
ooooo
ooooo
ooooo
Ratio at the wheels
OOOOO
ooooo
3,505 (82/23)
3,633 ( 5 4 / 5 3 x 8 2 / 2 3 )
10,197
5,373
3,633
2,670
10,059
57
Technical data
Marea
Braking system
00.33
(*)
H^j
i f f i l 16V
I ^ J 16V
TD 75
fc^l
FRONT B R A K E S
TD 100
Values in mm
257
V\ ir i ~
1
1
UISC
v < ^
j_
pads
[LJ^]^0
<
allowed
n ^ S o ^
19,80 + 20,10
11,10
18,55
10,20
18,20
1,5
allowed
Caliper
0
11,80 + 12,10
Master cylinder
54
22,225 ( 7 / 8 " )
Iso-Vac 8"
pneumatic vacuum servo
acting on all four wheels
Brake servo
D i s
t a n c e
t
?
piston push rod from
t
oc&j*||i
^ T P " " ]
22,45 + 22,65
|_
master cylinder
4
support plate
REAR B R A K E S
203,10+203,40
v E Q 9 )
^
D R U M
V w y
^^^^jj
204,10
\
V ^ >
Shoes
Reduction
r a t l
204,70
S < f ^ allowed
Wheel cylinders
O^Mto
allowed
r
)
1,5
22,00
Pressure
regulators
0,36
Yoad proportioning
valves
58
0,36
Print no.
506.763/02
Technical data
Marea Weekend
Braking system
00.33
16V
lev
12V
TD
FRONT B R A K E S
Values in mm
-4M
257
19,80 + 20,10
Disc
18,55
allowed
Brake
pads
0
s < ^
1,5
allowed
Caliper
0
18,20
Master cylinder
(pump)
54
22,225 ( 7 / 8 " )
Iso-Vac 8"
pneumatic vacuum servo acting
on all four wheels
Servo brake
Distance of hydraulic
piston push rod
from master cylinder
support plate
22,45 + 22,65
REAR B R A K E S
( C P 9 )
^
\ A _ > y
(( \
]o|
mtfllfc
v & '
^
i
v ^ >
Shoes
203,10+203,40
228,30+228,60
>^-i
204,10
229,30
allowed
204,70
230,00
Wheel cylinders
1,5
22,00
59
Technical data
Marea-Marea Weekend
Braking system
00.33
FRONT B R A K E S
Values in mm
-HM
283,800+284,200
21,800+22,100
20,55
. 1
j,
pat
(L_&]=^0
v - < ^ allowed
20,20
s < allowed
1,5
Caliper
[jS^Sfii"|=:: 0
Et:^^^^
Master cylinder
23,81 (15/16")
ISO-VAC 8" + 7"
pneumatic vacuum servo acting
on all four wheels
Servo brake
r taJ
azgSjJL
1 P"]
J <L
54
Distance of hydraulic
piston push rod
from master cylinder
support plate
|_
22,45 + 22,65
240
REAR B R A K E S
-4
10,80 + 11,10
Disc
10,10
<C^
Brake
pads
(LS[]=^0
allowed
1f
60
1,5
< C ^ allowed
Caliper
Ratio (reduction)
9,20
34
acting on rear wheels
0,36
Print no.
506.763
Technical data
Marea-Marea Weekend
Steering
00.41
12V
fi|16V
ENGINE TYPE
Jm
i H | 2Qv
16V
I^Pl TD
Type
rack and pinion power assisted
r
T
- 1 Ratio
|
/
no. of turns
lock to lock
Wm
2,9
2,8
142 1,5 mm
137 1,5 mm
132 1 , 5 mm
10,7
11,1
11,5
rack travel
Turning
circle
31 30'
.
.
Steering
angle
c +
\_-J^^j^
i n n e r
oc
38 30'
Steering col.
with 2 universal joints
V I I - 9 6 - Cancels a n d replaces
61
Technical data
Marea-Marea Weekend
Wheels
00.44
1I
II
BL
Tyre inflation
pressure
ENGINE TYPE
Radial, tubeless
type ture
Presse d steel
average
load
heavy
load
average
load
heavy
load
2,1
bar
2,2
bar
2,3
bar
2,5
bar
2,1
bar
2,2
bar
2,3
bar
2,5
bar
6J x 1 5 " - 43
2,1
bar
2,2
bar
2,3
bar
2,5
bar
6J x 1 5 " - 43
2,1
bar
2,2
bar
2,3
bar
2,5
bar
6J x 1 5 " - 49
2,3
bar
2,5
bar
2,3
bar
2,5
bar
5y J x 1 4 " - 37
6J x 1 5 " - 43
2,1
bar
2,2
bar
2,3
bar
2,5
bar
2,1
bar
2,2
bar
2,3
bar
2,5
bar
2,4
bar
2,5
bar
2,3
bar
2,5
bar
wheel rim
5%J x 1 4 " - 37
light alloy
6 J x 1 5 " - 43
5 / J x 1 4 " - 37
5%J x 1 4 " - 43
2
j ^ S j 16V
1 ^ S | 16V c.a.
1^P| 16 V
TD 75
5 / J x 1 4 " - 43
2
5 / J x 1 4 " - 43
2
6J x 1 5 " - 43
5 / J x 1 4 " - 37
5 / J * 1 4 " - 37
5 / J x 1 4 " - 43
5 % J x 1 4 " - 43
6J x 1 5 " - 43
5 / x 1 5 " - 46
l ^ ^ j TD 100
l^plTD
Rear
Front
5 / x14"-43 ( A )
2
4,2
bar
For the Marea Weekend with a commercial load (1 person + 500 Kg) the inflation pressure for the front tyres is 2.3 bar for
all versions excluding those fitted with the 1998 and 2387 TD engine for which it is 2.5 bar, whilst the inflation pressure
for the rear tyres is 3 bar irrespectively for all versions.
(*) Speed limit: 80 km/h
( ) Special tyres for the Marea version
( ) Special tyres for the Marea Weekend
( A ) For the TAXI version
62
X I - 9 6 Cancels a n d replaces
Print no.
506.763/03
annn
Service News
Copyright by Fiat Auto
2/97
44
Fiat Marea
version: all versions
4450 A 401 AA
05.97
REAR W H E E L T O E IN
correction of toe in value given in the Service Manual
0
OPERATIONS IN T H E N E T W O R K
As a correction to the information given on page 63 of Section 00.44 of the Service Manual, Print
no. 506.761, w e wish to point o u t t h a t the exact value of the rear wheel toe in is as follows
Please be so kind as to make a note, by hand, of the correct figures in the above mentioned publication
1F32B7
Technical data
Marea-Marea Weekend
Wheels
00.44
unladen car ( )
WHEEL GEOMETRY
camber (**)
caster (**)
1 57' 30'
Front
suspension
toe in
-1 + 1 mm
Rear
suspension
camber (**)
0 45' 3 0 '
toe in
(")
2 2 mm
( ) With tyres inflated to the correct pressure and vehicle in running order with 5 litres of fuel
( A ) Angular values which cannot be adjusted, used for the correct alignment of the vehicle
63
Technical data
Marea
Front suspension
00.44
F r o n t s u s p e n s i o n independent, Mac Pherson type w i t h lower transverse track control arms anchored to
an auxiliary cross member. Offset coil springs and hydraulic, telescopic, double acting shock absorbers.
Stabilizer bar connected to the telescopic damper.
IUjjjJjjl| 20V
ENGINE TYPE
Coil springs
Diameter of wire
mm
12,30,05
12,50,05
(12,70,05)*
(12,90,05)**
Number of turns
12,7 0,05
(12,90,05)*
12,9 0,05
3,75
Direction of coil
clockwise
mm
434
437 (436)*
(434)**
mm
182
mm
182
182
182
(
I
Height of spring
under a load of:
mm
436 (434)*
434
>182
| 346,3 daNm
1 (366 daN)*
/ (405 daN)**
321,8 daN
height of mm
>182
1 366 daN
( (405 daN)*
. . .
,
height of mm
>182
,
yellow (1) for
1
a load of:
405 daN
321,8 daN
height of mm
height of mm
>182
<182
346,3 daNm
(366 daN)*
(405 daN)**
height of mm
<182
. . .
.
he.ghtofmm
SS182
405 daN
height of mm
(1) Springs of the same category must be fitted
(*) For vehicles with air conditioning or automatic transmission.
(**) For vehicles with air conditioning and automatic transmission.
<182
V
r
l o a d
|
I
J
)
(
366 daN
(405 daN)*
V.
Shock absorbers
Type
mm
508 2,5
501 2,5
mm
361 2,5
354 2,5
Travel
mm
147
mm
18
Stabilizer bar
Diameter of stabilizer bar
64
Print no.
506.763/07
Technical data
Marea
Front suspension
00.44
Coil springs
Diameter of wire
mm
12,20,05
12,90,05
3,75
Number of turns
clockwise
Direction of coil
Height of spring released
Height of spring
under a load of:
mm
434
436
mm
182
mm
182
I
<
J
J
<
J
405 daN
height of mm
>182
405 daN
height of mm
>182
405 daN
height of mm
^182
405 daN
height of mm
<182
Shock absorbers
low pressure gas
mm
508 2,5
mm
361 2,5
Travel
mm
147
Stabilizer bar
Diameter of stabilizer bar
mm
17
19
65
Technical data
Marea
Rear suspension
00.2127
R e a r s u s p e n s i o n independent w i t h cast iron spheroid track control arms. Coil springs and shock absorbers w i t h vulcanized bushes. Anti-roll torsion bar. Rigid H auxiliary frame made up of a transverse
tubular element and t w o pressed side members connected to it.
ENGINE T Y P E
20V
TD
TD
17
19
Coil spring
Diameter of wire
120,05
mm
Number of turns
Direction of coil
clockwise
Height of spring
under a load of:
mm
308,8
mm
184
>184
Shock absorbers
Type: telescopic, double acting
mm
320 2
mm
223 2
Travel
mm
97
Stabilizer bar
Diameter of stabilizer bar
66
mm
17
19
Technical data
Marea Weekend
Front suspension
00.44
F r o n t s u s p e n s i o n independent, Mac Pherson type w i t h steel track control arms anchored t o an auxiliary cross member. Offset coil springs and double acting telescopic shock absorbers. A n t i - r o l l torsion
bar.
i B l 12V
ENGINE TYPE
h^S)
l^i
16V
$16V
20V
Coil springs
Diameter of wire
mm
12,70,05
(12,90,05)*
12,30,05
12,7 0,05
Number of turns
3,75
Direction of coil
clockwise
Height of spring
under a load of:
mm
434
436 (434)*
436 (434)**
432
mm
182
182
182
182
13,1 0,05
(12,90,05)**
mm
>182
366 daNm
(405 daN)*
height of mm
>182
366 daN
(405 daN)*
height of mm
>182
405 daN
height of mm
321,8 daN
height of mm
<182
366 daNm
(405 daN)*
height of mm
<182
) 366 daN
1 (405 daN)*
height of mm
^182
405 daN
height of mm
^182
, 321,8 daN
(
J
J
(
I
J
>182
mm
508 2,5
501 2,5
mm
361 2,5
354 2,5
Travel
mm
147
Stabilizer bar
Diameter of stabilizer bar
mm
16
17
67
Technical data
Marea Weekend
Front suspension
00.44
TD
I TO
Coil springs
Diameter of wire
mm
12,90,05
Number of turns
13,20,05
3,75
Direction of coil
clockwise
mm
434
436
mm
182
mm
182
j
<
J
405 daN
height of mm
>182
405 daN
height of mm
>182
I
<
J
405 daN
height of mm
^182
405 daN
height of mm
<182
Shock absorbers
Type: telescopic, double acting
mm
508 2,5
mm
361 2,5
Travel
mm
147
Stabilizer bar
Diameter of stabilizer bar
68
mm
17
19
Print no.
506.763
Technical data
Marea Weekend
Rear suspension
00.21-27
Rear suspension independent w i t h track control arms anchored to an auxiliary cross member. Variable
flexibility coil springs and stabilizer bar. Gas shock absorbers w i t h low friction coefficient lower bushes.
j ^ ^ l | ^ ^ ^ J^^l
ENGINE T Y P E
12V
16V
16V
TO
20V
TD
Coil spring
mm
Diameter of wire
12,70,05
Number of turns
Direction of coil
clockwise
Height of spring
under a load of:
mm
307
mm
184
407 daN
height of mm
>184
407 daN
height of mm
<184
Shock absorbers
Type
mm
mm
222 2
223 2
222 2
223 2
Travel
mm
98
97
98
97
mm
17
19
17
19
320 2
Stabilizer bar
Diameter of stabilizer bar
V t l - 9 6 - Cancels a n d replaces
69
Technical data
Marea-Marea Weekend
Electrical equipment
00.55
STARTER
MOTOR
M. Marelli
E80E-12v-1KW
M. Marelli
M. Marelli
M. Marelli (*)
E80E-12v-0,9 kW M 7 0 R - 1 2 v - 1 , 4 KW M70R-12V-1,4kW (with reduction gear)
(with reduction gear)
ALTERNATOR
M. Marelli
A115I-14V-38/65A
M. Marelli
A127IR-14V-50/85A ( )
M. Marelli
A115I-14V-40/75A
M. Marelli
A127IR-14V-50/85A()
VOLTAGE
REGULATOR
BATTERY
IGNITION
SYSTEM
IGNITION
COIL
SPARK P L U G S
M. Marelli
A127IR-14V-50/85A
BUILT IN ELECTRONIC
12V-40Ah-200A
12V-50Ah-250A
12V-50Ah-250A
12V-60Ah-380A(A)
HITACHI MPI
Bosch Monomotronic Weber-Marelli I.A.W.
Bosch Motronic MPI
MPI integrated
integrated electronic integrated electronic
SPI integrated
electronic
injection/ignition
electronic
injection/ignition
injection/ignition
injection/ignition
Bosch
M. Marelli
HITACHI
Bosch
0.221.503.407
BAE 920 A
C M 1 4 - 301
0.221.504.006
70
Print no.
506.763/03
Technical data
Marea-Marea Weekend
Electrical equipment
00.55
| ^ ^ |
M. Marelli
A115I-14V-38/65A
M. Marelli
A127IR-14V-50/85A ( )
VOLTAGE R E G U L A T O R
BATTERY
PRE-HEATING
E L E C T R O N I C C O N T R O L UNIT
INJECTION ADVANCE
E L E C T R O N I C C O N T R O L UNIT
EGR E L E C T R O N I C C O N T R O L UNIT
HEATER P L U G S
TD
M. Marelli
E 95RL - 12V - 2,2 kW
(with reduction gear)
S T A R T E R MOTOR
ALTERNATOR
I TD 100
TD 75
M. Marelli
A115I-14V-40/75A
M. Marelli
A127IR-14V-50/85A ( )
Built in electronic
12V-60Ah-380A
12V-60Ah-380A
12V-70Ah-450A(A)
12V-70Ah-450A
BOSCH
0.281.003.004
BOSCH
0.281.003.010
LUCAS
BOSCH
41000087-101
0.281.001.517
SI PEA 2904
BITRON
151405.01
M. Marelli
MCR 108
BERU 0.100.226.249
X I - 9 6 - Cancels a n d replaces
71
Technical data
Marea-Marea Weekend
00.55
1^1
16V
12V
S T A R T E R MOTOR
M. Marelli
E80 E-12V-1 kW
M. Marelli
E80 E-12V-0.9 kW
Type
Voltage
Nominal power
kW
12
1
0,9
clockwise
No. of poles
4
series winding
Field coil
Engagement
free wheel
Operation
solenoid
mm
0,1 - 0,5
0,1 + 0,45
A
rpm
V
daNm
180
1720
9,5
0,37
200
2200
9,8 - M 0
0,38
A
V
daNm
324
7,1
5*0,97
440
7,6
5*1,25
40
11,4
8500 - 9000
44 - 48
11,4 M 1,5
11400 - 1 2300
0,30 + 0,32
0,32
A
V
rpm
Relay
(
Windinq
n
resistance
pull in D
)
{
1
hold in Q
1,2 -
1,3
1,9
Lubrication
Internal splines and shaft bushes
VS SAE 10 W
TUTELA M R 3
72
bars
Print no.
506.763/03
Marea-Marea Weekend
Technical data
Electrical equipment: starting
00.55
Wiring diagrams for starter motors
73
Technical data
Marea-Marea Weekend
00.55
16V 'Sggfl 20V
0|
ft
TD
TD
S T A R T E R MOTOR
M. Marelli
M70R-12V-1,4 kW
(with reduction gear)
Type
Voltage
M. Marelli
E95RL-12V-2,2 kW
Nominal power
12
kW
2,2
1,4
clockwise
No. of poles
Field coil
series - parallel
series
Engagement
free wheel
Operation
solenoid
mm
0,1 + 0,5
0,15 - 0,45
A
rpm
V
daNm
360 - 380
1150
8,15
1,30
600
1400
7,9
1,6
A
V
daNm
680 + 700
4,9
3,11
1110 - 1150
4,4 + 4,6
5*3,9
60 - 80
4,9
4040
120 - 140
11
4500 + 4750
pull in Q
0,33 + 0,37
0,23 - 0,27
hold in Q
1,13
0,93 -
A
V
rpm
Relay
r
Winding
^ ^
resistance
)
j
V
Lubrication
Internal splines and shaft bushes
-H
1,27
V S SAE 10 W
TUTELA M R 3
74
1,07
bars
Print no.
506.763
Technical data
Marea-Marea Weekend
00.55
S T A R T E R MOTOR W I R I N G DIAGRAMS AND T Y P I C A L C U R V E S
KWNm V
5600
2,1
da Nm
1(W
4000
C v
1/m n \
3200
2400
1600
BOO
u0
KWNm
3( 0
41 0
5( 0
6( 0
71 0
80
Starter
motor
wiring
diagram
M70R - 12V - 1 , 4 kW (with epicyclic
reduction gear)
2 ]0
Marelli
75
Technical data
Marea-Marea Weekend
00.55
l^pl 12V
X2V
I^Pl TD
l ^ | 16V
l ^ i TD
1^116V
16V ( ) | ^ | TD
()
1^116V ( )
ALTERNATOR
M.Marelli
A115I-14V-38/65A
Type
Nominal voltage
M.Marelli
A115I-14V-40/75A
M.Marelli
A127IR-14V-50/85A
14
Maximum current
65
75
85
Nominal current
at 1800 rpm
rpm
38
40
50
Nominal current at
6000 rpm
65
75
85
2,47 + 2,73
2,66 - 2,94
Direction of rotation
(seen from control side)
clockwise
Diode rectifiers
bridge
Built in electronic
VOLTAGE REGULATOR
Type
RTM 151 B
RTM 151 A
stabilization
rpm
7000
Test current
14,3 - 14,6
76
Print no.
506.763
Marea-Marea Weekend
Technical data
Electrical equipment: recharging
00.55
Wiring diagram for alternators
40 - 2 0
77
Technical data
Marea-Marea Weekend
OO.io
CONTROL MODULE FOR INTEGRATED
TRONIC INJECTION/IGNITION
ELEC12V
Bosch 0.261.203.868
Type
Firing order
(*) From chassis n 13101
Bosch
Type
0.221.503.407
0,45 - 0,55
12000 + 14600
Q
mm
486 - 594
0,8 - 1,5
ADVANCE ON ENGINE
7 X
SPARK PLUGS
NGK BKR6EKC
GOLDEN LODGE 2HLDR
C H A M P I O N RC8BYC ( )
M 14x1,25
Thread
Electrode gap
()
78
mm
0,8
I X - 9 7 - Cancels a n d replaces
Print no.
506.763/07
Marea-Marea Weekend
Technical data
00.55
16V
INTEGRATED ELECTRONIC
INJECTION/IGNITION SYSTEM
Type
Firing order
1-3-4-2
I N J E C T I O N / I G N I T I O N CONTROL UNIT
Make and type
( ) From chassis n 1 9 2 9 5
I.A.W. - 1AF.15
I.A.W. - 1AF - 1G
()
I.A.W. - 1AF.25 ( )
I.A.W. - 1AF - 2G
()
M. Marelli
Type
BAE 920 A
0,580
9100
SPARK PLUGS
NGK BKR6EKC
GOLDEN LODGE 2HLDR
C H A M P I O N RC8BYC ( A )
Thread
M 14 x 1,25
Electrode gap
mm
0,8
T D C AND RPM S E N S O R
Make
JAEGER
Type
CVM 01
mm
575 - 750
0,5-1,5
ADVANCE ON E N G I N E
With engine idling 850 50 rpm
I X - 9 7 - Cancels a n d replaces
79
Technical data
Marea-Marea Weekend
00.55
INTEGRATED ELECTRONIC INJECTION/IGNITION
SYSTEM
1^9)161/
Make
HITACHI M F I - 0 0 9
Firing order
1 - 3 - 4 - 2
HITACHI
Type
CM14-301
0,495 - 0,605
HITACHI GE 108835
513 - 627
0,4 -
1,2
DETONATION SENSOR
Make and type
NGK KNE-03
C Y L I N D E R RECOGNITION AND T I M I N G S E N S O R
Make and type
Bosch B 232.070.023
ADVANCE ON ENGINE
With engine idling ( 8 5 0 5 0 rpm)
9 1
SPARK P L U G S
NGK BKR6EKC
Golden Lodge 2HLDR
Champion RC8BYC ( )
Thread
M 14x1,25
Electrode gap
()
80
mm
0,8
- Cancels a n d replaces
Print no.
506.763/07
Technical data
00.55
20V
Bosch 0.261.204.381
Firing order
1 - 2 - 4 - 5 - 3
Bosch
Type
0.221.504.006
0,4
8500
T D C AND RPM S E N S O R
Make and type
Bosch 0.281.002.102
sensor
0.
774 + 946
0,8 + 1,5
and
m
DETONATION S E N S O R
Make
Bosch
Type
0.261.231.095
SPARK PLUGS
FIAT 7GBMSR
CHAMPION R C 7 B M C
Thread
Electrode gap
M 14x1,25
mm
0,8
81
Technical data
Marea-Marea Weekend
Special tools
00.A
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
I^Sj
1^1
12V
1840206000
1850132000
Spanner ( 1 3 mm), with 1 / 2 " socket for removing inlet manifold fixings
1842128000
1850184000
1852128000
1852138000
1852154000
1852157000
1852159000
1852160000
1852162000
1860183000
1860224000
1860251000
1860303000
82
16V
20V
TD
TD
1852161000
1860054000
16V
Print no.
506.763
Marea-Marea Weekend
Technical data
Special tools
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
|^pp
l3|
12V
1860313000
16V
20V
TD
TD
1860395000
1860443000
1860443000
1860454000
1860460000
1860470000
1860490000
1860644000
1860644000
1860700000
1860724000
1860749000
16V
1860757000
1860758000
1860765000
1860771000
Flywheel lock
83
Technical data
Marea-Marea Weekend
Special tools
00.A
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
S i
12V
1860790000
1860804000
1860810000
Dummy heater plug for ante-chamber (to be used when fitting ante-chamber fixing bush)
1860812000
1860813000
1860814000
1860815000
1860816000
1860817000
1860818000
1860821000
1860822000
1860824000
1860831000
1860833000
1860834000
1860835000
84
16V
{Bu
16V
20V
iSpi
TD
TD
Print no.
506.763
Marea-Marea Weekend
Technical data
Special tools
00.A
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
|^|
12V
1860836000
1860844000
1860845000
1860848000
1860856000
1860859000
1860859001
1860859002
1860860000
1860874000
1860875000
1860876000
1860877000
1860879000
1860880000
16V
20V
TD
TD
1860846000
1860878000
16V
|^^|
Tool for fitting gasket for crankshaft rear cover (to be used
with 1860879000)
85
Technical data
Marea-Marea Weekend
Special tools
00.A
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
12V
1860882000
Tool for fitting gasket for camshaft cover and auxiliary shaft
cover
1860883000
1860884000
1860886000
1860887000
1860888000
1860892000
1860893000
1860895000
1860896000
1860898000
1860899000
1860901000
1860905000
1860942000
1860964000
16V
20V
TD
TD
1860885000
86
16V
Print no.
506.763
Marea-Marea Weekend
Technical data
Special tools
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
12V
1860966000
1860967000
1860968000
1860969000
1861001039
1861001041
1861001042
1865090000
1867019000
Drift for removing and refitting oil pump drive gear bush
1867029000
1867030000
1870404000
Support for dial gauge for measuring cylinder liner/bore recesses and projections
1890385000
1895762000
1895868000
1895882000
16V
20V
TD
TD
1860965000
measurements
16V
(use a magnetic
base
87
Technical data
Marea-Marea Weekend
Special tools
00.A
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
12V
1895890000
16V
16V
20V
TD
TD
CLUTCH
1870081000
1870447000
1875084000
1875086000
GEARBOX - DIFFERENTIAL
1842133000
1842134000
1845028000
1845057000
1845062000
1847017001
1847017004
Plate for removing flanged shaft from planet gear (to be used
with 1847017001)
1847056000
1850132000
1850113000
88
Print no.
506.763
Marea-Marea Weekend
Technical data
Special tools
oou
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
Inp
12V
1855035000
1860691000
1860851000
1860851001
1860870000
1860873000
1860889000
1870007000
Universal handle
1870152000
20V
TD
TD
1870419000
Tool for fitting gasket for main shaft on bell housing (to be
used with 1870007000)
1870448000
1870469000
1870478000
Tool for fitting 4th speed gear bush and rear bearing
1870629000
Drift for fitting differential casing cover seal (to be used with
1870007000)
1870630000
1870631000
Drift for fitting main and lay shaft bearings and gears
1870632000
bearing
(*)
16V
Drift for fitting hubs and gears on main and lay shafts
differential
16V
(to be used
with
89
Technical data
Marea-Marea Weekend
Special tools
00.A
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
12V
1870633000
1871001014
1874140005
Pair of tools for staking gearbox shaft nuts (to be used with
1874140001)
1874541000
1875016000
1875017000
1875088000
1881124000
Pliers for adjusting main and lay shaft rear bearing circlips
1895411000
1895424000
1895655000
Tool for determining thickness of differential bearing adjustment shim (to be used with 1895884000)
16V
16V
20V
TD
TD
BRAKING S Y S T E M
1856132000
1856133000
1872273000
1895899000
1895873000
(**)
90
Print no.
506.763
Marea-Marea Weekend
Technical data
Special tools
00.A
ENGINE TYPE
Tool
DESCRIPTION OF TOOL
number
12V
1881136000
ifPl
lev
16V
20V
TO
TD
STEERING
1847038000
1860888000
SUSPENSION
1845028000
Tool for removing front hub bearing inner race from flange(to
be used with 1840005003 and 1840005302)
1847014000
1874555000
Pneumatic tool for compressing suspension springs when removing shock absorber
1875055000
Drift for fitting front wheel hub bearings (to be used with
1870007000)
1875059000
A U X I L I A R Y UNITS
1860494000
Tool for removing air conditioning compressor electro-magnet coupling and pulley
1895655000
ELECTRICAL EQUIPMENT
1850167000
1860893000
1860897000
91
Technical data
Marea-Marea Weekend
Special tools
00.A
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
01 101 01
12V
1876044000
16V
16V
I0i
20V
TD
TD
BODYWORK
1860890000
1878034000
1878077000
1878080000
Tool for positioning door check strap whilst fitting flexible retaining pin (to be used with 1878081000)
1878081000
ORDINARY TOOLS
1840005000
Universal extrator
1840005003
1840005302
1840206000
1846017000
1847017001
1861000000
Rotating stand for overhauling engine (also used for gearboxes and differentials)
1861000001
1870007000
Universal handle
92
Print no.
506.763
Marea-Marea Weekend
Technical data
Special tools
00.A
ENGINE TYPE
Tool
number
DESCRIPTION OF TOOL
Jam,
12V
01 01 01
16V
1870404000
1871000000
1874140001
1876048000
1881138000
1882002010
1882003000
1882011000
1895113000
1895881000
1895882000
1895884000
16V
TD
TD
20V
93
Technical data
Marea-Marea Weekend
Tightening torques
oo.
ENGINE TYPE
Tightening
torques
DESCRIPTION
Thread size
daNm
01 0
12V
ENGINE
Main bearing caps fixing, flanged bolt
(Dust) shield fixing, bolt
M10
M12
2+100
M6
0,9
M14
2,5
M18
M22
M6
0,9
M8
2,5
M6
0,7
0,9
M6
M8
0,9
2,5
M10x1,25
M10*1,25
M10
M12
M10
4+
90+90
94
0
20V
0i
TD
M8
2,5
M7
1,5
M6
0,9
2,5
3
2,5
M6
0,9
M8
2+40
M8
2+60
6,5+
ro
6,5+
90+90+90
101
90+90+90
3
Flywheel to crankshaft fixing, bolt
16V
4+
M8
90+90+90
M10
M10x1,25
M8
16V
Print no.
506.763
Marea-Marea Weekend
Technical data
Tightening torques
oo.
ENGINE TYPE
Tightening
torques
DESCRIPTION
Thread size
daNm
M10
8,3
M12x1,25
16
M16
left
36
M8
2,5
M12
12
M6
0,9
M6
0,9
M6
0,9
M8
2,5
M6
0,9
M6
,9
M6
0,9
M8
2,5
M6
0,9
M8
2,5
M6
M8
M10
0,9
2,5
5
M8
2,5
M10x1,25
M8
M10*1,25
M10x1,25
2,5
12V
16V
3,2
01 01 01
16V
101
20V
TD
TD
95
Technical data
Marea-Marea Weekend
Tightening torques
oo.
ENGINE TYPE
Tightening
torques
DESCRIPTION
Thread size
daNm
M10
M12
M10x1,25
M10x1,25
M8
M8
M10
2,5
3,2
5
Auxiliary shaft automatic belt tensioner and alternator mounting to crankcase fixing, bolt
M8
2,5
M8
2,5
M10
M8
2,5
M6
2,5
M10x1,25
M6
0,9
M6
0,9
M8
2,5
M16x1,5
tapered
2,5
M14x1,5
M12x1,5
Spark plug
96
3
2,2
3,2
2
2,4
M5
0,4
M6
0,9
M14x1,25
2,7
M14x1,5
2,2
M8
2,5
M10x1,25
M6
0,9
I0i
I0i 0 1 0 1 0 1 0
12V
16V
16V
20V
TD
TD
Print no.
506.763
Marea-Marea Weekend
Technical data
Tightening torques
oo.
ENGINE TYPE
Tightening
torques
DESCRIPTION
Thread size
daNm
M6
1,1
M8
2,5
M10><1,25
Bearing to tensioner bracket fixing, nut (for versions with air conditioning)
M10
Camshaft housing
head fixing, bolt
M8
1,5
M7
1,5
M9x1
5,1
M20
19
M7
1,5
M6
0,9
M12xl,25
8,7
M10x1,25
(inlet/exhaust) to cylinder
M12xl,25
Alternator to mounting and bracket fixing, bolt
M1 Ox 1,25
8,5
9
5
7
M10
M1 Ox 1,25
M10x1,25
M8
2,5
01 01 >0 0 i
12V
iev
16V
20V
TD
TD
97
Technical data
Marea-Marea Weekend
Tightening torques
oo.
ENGINE TYPE
Tightening
torques
DESCRIPTION
Thread size
daNm
01
12V
16V
0
16V
2,5
M10* 1,25
M16x1,5
2,5
M10x1,25
M5
0,5
M6
0,9
M8
2,5
M8
2,5
M10
M6
0,9
M5
0,5
M6
0,9
M7
1,5
M10x1,25
M20
M6
0,9
M8
2,5
M8
2,5
M6
0,9
M8
M8 (*)
M10
3,2
2,5 (*)
7
M8
2,5
M8
M10
M10
2,5
7
5
20V
TD
TD
M8
101
|0
98
Print no.
506.763
Marea-Marea Weekend
Technical data
Tightening torques
oo.
ENGINE TYPE
Tightening
torques
DESCRIPTION
Thread size
IIHSElt
daNm
M12X1,25
M8
2,5
M10
M8
2,5
M10x1,25
M8
2,5
M10
M6
0,9
M8
2,5
M8
2,5
M8
2,5
M10
M6
0,9
M6
0,9
M20
M10x1,25
M8x1,25
2,5
M6
0,9
M10
TP*
12V
16V
16V
IP*' TP*
20V
TD
TD
99
Technical data
Marea-Marea Weekend
Tightening torques
oo.
ENGINE TYPE
Tightening
torques
DESCRIPTION
Thread size
daNm
M10x1,25
M8
2,5
M8
2,5
M16
10
M6
0,9
M8
2,5
M10
M35
12
M8
2,5
M8
2,5
M8
2,5
M14
Complete injector
M24
5,5
M8
2,5
M8
2,5
M8
2,5
M10
M12
100
M20
1,5
101 10 0 i
12V
16V
16V
|^^(
20V
0
TO
10)
TD
Print no.
506.763
Marea-Marea Weekend
Technical data
Tightening torques
oo.
ENGINE TYPE
Tightening
torques
DESCRIPTION
Thread size
daNm
M6
0,9
M6
0,9
M7
1,5
M10X1,25
M8
2,5
M8
2,5
M8
2,5
M6
0,9
M12
Heater plug
M12
1,5
M8
2,5
01 01
12V
16V
16V
20V
|^^^
TO
TO
101
Technical data
Marea-Marea Weekend
Tightening torques
oo.
DESCRIPTION
Thread size
Tightening
torques
daNm
ENGINE E X H A U S T
Bracket connecting half brackets support front pipe to bracket
anchored to differential support fixing, bolt
M8
2,5
M8
2,5
M8
2,5
M8
3,2
Front pipe supporting half bracket fixing, nut with metal insert
M8
2,5
M8
2,5
M10x1,25
4,2
M8
2,8
M8
2,8
M10
M12xi,25
8,5
M8
3,5
M10x1,25
4,5
M12xi,25
M8
3,8
102
Print no.
506.673
Marea-Marea Weekend
Technical data
Tightening torques
oo.
DESCRIPTION
Thread size
Tightening
torques
daNm
M8
2,8
M10x1,25
4,5
M12*1,25
M10x1,25
M12x1,25
M10x1,25
M12x1,25
Support to engine sump, differential side, fixing, bolt (1747 1998 engines)
M12x1,25
M12x1,25
M8
M10x1,25
M10x1,25
M10x1,25
M8
2,8
M6
0,44
M8
1,5
M8
2,6
103
Technical data
Marea-Marea Weekend
Tightening torques
oo.
DESCRIPTION
Thread size
Tightening
torque
daNm
M6
0,44
M8
3,2
M6
0,74
M8
2,8
M8
1,7
M8
1,7
M8
1,7
M8
1,7
M8
1,7
M8
2,7
M6
0,74
M8
3,5
M14x1,5
M8
2,5
M8
2,5
G E A R B O X AND D I F F E R E N T I A L
Speed control rod position spring fixing, nut
104
Print no.
506.673
Marea-Marea Weekend
Technical data
Tightening torques
oo.
DESCRIPTION
Thread size
Tightening
torques
daNm
M6
M8
2,5
M8
3,4
M20x1,5
11,8
M6
1,8
M8
2,5
M6
M6
M10x1,25
8,8
M10x1,25
M8
4,9
2,5
M6
1,2
M22x1,5
4,6
M22x1,5
4,6
M6
M18x1,5
M8
1,5
M14x1,25
5th speed gear main and lay shaft fixing, ring nut
105
Technical data
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Tightening torques
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DESCRIPTION
Thread size
Tightening
torques
daNm
BRAKING SYSTEM
Brake back plate to suspension arm fixing, bolt with unlosable
flexible washer
M8
2,4
M10x1,25
5,7
Front brake caliper to steering knuckle fixing, bolt with unlosable tapered wahser (1998 20V only)
M12x1,25
10,5
Front brake disc, rear brake disc, rear brake drum fixing, bolt
(with wheel centering function)
M8
1,2
Complete bracket for braking system fixing, bolt with unlosable tapered washer
M8
2,5
M10
1,4
M8
0,6
M7
0,6
M10
1,4
Cylinder to rear brake back plate fixing, bolt (all versions with
rear drum brakes)
M6
0,8
M8
0,65
M10
1,4
Male connector for pipes with inflated ends for fixing rigid
pipe
M10
1,4
M6
M6
0,6
M8
M10x1,25
5,7
Rear brake caliper to plate fixing, bolt (versions with rear disc
brakes only)
106
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Technical data
Tightening torques
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DESCRIPTION
Thread size
Tightening
torques
daNm
HANDBRAKE
Bolt fo supporting handbrake and gear lever to bodyshell
M8
2,8
M8
1,5
M8
2,8
M6
0,85
M8
M8
2,5
M8
1,8
M6
0,5
M8
15
M12x1.25
M10x1,25
M14x1,5
M10x1,25
M12
3,6
M8
M16x1,5
M8
2,2
M6
0,74
POWER A S S I S T E D S T E E R I N G AND S T E E R I N G
Power assisted steering bracket fixing, nuts and bolts
107
Technical data
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Tightening torques
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DESCRIPTION
Thread size
Tightening
torques
daNm
M8
2,2
Reinforcement
M8
2,2
M10x1,25
M12x1,25
12
M12x1,25
12
Track control arm to cross member front and rear U bolts outer
fixing, bolt with flat tapered washer
M10x1,25
7,5
Track control arm to cross member front and rear U bolts inner
fixing, bolt with flat tapered washer
M10x1,25
7,5
M12x1,25
10
M8
3,2
M10x1,25
M12x1,25
10
M10x1,25
M8
M1 Ox 1,25
M22x1,5
7 + 55
M24x1,5
7+62
M12x1,25
8,6
M12x1,25
12
M12x1,25
12
strut
to
pedals
assembly
fixing,
nut
FRONT S U S P E N S I O N
Front cross member to bodyshell rear fixing, bolt for nut
Wheel bolts/nuts
REAR S U S P E N S I O N
108
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Tightening torques
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DESCRIPTION
Thread size
Tightening
torques
daNm
Rear suspension track control arm to frame fixing, nut for bolt
M16*1,5
15
M12*1,25
8,8
M10><1,25
M22*1,5
28
M10><1,25
5,6
M8
M12*1,25
8,6
M6
0,55
M6
0,55
M10
0,8
M8
2,4
M10x1,25
4,5
7/16
M8
M6
1,5
AIR CONDITIONING
ELECTRICAL EQUIPMENT
Earth to bodyshell fixing, bolt
BODYWORK
Door side fixed hinges fixing, bolt
Belt adjuster to upper section of centre pillar fixing, bolt
109
Technical data
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Tightening torques
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DESCRIPTION
Thread size
Tightening
torques
daNm
7/16"
M6
0,8
M6
0,74
M6
0,7
M8
2,4
M6
0,65
M8
AIR BAG S Y S T E M
ABS
110
Marea-Marea Weekend
Introduction
Planned maintenance
oo.
page
The Planned Maintenance Programme whose operations are described later on is the one in
force at the time of printing and replaces and cancels the one in volume 1 of the Manual
Introduction
Marea-Marea Weekend
Planned maintenance
oo.
PLANNED MAINTENANCE P R O G R A M M E
THOUSANDS OF KM
OPERATION
PAGE
20
40
60
2
3
6
7
8
no
EQ
KB
KB
EQ
KB
KB
15
KB
Check/top up fluid levels (engine cooling, braking system, power steering, windscreen washer, battery, etc.)
17
KB
KB
m
m
EJ
47
5J
48
El
m
E3
8
10
13
13
14
15
21
44
46
47
48
50
51
Introduction
Marea-Marea Weekend
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Foreword
The maintenance operations consist of checking and restoring the efficiency of certain vehicle c o m p o nents subject to wear which may deteriorate during normal usage conditions.
This section describes the operations which should be carried out on the vehicle at the intervals set out
in the Planned Maintenance Programme (on the previous page). Each operation is described indpendently, on account of which there is no pre-defined ideal operating cycle to be repeated at each interval.
It is therefore necessary to ensure that those operations w h i c h require the same components to be dismantled are carried out at the same intervals in order to maximum the efficiency of the repair times.
If, when carrying out each operation, the need arises to carry out additional replacements or further repairs not envisaged in the Planned Maintenance Programme, prior approval must be obtained first from
the Customer.
PLANNED MAINTENANCE O P E R A T I O N S
C H E C K CONDITION O F T Y R E S AND
WEAR
P4F01BA01
Copyright
by Fiat Auto
Introduction
Marea-Marea Weekend
Planned maintenance
00.
C H E C K OPERATION OF FRONT D I S C
B R A K E PAD W E A R S E N S O R
E l C H E C K CONDITION OF REAR
B R A K E PADS
(Marea 1998 20v - 2387 TD)
DISC
n
"
C H E C K CONDITION AND W E A R O F
REAR DRUM B R A K E S
Introduction
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C H E C K T E N S I O N AND, I F N E C E S S A R Y , A D J U S T V A R I O U S D R I V E B E L T S
The tension of the various drive belts is checked using tool 1895762000. Engines fitted w i t h automatic
tensionsers are exempt from this check.
Marea 1581 16v
Check that the tension values for the alternator drive belt and the power steering drive belt measured using the special tool correspond to the recommended figures, given in the table at the foot of this paragraph. If the tension values are not correct, loosen the bolt (1) and rotate the tensioner further via the
special hexagonal opening, then tighten the bolt once again and check the tension of the alternator
drive belt. To adjust the power steering pump drive belt, regulate the adjustment screw and the lock nut
(2).
P4F03BA02
Copyright
by Fiat
Auto
P4F03BA03
Introduction
Marea-Marea Weekend
Planned maintenance
oo.
Introduction
Marea-Marea Weekend
Planned maintenance
BELT SECTION
AV 10
AV 11
TYPE A
Not pre-run in
20 - 29
TYPES B and C
Not pre-run in
25 - 35
TYPES B and C
Not pre-run in
25 + 35
TYPE A
Not pre-run in
30 - 40
TYPES B and C
Not pre-run in
32 - 43
AV 13
POLY-V
3 ribs
23 + 30
4 ribs
30 + 41
5 ribs
38 - 53
6 ribs
45 + 62
7 ribs
54 + 74
POLY-V
TENSION daN
TYPE A
30 + 40
TYPE B and C
40 - 55
TYPE B and C
40 - 55
TYPE A
45 - 55
TYPE B and C
50 + 65
3 ribs
36 + 45
4 ribs
48 - 60
5 ribs
60 - 75
6 ribs
72 - 90
7 ribs
84 - 105
Copyright
by Fiat Auto
Introduction
Marea-Marea Weekend
Planned maintenance
oo.
Q
- Disconnect the negative battery lead, remove the right front wheel, then remove the wheel arch liner
to gain access to the auxiliary shaft drive belts.
- Insert an adjustment spanner in the nut or bolt fixing the damper flywheel (1), rotate the crankshaft
and check the condition of the auxiliary shaft drive belts along the entire perimeter.
of the belts, checking in particular that there are no: cracks, cuts, surface
(which would appear smooth and shiny), dry or hard sections with a consebelts have not come into contact with oil or solvents which could adversely
of the rubber or the adhesion properties.
faults is found, inform the Customer of the need to replace the belts.
Introduction
Marea-Marea Weekend
Planned maintenance
00.
PEDAL
This check should only be carried out on vehicles w i t h mechanical release devices (1370
12v - 1581 16v - 1747 16v - 1 910 T D ) . The
1998 20v and 2387 TD versions have a hydraulic release device fitted.
1. Measure the clutch pedal travel:
1. Pedal in end of travel position
2. Pedal in rest position
X. Pedal travel:
155 10 mm (1370 12y)
170 10 mm (1581 16v - 1747 16v 1910 TD)
2. In order to adjust the clutch pedal in the
rest position it is necessary:
- to let the clutch operating mechanism
bed in fully depressing the pedal 2 or 3
times;
- to check that the travel "X" corresponds
to the recommended figure. The travel
is measured using a rule corresponding
to the pedal centre line and is equivalent
to the distance between the pedal in the
end of travel position (pedal in contact
with the bodyshell) and the pedal in the
rest position;
- any adjustments to the travel are carried
out via the nut and lock nut for the
clutch cable, gearbox side.
NOTE
Copyright
by Fiat Auto
Introduction
Marea-Marea Weekend
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00.
Ft
C H E C K / A D J U S T HANDBRAKE L E V E R
TRAVEL
When the adjustment has been carried out, the control lever
travel
should not exceed 5 notches of the
toothed sector.
With the handbrake lever in the rest
position the rear wheels should rotate
freely; if this is not the case, repeat
the adjustment.
CHECK/ADJUST
ANCE
TAPPET
CLEAR-
Marea 1910 T D
1. Remove the upper engine protection.
Introduction
Marea-Marea Weekend
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P4F09BA02
Marea 2387 TD
3. Disconnect the pipe (1) connected to the
EG R valve, release the engine cooling system pipes from the retaining bands on the
tappet cover. Loosen the bolt (2) fixing
the timing belt cover, then undo the bolts
fixing the tappet cover and remove it.
1910 TD
2387 T D
0.35 0.05 mm
P4F09BA04
Copyright
by Fiat Auto
Introduction
Marea-Marea Weekend
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00.
ED
Rep/ace the shim removed with another one of the appropriate size to
restore the correct valve clearance.
Carry out the same operation for the
other shim for the pair of valves being adjusted.
The electronic injection/ignition systems used are capable of automatically controlling the advance, the
carbon monoxide (CO) content and the idle air f l o w rate, therefore no manual adjustment operations are
required. However, a check on the content of the exhaust gases downstream of the catalyzer can provide useful indications on the injection/ignition system operating conditions and the engine and catalyzer parameters.
The concentration of carbon monoxide (CO), unburnt hydrocarbons (HC) and the value K is measured
with the catalyzer at operating temperature (300 - 350 C) (we recommend driving hard along a section of
road for around 5 to 10 minutes to ensure that the catalyzer reaches operating temperature), then insert a
suitably calibrated tester sensor at least 30 cm into the end of the exhaust pipe as shown in the diagram
overleaf.
If the shape of the end section of the exhaust pipe is such that the sensor cannot be fully introduced, add a
special extension pipe ensuring the seal in the join area.
1. Check that the concentration of CO and the value A, during idling and accelerated idle, correspond to
the figures recommended in the government circular:
Engine measurement during idling: CO limit <0.5% vol.
Measurement for accelerated idle (2000 - 2500 rpm): C O limit <0.3% vol.
Lambda = 1 0.03
10
Introduction
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If the values are not within the limits set out in the government circular, the Customer must be notified of
the need t o check:
- that the Lambda sensor is working properly using the Fiat/Lancia tester;
- for the presence of air penetration in the area surrounding the Lambda sensor housing;
- the injection system, particularly the wear of the spark plugs.
2. If the HC figure is more than 90 p.p.m., the cause of the problem should be sought in the engine t i m ing or the decreased efficiency of the catalyzer.
VOLTAGE
X 1,030
0,970
mv
1000 800 600
RICH
MIXTURES
LEAN
MIXTURES
400 H
200
0
1,2
1,3
AIR COEFFICIENT X
P4F11BA01
P4F11BA02
Copyright
by Fiat Auto
11
Introduction
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00.
12
Introduction
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KB C H E C K A N T I - E V A P O R A T I O N S Y S T E M
The anti-evaporation system prevents the petrol vapours, which form in the tank and the fuel system,
from being discharged into the atmosphere and and consequently releasing the light hydrocarbons
(HC) which they contain, producing a pollutant effect.
It is therefore necessary to check that the anti-evaporation system pipes are correctly positioned in the
engine compartment; also check their condition, making sure that there are no signs of cracks, cuts or
leaks and that they are correctly fixed and not interfering with other components. Check the condition
of the active charcoal filter. Position the vehicle on a lift and check the condition of the pipes under the
floor of the vehicle.
KB R E P L A C E F U E L F I L T E R (petrol engines)
Proceed w i t h removing the fuel filter by carrying out the following operations:
- Raise the vehicle;
- undo the bolts shown in the diagram and
remove the protective shield.
- disconnect the rapid fuel inlet and outlet
connectors from the filter acting on the retaining bands and collecting the fuel w h i c h
comes out during this operation in a suitable container.
- undo the fixing bolt and remove the filter.
NOTE
P4F13BA02
13
Introduction
Marea-Marea Weekend
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| Q R E P L A C E F U E L F I L T E R (diesel engines)
To replace the fuel filter, after having disconnected the negative battery lead, proceed as
follows:
- Disconnect the connector (1) for the fuel
supply pipe from the tank from the filter;
- Disconnect the connector (2) for the fuel
supply pipe tothe injection pump from the
filter;
- Disconnect the electrical connection (3)
from the fuel pre-heating device sensor;
- Disconnect the electrical connection (4)
supplying the fuel pre-heating device;
- Undo the nuts fixing the partition between
the passenger and engine compartments
and remove the complete fuel filter.
- At the bench, undo the fuel cartridge (1)
w i t h the seal from the support ( 2 ) .
14
orthe
(to
1.6
Introduction
Marea-Marea Weekend
Planned maintenance
00.
IQED
R E P L A C E AIR F I L T E R C A R T R I D G E
Undo the bolts fixing the air filter cover. Lift
up the cover and extract the filter element; to
facilitate this last operation, releasethe retaining band for the connecting hose to the butterfly casing.
Any cleaning operation could damage the filter and risk adversely affecting the operation of the engine
fuel system.
Clean the air filter cartridge container carefully, replace the filter, then refit the cover and
fix it using the appropriate bolts.
NOTE
NOTE
15
Introduction
Marea-Marea Weekend
Planned maintenance
00.
Marea 2387 TD
The Marea 2387 TD is equipped w i t h a device warning that the air filter is blocked. In
certain usage conditions (driving behind
other vehicles in heavy rain/snow) the filter
may become temporarily obstructed; if this is
the case, the warning light in the dashboard
will come on.
To gain access to the air filter the electrical
connector for the blockage warning device
must be disconnected from the air filter c o n tainer cover, shown in the inset, the fixing
bolts undone, the hose connected to it released and the actual cover removed.
If the warning light comes on at a slightly
lower mileage than recommended for replacing the filter, then remove the filter and replace it; if this is not the case, then check the
condition of the filter and, if necessary, notify
the Customer of the need to replace the actual filter prematurely.
Thoroughly clean the air filter cartridge c o n tainer, replace the filter, refit the cover and
connect the hose and connector disconnected during the dismantling.
P4F16BA02
16
Introduction
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00.
KB T O P UP F L U I D L E V E L S
Engine coolant
P4F17BA01
P4F17BA02
P4F17BA03
Introduction
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00.
If fluid has to be added, use only D 0 T 4 classification. Tutela TOP 4 270C, which is used
initially, is particularly recommended.
P4F18BA02
With the engine running and the vehicle stationary, turn the steering wheel completely to the right and
to the left several times.
Top up until the level corresponds to the M A X reference, then retighten the cap.
WW
b a J
18
Avoid power
flammable.
steering fluid coming into contact with the hot parts of the engine as it is in-
Introduction
Marea-Marea Weekend
Planned maintenance
00.
Windscreen/rearscreen
washer fluid level
and
headlamps
The level of the oil should never exceed the MAX reference because this
could cause excessive evaporation of
the actual oil and a loss in pressure.
When topping up with oil take great
care to avoid accidentally spilling engine oil in the alternator
ventilation
slits which could cause serious damage to the alternator and also represents a fire hazard.
Do not add oil with different characteristics from the oil already in the engine. Only the use of
semi-synthetic
oil guarantees the maintenance
plan
intervals.
P4F19BA04
Introduction
Marea-Marea Weekend
Planned maintenance
00.
P4F20BA02
Marea 1910 T D
P4F20BA03
Marea 2387 TD
20
Introduction
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oo.
ffj R E P L A C E T I M I N G D R I V E B E L T
Marea 1370 12v
Position the vehicle on a lift, then:
- disconnect the negative battery lead;
- remove the right front wheel;
- remove the right wheel arch liner to gain
access to the auxiliary shaft drive belt.
21
Introduction
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00.
Loosen the automatic tensioner bolt, releasing the belt pressure, then remove it.
22
Introduction
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NOTE
23
Introduction
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00.
2. Remove tool 1860901000 positioned previously on the timing gear, rotating the
crankshaft through t w o revolutions in its
direction of rotation. Loosen the nut fixing the tensioner, ensure that the moving
reference (1) coincides with the fixed reference (2), then lock the tensioner fixing
nut and tighten it to the recommended
torque.
24
Introduction
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oo.
P4F25BA02
25
Introduction
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00.
26
Tools 1860874000
for timing the
shafts only differ from one another
throught the reference housing (3) in
the angle at the bottom which should
correspond with the plug (4) in the
camshaft housing.
Marea-Marea Weekend
Introduction
Planned maintenance
oo.
27
Introduction
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00.
1. Rotate the crankshaft in the opposite d i rection to its normal direction of rotation
through around 20 in relation to the fixed
reference. Rotate the crankshaft again in
its normal direction of rotation until the
same axial movement measured previously (0.6 mm) appears on the dial gauge.
2. Read the angular value on the graduated
disc corresponding to the previous axial
movement (for example 8). Calculate the
arithmetical average of the angular value
of the crankshaft set at the beginning of
the procedure (10) and the current value
(8), then release the graduated disc from
the base, position it in relation to the fixed
reference, without rotating the crankshaft,
at the value obtained from the arithmetical
average (for example 9 = the average of
10 and 8), then lock the graduated disc
again.
3. Rotate the crankshaft pulley in a clockwise direction until the " 0 " ' on the graduated disc coincides w i t h the fixed reference.
4. Rotate the crankshaft 10 in a clockwise
direction and an anti-clockwise direction
checking on the dial gauge that the value
for the clockwise rotation of
the
crankshaft is the same as the one for the
anti-clockwise rotation.
If the readings on the dial gauge after
the check for point 4 are not the
same, repeat the procedure
described
on the previous
pages.
28
Marea-Marea Weekend
Introduction
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29
Introduction
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00.
30
Marea-Marea Weekend
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P4F31 BA02
should
of the
31
Introduction
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00.
P4F32BA02
NOTE
32
Marea-Marea Weekend
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oo.
Loosen the nut fixing the belt tensioner and, using tool 1860845000, make sure that the moving reference (1) for the belt tensioner coincides w i t h the fixed reference (2) on the crankcase. Tighten the nut
fixing the belt tensioner to a torque of 2.5 daNm and then proceed w i t h refitting the components removed previously.
Copyright
by Fiat Auto
33
Introduction
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00.
NOTE
34
Marea-Marea Weekend
Introduction
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1. Using a screwdriver, apply force to the automatic tensioner tab so that the tensioner
is placed in the maximum tension position, then tighten the nut fixing the tensioner to the support.
35
Introduction
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00.
36
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00.
P4F16EX01
1. Loosen the nut illustrated for the tensioning device, release the belt tension, then
remove the belt.
Refitting and tensioning the timing belt
2. Remove the bolt (1) illustrated fixing the
oil pump; position the pin for tool
1860905000 in place of the bolt. Then fit
the timing belt on the crankshaft drive
gear only.
3. Position tool
1860905000
on
the
crankshaft gear and the pin ( 3 ) ; rotate the
crankshaft through small movements until
the dowel (2) matches w i t h the opening
( 1 ) . In this position the first cylidner is at
T.D.C.
4. Using tool 1860831000, rotate the
camshaft pulley until the f o l l o w i n g alignments are achieved:
- up to engine n 416499
the reference (1) on the pulley should
move 7 teeth (in a clockwise direction)
in relation to the reference (2) on the
tappet cover.
- from engine n 416450
the reference (1) on the pulley should
be aligned w i t h the reference (3) on the
tappet cover.
NOTE
P4F13GX01
37
Introduction
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00.
Crankshaft gear
Fixed pulley
Timing pulley
Injection pump pulley
5. Automatic tensioner
6. Water pump
For all the pre and post modification engines,
the fitting and timing of the new belts should
be carried out following the alignment of the
transverse references (A) on the back of the
timing belt and the respective references on
the pullies.
NOTE
Fit the belt so that the arrow is pointing in the direction of rotation of the
engine.
3. Exert force at the point shoen on the automatic tensioner placing the moving reference (1) for the tensioner in the maximum
tension position, then lock the belt t e n sioner fixing nut.
4. For the 1910 TD 75 version, release the
injection pump pulley by undoing the
bolts positioned previously.
38
Introduction
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oo.
For the 1910 TD 100 version, fix the injection pump pulley tightening the fixing
bolts to the recommended torque and remove pin 1860965000 from the housing.
2. Rotate the crankshaft through t w o revolutions in its direction of rotation, release the
nut fixing the tensioner and ensure that
the fixed reference (1) on the tensioner
support coincides with the moving reference (2) on the belt tensioner. Lock and
then tighten the tensioner nut to the recommended torque. Proceed w i t h refitting
the components removed previously reversing the order carried out for the operations described until now.
Marea 2387 T D
P4F12FX05
39
Introduction
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00.
40
Marea-Marea Weekend
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41
Introduction
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P4F17FX01
1. Working with a spanner cut to the appropriate size, remove the fixed pulley for the
auxiliary shaft belt, then remove the lower
shield for the timing belt underneath. Also
remove the support for the connecting rod
undoing the fixing bolts.
2. Loosen the belt tensioner nut, remove the
belt from the injection pump and timing pullies, raise the lift, position the flywheel lock
1860898000, remove tool 1860905000
previously positioned to determine T.D.C,
then remove the timing belt.
1.
2.
3.
4.
5.
6.
Crankshaft gear
Fixed pulley
Timing pulley
Injection pump pulley
Automatic tensioner
Water pump
P4F15CX02
42
Introduction
Marea-Marea Weekend
Planned maintenance
oo.
1. Exert force at the point shown on the automatic tensioner placing the moving reference (1) for the tensioner in the maximum tension position.
2. Release the injection pump drive pulley by
undoing the t w o bolts positioned previously.
3. Rotate the crankshaft through t w o revolutions in its direction of rotation, release the
nut fixing the tensioner and ensure that
the fixed reference (1) on the tensioner
support coincides with the moving reference (2) on the belt tensioner. Lock and
then tighten the tensioner nut to the recommended torque. Proceed w i t h refitting
the components previously
removed
when removing the actual belt.
4. To refit the auxiliary shaft drive belt, place
tool 1860968000 on the moving pulley
(not locked) in line w i t h the appropriate
openings, rotate the lever and tension the
belt. Lock the bolt fixing the moving pulley in this position. Undo the bolt securing spanner 1860966000 (shown in the
inset), then reposition the bolt fixing the
auxiliary shaft pulley. The automatic tensioner pre-loaded spring ensures the correct tension for the belt.
\
43
Introduction
Marea-Marea Weekend
Planned maintenance
00.
1747 16v
1998 20v
Champion RC8BYC
Golden Lodge 2HLDR
NGK BKR6EKC
Fiat 7GBMSR
Champion RC7BMC
Golden Lodge 2HLDR
NGK BKR6EKC
Fiat 7GBMSR
Champion RC7BMC
operations
44
Introduction
Marea-Marea Weekend
Planned maintenance
oo.
45
Introduction
Marea-Marea Weekend
Planned maintenance
00.
P4F46BA01
46
Introduction
Marea-Marea Weekend
Planned maintenance
oo.
m
M
CHECK
GEARBOX/DIFFERENTIAL
OIL LEVEL
m
M
CHECK
AUTOMATIC
OIL LEVEL
( M a r e a 1581 16v)
NOTE
GEARBOX
47
Introduction
Marea-Marea Weekend
Planned maintenance
00.
// the check is carried out at low gearbox oil temperatures, check that the
level of the oil is within the reference
on the side of the dip stick marked
COLD. If possible, check the oil level
again at the correct temperature (70 80 C).
If the oil level is low, notify the Customer of
any leaks or seepage and the need to solve
these problems. To refill, extract the dip stick
and, using a clean container in order not to
contaminate the oil, introduce the appropriate amount of gearbox oil. The re-check the
level using the dip stick and check that there
are no leaks from the drain plug.
Recommended gearbox oil: T U T E L A G I / 2
Periodic replacement: 3 litres (2.7 kg)
CHANGE E N G I N E O I L AND F I L T E R
E] EI
- With the engine hot, remove the oil filler
plug;
- remove the engine oil dip stick.
When the engine is hot, work very
carefully inside the engine compartment as there is a danger of scalding.
Remember that when the engine is hot
the electric fan could come on with the
risk of injury.
Raise the vehicle, remove the lower engine
compartment shield and undo the drain
plug and let the oil drain completely into a
suitable container.
Take great care when removing the
drain plug as the oil could be very
hot.
- Working from underneath the vehicle w i t h
a special tool, release the oil filter and remove it;
NOTE
For the 1747 16v and 1998 20v versions, it is not necessary to remove the
lower engine shield because the drain
plug is accessible from the rear of the
engine and the oil filter can be reached
by removing the special flap on the
engine compartment lower shield.
48
Introduction
Marea-Marea Weekend
Planned maintenance
oo.
- lower the vehicle, introduce the recommended type of oil in the quantities stated;
- check that the oil level is correct using the dip stick;
- reposition the oil filler plug, let the engine idle for around 2 minutes, switch off the engine and wait for
several minutes, then check the level of the oil and make sure there are no leaks.
Marea 2387 T D
On the 2387 TD version, to replace the engine oil filter, after having removed the lower
engine compartment shield it is necessary to
release the bracket (1) in order t o move aside
the pipes illustrated and allow the replacement of the actual filter.
P4F49BA01
NOTE
If the vehicle is mainly used in one of the following particularly harsh conditions:
- t o w i n g a trailer or caravan
- dusty roads
- short, repeated journies (less than 7-8 km) at sub-zero temperatures
- engine often idling or driving long distances at low speeds
notify the Customer of the need to change the oil more often than indicated in the Planned Maintenance
Programme.
The engine oil used and the oil filter replaced contain substances which are dangerous to the environment. The used oil and filters should be deposited in special containers and then
disposed
of in accordance with the laws in force.
49
Introduction
Marea-Marea Weekend
Planned maintenance
00.
NOTE
50
For versions
with a hydraulic
clutch
(Marea 1998 20v and 2387 TD) it is necessary to drain the fluid in the circuit by
connecting a flexible pipe to the clutch
operating cylinder bleed screw, loosen it
and, acting on the control pedal, drain the
fluid into a suitable container.
Proceed
with bleeding the hydraulic clutch circuit
in the same way as described for the braking circuit, using the clutch pedal instead.
Print no.
506.763/04
Marea-Marea Weekend
Introduction
Planned maintenance
00.
EH R E P L A C E T H E POLLEN F I L T E R
To gain access to the pollen filter it is necessary to lift up the trim shown in the diagram, then undo the bolts shown and remove the pollen filter access flap.
Copyright
by Fiat Auto
Failure to replace the filter can considerably reduce the efficiency of the
climate control system.
If the vehicle is o ften used in dusty or
strongly polluted areas, advise the
Customer of the need to rep/ace the
filter element more often; it should
be especially replaced if a decrease
in the flow rate of the air introduced
into the passenger compartment
is
noticed.
51
Marea-Marea Weekend
' . . 'y ,
;- .'
Engine
Contents
10.
page
REMOVING-REFITTING
- Removing-refitting power unit
10
16
CYLINDER
17
R E M O V I N G - R E F I T T I N G RADIATOR
- Removing-refitting radiator
23
- Radiator filling procedure for heated versions
25
- Radiator -filling procedure for air-conditioned versions
27
Engine
Removing-refitting
10.
P4F01AX05
Engine
Marea-Marea Weekend i Q |
12v
Removing-refitting
10.
Publication no.
506.763
Marea-Marea Weekend I 0 i
12v
Engine
Removing-refitting
10.
P4F03AX02
Engine
12v
Removing-refitting
10.
Publication no.
506.763
Marea-Marea Weekend !|
12v
Engine
Removing-refitting
10.
P4F05AX02
Engine
Marea-Marea Weekend @
12v
Removing-refitting
10.
Marea-Marea Weekend @
Engine
12v
Removing-refitting
10.
The hydraulic jack should have a capacity of at least 1000 kg and be high
enough to allow the power unit to be
taken out from below. For this purpose, note maximum possible
lift
height and minimum possible
jack
height.
Engine
Marea-Marea Weekend l g |
12v
Removing-refitting
10.
Publication no.
506.763
Engine
Removing-refitting
10.
NOTE
pipes
- Take great care not to damage individual components when the power unit is fitted
- When fitting the coo/ant lines, align groove on rubber hose with ridge on associated
rigid
sleeve. When filling the cooling system, refer to section on "Removing-refitting
radiator".
First secure engine end mount by tightening retaining bolts to the body by the specified
Then secure gearbox end mount and lastly the central differentia/ end mount.
Ensure that the power unit mounting points are properly
secured.
Clutch pedal
torque.
height
Engine
12v
10.
REMOVING
BELT
REFITTING
AUXILIARY
<1>
2. View of auxiliary component belt fitted on
vehicle
1. Alternator
2. Power steering
3. Automatic tensioner
4. Of crankshaft pulley
5. Auxiliary component belt
Prevent the belt coming into contact
with oil or solvents which could affect
the elasticity of the rubber with consequent loss in grip.
10
Engine
12v
10.
Refitting
2. Fit the new belt on the pulleys described
previously, then restore belt tension by releasing the automatic tensioner.
The preloaded
automatic
tensioner
spring will ensure correct belt tension
once crankshaft has turned through a
few revolutions.
1. Alternator
2. Power steering
3. Automatic tensioner
4. Of crankshaft pulley
5. Fixed guide pulley
6. Air conditioner compressor pulley
7. Auxiliary component belt
11
Marea-Marea Weekend
Engine
Replacing timing belt
git^v
10.
P4F12AX01
P4F12AX02
REPLACING T I M I N G BELT
belt, redescribed
P4F12AX03
P4F12AX04
12
Marea-Marea Weekend
Engine
12v
10.
13
Engine
Replacing timing belt
Marea-Marea Weekend I f g ^
10.
Remove bolts retaining 1st - 2nd - 3rd 4th cap on the exhaust side. Loosen the
intake side bolts, lift the lubrication duct,
remove the 2nd cap and replace w i t h t i m ing adjustment tool 1860899000. Then
tighten all caps provisionally to a torque of
1 daNm.
14
Marea-Marea Weekend l |
Engine
12v
10.
3. Remove tool 1860901000 previously positioned on the camshaft gear and turn the
cranskshaft through t w o turns in its direction of rotation. Loosen the tensioner retaining nut and align mobile indicator (1)
with the fixed reference ( 2 ) . Then lock
and tighten the tensioner retaining nut to
the specified torque.
4. Refit the parts removed previously, taking
care to refit crankshaft auxiliary drive pulley by positioning hole on pulley over
dowel (1) on crankshaft pinion. Then
check engine timing again and check that
notch (2) on pulley is aligned w i t h detent
(3) on timing belt cover.
15
Engine
Marea-Marea Weekend
12v
10.
3. Remove
head.
16
coolant
pump
from
cylinder
Engine
12V
10.
Rep/ace
ting.
pump
O-rings
before
refit-
REMOVING - R E F I T T I N G C Y L I N D E R HEAD
Disconnect
battery negative
then proceed as follows.
lead,
17
Engine
Marea-Marea Weekend @ t ^ .
10.
18
Marea-Marea Weekend
12v
Engine
Removing - refitting cylinder head
10.
P4A19AX02
con-
located
19
Engine
10.
20
Marea-Marea Weekend
Engine
112v
10-
P4F21AX02
21
Engine
10.
Refitting
1. Position cylinder head gasket with the
wording " A L T O " facing the operator.The
cylinder head gasket fitted in this case is
ASTADUR type. This type of gasket is
made from a special material which u n dergoes a process of polymerisation while
the engine is running and therefore hardens considerably during use.
The following precautions must be taken in
order to ensure gasket polymerisation occurs:
- keep the gasket sealed in its plastic bag
and take out only shortly before fitting;
- do not oil the gasket or contaminate w i t h
oil. Ensure cylinder head and crankcase
surfaces are thoroughly clean.
Then fit the cylinder head and tighten retaining screws to a torque of 2 daNm. O b serve the tightening pattern shown in the
figure.
2. Use wrench 1852154000 to retighten retaining bolts to a torque of 4 daNm, f o l lowing the same tightening order described previously.
22
Marea-Marea Weekend ! g |
Engine
12v
10.
fan-radiator
23
Engine
Marea-Marea Weekend l ^ * *
10.
P4F24AX01
P4F24AX02
With the radiator assembly on the bench, remove the fan by disconnecting the fan thermal activation
contact and unscrewing the fastenings shown (fig. 1). Then remove the air shroud (fastenings are
shown in fig. 2).
Reverse removal instructions to refit
RADIATOR F I L L I N G P R O C E D U R E FOR H E A T E D V E R S I O N S
- Ensure all cooling system components are completely empty before beginning filling procedure.
- Open the three bleed plugs (A - B - C) shown in the figure overleaf.
- Slowly pour in fluid (mixture consisting of 50% water and 50% paraflu), until the fluid emerges from
bleed fitting (A) on the radiator, then tighten fitting.
- Continue to pour in fluid until it emerges from bleed fitting (B) located on heater sleeve, then tighten
the fitting.
- Carry on filling until fluid emerges from bleed fitting (C) located on intake manifold outlet pipe. Check
in expansion tank to see that fluid level is beyond the M A X level, then tighten bleed fitting (C).
- Start up engine and leave to idle.
- Loosen bleed fitting (C) and simultaneously increase the engine revs slightly to prevent any residual
air emerging. Then tighten bleed fitting (C) as the fluid emerges. Repeat the same operation for bleed
fitting (B).
- Pump accelerator pedal gradually and at intervals until revs rise to about 4000 rpm.
- Wait until the fan has come on at least twice.
- Turn off the engine and check that fluid level is between the MIN and MAX marks on the expansion
tank (carry out operation w i t h engine cold).
- Top up without exceeding the M A X mark, if required.
NOTE
24
If fluid boils during operation, stop filling in order to find the defective
it. Then repeat filling operation.
component
and
replace
25
Engine
Marea-Marea Weekend
10.
RADIATOR F I L L I N G P R O C E D U R E FOR A I R - C O N D I T I O N E D V E R S I O N S
- Ensure all cooling system components are completely empty before beginning filling procedure.
- Open bleed fittings ( A - B - C - D ) shown in the figure overleaf.
- Slowly pour in fluid (mixture consisting of 50% water and 50% paraflu), until the fluid emerges from
bleed fittings (A) and (B) on the radiator, then tighten fittings.
- Continue to pour in fluid until it emerges from bleed fitting (C) located on heater sleeve, then close the
fitting.
- Continue filling until fluid emerges from bleed fitting (D) on the intake manifold outlet pipe. Then
tighten the fitting.
- Continue filling until the fluid reaches a level corresponding to the MAX mark shown on the expansion tank.
- Start up engine and leave to idle for 2 or 3 minutes.
- Pump the accelerator every 30 seconds to take engine speed gradually up to about 4000 rpm. Simultaneously pour coolant into the expansion tank without ever exceeding the M A X mark. Continue this
operation until the cooling fan comes on for the first time.
- Wait until the fan has come on at least twice, then turn off the engine.
- Leave the engine to cool d o w n and top up, if necessary, until the fluid level is between the M I N and
MAX marks on the expansion tank.
NOTE
26
If the fluid boils during the operations described previously, stop the procedure
the defective component and replace it. Then repeat the filling
procedure.
in order to find
Marea-Marea Weekend
Engine
Removing - refitting radiator
ia
27
Marea-Marea Weekend
ifit
Engine
16v
Contents
10.
page
REMOVING-REFITTING
- Removing-refitting power unit
REPLACING AUXILIARY COMPONENT
BELT
11
12
16
18
25
R E M O V I N G - R E F I T T I N G RADIATOR
- Removing-refitting radiator
27
Copyright
Fiat
Auto
Marea-Marea Weekend A j
16v
Engine
Removing-refitting
10.
P4F01BX03
P4F01BX04
Engine
Marea-Marea Weekend A |
16v
Removing-refitting
10.
Marea-Marea Weekend
16v
Engine
Removing-refitting
10.
P4F03BX05
Engine
Marea-Marea Weekend
16v
Removing-refitting
10.
Marea-Marea Weekend
16v
Engine
Removing-refitting
10.
P4F05BX02
1. Drain power steering fluid, then disconnect fluid intake from reservoir and pressure delivery line from power steering
pump. Arrange a suitable container below
the vehicle to recover remaining fluid.
2. Unstake and then remove wheel hub retaining nut (gearbox end and timing e n d ) .
3. Remove gearbox end wheelarch plastic
protection by undoing screws and retaining studs shown in the figure. Disconnect
brake pad wear sensor connection to remove protection.
4. Remove nut retaining steering link head to
pillar, then remove from pillar arm by
means of extractor 1 8 4 7 0 3 8 0 0 0 (repeat
the operation for both heads).
Engine
Marea-Marea Weekend i |
16v
Removing-refitting
10.
P4F06BX02
Engine
16v
Removing-refitting
10.
side
engine
Engine
Marea-Marea Weekend
16v
Removing-refitting
10.
NOTE
tools
instructions.
- Prepare the engine bay to fit the power unit. Take care to connect all electrical leads, pipes
etc. in order to avoid any possible hitches;
- Take great care not to damage individual components when the power unit is fitted
- When fitting the coolant lines, align groove on rubber hose with ridge on associated rigid
sleeve. When filling the cooling system, refer to section on "Removing-refitting
radiator".
First secure engine end mount by tightening retaining bolts to the body by the specified
Then secure gearbox end mount and lastly the central differential end mount.
Ensure that the power unit mounting points are properly secured.
Clutch pedal
torque.
height.
Marea-Marea Weekend
16v
Engine
Replacing auxiliary component belt
10.
P4F09BX02
Refitting
4. Fit the new bolt and turn the tensioning
device by means of the hexagonal hole on
the device itself. Then tighten screw ( 1 ) .
Engine
Marea-Marea Weekend @
16v
10.
10
Marea-Marea Weekend @
Engine
16v
10.
Refitting
1. Tension power steering pump drive belt
by adjusting regulation screw: use tool
1895762000 to check tension is between
32 - 45 daN within 30 minutes of fitting
the new belt.
11
Engine
Marea-Marea Weekend
16v
10.
12
Marea-Marea Weekend
16v
Engine
Replacing timing belt
10.
13
Engine
Marea-Marea Weekend
ti^iev
10.
P4F14BX01
P4F14BX02
P4F14BX04
14
Marea-Marea Weekend
16v
Engine
Replacing timing belt
10.
15
Engine
Marea-Marea Weekend
i f i g i 16v
10.
4. Remove screw (1) shown in figure in order to allow positioning of camshaft drive
belt tensioning tool 1860876000.
16
Marea-Marea Weekend
Engine
i f f i * *
10.
Refitting
As a further check, refit the gauge, measure
t.d.c. and check that tools 1 8 6 0 8 7 4 0 0 0 fit
onto the timing shaft. Then refit shaft covers
and parts removed previously.
P4F17BX03
17
Engine
Marea-Marea Weekend
3 b 16v
10.
P4F01BX02
REMOVING-REFITTING
HEAD
CYLINDER
18
Marea-Marea Weekend A i
16v
Engine
Removing-refitting cylinder head
10.
P4F19BX02
P4F19BX05
19
Engine
Marea-Marea Weekend
3|i
16v
10.
P4A20CX02
20
Marea-Marea Weekend
Engine
16v
10.
1. Disconnect idle speed actuator, air t e m perature sensor and throttle potentiometer
connections from intake manifold. Also
remove brake servo vacuum line and fuel
vapour recovery lines.
2. Remove power steering pump drive belt
cover.
3. Loosen tension of power steering pump
drive belt, then remove pump fastenings
and place to one side w i t h o u t disconnecting lines.
4. Remove heat shield from exhaust manifold.
Remove alternator drive belt and timing belt as described in the previous
section. If the cylinder head does not
require
attention,
position
tools
1860874000 for camshaft timing adjustment as described. Otherwise the
above tools may be positioned
subsequently at the bench. See engine
overhaul manual.
21
Engine
Marea-Marea Weekend
t$i 16v
10.
22
Engine
10.
23
Engine
Marea-Marea Weekend
i j p i
16v
10.
24
Marea-Marea Weekend
Engine
^ 16v
10.
P4F25BX02
25
Engine
Marea-Marea Weekend l { |
16v
10.
P4A26CX04
26
Marea-Marea Weekend
16v
Engine
Removing-refitting radiator
10.
REMOVING-REFITTING RADIATOR
1. Disconnect battery negative lead, then remove air intake shroud by undoing bolts
shown in figure.
2. Position a suitable container t o collect
coolant and remove the t w o sleeves
shown in the figure, w h i c h carry coolant
to and from the expansion tank.
3. Remove the fan by undoing the retaining
screws. Take care to disconnect supply
connections.
4. Remove bolts shown in figure, w h i c h secure radiator to front beam. Then lift the
radiator up out of the engine bay.
27
Engine
Removing-refitting radiator
10.
If the coolant boils during the operations described above, stop the procedure
the defective component and replace it. Then repeat the filling
procedure.
in order to find
28
If the fluid boils during the operations described previously, stop the procedure
the defective component and replace it. Then repeat the filling
procedure.
in order to find
Marea-Marea Weekend
Engine
Removing-refitting radiator
ia
Engine cooling circuit bleed screw positions (heated and air conditioned version)
29
Marea-Marea Weekend
.
Engine
.
Index
10.
page
REMOVING-REFITTING
- Removing-refitting power unit
REPLACING AUXILIARY SHAFT BELT
- Removing-refitting auxiliary shaft drive
11
17
22
R E M O V I N G - R E F I T T I N G RADIATOR
- Removing-refitting radiator
- Procedure for filling the engine cooling
circuit (versions w i t h heater)
- Procedure for filling the engine cooling
circuit (version with air conditioning)
23
24
26
Marea-Marea Weekend
ft
16v
Engine
Removing-refitting
10.
R E M O V I N G - R E F I T T I N G POWER U N I T
Position the vehicle on a lift, disconnect the
negative lead from the battery, remove the
front wheels, then proceed as illustrated below:
1. Disconnect the air inlet duct acting on the
bolts shown in the diagram w h i c h fix it t o
the front cross member.
2. Lift the protective cover for the positive
pole, then disconnect the relevant cable;
undo the nut fixing the battery to the drip
tray and remove it from the engine c o m partment.
3. Remove the air inlet duct complete w i t h
flow meteracting on the bands s h o w n in
the diagram, taking care to disconnect the
appropriate electrical connection.
4. Undo the nuts fixing the cables s h o w n in
the diagram to the positive battery terminal.
Engine
Marea-Marea Weekend
ft
16v
Removing-refitting
10.
Marea-Marea Weekend
ft
16v
Engine
Removing-refitting
10.
Engine
Marea-Marea Weekend
ft
Removing-refitting
10.
Marea-Marea Weekend
ft
16v
Engine
Removing-refitting
10.
1. Drain the air conditioning system c o n necting the appropriate equipment to the
needle valves shown in the diagram. Proceed as described in Section 50 - Auxiliary
units in this manual.
2. Disconnect the coolant pipe and the anti-evaporation pipe s h o w n , then remove
the connecting rod.
3. Remove the plastic shield s h o w n in the d i agram, acting on the fixing bolts; in order
to be able to remove it, the windscreen
wiper blade has to be removed.
4. Disconnect the fuel supply and return
pipes from the manifold at the points
shown.
5. Working from inside the vehicle, remove
the glove compartment.
Engine
Marea-Marea Weekend
Removing-refitting
10.
1. Disconnect the electrical supply connection for the glove compartment light.
2-3. Disconnect the electrical connections
from the injection/ignition control unit
and the fuses/relays from the mounting
bracket, then extract the wiring (1)
through the opening made in the bulkhead between the engine compartment
and the passenger compartment.
4. Disconnect the vacuum pipe from the
brake servo.
5. Raise the vehicle, then remove the plastic
protection from the wheel arch, gearbox
side.
Marea-Marea Weekend
ft
1H16V
Engine
Removing-refitting
10.
P4F07CX0S
Engine
Removing-refitting
10.
P4F08CX01
P4F08CX02
P4F08CX03
P4F08CX04
Marea-Marea Weekend
Engine
ft 16v
Removing-refitting
10.
When refitting this support, in order to avoid tension from being created on the support planes for the
gearbox w i t h consequent distortion and subsequent loss of fluid, the following cycle for tightening the
fixing bolts should be scrupulously followed:
- Tighten bolts (1) and (2) to a pre-torque of 0.5 daNm;
- Tighten bolts (3) and (4) to a pre-torque of 0.5 daNm, then tighten them to the recommended torque;
- Tighten bolts (1) and (2) to the recommended torque.
4. Lower the hydraulic jack and extract the power unit from the lower part of the vehicle.
Lower the hydraulic jack gradually and check that the power unit and supporting
correctly positioned and balanced.
equipment
are
Do not move the power unit when installed on the hydraulic jack.
In order to move the power unit, use a hydraulic hoist equipped with tools 1860592000
having previously re/eased it from the supporting tool.
after
Engine
Marea-Marea Weekend
ftu*
10NOTE
In order to refit the power unit simply reverse the order of the operations
moval.
described
- Prepare the engine compartment for inserting the power unit, taking care to position all the
electrical wires, pipes, etc. so that there are no problems when refitting;
- Take the necessary care, when fitting the power unit, to avoid damaging the individual components;
- When refitting the engine coolant pipes, make sure that the notch in the flexible (rubber) pipe
coincides with the projection on the rigid coupling hose. To refill the engine cooling circuit,
refer to the instructions given in this section in the chapter "Removing-refitting
radiator".
Firstly, fix the engine side support tightening the bolts fixing it to the bodyshell to the recommended torque, then fix the gearbox side support and lastly the differential side centre support.
Make sure that the power unit support points have been fixed correctly.
Clutch pedal
height.
A
10
Marea-Marea Weekend
ft
16v
Engine
Replacing timing belt
10.
11
Engine
Marea-Marea Weekend
ftu*
10.
12
Marea-Marea Weekend
ft
16v
Engine
Replacing timing belt
10.
P4F13CX02
13
Engine
Marea-Marea Weekend
ft**
10-
14
Marea-Marea Weekend
ft
mi6v
Engine
Replacing timing belt
10.
Fitting timing belt
NOTE
avoiding
in order
structure
Fit the belt so that the arrow is pointing in the direction of rotation of the
engine. There are 3 reference
marks
on the belt which should
coincide
during the first fitting of the new belt
with the references on the crankshaft
gear and the camshaft pullies, exhaust side and inlet side.
15
Engine
Marea-Marea Weekend
ft
16v
10.
Loosen the nut fixing the belt tensioner and, using tool 1860845000, make sure that the moving reference (1) for the belt tensioner coincides w i t h the fixed reference (2) on the crankcase. Tighten the nut
fixing the belt tensioner to a torque of 2.5 daNm and then refit the components removed previously.
16
Marea-Marea Weekend
ft**
Engine
Removing-refitting cylinder head
10.
REMOVING-REFITTING C Y L I N D E R HEAD
Disconnect the negative battery lead,
remove the auxiliary shaft drive belt
and the timing belt, as described
in
the previous paragraphs, then proceed as described
below:
1. Drain the coolant acting on the special tap
shown in the diagram.
2. Remove the air intake duct acting on the
fixings shown in the diagram.
3. Remove the pipe shown in the diagram
connected to the expansion tank.
4. Remove the radiator coolant inlet and outlet pipes shown in the diagram.
17
Engine
Marea-Marea Weekend
ft
miev
10.
18
Marea-Marea Weekend
ft 16v
Engine
Removing-refitting cylinder head
10.
fixing
19
Engine
Marea-Marea Weekend
fti*
10.
1. Undo the bolt fixing the ignition coil supply wiring retaining bracket.
2. Remove the nut fixing the engine oil dip
stick to the exhaust manifold.
3. Remove the nuts fixing the exhaust manifold to the cylinder head, then remove it
from the engine compartment after having
disconnected it from the fixings to the first
section of the exhaust pipe shown in the
inset.
4. Undo the bolts fixing the cylinder using
tool 1852154000, then remove the cylinder head complete w i t h inlet valve chest
from the engine compartment.
5. Separate the inlet valve chest from the
cylinder head acting on the fixing nuts.
20
Marea-Marea Weekend
Engine
Removing-refitting cylinder head
10.
Refitting
1. Position the cylinder head gasket w i t h the
word "ALTO" facing towards the operator.
ASTADUR
type cylinder head gaskets
are used. On account of the special
material from which they are made,
these gaskets undergo a polymerization process during the operation of
the engine, so that they harden considerably during usage. In order for
the polymerization
of the
cylinder
head gaskets to take place it is necessary:
21
Engine
Marea-Marea Weekend
10.
R E M O V I N G - R E F I T T I N G W A T E R PUMP
:YIA
22
Marea-Marea Weekend
ft
i i M i 6 v
Engine
Removing-refitting radiator
10.
REMOVING-REFITTING RADIATOR
1. Disconnect the negative battery lead, then
drain the coolant acting on the appropriate tap shown in the diagram.
2. Remove the air intake duct acting on the
fixing bolts shown in the diagram.
3. Remove the t w o coolant inlet and outlet
pipes shown from the radiator.
4. Disconnect the supply connections for the
electric fan, undo the bolts fixing it to the
radiator, then remove it from the vehicle.
5. Undo the upper bolts and then loosen the
lower ones, fixing the condenser t o the radiator.
23
Engine
Marea-Marea Weekend
ft
16v
Removing-refitting radiator
10.
Move the radiator away from the condenser and suitably attach the latter, then
extract the radiator from the engine compartment.
NOTE
This last operation should be carried out after the engine has been allowed to cool down.
If, during the operations described in point 5, the coo/ant boils, then the procedure should be
halted to search for the defective component which should be replaced. The procedure
should
then be repeated.
24
Marea-Marea Weekend
f i
Engine
Removing-refitting radiator
10
Engine cooling circuit (version with heater)
P4F25CX01
Engine
Marea-Marea Weekend
@^
Removing-refitting radiator
10.
P R O C E D U R E FOR R E F I L L I N G THE E N G I N E COOLING C I R C U I T (version with air conditioning)
1. Make sure that the cooling system components (engine, heater, radiator, etc.) are completely empty
2. Open the t w o bleed valves (A and B) on the radiator.
3. Disconnect the connecting pipe between the thermostat and the butterfly casing (shown by the ar
row in the diagram overleaf). Blow through with a jet of compressed air in the pipe in order to empty
it in the section thermostat - butterfly casing - expansion tank.
Restore the connection for the pipe using a new band.
4. Fill the system slowly introducing coolant (a mixture of 50% water and paraflu), until fluid comes out
of the bleed valves (A and B) on the radiator, then close the bleed valves (A and B).
Continue filling until the MAX level is reached on the expansion tank.
5. Start up the engine and let it idle for 2 - 3 mins. Then carry out gradual, periodic accelerations until
4000 rpm is reached, at the same time introducing the coolant into the expansion tank not beyond
the MAX level.
This operation should be carried out until the engine cooling fan comes on for the first time.
6. Top up, if necessary,, until a midway point between the M I N and M A X levels on the expansion tank
is reached.
NOTE
This last operation should be carried out after the engine has been allowed to cool down.
If, during the operations described in point 5, the coo/ant boils, then the procedure should be
ha/ted to search for the defective component which should be replaced. The procedure
should
then be repeated.
26
Marea-Marea Weekend
ft**
Engine
Removing-refitting radiator
P4F27CX01
Engine
Index
'
'
10.
page.
REMOVING-REFITTING
1
drive
12
12
R E M O V I N G - R E F I T T I N G RADIATOR
- Removing-refitting radiator
- Procedure for fillingengine cooling circuit (version w i t h heater)
- Procedure for filling engine cooling circuit (version with air conditioning)
12
14
16
Marea-Marea Weekend
ft
Engine
20v
Removing-refitting
10.
3. Disconnect the negative and positive battery leads, then remove the battery from
the engine compartment w o r k i n g on the
nut fixing the retaining bracket.
4. Remove the fixings, shown in the diagram, for the connecting pipe between the
air filter and the butterfly casing.
Copyright
by Fiat Auto
Engine
Marea-Marea Weekend
\)20v
Removing-refitting
10.
P4F02DX04
Marea-Marea Weekend i f p
20v
Engine
Removing-refitting
10.
P4F03DX02
1. Disconnect the gear selector lever removing the split pin shown in the diagram.
2. Disconnect the accelerator cable from the
butterfly casing.
3. Disconnect the injection cable/front cables couplings shown in the diagram.
4. Undo the nuts fixing the cables shown in
the diagram to the positive battery terminal.
5. Disconnect the fuel supply and return
pipes acting on the bands s h o w n and releasing them from the mounting bracket.
P4F03DX05
Engine
Marea-Marea Weekend
ft
20v
Removing-refitting
10.
P4F04DX05
Marea-Marea Weekend
ft
20v
Engine
Removing-refitting
10.
Engine
Marea-Marea Weekend ! f t
20v
Removing-refitting
10.
P4F06DX05
Engine
Removing-refitting
i IB
^^=^^
= = a a :
^==_^=
s =
10.
P4F07DX02
1. Undo the retaining bracket for the injection cables from the bulkhead between
the passenger compartment and t h e e n gine compartment and disconnect t h e
connector shown in theinset.
2. Working from inside the vehicle, remove
the glove compartment.
3. Disconnect the electrical supply connector for the glove compartment light.
4. Disconnect the electrical connection from
the injection/ignition control unit and t h e
fuses/relays from the appropriate m o u n t ing bracket, then extract the w i r i n g
through the opening in the bulkhead between the engine compartment and t h e
passenger compartment.
5. Disconnect the first section of the exhaust
pipe acting on the fixings s h o w n in the d i agram;.
Engine
Marea-Marea Weekend @ i
20v
Removing-refitting
10.
Marea-Marea Weekend
$20v
Engine
Removing-refitting
10.
Engine
Marea-Marea Weekend
ft
20v
Removing-refitting
10.
10
Marea-Marea Weekend ! f t
20v
Engine
Removing-refitting
10.
11
Engine
Marea-Marea Weekend
ft v
20
Removing-refitting
10.
NOTE
In order to refit the power unit simply reverse the order of the operations described
moval.
- Prepare the engine compartment for the installation of the power unit, taking care to position
all the electrical wires, pipes, etc. so that they do not create an obstruction for the fitting;
- Take care when fitting the power unit to avoid damaging the individual
components;
- When refitting the engine coolant pipes, make sure that the notch in the flexible (rubber) pipe
coincides with the projection on the rigid hose. To refill the engine cooling circuit, refer to the
instructions in the chapter "Removing-refitting
radiator".
Firstly fix the engine side support, tightening the bolts fixing it to the bodyshell to the recommended torque, then fix the gearbox side support and lastlythe differential side centre support.
Make sure that the power unit support points are correctly fixed. Tighten the bolts fixing the
cross member, the track control arm and the rods connecting the anti-roll bar tothe track control
arm to the recommended
torque.
Check the front wheel
geometry.
R E M O V I N G - R E F I T T I N G T I M I N G DRIVE B E L T
The timing belt cannot be removed-refitted on the vehicle because their is not sufficient space between
the timing belt cover and the bodyshell to carry out the operation. This replacement should be carried
out w i t h the engine at the bench; refer to the description in the engine overhaul manual for this engine
type.
R E M O V I N G - R E F I T T I N G W A T E R PUMP
The water pump cannot be removed-refitted on the vehicle because there is not sufficient space between the pump and the bodyshell. It has to be replaced with the engine at the bench; refer to the description in the engine overhaul manual for this engine type.
12
Engine
Removing-refitting radiator
10.
P4F13DX02
P4F13DX05
13
Engine
20v
Removing-refitting radiator
10.
2. Move the radiator away from the condenser and suitably attach the latter, then
extract the radiator from the engine compartment.
This last operation should be carried out after the engine has been allowed to cool down.
If, during the operations described in point 4, the coolant boils, then the procedure should be
halted to search for the defective component which should be replaced. The procedure
should
then be repeated.
14
Marea-Marea Weekend
ip
Engine
Removing-refitting radiator
10.
Positioning the engine cooling circuit bleed valves (version with heater)
P4F15DX01
15
Engine
Marea-Marea Weekend 2 0 ,
Removing-refitting radiator
10.
P R O C E D U R E F O R F I L L I N G ENGINE C O O L I N G C I R C U I T (version with air conditioning)
1. Make sure that the cooling system components (engine, heater, radiator, etc.) are completely empty.
2. Open the t w o bleed valves (A and B) on the radiator, the bleed valve (C) on the heater hose and the
bleed valve ( D ) on the rigid coolant inlet pipe.
3. Remove the rubber hose (E); blow through the hose with a compressed air jet to completely empty
the bleed pipe.
Restore the connection when the operation is completed.
4. Fill the system slowly introducing coolant (a mixture of 50% water and paraflu), until fluid comes out
of the bleed valves (A and B) on the radiator, then close the bleed valves. Continue filling until fluid
comes out of the bleed valve (C) on the heater coolant outlet hose, then close this bleed valve. Complete the filling until fluid comes out of the bleed valve (D) on the rigid coolant inlet pipe and close
the bleed valve.
Continue filling until the M A X level on the expansion tank is reached.
5. Start up the engine and let it idle for 2 - 3 mins. Then carry out gradual, periodic accelerations
(aroudn every 30 seconds) until 4000 rpm is reached.
This operation should be carried out until the radiator cooling fan comes on for the first time.
6. Top up, if necessary, until a midway point between the M I N and M A X levels on the expansion tank is
reached.
NOTE
This last operation should be carried out after the engine has been allowed to cool down.
If, during the operations described in point 4, the coolant boils, then the procedure should be
halted to search for the defective component which should be replaced. The procedure
should
then be repeated.
16
Marea-Marea Weekend
ft**
Engine
Removing-refitting radiator
10.
Positioning engine cooling circuit bleed valves (version with air conditioning)
17
Marea-Marea Weekend ft
Engine
TDXOO
Contents
10.
page
REMOVING - R E F I T T I N G
- Removing - refitting power unit
REPLACING
NENTS B E L T
AUXILIARY
COMPO-
and
12
13
15
18
24
25
R E P L A C I N G COOLANT P U M P
26
REMOVING - R E F I T T I N G R A D I A T O R
- Removing - refitting radiator
- Procedure for filling engine cooling
system (version with heating and air
conditioning for engines from 75 and
100 bhp)
27
28
Marea-Marea Weekend ft TO
Engine
100
Removing - refitting
10.
R E M O V I N G - REFITTING
Place the car on ramps, remove the front
wheels and disconnect the battery's negative
pole, then proceed as described below.
Engine
Marea-Marea Weekend ft TO
100
Removing - refitting
10.
1. Using tool 1878077000 remove the button, undo the screws and disengage the
dust shield from its seating.
2. Remove the wheelarch protection illustrated.
3. Disconnect the hose (1) between the turboblower and intercooler and the air o u t let hose (2) from the intercooler to the i n let manifold.
4. Position the hydraulic jack for supporting
the power unit, disconnect the engine/
bodywork mounting, lower the engine
and remove the intercooler complete w i t h
bracket. After completing this operation,
refit the engine mounting.
5. Prepare a container to collect the engine
coolant, then disconnect the coolant inlet
hose from the radiator.
Engine
Removing - refitting
10.
P4F03EX04
P4F03EX06
Engine
Marea-Marea Weekend
ft
100
Removing - refitting
10.
Marea-Marea Weekend
tyro
100
Engine
Removing - refitting
10.
Engine
Marea-Marea Weekend^
TD 100
Removing - refitting
10.
Publication no.
506.763/02
Marea-Marea Weekend
ft
TD100
Engine
Removing - refitting
10.
Engine
Marea-Marea Weekend
ft
100
Removing - refitting
10.
Marea-Marea Weekend ft
T D 100
Engine
Removing - refitting
10.
Engine
Marea-Marea Weekend
ft 100
Removing refitting
10.
1. Remove the bolts indicated from the gearbox bellhousing in order to be able to fit
the tool for removing the engine.
10
Marea-Marea Weekend
ft
Engine
TD 100
Removing - refitting
10.
NOTE
11
Engine
Marea-Marea Weekend
tyro
100
10.
When fitting the engine, take the necessary
nents;
the individual
compo-
When refitting the engine coo/ant pipes, line up the recess on the rubber hose with the lug on
the rigid pipe it connects to. To fill the engine cooling system, refer to the sub-section
"Removing-refitting
radiator" in this Section.
Make sure that the engine unit support points have been secured
Clutch pedal
correctly.
height.
Removing
Place the car on ramps, remove the front right
wheel, disconnect the battery's negative
pole, then proceed as illustrated below.
Rotate the tensioning device in the direction indicated by the arrow, release the
belt tension, then remove the belt.
Check the condition of the belt, and
in particular that there are no cracks,
cuts or surface wear on the material
(when worn it is smooth and shiny),
or dry or hardened parts resulting in
loss of grip. If even only one of the
above defects is present, rep/ace the
belt.
12
Marea-Marea Weekend
ft TO
Engine
100
10.
Refitting
1. Fit the new belt as illustrated in the figure.
Avoid the new belt coming into contact with oil or solvents which could
affect the elasticity of the rubber, resulting in reduced grip.
Return the tensioning device to the position illustrated in the figure. The preloaded
spring of the tensioner w i l l ensure correct
tensioning of the belt, after the engine has
executed a few revolutions.
13
Engine
Marea-Marea Weekend
ft
100
10.
Marea-Marea Weekend
ft
Engine
TD100
10.
R E F I T T I N G AND T E N S I O N I N G T I M I N G
BELT
1. Remove the bolt (1) illustrated, securing
the oil pump; place the pin of tool
1860905000 in the place of the bolt.
2. Fit the timing belt on the
sprocket.
crankshaft
IX-97 - Update
15
Engine
Marea-Marea Weekend
tyro
100
10.
1. Crankshaft sprocket
2. Fixed tensioner
3. Camshaft pulley
4. Fuel injection pump pulley
5. Automatic tensioner
6. Coolant pump
For all pre- and post-modification engines,
the new belt is fitted and the timing is adjusted by lining up the transversal marks (A) present on the back of the timing belt w i t h their
respective references on the pulleys.
NOTE
16
1-96 - U p d a t e
Marea-Marea Weekend ft
n>100
Engine
Replacing timing belt
10.
P4F18FX03
17
Engine
Marea-Marea Weekend
100
10.
18
Marea-Marea Weekend
Engine
ty ioo
TD
10.
2
-C"
P4F19EX05
19
Engine
Marea-Marea Weekend
ft 100
ioT
20
Marea-Marea Weekend
ft
TO
100
Engine
Removing - refitting cylinder head
10.
1. Open the wiring cover illustrated and disconnect the wiring connector f r o m the instrumented injector.
2. Raise the ramps and remove t h e engine
compartment bottom guard.
3. Undo the bolts illustrated and disengage
the exhaust pipe from the anti-vibration
bracket illustrated.
4.5. Remove the t w o reinforcement brackets
securing the turboblower to t h e engine
block.
P4F21EX05
21
Engine
Marea-Marea Weekend
tyro
100
22
Marea-Marea Weekend
wo
Engine
Removing - refitting cylinder head
10.
P4F23EX02
23
Engine
ft
Marea-Marea Weekend
100
10.
Average piston
projection
Position of
reference notch
<>
Cyl.head
gasket
thickness
No. of
notches
up to 0.80 mm
1.6 mm
0.80 - 0.90 mm
1.7 mm
over 0.90 mm
1.8 mm
bag;
assembly;
24
Marea-Marea Weekend
ftrotoo
Engine
10.
R E F I T T I N G AND T I G H T E N I N G
DER HEAD
CYLIN-
25
Engine
10.
REPLACING COOLANT P U M P
2. Using
tools
1860831001
and
1860831000, undo the nut securing the
camshaft pulley.
26
Marea-Marea Weekend
ft
TD100
Engine
Removing - refitting radiator
10.
27
Marea-Marea Weekend
Engine
ft
TO
100
10.
P4FO5EXOI
P R O C E D U R E FOR F I L L I N G T H E E N G I N E C O O L I N G S Y S T E M (version with heating and air conditioning w i t h engines from 75 bhp and 100 bhp)
- Make sure that the cooling system components (engine, heater, radiator, etc.) are fully empty.
- Open the bleed (A) located on the heater outlet hose, open the bleed (B) located on the rigid cooling
pipe on the cylinder head, and open the bleed (C) on the radiator; for versions w i t h air conditioning,
also open the bleed ( D ) on the radiator.
- Disconnect the hose (E) from the point indicated connecting the expansion tank/thermostat, b l o w
compressed air into the hose to empty the pipe fully. A t the end of the operation, reconnect the hose.
- Fill the system by slowly pouring the coolant (50% water and 50% paraflu), until liquid emerges from
the bleed (A) on the radiator outlet hose, then close the latter.
- Continue filling until liquid emerges from the bleed (B) on the rigid pipe, then close the bleed.
Continue filling until liquid emerges from the bleed (C) on the radiator, then close the bleed. For versions w i t h air conditioner, close the bleed (D) at the same time as the bleed ( C ) .
Finish filling until the the MAX level mark on the expansion tank is reached.
Start the engine and run it at idle speed for about 2 or 3 minutes.
Then accelerate periorically until the engine speed is around 3 0 0 0 rpm, and if necessary t o p up the
coolant level in the expansion tank w i t h o u t ever exceeding the M A X mark.
Wait until the fan has come on at least twice, then stop the engine.
Allow the engine to cool and, if necessary, top up until the level is between the M I N and M A X marks
on the expansion tank.
NOTE
28
If the coo/ant boils while the engine is running, stop the procedure to search for and replace the faulty
component which has caused the boiling, then repeat the filling procedure.
Marea-Marea Weekend ft
Engine
100
10.
Location of cooling system bleeds on 75 bhp and 100 bhp engines (version with heating and air conditioning)
9
29
Marea-Marea Weekend
'
. '
ftrozs
'
Engine
Contents
10.
page
*
REMOVING-REFITTING
- Removing - refitting power unit
10
11
13
15
21
22
R E P L A C I N G C O O L A N T PUMP
- Replacing coolant pump
22
R E M O V I N G - REFITTING RADIATOR
- Removing - refitting radiator
- Cooling system filling procedure
23
24
TD 7 5
Engine
Removing - refitting
10.
REMOVING - REFITTING
Position the vehicle on a lift, remove the front
wheels and disconnect the battery negative
terminal. Then proceed as follows.
1. Remove the upper engine protection.
2. Disconnect the battery positive terminal,
unscrew the nut retaining the battery to its
tray and remove from the engine bay.
3. Unscrew the retaining bolts s h o w n and
remove the air intake shown.
4. Raise the lift and remove the lower engine
bay protection.
Use tool 1878077000 to undo the stud,
unscrew the bolts and release the dust
shield from its housing.
Engine
Marea-Marea Weekend ft
75
Removing - refitting
10.
P4F02GX01
Publication no.
506.763/03
Marea-Marea Weekend
ft
|| TD 75
Engine
Removing - refitting
10.
Engine
Marea-Marea Weekend ^ TD 75
Removing - refitting
10.
Marea-Marea
Weekend^
TD 75
Engine
Removing - refitting
10.
Engine
Marea-Marea Weekend ft TD 75
Removing - refitting
10.
lead from
the
Marea-Marea Weekend
ftro 7 5
Engine
Removing - refitting
10.
Engine
Marea-Marea Weekend ft
|| TD 75
Removing - refitting
10.
Marea-Marea Weekend ft
Engine
TD 75
Removing - refitting
10.
1. Remove the timing end engine mount by
unscrewing the central bolt.
2. Remove the gearbox end engine mount by
unscrewing the retaining bolts s h o w n .
3. Lower the hydraulic jack and remove the
power unit from beneath the vehicle.
<>
Clutch pedal
height.
Engine
Marea-Marea Weekend ft TD 75
10.
REMOVING - R E F I T T I N G
COMPONENT B E L T
AUXILIARY
1.
2.
3.
4.
Alternator
Automatic tensioner
Crankshaft pulley
Air conditioner compressor pulley
5. Fixed tensioner
6. Power steering pump pulley
7. Auxiliary component belt
Removing
Position the vehicle on a lift, remove the right
front wheel, disconnect the battery negative
terminal and proceed as follows.
Remove the wheel arch lining by unscrewing the retaining bolts shown and
use tool 1870077000 to undo the stud
shown.
3. Turn the tensioner in the arrowed direction and release belt tension, then remove
belt.
Check belt for cracks, cuts, surface
wear (smooth, shiny patches), dry or
hard patches which could lead to a
loss of grip. Replace the belt if any of
the above defects are found.
10
Marea-Marea Weekend ft
Engine
TD 75
10.
P4F11GX02
Refitting
1. Fit a new belt as shown in the figure.
Before removing the timing belt, remove the auxiliary belt as described
previously.
11
Engine
Marea-Marea Weekend ft
TD 7 5
10.
12
Marea-Marea
Weekend^
Engine
TD 75
10.
P4F15EX02
Timing
is correctly
adjusted
when, with piston no. 1 at TDC,
notch (1) is in the position
shown
in the figure (for engines up to
no. 416449, exact notch
position
may differ by 3" (engine) or %
tooth).
13
Engine
Marea-Marea Weekend ft
TD 7 5
10.
P4F14GX02
Crankshaft gear
Fixed guide pulley
Timing pulley
Injection pump pulley
Automatic tensioner
Coolant pump
NOTE
14
Marea-Marea Weekend ft
TD 75
Engine
Replacing timing belt
10.
15
Engine
Marea-Marea Weekend ft
75
10.
16
Marea-Marea Weekend ft TD 75
Engine
Removing - refitting cylinder head
10.
1.2. Remove both reinforced brackets holding the turbine to the crankcase.
3. Loosen clip (1) and remove pipes. Then
unscrew bolts ( 2 ) , move rigid pipe (3) to
one side and remove heat shield ( 4 ) .
4. Unscrew both retaining screws and remove the bulkhead shown.
5. Loosen the arrowed clips and disconnect
the brake servo vacuum line (1) and
b l o w - b y gas recirculation line ( 2 ) .
P4F17GX03
17
Engine
Marea-Marea Weekend ft
75
10.
1. Use tool 1860967000 to unscrew the fitting on the cylinder head, unscrew bolt
(1), loosen the arrowed clip and remove
rigid pipe (2).
2. Disconnect electrical connections ( 1 ) ,
then loosen clips (2) and disconnect the
engine coolant lines.
3. Disconnect electrical connections indicated for the coolant sensors.
4. Disconnect the accelerator control cable
from the arrowed points and disconnect
the electrical connections (1).
18
Marea-Marea Weekend ft TO
75
Engine
Removing - refitting cylinder head
10.
P4F19GX02
19
Engine
Marea-Marea Weekend
ft
TD 75
10.
20
Marea-Marea Weekend
ft TD 75
Engine
gm
10.
F I T T I N G C Y L I N D E R HEAD G A S K E T
Average piston
protrusion
Reference notch
position
Head
gasket
thickness
up to 0.80 mm
1.6 mm
0.80 to 0.90 mm
1.7 mm
1.8 mm
Number
of notchels
The cylinder head gasket is ASTADUR type. Due to the special material from which it is made, this gasket undergoes polymerisation
during
engine operation and hardens considerably during use. Take the following precautions
to ensure that
cylinder head gasket
polymerisation
takes place:
keep the gasket sealed in its plastic bag;
do not remove from the bag until just before installation;
do not lubricate the gasket or contaminate
with oil. Take care to ensure that the surfaces of the cylinder head and crankcase
are thoroughly
cleaned.
21
Engine
Marea-Marea Weekend
ft
TD 75
10.
R E F I T T I N G C Y L I N D E R HEAD AND
TIGHTENING
1. Position the cylinder head on the
crankcase, then tighten the retaining bolts
to torque, noting that tightening order
during each specified tightening stage is
as shown in figure.
3. Tighten bolts through 270 in three different stages (90+90+90) using angle
wrench 1852154000 fitted to tool
1860942000.
R E P L A C I N G C O O L A N T PUMP
22
Marea-Marea Weekend
ft
Engine
TD 75
10.
REMOVING - R E F I T T I N G RADIATOR
NOTE
Place the vehicle on a lift, disconnect the battery negative terminal and proceed as f o l lows.
1. Raise the lift and remove the lower engine
bay protection.
2. Unscrew the bolts indicated, w h i c h retain
the bottom of the condenser to the engine
cooling radiator.
3. Unscrew the retaining bolts indicated and
remove the air intake.
4. Position a container to collect the coolant,
then loosen clip (1), disconnect the lines
shown and drain the coolant.
Disconnect arrowed electrical connections
for the fan assembly and thermostatic
switch.
23
Engine
Marea-Marea Weekend ft TO 75
10.
1. 2. Unscrew the arrowed bolts, which fasten the top of the condenser to the engine cooling radiator.
3. Unscrew the bolts retaining the radiator t o
the body, release from the lower pins and
remove radiator from the t o p part of the
engine bay.
4. Remove thermostatic switch ( 1 ) , unscrew
the four retaining bolts shown and remove
the fan assembly from the radiator.
COOLING S Y S T E M F I L L I N G P R O C E D U R E
P4F24GX03
24
Marea-Marea Weekend ft
Engine
Contents
10.
page
REMOVING - R E F I T T I N G
- Removing - refitting power unit
12
13
14
timing
belt
]
17
CYLINDER
19
27
R E P L A C I N G COOLANT PUMP
32
R E M O V I N G - R E F I T T I N G RADIATOR
- Removing - refitting radiator
- Cooling system filling procedure (heated
version)
- Cooling system filling procedure (version
with a/c)
33
35
35
TD
Engine
Removing - refitting
10.
R E M O V I N G - R E F I T T I N G P O W E R UNIT
Engine
Marea-Marea Weekend ft
Removing - refitting
10.
light
switch
TO
Engine
Removing - refitting
10.
P4F03FX05
Engine
Marea-Marea Weekend
ftro
Removing - refitting
10.
Engine
TD
Removing - refitting
10.
t
1. Remove the line connecting the
bocharger to the heat exchanger.
SSI
tur-
Engine
Marea-Marea Weekend
ft
Removing - refitting
10.
Marea-Marea Weekend
TD
Engine
Removing - refitting
10.
1. Disconnect the right side turn signal c o n nection and, working from the engine bay,
withdraw the engine wiring and fasten to
the engine.
2. Prise up head ( 1 ) , then disconnect the
gear engagement cable from the gearbox.
3. Unscrew nut retaining the steering link
head, then use tool 1 8 4 7 0 3 8 0 0 0 to disconnect from the pillar.
4. Disconnect the half-axles by undoing the
bolts connecting the constant velocity
joints to the gearbox flange.
5. Unscrew bolt (1) and loosen bolt (2) retaining the suspension strut, then turn the
strut d o w n to release the drive shaft from
the differential.
Engine
Marea-Marea
W e e k e n d
ft
Removing - refitting
10.
1. Disconnect both power steering fluid fittings from the steering box by releasing
from the vibration-proof bracket.
2. Remove the dust shield as shown.
3. Remove the engine oil heat exchanger
from the fastenings as shown, then secure
to power unit.
4. Remove screws retaining the first section
of the exhaust pipe to the manifold and
the vibration-proof
bracket retaining
bolts.
5. Disconnect the first exhaust pipe section
from the catalytic converter.
Engine
Removing - refitting
10.
Engine
Removing - refitting
10.
10
Marea-Marea Weekend
Engine
Removing - refitting
10.
A
NOTE
Use a hydraulic
lift to move the power unit after re/easing it from the support
tool.
Clutch pedal
secured.
height.
11
Engine
Marea-Marea Weekend
ft
TD
10.
REMOVING A U X I L I A R Y BELT
Place the vehicle on a lift, disconnect the battery negative termina, remove the right front
wheel, then proceed as follows.
1. Raise the lift and remove the lower power
unit protection.
2. Use tool 1878077000 to undo the stud,
unscrew bolts and release the dust shield
from its seat.
3. Unscrew retaining bolt shown in order to
position the belt tensioning tool.
4. Use wrench 1860966000 to loosen belt
tension by turning automatic tension nut
(1) anticlockwise until wrench slot (2) is
aligned w i t h hole (3) on the pulley, then
lock the tool in position using a service
bolt.
12
Publication no.
506.763
Engine
TD
10.
1. Loosen tension in mobile pulley by undoing the retaining bolt. Then prise off the
auxiliary drivebelt.
REFITTING
BELT
AUXILIARY
COMPONENT
13
Engine
Replacing timing belt
TD
10.
REMOVING T I M I N G BELT
14
I X - 9 7 - Supersedes previous v e r s i o n
Marea-Marea Weekend
ft TD
Engine
Replacing timing belt
10.
15
Engine
Marea-Marea Weekend
ft
10.
1. Check that reference (1) of the timing pulley is aligned with reference (2) located
on the cam cover.
2. Use a wrench of appropriate size to remove the auxiliary component belt fixed
pulley.
3. Remove the lower timing belt guard.
4. Unscrew the retaining bolts shown in the
figure and remove the reaction rod mount.
\
'
'
f s
^
P4F16FX03
4
=
16
Marea-Marea Weekend ft TD
Engine
Replacing timing belt
10.
R E F I T T I N G AND
BELT TENSION
ADJUSTING TIMING
17
Engine
Marea-Marea Weekend
ft TD
10.
18
Marea-Marea Weekend
ft TD
Engine
Removing - refitting cylinder head
10.
19
Engine
Marea-Marea Weekend
10.
1. Loosen
shown.
clips
and
remove the
sleeve
20
Engine
Removing - refitting cylinder head
10.
21
Engine
Marea-Marea Weekend
ft
10.
22
Marea-Marea Weekend
Engine
Removing - refitting cylinder head
10.
P4F23FX05
23
Engine
Marea-Marea Weekend
ft
10.
24
Marea-Marea Weekend
TD
Engine
Removing - refitting cylinder head
10.
25
Engine
Marea-Marea Weekend ft TO
10.
^^^^^^^^
26
Engine
Removing - refitting cylinder head
10.
Average piston
protrusion
Head
gasket
thickness
up to 0.85 mm
1.6 mm
1.7 mm
1.8 mm
No. of
notches
27
Engine
Marea-Marea Weekend ft
10.
P4F28FX04
28
Marea-Marea Weekend
Engine
TD
10.
29
Engine
Marea-Marea Weekend
ft
10.
P4F30FX02
P4F30FX01
30
P4F30FX03
Marea-Marea Weekend
ft TD
Engine
Removing - refitting cylinder head
10.
31
Engine
Marea-Marea Weekend ft TO
10.
Before removing the coo/ant pump, remove the auxiliary component belt and
the timing belt as desribed
previously.
32
Marea-Marea Weekend
Engine
ft TD
10.
33
Engine
10.
34
Marea-Marea Weekend
ftn>
Engine
10.
COOLING S Y S T E M F I L L I N G P R O C E D U R E ( H E A T E D V E R S I O N )
Procedure not available at the time of going to press. Will be published during a future update.
COOLING S Y S T E M F I L L I N G P R O C E D U R E ( V E R S I O N WITH A / C )
Procedure not available at the time of going to press. Will be published during a future update.
35
Marea-Marea Weekend ft
Engine
12v
Fuel system
10..
page
page
B O S C H M O T R O N I C S.P.I. I N T E G R A T E D
INJECTION/IGNITION SYSTEM
- Introduction
Injector
Fuel pressure regulator
Iritake air temperature sensor
Coolant temperature sensor
Electric fuel pump
Fuel filter
Ignition coil
Lambda sensor
Charcoal filter and fuel vapour cut out
solenoid valve
Speedometer sensor
Inertia switch
Multi-purpose valve and Safety and
ventilation valve
2
3
9
10
10
10
11
11
11
11
12
13
14
15
16
17
18
20
I N J E C T I O N S Y S T E M F U S E S AND R E LAYS
21
EARTH POINT
21
INJECTION/IGNITION S Y S T E M COMPONENTS
22
22
22
24
25
26
27
29
C H E C K S - A D J U S T M E N T S AND REPAIR
OPERATIONS FOR BOSCH MONOMOTRONIC S Y S T E M
-
31
32
33
34
35
36
36
37
38
38
39
39
40
40
42
42
42
43
44
DIAGNOSIS
48
Detecting faults
Memorizing the error and structure of
the errors memory
Classification of the defect
Frequency counter
Signalling a failure
j
Cancelling an error
Fault diagnosis with the Fiat/Lancia Tester
List of errors
Parameters displayed
Active diagnosis
Recovery
Permanent memory
45
46
46
48
48
48
48
48
49
49
49
50
50
50
50
Marea-Marea Weekend ft i *
Engine
Fuel system
10.
B O S C H M0N0M0TR0NIC MA1.7.3 S.P.I. I N T E G R A T E D I N J E C T I O N / I G N I T I O N S Y S T E M
Introduction
The SPI BOSCH MONOMOTRONIC system is the integrated type, where one single electronic control
unit regulates both the injection and the ignition.
It is an SPI system, in other words there is only one single injector which controls the moment and the
duration of the injection of the petrol upstream of the butterfly and the moment that the spark strikes in
the explosion chamber for each cylinder (advance angle).
The MONOMOTRONIC engine control system is based on information concerning the engine load
conditions, the butterfly angle/number of revs (oc/n) i.e. the quantity of petrol required and the a d vances, calculated according to the value of the butterfly opening angle and the engine speed.
This system is equipped with a heated type L A M B D A sensor and, on the basis of the signal coming from
the sensor indicating whether the mixture is rich or lean, it correct the injection time. This produces a
CLOSED LOOP system.
S Y S T E M MANAGEMENT S T R A T E G I E S
Inside the control unit memory there is a management programme (software) which comprises a series
of strategies, each of which manages a precise control function for the system.
By using the information (input), each strategy processes a series of parameters, based on maps of data
memorized in special areas of the control unit and then operates the system actuators (output) w h i c h
are devices which allow the engine to operate.
In addition to controlling the moment of ignition and the temperature/pressure of the air drawn in at the
various engine speeds, in order t o allow the engine to run smoothly when the environmental parameters
and the loads applied vary, the management strategies must control and manage the injection so that the
stoichiometric ratio (air/fuel) is always within the optimum value.
Engine
Marea-Marea Weekend ft i
2 v
Fuel system
10.
DIAGRAM SHOWING OPERATION OF I N J E C T I O N / I G N I T I O N S Y S T E M
P4F02AJ01
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Fuel tank
Electric fuel pump
Fuel filter
Fuel pressure regulator integrated in the
butterfly casing
Injector
Vapour breather safety valve (into atmosphere)
Breather, ventilation and overturn float
valve
Active charcoal filter
Fuel vapour cut out solenoid valve
Air temperature sensor
Butterfly valve opening angle sensor
(potentiometer)
Direct current motor for controlling the
engine idle speed incorporaating the
butterfly valve closure recognition micro-switch
Coolant temperature sensor
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
Engine
Fuel system
10.
M A N A G E M E N T OF THE I N J E C T I O N
Through the acquisition of information concerning the engine speed (n) and the butterfly valve opening
(alfa), the control unit identifies the basic injection time (ti) in a special map.
Given the varying usage conditions of the engine, the injector opening values are optimized by correcting the times on the basis of the following variations: the coolant temperature (1), the air temperature
(2) and the signal sent by the lambda sensor ( 3 ) , always using a synchronous type injection, timed w i t h
the moment of ignition.
By means of special maps selected by interpolation, the control unit tries to always keep the metering
values close to the stoichiometric value (14.7 parts of air and 1 part of petrol).
In order to keep this ratio constant, the electronic control unit uses two different methods for controlling the opening of the injector.
The first method is that of synchronous operation, where the injector is opened each time a high tens i o n i m p u l s e i s s e n t to t h e s p a r k p l u g s (diagram A ) .
The second method involves asynchronous operation, where the electronic control unit controls the
opening of the injector irrespective of the number of high tension impulses sent to the spark plugs
(diagram B).
This takes place because in certain conditions (with basic injection times which are too short, ^ 1.4 milliseconds) the mechanical inertia characteristics (hystersis) of the injector do not allow suitable openings and closures; for this reason a particular strategy w h i c h comes within the mechanical characteristics of the injector must be adopted.
P4F03AJ01
Engine
Marea-Marea
Weekend\^i
2v
Fuel system
1 0 .
The operation of the electric fuel pump (A) is entrusted to the electronic control unit w h i c h , by means of
the relay ( B ) , ensures that it is switched on when the engine is being started up and w h e n it is running
normally.
With the ignition switch in the ON position ( 1 5 / 5 4 ) , the pump relay (B) and the main relay (C) are supplied simultaneously and the latter, on closing, supplies the control unit (terminal 1).
By means of a special circuit, the control unit closes the pump relay (B) to earth via terminal (25) and
the pump relay supplies the fuel pump (A), via a 10 A fuse, pressurizing the fuel system for around 1 to 2
seconds.
When the engine is started up, as the engine rpm signal coming from the rpm and T.D.C. sensor ( D )
reaches terminals 16 and 32 of the control unit, after around 1 second the relay (B) is energized and
consequently the fuel pump cuts out (for safety reasons) even w i t h the ignition switch in the ON position.
If the batterry voltage goes below the pominal value (for example during cold starting), the fuel pump
supply pressure tends to decrease.
In order to overcome this problem, the control unit increases the injection times proportionally in accordance w i t h a correction factor in order to ensure the exact metering of the fuel.
P4F04AJ01
Engine
Fuel system
10.
Starting
With the ignition key in the ON position, the electronic control unit supplies the electric pump for several
moments and acquires the data from the various sensors.
According to the coolant temperature sensor (1) the control unit arranges the opening of the butterfly
valve by means of the direct current motor (2). The starting stage is recognized by the control unit
when the value of the engine speed detected by the sensor (3) is above 30 rpm.
At low engine temperatures, the injection times are increased: the injector remains open for longer, producing a richer mixture.
At high engine temperatures, the injection times are decreased with a consequent approaching of the
stoichiometric ratio.
There is also an anti-flooding function in the control unit, controlled by an internal timer, w h i c h gradually reduces the enrichment of the mixture when the engine does not start up for any reason.
During t h e p o s t - s t a r t i n g stage, the basic injection times, selected by the control unit, are enriched by a
function w h i c h varies in relation to the temperature of the engine coolant w h i c h is cancelled according
to the time.
The multiplication value is not maintained constant for the entire period of engagement, but is gradually
reduced (by a timer in the control unit).
W h i l s t t h e engine i s w a r m i n up a further enrichment of the mixture takes place, dependent on the temperature of the engine coolant, which is not timed and which is added to the post-starting one.
This enrichment decreases gradually in a manner w h i c h is inverserly proportional to the engine temperature.
Engine
Marea-Marea Weekend 0 1 ^
Fuel system
10.
A c c e l e r a t i o n a n d full p o w e r
During acceleration the electronic control unit always provides enrichment (diagram A) of the mixture
strength according to the signals sent by the engine coolant temperature sensor (1), the rpm sensor (2)
and the butterfly valve angular position sensor ( 3 ) .
During the operation of the engine in full power conditions the basic injection times (ti) are increased
(enrichment) by a factor (K) which depends on the butterfly valve (3) oening angle (a).
When the butterfly valve opening angle exceeds 70 (diagram B), the full power enrichment is operational and the basic injection times are increased by about 10%.
When 6000 rpm is exceeded, the system restricts the maximum number of revs through the electronic
control unit (which suppresses the injection impulses cutting off the fuel supply).
P4F06AJ01
Marea-Marea Weekend^i2v
Engine
Fuel system
10.
Deceleration and C U T - O F F
During deceleration it is necessary to make the mixture leaner to reduce fuel consumption and pollutant
emissions (HC + CO).
In order to achieve this objective, there is a function in the control unit k n o w n as the fuel cut off
w h i c h depends on the closure of the contact (1) in the idle control motor, the temperature of the
coolant and the engine speed.
The first t w o conditions necessary for activating the CUT-OFF function are:
- coolant temperature above around 40 C,
- engine speed above around 1800 rpm
If the above mentioned conditions exist during deceleration, when the idle contact (1 - butterfly closed)
closes terminal 3 for the control unit is placed to earth and the control unit, in turn, interrupts the injection
of fuel via terminal 2 1 .
In addition to cutting off the fuel, the control unit activates a special ignition curve w i t h an advance
known as "release".
The cutting off the injection of fuel and the specific advnance curve are opertional until the engine
reaches a speed of around 1500 rpm, below which the injection impulses must be activated in order to
prevent the engine from cutting out.
When the injection is restored, the control unit implements a fuel enrichment strategy in order to reform
the film of petrol on the inlet manifold which improves the operation of the engine.
P4F07AJ01
Engine
Marea-Marea Weekend
ft 12v
Fuel system
10.
LAMBDA
adjustment
The control of the mixture is ensured by the L A M B D A sensor which detects the residual oxygen content
in the exhaust gases.
Since the ceramic material is not activated below 300 C, the L A M B D A sensor is electrically heated by a
resistance (inside it) which always receives a positive supply controlled by the ignition and is protected
by a 10 A fuse.
This heating is necessary during cold starting to preserve the efficiency of the sensor in case the engine
is idling for a long period.
At temperatures above 300 C, the ceramic material becomes a conductor of oxygen ions, consequently
if the quantity of oxygen present at the t w o sides of the sensor is in differing percentages a variation in
voltage is created between the t w o poles.
The L A M B D A sensor causes the voltage variation signal to reach the control unit via terminals (12) and
(13).
The L A M B D A sensor detections concerning the composition of the exhaust gases allow the electronic
control unit to constantly correct the mixture strength in real time (making it leaner/richer) in order to
keep it as close as possible to the stoichiometric strength. The efficiency of the operation of the catalyzer and the restriction of the toxicity of the exhaust gases depends on the exact composition of the mixture.
During the above mentioned stagtes, the variations in the injection time made by the control unit according to the L A M B D A sensor signal are excluded because they w o u l d be in opposition to the driving
conditions set; consequently the engine operates in OPEN LOOP conditions.
With the LAMBDA sensor working properly and the control unit control circuit operating, the
percentages of pollutant gases at the exhaust are automatically regulated by the system without the possibility of external
adjustments.
0,980
- * A. 1,020
MISCELE
MAGRE
t
0,7
0,8
0,9
1,0
1,1
1,2
1,3
COEFFICIENTE X
Marea-Marea Weekend
ffiw
Engine
Fuel system
10.
MANAGEMENT OF THE IGNITION
The ignition system used is the static advance type. The term static comes from the fact that as there is
no high tension distributor (casing-brushes-cap) there are no moving parts.
The coil (B) has 4 high tension sockets which are connected directly to the spark plugs and whose o p eration is managed entirely by the control unit ( A ) .
Inside the control unit (in addition to the various values for controlling the fuel metering) a map (C)
containing an entire series of optimum advance angle values is stored which the engine uses according
to the range in which it is operating: engine load (a) and number of revs ( n ) .
The values memorized are obtained experimentally, with the engine at the test bench, taking into account power, consumption and pollutant emissions.
On the basis of the maps memorized, the values for the number of revs ( D ) , the temperature of the
coolant (E), the engine load (F) and possible detonation (G), the control unit manages to select the correct advance value operating the ignition unit power module.
As the engine operating conditions vary there are 3 different basic maps for the advance angle:
- full load, where it depends on the engine speed and load conditions.
- partial load, where it still depends on the engine speed and load conditions.
- idling where it depends on the engine speed.
The advance angle in full load and partial load conditions may also have additional corrections according to the temperature of the engine and the temperature of the air; whilst the idle advance angle is only
corrected on the basis of the engine temperature (its value is around 7 not constant).
There is an algorhythm in the control unit which calculates the advance according to the number of revs
and battery voltage at which the current starts to f l o w through the ignition coil.
P4F09AJ01
Engine
Marea-Marea Weekend ft
Fuel system
10.
The ignition is composed of t w o primary windings, connected to the control unit (A) via terminals 34
and 35, supplied by the battery voltage and t w o high tension secondary windings whose outlets are
connected directly to the spark plugs for cylinders 1 -4 and 3-2.
The high tension reaches the pair of spark plugs each time the circulation of the current in the primary
winding is interrupted by the power module. The static distribution of the high tension takes advantage
of the different pressure conditions w h i c h exist simultaneously in the pairs of cylinders 1 -4 and 3-2.
In pratice, during the compression stroke for one cylinder, where there is a mixture of air/petrol, the o t h er cylinder is in the exhaust stroke.
If, in these conditions, the voltages required to strike the spark between the spark plug electrodes is examined, it can be seen that during the compression stroke the voltage is very high (10 - 15 kV), whilst
during the exhaust stroke the voltage is extremely low (in the order of 500 V).
The secondary circuit for each coil is therefore closed by t w o sparks; one of around 500 V also known as
the lost spark because it occurs in the cylinder in the exhaust stroke and the other between 1 0 - 1 5 plus
kV in the cylinder in the compression/explosin stroke capable of burning the air/petrol mixture in the actual cylinder.
M A N A G E M E N T O F THE ENGINE I D L E C O N T R O L
The general aim of the strategy is to keep the engine idle speed around the value memorized (engine
warm: 850 50 rpm): the position assumed by the idle speed control actuator depends on the following
engine conditions:
Starting stage
When the ignition is switched on, the actuator assumes a position w h i c h depends on the temperature of
the engine coolant and the battery voltage (open loop position).
W a r m i n g up s t a g e
The number of revs is corrected, above all, according tothe temperature of the engine coolant.
With the engine at operating temperature the management of the idle depends on the signal coming
from the engine rpm sensor; when external loads are applied, the control unit manages the idle sustained.
Deceleration stage
In deceleration conditions outside of idling, the control unit controls the position of the actuator by
means of a special flow rate curve (dash-pot), slowing d o w n the return of the push rod towards it housing, thereby reducing the braking effect of the engine.
MANAGEMENT OF THE FUEL VAPOUR RECIRCULATION
The fuel vapours (pollutant, according to regulations) are sent to an active charcoal filter and from there
to the engine where they are burnt; this takes place by means of a solenoid valve w h i c h is only operated
by the control unit when the engine load conditions allow correct combustion without the operation of
the engine being "disturbed": in effect, the control unit compensates for this quantity of fuel entering by
reducing the supply to the injectors.
CONTROL OF THE DETONATION
This function has the task of detecting the presence of the phenomenon of detonation (engine knock)
by processing the signal coming from the appropriate sensor. The control unit constantly compares the
signals coming from the sensor with a base value w h i c h is, in turn, constantly updated, in order to take
into account the basic noise and the ageing of the engine.
The control unit is therefore capable of detecting the presence of detonation (or the onset of detonation) and reduces the ignition advance until the phenomenon disappears. Later, the advance is gradually restored to the basic value.
10
Marea-Marea Weekend i @ u
Engine
Fuel system
10.
In acceleration conditions, a higher level is used, to take into account the increased noise of the engine
in these circumstances. The detonation control strategy also has a self-adjustment function w h i c h
memorizes the reductions in the advance which are constantly repeated in order to adjust the map t o the
different engine operating conditions.
MANAGEMENT OF THE CLIMATE CONTROL S Y S T E M
When the climate control is switched on the compressor absorbs power from the engine w h i c h , w h e n
idling, tends to cut out. To avoid this problem the control unit adjusts the air flow rate to the new power
requirements, operating the appropriate actuator (this adjustment also takes place in usage conditions
to maintain optimum driveability). Another function of the system is that of momentarily interrupting
the compressor supply in the case of high engine power requirements (strong acceleration).
S E L F - A D J U S T M E N T OF T H E S Y S T E M
The control unit is equipped w i t h a self-adjustment function w h i c h has the task of recognizing the
changes which take place in the engine due to the processes of bedding in over a period of time and the
ageing of both the component and the actual engine.
These changes are memorized in the form of modifications to the basic map and have the aim of adapting the operation of the system to the gradual alterations of the engine and the components compared
with when they are new.
This adjustment function also makes it possible to compensate for the inevitable differences (due to production tolerances) of components w h i c h may have been replaced. This makes it possible to have maximum results in all vehicles without special adjustment and control operations.
The self-adjustment parameters are lost if the control unit is disconnected.
M A N A G E M E N T O F THE ENGINE I M M O B I L I Z E R FUNCTION ( F I A T C O D E )
The system is equipped with an engine immobilizer function. This function is achieved thanks t o the
presence of a special control unit (Fiat CODE), capable of dialogue w i t h the injection/ignition control
unit and an electronic key w h i c h has a special transmitter for sending a recognition code.
Each time the ignition is turned to the OFF position, the Fiat CODE system completely deactivates the
injection/ignition control unit.
By turning the ignition to the ON position the following operations take place in the order given:
1. the engine control unit (whose memory contains a secret code) sends the Fiat CODE control unit a
request to send the secret code to deactivate the immobilizing of the functions;
2. the Fiat CODE control unit responds by only sending the secret code after having, in turn, received
the recognition code sent by the ignition key;
3. the recognition of the secret code allows the deactivating of the immobilizing of the i n j e c t i o n / i g n i tion electronic control unit and its normal operation.
NOTE
of the Fiat CODE system, during the diagnosis and/or any operating
checks
O U T testsusing another injection/ignition
control unit. In effect, in such a
control unit would transfer the (unrecognized)
recognition code to the test
would therefore no longer be fit for use on other vehicles.
MANAGEMENT O F T H E F A U L T D I A G N O S I S
A complete electronic fault diagnosis of the injection/ignition system is obtained by connecting the FIAT LANCIA TESTER to the diagnostic socket.
The system is, however, also equipped with an auto-diagnostic function w h i c h recognizes, memorizes
and signals any failures.
If a failure is detected at the sensors or actuators, the signal reconstruction (recovery) strategies are immediately activated in order to ensure the operation of the engine at an acceptable level w i t h o u t a d versely affecting its performance. It is therefore possible to drive the vehicle to a service centre where
the appropriate repairs can be carried out.
11
Engine
Marea-Marea Weekend
ft 12v
Fuel system
10.
DIAGRAM SHOWING INFORMATION E N T E R I N G / L E A V I N G T H E BOSCH M O N O M O T R O N I C SPI
I N J E C T I O N / I G N I T I O N S Y S T E M CONTROL UNIT AND S E N S O R S / A C T U A T O R S
Components key
1. Electronic control unit
2. Coil
3. Air temperature sensor
4. Speedometer sensor
5. Lambda sensor
6. Engine coolant sensor
7. Butterfly position sensor
8. Rpm and TDC sensor
9. Ignition switch
10. Electric fuel pump
12
11.
12.
13.
14.
15.
16.
17.
18.
19.
Injector
Fiat CODE control unit
Engine idle speed actuator
Rev counter
Fuel vapour cut out solenoid valve
Diagnostic socket
Injection failure warning light
Climate control compressor
Detonation sensor
Marea-Marea Weekend
Engine
ft 12v
Fuel system
10.
DIAGRAM SHOWING AIR INTAKE C I R C U I T
1.
2.
3.
4.
5.
6.
7.
8.
Thermostatic valve
Vacuum ducts
Vacuum pick up
Butterfly casing
The air intake circuit is made up of various components w h i c h direct the air f l o w rate required by the engine in different operating conditions.
The intake of "hot" or "cold" air is dealt w i t h by the deflector (2) w h i c h , according to the position of the
thermostatic vale ( 5 ) , may or may not be reached by the vacuum coming from the inlet manifold.
In particular, where the intake air temperature is above 9C, the thermostatic valve (5) remains closed,
not allowing the vacuum to reach the actuator (2) (position B).
Conversely, when the temperature of the intake air goes below 9C, the thermostatic valve (5) opens,
and the vacuum passing through it reaches the actuator (2) (position A ) .
13
Engine
Marea-Marea Weekend ft 1 *
Fuel system
10.
D I A G R A M SHOWING FUEL SUPPLY CIRCUIT
rtr i HM
-u
ti i
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
The supply of fuel is ensured by means of an electric pump (8) immersed in the tank (7) w h i c h draws in
the fuel and sends it to the filter (2) and then to the injector (10) passing through the pressure regulator
(9) w h i c h has the task of keeping the fuel supply pressure to the injector constant. The excess fuel
flows from the fuel regulator to the tank, not under pressure.
14
Marea-Marea Weekend
ft 12v
Engine
Fuel system
10.
DIAGRAM SHOWING F U E L ANTI-EVAPORATION C I R C U I T
5.
6.
7.
8.
9.
The anti-evaporation system has the task of preventing the fuel vapours, composed of the lightest fractions of hydrocarbons, w h i c h basically form in the tank, from being discharged into the atmosphere.
The system operates, above all at high outside temperatures when the temperature of the fuel increases
and consequently the tendency towards evaporation increases: in this situation the pressure inside the
tank increases.
When the pressure inside the tank reaches around 3 0 - 4 0 mbar, the multi-purpose valve (6) opens and
the fuel vapours reach the charcoal filter (3). The valve (6) also allows an air intake into the tank
through the charcoal filter if it proves necessary following a decrease in the level of the fuel and the c o n sequent vacuum which is formed inside the tank. On the other hand, if there is a great deal of splashing
during driving or the vehicle overturns, the valve (6) closes preventing the fuel from escaping.
When the engine is running, the control unit (8) operates the solenoid valve for the charcoal filter ( 2 ) ,
which allows the intake of vapours by the engine and the consequent scavenging of the charcoal filter.
If as a result of the malfunction of any of the components, the pressure inside the tank increases dangerously, the safety valve (5) located in the cap allows the pressure to be discharged outwards. If necessary, this valve can open in the opposite direction to ventilate the tank and prevent the vacuum from
reaching excessive values.
15
Engine
Marea-Marea Weekend
fti^v
Fuel system
10.
DIAGRAM SHOWING R E C I R C U L A T I O N O F G A S E S COMING FROM T H E ENGINE C R A N K C A S E
(BLOW-BY)
P4F16AJ01
The system controls the emissions, from the engine crankcase, of breather gases made up of air/petrol
mixtures and unburnt gases which come through the piston seals, as well as lubricant oil vapours, recirculating them to the inlet.
The gases come out of the inlet (1) w h i c h contains a spark-out (5) to prevent combustion due to flame
returns from the butterfly casing.
With the accelerator butterfly open, the gases are drawn in upstream of the butterfly through the inlet
(3) on the air duct t o the butterfly casing.
With the accelerator butterfly closed, (engine idling), the pressure downstream of the butterfly, draws in
the gases (in limited quantities) directly through the small pipe (2) and the calibrated port (4).
16
Marea-Marea Weekend lp i
2v
Engine
Fuel system
10.
ENGINE EXHAUST A S S E M B L Y DIAGRAM
P4F17AJ01
The system shown in the diagram allows the metering of the air/petrol mixture to be close to the stoichiometric value.
The control of the mixture strength, w h i c h is the closed loop type, is activated by the Lambda sensor
which measures the oxygen content in the exhaust gases upstream of the catalytic silencer.
The Lambda sensor measurements allow the electronic control unit to constantly correct the quantity of
petrol injected thereby keeping the air/fuel ratio constant.
The control of the harmful exhaust emissions is carried out in this way and is completed by the three way
catalytic converter (catalytic silencer).
The efficient operation of the catalytic silencer and consequently the restriction of the toxicity of the exhaust gases depends on the air/fuel ratio with w h i c h the engine is supplied.
The three way catalytic converter makes it possible to simultaneously restrict the three pollutant gases
present in the exhaust gases: unburnt hydrocarbons (HC), carbon monoxide ( C O ) , nitrous oxides
(NOx).
Two types of chemical reaction take place inside the converter:
- oxidation of the CO and the HC, converted into carbon dioxide ( C 0 2 ) and water ( H 2 0 ) ;
- reduction of the NOx, converted into nitrogen ( N 2 ) .
The following will put the catalytic converter out of use very quickly and make it irreparable:
- the presence of lead in the petrol w h i c h lowers the degree of conversion to levels w h i c h make the
presence of the catalytic converter in the system pointless;
- the presence of unburnt petrol in the converter: in effect, a f l o w of petrol lasting 30 sees in an ambient
of 800 C (temperature inside the silencer) is sufficient to cause the catalyzer to melt and break.
It is absolutely vital for the injection/ignition system to be working perfectly, therefore the spark plug
leads should not be disconnected with the engine running for any reason and in the c a s e of t e s t s the
catalytic converter should be replaced with an equivalent section of pipe.
17
Engine
Fuel system
10.
I N J E C T I O N / I G N I T I O N S Y S T E M WIRING DIAGRAM
CM
OTvocT-C
CO
CM
ui
r ' 8
LB/D.
10
CM
00
-tsa1
HiiiSiiiis
00
o
CM
ST
o
I -1
CM
-tS31
CM
CM
Oj
co
[3CO
CM
o
CM
18
Marea-Marea Weekend ft i
Engine
2 v
Fuel system
10.
Injection/ignition system wiring diagram components key
A.
1.
2.
3.
Rev counter
Fiat CODE control unit
Speedometer signal
Ignition coil
Detonation sensor
Injection/ignition system relay feed
Ignition switch
19
Engine
Marea-Marea Weekend
Fuel system
10.
LOCATION O F I N J E C T I O N / I G N I T I O N S Y S T E M C O M P O N E N T S
Components key
1. Fuel vapour cut out solenoid valve
2. Charcoal filter
3. 10A protective fuse for electric pump and
injection/ignition system
4. Butterfly valve position sensor
5. Electric pump and injection/ignition system relay feeds
6. Injector
7. Air temperature sensor
8. Fuel pressure regulator
9. Engine idle speed actuator
20
19. Earth
Marea-Marea Weekend
Engine
lu v
2
Fuel system
10.
INJECTION SYSTEM
LAYS
F U S E S AND R E -
E A R T H POINT
The earth for the injection/ignition system is
fixed at the right rear of the engine, near the
spark plug for the first cylinder.
21
Engine
Marea-Marea Weekend
fti v
2
Fuel system
10.
INJECTION/IGNITION S Y S T E M COMPONENTS
The injection/ignition system is basically made up of wiring, an electronic control unit (I.E. control u nit)
and the following sensors/actuators:
Sensors
- Speedometer sensor
- Rpm and T.D.C. sensor
- Detonation sensor
- Coolant temperature sensor
- Butterfly valve position sensor
- Intake air temperature sensor
- Lambda sensor
Actuators
- Engine idle speed actuator
- Fuel vapour cut out solenoid valve
- Electric fuel pump
- Injector
- Ignition coil
- Spark plugs
During fault diagnosis, before replacing the control unit, make sure that
the component being examined really
is not working properly because when
a new control unit is supplied the secret code for the Fiat CODE system is
memorized which makes it totally impossible to use it in other vehicles.
22
Marea-Marea Weekend @ t i
Engine
Fuel system
10.
I D E N T I F I C A T I O N OF C O N T R O L UNIT C O N N E C T I O N S (PIN-OUT)
P4F23AJ01
1.
2.
3.
4.
5.
6.
7.
18.
19.
20.
21.
22.
23.
24.
Speedometer sensor
Supply ( + 3 0 )
Engine earth
Injector
Not connected
Climate control system connection
Butterfly valve position sensor
23
Engine
Marea-Marea Weekend \ ^ i
2 v
Fuel system
10.
R P M A N D T D C S E N S O R (0.281.002.102)
The sensor which detects the number of revs
and the TDC is the inductive type, i.e. it operates by varying the magnetic field produced
when the teeth pass in front of a toothed pulley (flywheel) inside the engine crankcase. In
this waythe sensor is fixed to the crankcase
and it is no longer necessary to check and adjust the gap and the angular position.
The teeth which pass in front of the sensor,
alter the gap between the pulley and the sensor; the dispersed flow, w h i c h varies as a
consequence, produces an alternating voltage whose range depends on the number of
revs.
The flywheel is made up of 58 teeth plus a
space equivalent to the two missing teeth.
The reference defined by the space of the t w o
missing teeth makes up the basis for detecting the synchronims point (TDC).
1. Rpm sensor
For a more detailed description of the operating principle, refer to the Fuel System section
for the 1581 16v engine.
2. Toothed pulley
3. Engine flywheel
Removing-refitting
Position the vehicle on a lift, then, working
from the lower part of the vehicle:
- Disconnect the electrical connector;
- undo the bolt fixng the sensor and remove
it from its housing.
Wiring connector
The sensor is connected to the electronic
control unit (pins 16 and 32) by means of
twisted cables w i t h an outer casing to protect
against interference connected to earth.
NOTE
corre-
24
Marea-Marea Weekend
Engine
ffim
Fuel system
10.
C h e c k i n g t h e gap
D E T O N A T I O N S E N S O R (0.261.203.007)
The detonation sensor is located at the rear of
the monobloc, between cylinders 2 and 3.
For a more detailed description of thel operating principle of the detonation sensor, refer to
the fuel system section for the 1998 20v version.
Recovery
Delay of the ignition advance: 8 - 9 depending on the engine speed.
De-activation of the control of the detonation.
If the failure involves the interface circuit w i t h
the sensor, the control unit imposes a dealy in
the ignition advance equal to 10.
Wiring connector
The numbers indicate the
control unit pins.
corresponding
25
Engine
Marea-Marea Weekend ft i
2 v
Fuel system
10.
B U T T E R F L Y C A S I N G (0.438.201.523)
The aluminium butterfly casing or injector holder turret has extremely tiny components and is very c o m pact. Most of the system sensors and actuators are fitted on it:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
P4F26AJ02
26
Engine
Fuel system
10.
Butterfly valve o p e n i n g angle s e n s o r
The angular position signal (a) for the butterfly ( 1 ) , plays a fundamental role in determining the basic
injection times.
This signal is measured on a twin track potentiometer (2) fitted on the butterfly casing (3) by means of a
brush w i t h t w i n combs (4) fixed to the butterfly valve shaft ( 5 ) .
In order to avoid sticking or errors w h e n measuring the angle a, the butterfly shaft is fitted on t w o ball
bearings ( 6 ) .
The potentiometer (2) is already adjusted in relation to the butterfly casing when it is fitted
in the factory and should not be removed for any reason; in the case of a failure, the complete
butterfly casing must be replaced.
P4F27AJ01
The control unit (A - see diagram overleaf), provides terminal 5 of the butterfly valve opening angle sensor (B) with a (constant) reference voltage of around 5 V via terminal 24.
A voltage signal measured at the first track (C) is sent from terminal 2 of the potentiometer to terminal 9 of
the control unit; it is proportional to the positions assumed by the butterfly in the first 24 (0 + 24) of
opening.
27
Engine
Marea-Marea Weekend
fti v
2
Fuel system
10.
11
10
24
18
24
MAXOK')
Therefore, the value of the signal is close to 0 Volt when the butterfly is completely closed, and approximately 5 Volt for an opening of 24 in the rest position.
In the butterfly valve opening range between 0 - 24, there are 10 corresponding reference points in the
control unit map (a), which represent the same number of significant positions assumed by the butterfly valve. In this way, the electronic control unit can recognize small angular variations of around 225'.
This sensitivity allows the control unit to select the basic injection times in the specific map with greater
precision during the most critical engine operating conditions, i.e, during idling and in partial load c o n ditions.
Starting from an 18 opening of the butterfly valve, until it is completely open (about 90), the signal
supplied by terminal 4 of the potentiometer (B) intervenes, i.e. the one for the second track ( D ) .
This signal, sent to terminal 10 of the control unit, relates to the average and full load engine operating
conditions.
The range of the second track is divided in the control unit map a with less resolution compared w i t h
the one for the first track, i.e. in 5 points corresponding to angular variations of around 13 of the butterfly valve. Therefore, for the entire opening of the butterfly valve there are 15 significant points or openings in the control unit which are recognized by the electronic system by means of the t w o potentiometer tracks.
At butterfly valve opening angles of between 18 and 24, the simultaneous presence of voltage signals
at terminals 2 and 4, for the first and second tracks, respectively, should satisfy a given ratio.
The electronic control unit carries out the plausibility test, in the above conditions, to check the exact
synchronization between the signals for the first track (C - minimum/partial load) and those for the second track (D - average load/full load).
Terminal 1 of the potentiometer is placed to earth in the control unit by terminal 1 1 .
28
Marea-Marea Weekend
Engine
Fuel system
10.
Recovery
The emergency/safety function relating to the potentiometer becomes operational w h e n irregularities
do not allow the electronic control unit to detect the actual butterfly valve opening angle (a).
- with faults in track 1 of the potentiometer, a pre-defined safety injection time and ignition advance are
set and an emergency position for the idle adjustment motor is adopted.
- w i t h faults in track 2, only a safety injection time and ignition advance are set.
- w i t h synchronization faults the value for the last piece of information memorized is set, offset between
the t w o tracks.
P4F29AJ01
The restoration of the injection impulses after a CUT-OFF stage and the activation of the engine idle a d justment function are managed by the control unit (A see diagram overleaf) in relation to the engine
speed and the coolant temperature.
In addition, the electronics may also take other parameters into consideration, namely: the engine during
starting or whilst it is warming up, whether the air conditioning is switched on.
The function of controlling the idle is activated by the closing of the contact (C in the diagram overleaf)
which connects terminal 3 for the control unit to earth via terminals 3 and 4 for the motor (B) connector
at point (I).
When necessary, the control unit supplies the adjustment motor ( D ) , via terminals 31 and 29, so that the
idle speed is corrected when the butterfly valve opens or closes.
An electronic switch inside the control unit reverses the polarity at the motor, as appropriate, in order to
achieve the t w o directions of rotation (clockwise and anti-clockwise).
29
Engine
Marea-Marea Weekend
fti v
2
Fuel system
10.
When the motor (D) is supplied it causes the rotation of the reduction unit which comprises a w o r m
screw (E) and a helical wheel (F).
Inside the helical wheel there is a female screw on which the micro-switch (G) casing is tightened/loosend so that it can extend/retract according to the direction of rotation of the actual wheel.
The total travel of the push rod ( H ) , acting on the butterfly valve lever, can produce a maximum opening
of around 18.
P4F30AJ01
Recovery
As a result of an error at the idle contact (short circuit or open circuit) the control unit implements t w o
strategies according to the moment of recognition:
- recognition (open circuit) when the key is in the ON position w i t h no recovery value (ignored);
- recognition (short circuit or open circuit) w i t h key in ON position, the control unit will operate the d i rect current motor placing it in the safety position (butterfly idling).
On account of an error at the motor (motor stuck or defective, operating stage faulty or defective), detected by compaing the operating value withthe effective position in closed idle contact conditions, the
control unit restricts the number of revs w h i c h varies between 1400 and 2000 rpm.
30
Marea-Marea Weekend
ft
Engine
Fuel system
10.
Injector
The injector has the task of atomizing the fuel required to form the fuel mixture. It is made from stainless
so it is resistant to any impurities which may be present in the fuel; it is located centrally on the injector
holder turret above the butterfly valve.
It is made up of an outer casing (1) which contains a w i n d i n g (2) w i t h a ferromagnetic core (3) and a
spring (4) which has the task of keeping the shutter (5) in a closed position in the housing in the casing
(6). The assembly is completed by the following components: the electrical contacts ( 7 ) , the fuel inlet
duct (8) and filter (9) and the fuel outlet duct (10) and filter (11).
The control impulses, coming from the electronic control unit, reache the injector by means of electrical
contacts (7) creating a magnetic field at the core (3) through the winding ( 2 ) , raising the shutter (5)
from its seat, overcoming the opposing spring (4) loading and causing the opening of the injector.
The shutter lift is 0.06 mm (distance x ) ; taking the physical characteristics of the fuel as constant, the
quantity injected depends only on the opening time of the injector (injection time) w h i c h is established
by the electronic control unit according to the engine usage conditions.
The jet of fuel, w h i c h comes out of the injector at a pressure of around 1 bar, is instantly atomized f o r m ing a cone of between 30 and 90 and is injected upstream of the accelerator butterfly. The operation of
the injector is the synchronous type, i.e. one injection for each ignition.
There is a port (12) at the accelerator butterfly which has the function of optimizing the distribution of
the mixture in the inlet manifold whilst the engine is warming up.
31
Engine
Marea-Marea Weekend ft ^
Fuel system
10.
The positive for the injector supply is supplied by the same terminal as the relay which supplies the fuel
pump; the circuit closes to earth in the control unit by means of terminal 2 1 .
P4F32AJ01
This operation prevents the formation of vapour bubbles after the fuel has warmed up due to the heat
given off by the engine thereby always guaranteeing that the engine can be started up w i t h o u t problems.
32
Marea-Marea Weekend
ffii*,
Engine
Fuel system
10.
Intake air temperature sensor
The temperature of the intake air is measured by the temperature sensor (B) on the butterfly casing.
This sensor is made up of a plastic casing on which the reaction element (1), made up of an N.T.C. resistance, which varies in a manner which is inversely proportional to the temperature, is fitted.
If the temperature is between 15 C and 30 C, the resistance is 3.3 - 1.5 kQ whilst if the temperature is
around 80C, the resistance is 0.280 - 0.360 Q.
The electronic control unit (A) supplies the sensor (B) through terminal 13; the circuit closes t o earth
from terminal 2 of the sensor to terminal 27 of the control unit.
With the sensor disconnected, the control unit supplies a voltag of 5 V . With the sensor connected, the
supply voltage varies according to the temperature (sensor internal resistance).
P4F33AJ01
Recovery
With the air temperature sensor short circuited(c.c) or w i t h an open circuit (c.a.), the control unit receives signals w h i c h are not plausible, i.e.:
- sensor c.c: air temperature > 128 C
- sensor c.a.: air temperature < -50 C
In these cases, the control unit implements the Recovery strategy w h i c h takes an air temperature equal
to 20 C as a reference.
33
Engine
Fuel system
10.
C O O L A N T T E M P E R A T U R E S E N S O R (0.280.130.026)
The coolant temperature sensor (B) is made up of an N.T.C. variable resistance; it is fitted on the themostat casing and its operation is similar to the intake air temperature sensor.
The electronic control unit supplies the sensor ( B ) , via terminal 8, the circuit closes to earth from the
sensor terminal to terminal 11 of the control unit.
E
34
Marea-Marea Weekend
Engine
Fuel system
Recovery
- with the coolant temperature sensor disconnected, short circuited (c.c.) or w i t h an open circuit (c.a.),
the signals arriving at the control unit are not plausible, i.e.:
- c.c: coolant temperature > 96.5 C
- c.a.: coolant temperature < 96.5 C
- false contact: when the difference between t w o consecutive temperature readings is large displaying
a downwards trend.
- implausible signal: if the signal from the sensor does not vary with the coolant temperature < +60 C
and
the
engine
running.
If the control unit detects one or more of the above signals it implements the RECOVERY strategy:
- with the air temperature < 24 C, the control unit considers the coolant temperature to be the same as
the air temperature for about 4 minutes, after which it assumes a coolant temperature equal t o 100 C;
- w i t h the air temperature ^ 24 C, the control unit considers the coolant temperature t o be 100
C.
E L E C T R I C F U E L PUMP (0.580.453.514)
The electric fuel pump, immersed in the tank, is the t w o stage turbo pump and is integrated w i t h the fuel
level gauge.
The pump is designed to operate, with a supply of 12 V, at a nominal pressure of 1.1 0.1 bar providing
a capacity of 100 litres/hour.
The advantages of low pressure turbo pumps compared w i t h high pressure pressure pumps (2.5 bar) are
that they are smaller, weigh less and are quieter.
P4F35AJ02
The electric pump contains an impeller (1) which causes t w o sets of vanes to rotate: one internal (2)
w i t h a side profile and one external (3) w i t h a peripheral profile.
With the rotation of the inductor in the rotor ( 4 ) , the fuel is drawn intothe first side profile stage then, it
flows into the second peripheral stage, by mteans of a duct in the inlet disc (5), where it acquires further
speed and is sent, through the supply casing (6) and the anti-reflux valve ( 7 ) , to the injector holder turret.
It is supplied by the control unit via the relay and 10 A fuse.
NOTE
procedure,
for the
35
Engine
Marea-Marea Weekend ^
1 2 v
Fuel system
10.
F U E L F I L T E R (A.450.024.262)
The fuel filter is fitted under the floor panel, on the fuel supply pipe. For the positioning and the removing-refitting procedure, refer to the fuel supply section for the 1581 16V version.
IGNITION C O I L
(0.221.503.407)
The coil, which is the closed magnetic circuit
type, is fixed on the left hand side of the
cylinder head cover.
1.
2.
3.
4.
H.T.
H.T.
H.T.
H.T.
Connector wiring
NOTE
36
corre-
Marea-Marea Weekend
ft 12v
Engine
Fuel system
10.
LAMBDA S E N S O R (0.258.003.805)
The vehicle is equiped w i t h a heated Lambda
sensor with four wires w h i c h measures the
oxygen content of the exhaust gases. For a
full description of the Lambda sensor, refer
tothe Fuel System section forthe 1581 16V
version.
corresponding
If the Lambda
sensor is being replaced, when refitting apply anti-
seizing graphite grease
to the
threaded part (for example
Bosch
VS 14016- FT).
37
Engine
Fuel system
10.
CHARCOAL F I L T E R AND F U E L VAPOUR
C U T OUT S O L E N O I D V A L V E
The charcoal filter and the solenoid valve are
located inthe right wheel arch.
For the description of the charcoal filter, refer
to the Fuel System section for the 1581 16V
version.
For the description of the fuel vapour cut out
solenoid valve and the removing-refitting
procedures for both the filter and the cut out
solenoid valve, refer to the Fuel System section forthe 1998 20V version.
1. Vapour cut out solenoid valve
2. Charcoal filter
P4F38AJ01
Vapour
cut
out
(0.280.142.300)
solenoid
valve
Wiring connector
NOTE
corre-
SPEEDOMETER SENSOR
The speedometer sensor (vehicle speed sensor) is made up of a Hall effect sensor w h i c h
is located at the differential outlet.
The sensor sends the control unit a signal
whose frequency varies according to the
speed of the vehicle.
The control unit uses this information to improve the management of the engine idle adjustment actuator.
38
Marea-Marea Weekend
Engine
ftu v
2
Fuel system
10.
INERTIA SWITCH
In order to increase the degree of safety for
the occupants of the vehicle in the case of an
impact, the vehicle is fitted w i t h an interia
switch located inside the passenger compartment, under the driver's seat.
This sensor reduces the risk of fire (as a result
of fuel escaping from the injection system),
de-activating the electric pump w h i c h supplies the injection circuit.
For the full description and the removing-refitting procedure, refer to the Fuel System
section for the 1581 16V engine.
Outer casing
Push button
Upper side
Engagement side
6. Permanent magnet
7. Housing for permanent magnet
8. Steel ball
C = Common terminal
N.C. Normally closed
N.A. Normally open
Even after an apparently slight impact, if there is a smell of fuel or leaks are noticed from the fuel
system, do not turn the switch back on, but search for the fault and repair it in order to avoid the
risk of fire.
M U L T I - P U R P O S E V A L V E AND S A F E T Y AND V E N T I L A T I O N V A L V E
These valves belong to the anti-evaporation and fuel vapour recirculation system. For a description of
them, refer to the Fuel System section for the 1581 16V version.
39
Engine
Marea-Marea
Weekend@u v
2
Fuel system
10.
C H E C K S , A D J U S T M E N T S AND REPAIR O P E R A T I O N S FOR T H E BOSCH MONOMOTRONIC S Y S TEM
THE FOLLOWING
PRECAUTIONS
SHOULD
CLE EQUIPPED
WITH A MONOMOTRONIC
BE OBSERVED
WHEN WORKING ON A
INJECTION/IGNITION
SYSTEM:
VEHI-
- do not start up the engine with the electrical connector terminals not properly connected
slack at the battery poles;
or
running;
system;
- if the vehicle is going in a drying oven after painting, at temperatures above 80 C, the electronic control unit should be remove first;
- do not attach or disconnect the multiple connector for the electronic control unit with the ignition switch in the ON position;
- always disconnect the battery negative before carrying out electrical welding on the vehicle.
- Remember that this system has a memory which is always supplied (stand-by
memory)
where the self-adjustment values are memorized. The operation of disconnecting the battery
involves the loss of this information which can be obtained once again after a certain distance, therefore this operation should be limited as far as possible.
C H E C K S FOR T H E F U E L S U P P L Y C I R C U I T
1st Test
C h e c k t h e f u e l s u p p l y p r e s s u r e in t h e f o l l o w ing way:
- Disconnect the pipe arriving at the injector
holder turret (coming from the fuel filter)
from the inlet duct;
- Place pressure gauge 189589000, w i t h both
taps A and B in the open position, between
the end of the disconnected pipeand the i n jector holder turret inlet duct;
- Operate the electric pump with the engine
switched off;
P4F40AJ01
This last operation is carried out with the help of the Fiat/Lancia Tester by activating the "fuel pump
test.
The pressure reading on the gauge should stabilize, in those test conditions, at 1.1 0.1 bar.
If the pressure is too low, carry out the next test.
40
Print no.
506.763
Marea-Marea Weekend ^ i * ,
Engine
Fuel system
10.
2nd Test
Checking maximum fuel supply pressure (or electric pump efficiency)
The same connections as for the previous test apply
- close the fuel tap control lever A;
P4F41AJ01
- operate the electric pump w i t h the e n gine switched off, as described on the
previous page: the pressure should
not exceed 5 bar (pump safety valve
setting). If this is not the case, replace
the electric pump because it is defective.
If the pressure reading in the 1 st test (see previous page) was more than 1.1 0.1 bar, it is necessary t o :
- disconnect the fuel return pipe from the pressure regulator and replace it, temporarily, w i t h a pipe g o ing to a suitable container to collect the fuel
- operate the electric pump, w i t h the engine idling, then read the pressure on the gauge:
a) if it reachess 1.1 0.1 bar, the fuel return pipe to the tank should be replaced because it is obstructed
or bent
b) if it exceeds 1.1 0.1 bar, then the regulator is defective and the injector holder turret should be replaced
3rd Test
Injector leakage test
In order to check whether the injector is
dripping, simply apply the connection
for the 1st test (checking regulation
pressure), then operate the electric
pump w i t h the engine switched off.
When the regulation
pressure
is
reached, close the fuel tap control lever
B; in this way the pressure of the fuel
and that in the injector is the same.
Then:
- switch off the electric pump
- observe whether as soon as the pressure stabilizes (i.e. decreases slightly) it remains constant for
around 60 sees
- after having supplied the electric pump w i t h the engine switched off visually inspect whether the i n jector or any connections are dripping.
Replace any injector which is dripping and/or renew the defective seal from where there is a leak.
41
Engine
Fuel system
10.
REMOVING-REFITTING
CABLE
ACCELERATOR
R E M O V I N G - R E F I T T I N G F U E L TANK
For the procedure for removing-refitting the fuel tank, refer to the Fuel System section for the 1581 16V
version.
42
Engine
Fuel system
10.
A D J U S T I N G B U T T E R F L Y V A L V E OPENING
P4F43AJ01
For the smooth operation of the Monomotronic injection system it is vital for the butterfly opening linkage to be correctly adjusted.
Check that with the rod (1) disconnected from the lever, the pulley (3) is in the end of travel position. In
this condition the accelerator cable should be neither too taut nor too slack so that there is no free
play for the a c c e l e r a t o r p e d a l . If this is not the case, act on the accelerator cable spring.
With the rod (1) disconnected from the lever ( 2 ) , let the engine warm up (the radiator cooling fan
should switch on and off).
Make sure that all the vehicle electrical consumers (including the t w o radiator and climate control c o o l ing fans) are switched off and then switch off the engine.
Connect the rod (1) to the lever (2) and check that the clearance (8) between the t w o levers (2 and 4) is
as follows:
- for new engines 1.6 - 1.8 mm
- for engines w h i c h have been run in 0.7 - 0.9 mm
If the above measurement does not correspond to the figure given, loosen the nuts (5 and 6) and tighten/loosen the rod (1) adjuster (7).
When the adjustment is complete make sure that with the accelerator pedal fully depressed, the butterfly
is completely open.
Copyright
by Fiat Auto
43
Engine
Marea-Marea Weekend I
12v
Fuel system
10.
REMOVING-REFITTING
CASING
BUTTERFLY
1. Remove the air duct and the gas recirculation pipes coming from the engine
crankcase ( b l o w - b y ) by acting at the
points shown.
2. Disconnect the fuel pipes, the anti-evaporation pipe and the vacuum duct.
3. Disconnect the electrical connections
4-5 Release the accelerator control rod, undo
the bolts shown and remove the butterfly casing.
44
Marea-Marea Weekend
ft 12v
Engine
Fuel system
10.
45
Engine
Marea-Marea Weekend
fti2v
Fuel system
10.
CHECKING ENGINE IDLE SPEED
If the engine idle speed is not 850 50 rpm and the injection/ignition control unit is the self-adjusting
type, then it is not possible to adjust it and it is necessary to check that the accelerator control linkage is
correctly adjust and the problem should be sought by carrying out a full fault diagnosis using the Fiat/Lancia Tester.
46
Marea-Marea Weekend \ ^ i
Engine
2 v
Fuel system
10.
Checking concentration of CO and HC at the exhaust
The concentration of carbon monoxide (CO) and unburnt hydrocarbons (HC) at the exhaust is measured by inserting a suitably calibrated CO tester at least 30 cm into the end of the exhaust pipe as
shown in the diagram.
If the shape of the end section of the exhaust pipe is such that the sensor cannot be completely inserted,
then a special extension pipe which guarantees the seal in the join area must be added.
1. Check that the idle CO and HC concentrations are those indicated in the table.
2. If the HC value differs from the figures given, whilst the value previously measured upstream of the
catalyzer was okay, then the engine parameters are correct and the cause of the problem should be
sought in the decreased efficiency of the catalyzer.
CO (%)
HC (p.p.m.)
0,4 - 1
600
< 0,35
s$
90
C02 (%)
12
7* 13
P4F47AJ01
47
Engine
Marea-Marea Weekend
ftiav
Fuel system
10.
DIAGNOSIS
The complete diagnosis of the system is possible through an active dialogue w i t h the Fiat/Lancia Tester
If a failure is detected at the sensors, then the electronic control unit replaces the information coming
from the faulty sensor with one memorized (recovery) to allow the operation of the engine. The detection of a fault involves it being memorized permanently and the sensor excluded from the system until
the signal is compatible once again.
The same procedure is applied if the fault involves an actuator. The detecting of the fault and its replacement w i t h recovery data involves the failure being signalled by the special warning light in the instrument panel coming on.
The parameters w h i c h can, in the case of a fault, be managed by the control unit are: idle adjustment actuator, coolant temperature sensor, butterfly valve position sensor, air temperature sensor and detonation sensor. On request, the operator can read the faults in the control unit using the Fiat/Lancia Tester.
Detecting faults
This is carried out duringthe basic function through which the sensor/actuator is managed.
Memorizing the error and structure of the errors memory
The errors are memorized in the control unit in the order in w h i c h they arrive in the RAMs. The location
of each of them is memorized and therg is a frequency counter.
Classification of the defect
If a defect is recognized for the first time and the error state persists for the recognition time, then the defect is memorized as "permanent". If this defect later disappears, then it is memorized as "intermittent".
If it then reappears, it becomes "permanent" once again.
The classification of a defect as "permanent" activates the recovery functions; when the fault disappears
the normal reading or implementation function is restored.
Several types of fault are classified as "important", in terms of the pollution control regulations. The
presence of these faults is signalled to the user by the failure warning light in the dashboard coming o n .
Frequency counter
Each error is allocated a frequency counter w h i c h is used to determine the moement in w h i c h a fault no
longer present was memorized. The first time the fault is detected, the counter is set at 10. If the fault
disappears, it remains memorized as intermittent and the counter is decreased each time the engine is
started up without the fault reappearing. If the counter reaches zero, the fault is automatically cancelled
from the memory.
If after the counter has been decreased, the fault should reappear, the counter is set at 10 (if, however, it
was already greater than 10, then it is not altered).
Signalling a failure
The failure warning light comes on when there is a defect memorized as "present" and "important".
The delay time between detecting the fault and the warning light coming on is 2.5 s.condi; the delay
time between the fault disappearing from the memory and the warning light going out is 0 seconds.
The warning light comes on each time the ignition key is turned to the ON position. If there are no " i m portant" faults already present then the warning light goes out after 4 seconds.
48
Marea-Marea Weekend
Engine
ftu v
2
Fuel system
10.
Cancelling the error
When the frequency counter reaches 0, the fault and the parameters associated with it are cancelled.
The immediate cancellation of the entire errors memory takes place in the following cases:
- through the "cancel errors memory" command sent by the tester;
- by interrupting the electronic control unit supply (disconnecting the battery or the control unit c o n nector).
List of errors
Lambda sensor
C.A.-C.C.
Rpm sensor
Butterfly potentiometer
Detonation sensor
Fiat CODE
49
Engine
Fuel system
10.
Parameters displayed
Engine rpm
Injection time
Intake air temperature
Coolant temperature
Butterfly valve opening angle (angle track 1, angle track 2, normalized angle and ratio between the tracks)
Lambda sensor (state, value of integrator, auto-adjustment factor and sensor voltage signal)
Fiat CODE (state byte)
Active diagnosis
The following tests can be carried out using the Fiat/Lancia Tester:
- Injector
- Fuel vapour cut out solenoid valve
- Rev counter
- Idle speed actuator
- Cancelling errors.
Recovery
In the case of failures at the sensors, the control unit replaces the value transmitted by the sensor w i t h a
so-called Recovery value which, according to the different irregularities, is stored in the control unit
memory or is specially constructed using other available information, in order to allow the vehicle to
reach a service centre.
This value is also transmitted to the Fiat/Lancia Tester, therefore during the fault diagnosis it is a good
idea to bear in mind that if there are problems, the Fiat/Lancia Tester signals the error for the sensor i n volved and the Recovery value appears on the display.
Permanent memory
The control unit is equipped w i t h a permanent type memory, i.e. it keeps a record of the error even if
the cause no longer exists and the ignition is turned to the OFF position; and a volatile type memory
( R A M ) where the information is lost as soon as the cause of the error disappears.
This also makes it possible to identify occasional errors more effectively.
Before ending the fault diagnosis, the contents of the permanent memory should be cancelled using
the Fiat/Lancia Tester in Active diagnosis.
If this is not the case, when the Fiat/Lancia Tester is reconnected, the errors already examined will be
signalled.
50
Disconnecting
the control unit from the system, even for very long periods,
contents of the ((permanent)) memory.
the
Engine
Marea-Marea Weekend ft
Contents
10.
page
page
INTEGRATED INJECTION-IGNITION
SYSTEM
M.
MARELLIWEBER
I.A.W.-1AF
- Introduction
S Y S T E M OPERATING STRATEGIES
Injection-ignition
diagram
system
operating
- Signal management
- Injection management
-;
- Fiat CODE ignition lock function management)
f" .
- Ignition management
- Engine idle control
.
- Fuel vapour recirculation management
- Test management
- Heating/ventilation system management
Diagram showing input and output
between injection-Ignition system
sensors/actuators
A i r intake c i r c u i t m a n a g e m e n t
Fuel supply circuit diagram
Fuel evaporation control circuit diagram
B l o w - b y g a s r e c i r c u l a t i o n diagram
Injection ignition system wiring diagram
.
E n g i n e e x h a u s t a s s e m b l y diagram
Location of injection-ignition system
components
3
4
9
10
13
13
13
14
15
16
17
18
19
20
22
23
24
EARTH POINTS
24
COMPONENTS OF INJECTIONIGNITION S Y S T E M
25
25
25
29
31
32
33
35
36
38
39
40
42
43
44
44
46
47
47
48
49
50
52
54
56
C H E C K S , A D J U S T M E N T S AND R E P A I R S
T O I A W I N J E C T I O N / I G N I T I O N S Y S T E M 57
57
59
62
64
65
66
66
FAULT DIAGNOSIS
67
67
67
68
68
69
69
69
System self-diagnosis
Diagnosis using a Fiat/Lancia Tester
Displayed parameters
List of errors
Active .diagnosis
Recovery
Permanent memory
57
Marea-Marea Weekend ft 1 *
Engine
Fuel system
10.
M . M A R E L L I - W E B E R I.A.W.-1 AF.13 I N T E G R A T E D I N J E C T I O N - I G N I T I O N S Y S T E M
Introduction
The I.A.W.-1 AF system fitted to the 1581 i.e. 16v engine belongs to the category of digital electronic i g nition systems with static advance and timing, integrated w i t h a phased, multipoint, intermittent electronic fuel injection system.
The system may be identified by the following codes according to the version:
- I.A.W. - 1AF.15 for the version w i t h manual gearbox
- I.A.W. - 1AF.25 for the version w i t h automatic transmission
This system therefore adopts a single ECU, single wiring system and a set of sensors c o m m o n to both
systems.
Its function is therefore to inject an exact quantity of fuel into the engine intake duct upstream of the i n take valves in order to obtain the correct mixture concentration.
The I.A.W.-1 AF.13 system ensures efficient operation and optimisation of performance and fuel c o n sumption. Harmful emission levels are reduced through real time response to the various engine operating conditions.
The system may be divided schematically into the following subsystems:
-
Electric/electronic circuit
Air intake circuit
Fuel feed circuit
Emission control devices
The system is able to monitor the following parameters by means of dedicated sensors:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
This data, generally analogue, is converted into digital signals by analogue/digital ( A / D ) converters so
that it may be used by the ECU.
Note that this I.A.W.-IAF injection-ignition sytem does not require adjustment because it is self-adjusting and self-adaptive.
S Y S T E M OPERATING S T R A T E G I E S
The management software resident in the ECU memory comprises a set of strategies. Each of these c o n trols a specific system control function.
Each strategy uses the various inputs listed above to process a set of parameters, using data maps saved
in specific areas of the ECU. The resulting data output is used to control system actuators, in other words
the devices used to operate the engine, namely:
1.
2.
3.
4.
5.
6.
injectors;
ignition coils;
solenoids of various types;
electric fuel pump;
engine idle speed actuator;
control relays.
Engine
Marea-Marea Weekend
ft 16v
Fuel system
10.
I N J E C T I O N - I G N I T I O N S Y S T E M O P E R A T I N G DIAGRAM
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
Injectors
Fuel pressure regulator
Spark plugs
Ignition coils
Timing sensor
Intake air temperature sensor
Rpm and TDC sensor.
Automatic transmission
Coolant temperature sensor
Fuel vapour cut-off solenoid
Active carbon trap filter
FIAT CODE control unit
Lambda probe
Catalytic converter
Electronic injection-ignition control unit
Multifunction valve
Marea-Marea Weekend ft i
6 v
Engine
Fuel system
10.
The management strategies control ignition advance and fuel delivery as efficiently as possible in order
to ensure mixture concentration is always correct as engine load and environmental conditions change.
System management strategies are essentially as follows:
-signal management;
-injection management;
-Fiat CODE ignition lock function management;
-ignition management;
-engine idle control;
-fuel vapour recirculation management;
-test management
-heating/ventilation system management
SIGNAL M A N A G E M E N T
Upon starting, when the rpm sensor detects the first space due to t w o missing teeth on the phonic wheel
(gap), the ECU identifies injection and ignition timing, because these parameters are essential t o ensure
subsequent successful implementation of all strategies.
Timing is identified by interpreting a series of signals from an rpm sensor located on the crankshaft p u l ley and a timing sensor located on the camshaft pulley, intake side.
NOTE
The term "signal framework" denotes the set of signals produced by a sensor on the
crankshaft and a sensor on the camshaft. Because these are located in specific reciprocal
positions, they provide the E C U with a synchronised sequence of signals that the E C U is
able to identify.
P4F03BJ01
1.
2.
3.
4.
Cylinder TDC
Crankshaft angles
Crankshaft phonic wheel signal (rpm sensor)
Camshaft wheel signal (engine timing sensor)
Engine
Marea-Marea
Weekend^ 16v
Fuel system
10.
INJECTION MANAGEMENT
The ignition management strategies are designed to provide the engine w i t h the correct amount of fuel
at the right time in accordance with engine service conditions.
The injection-ignition system uses an indirect measurement system k n o w n as SPEED DENSITY LAMBDA, i.e. angular speed of rotation, intake air density, retro-active concentration check.
In practice this system uses ENGINE SPEED (revs per minute) and AIR DENSITY (pressure and temperature) to measure the amount of air taken in by the engine.
The amount of air taken in by each cylinder upon each engine stroke depends on intake air density and
also on standard displacement and volumetric efficiency.
Air density is taken to be the density of air taken in by the engine and calculated as a function of absolute
pressure and temperature - both measured in the inlet manifold.
Volumetric efficiency is a parameter relating to the cylinder filling coefficient. It is calculated on the basis
of experimental tests carried out on the engine throughout its service range and then memorized in the
ECU.
Once the amount of air taken in has been established, the system must provide sufficient fuel to make up
the required fuel mixture concentration.
The injection trigger pulse or time at which fuel delivery begins is mapped in a control unit and alters according to engine speed and intake manifold pressure. In practice, the the ECU performs calculations in
order to control sequential, phased opening of the four injectors, one per cylinder for the length of time
strictly necessary to form an air-fuel mixture as close as possible to a stoichiometric ratio.
Fuel is injected directly into the manifold close to the intake valves at a differential pressure of some 3
bar.
Speed (no. of revolutions per minute) and air density (pressure and temperature) are used to measure
intake air quantity, which is used in turn to calculate the amount of fuel needed to achieve the required
mixture proportions. The other sensors in the system (coolant temperature, throttle valve position, battery voltage, etc.) allow the ECU to correct the baseline strategy for each specific engine service condition.
This specification is fitted with a catalytic converter to abate polluting emissions. In order to keep this
working efficiently, the air-fuel ratio must be maintained at near stoichiometric levels.
A stoichiometric ratio is achieved by using a hot lambda probe. This probe continually monitors the
amount of oxygen in the exhaust gas and then informs the ECU. This unit in turn uses mapped data to
correct the fuel air mixture on-line if proportions are no longer stoichiometric.
Idle speed, exhaust gas CO level and butterfly valve sensor position are not adjusted on this system.
Control of mixture concentration (retro-active control)
NOTE
follows:
Marea-Marea
Weekend@ti v
Engine
Fuel system
Mixture concentration
^_
(lambda)
as the ratio:
per second
Engine
Marea-Marea
Weekend^ 16v
Fuel system
10.
Starting and post-starting
During start-up, engine timing stage cannot be identified immediately and timed injection for the first
injection to each cylinder cannot therefore be implemented.
An initial simultaneous injection is carried out during the first few engine revolutions (full group) because the considerable fluctuations in rotation speed do not permit injection time to be calculated correctly. Injection becomes phased only subsequently.
The base pulse constant is increased by a given factor throughout the period when the engine is cranked
by the starter motor.
Once start-up has taken place, the factor is gradually reduced to zero within a given time period, w h i c h
is in inverse proportion to engine temperature.
k : enrichment factor
t : time
a : decrease proportional to engine
temperature
ON: engine cranked
OFF: engine running
Operation when cold
Under these conditions, the mixture becomes naturally leaner due to reduced evaporation and heavy f u el condensation on the intake manifold internal walls. The greater viscosity of the lubrication oil also
brings about an increase in the rolling resistance of internal engine components w h i c h also serves to exacerbate matters.
The electronic control unit recognises this condition and corrects injection time on the basis of the
coolant temperature signal.
90 C
Tj(msec)
ON
ON
Tj(msec)
90 C
0C
a
OFF.
OFF
Marea-Marea Weekend ft 1 *
Engine
Fuel system
10.
As a result:
- At very low temperatures the injector stays open longer Tj) graph (b) for a l o w air fuel ratio (rich mixtures);
- As engine temperature increases, injector opening time becomes shorter (tj) graph (a) and the air/fuel
ratio becomes correspondingly higher (lean mixture).
While the engine is warming up, the ECU also governs a step motor w h i c h is responsible for calculating
the amount of air necessary to ensure the engine does not stall.
Rpm is decreased as the temperature rises until the rated level is reached (850 30 Rpm) (880 3 0 rpm
for versions with automatic transmission) when the engine is warm. The ECU governs the step motor to
maintain idle speed constant even if electrical and mechanical loads vary.
Full-load
Under full load conditions, base pulse constant must be increased to obtain maximum engine power
output.
The ECU detects a full load condition as a result of parameters supplied by the throttle position and absolute pressure sensors.
On the basis of this information, the ECU implements the appropriate correction strategy by increasing
base pulse constant.
Over-run
T w o strategies are superimposed during this stage:
1. Transitory negative strategy to reduce the amount of fuel required by the engine (lower emissions).
This stage is recognized by the ECU when the potentiometer signal changes from a higher voltage
level to a lower value.
2. A dash-pot strategy to lessen changes in torque delivery (lower exhaust brake).
This strategy is implemented when the potentiometer signal indicates that the throttle is closed and
rpm is high. The step motor gradually decreases the f l o w of air through the by-pass.
Barometric correction
Atmospheric pressure varies w i t h altitude to bring about changes in volumetric efficiency of sufficient
entity to require a correction t o baseline concentration (injection time).
Injection time is corrected according to changes in altitude and updated automatically by the ECU
whenever the engine is started up and under certain conditions of throttle position and rpm (dynamic
adjustment of barometric correction)
Engine
Marea-Marea Weekend ft i *
Fuel system
10.
Cut-off
The fuel cut-off strategy is activated when the ECU recognises that the throttle is in closed position
(throttle potentiometer signal) and engine speed exceeds 1350 rpm (1750 rpm for version with automatic transmission). The ECU activates cut-off only when engine temperature exceeds 0 C.
The fuel supply is restored when the throttle is no longer closed or the engine speed is less than 1270
rpm (1650 rpm for version with automatic transmission).
A. entering cut-off
B. leaving cut-off
Acceleration
During this stage, the ECU increases the amount of fuel required by the engine (to achieve maximum
torque) on the basis of signals from the following sensors:
- throttle potentiometer;
- absolute pressure sensor;
- rpm and TDC sensor.
The base pulse constant is multiplied by a factor according to coolant temperature and accelerator throttle opening speed.
If an abrupt change in injection time is calculated w h e n the injector is already closed, the ECU reopens
the injector (extra pulse), in order to make the concentration up to the required level as quickly as possible. Subsequent injections are automatically increased as described previously.
Marea-Marea Weekend ft i
6 v
Engine
Fuel system
10.
Protection against excess rpm
When engine rpm exceeds an upper threshold of 6700 rpm imposed by the manufacturer for longer than
10 seconds or a critical upper limit of 6900 rpm for any time at all, the engine conditions become critical.
When the ECU recognises that this threshold rpm level has been exceeded, it reduces injector control
time.
When rpm drops to non-critical levels, control is restored.
Electric fuel pump drive
The fuel pump is governed by the ECU through a dual relay.
The pump stops when:
- engine rpm drops below 50 rpm;
- after a certain time (about 5 seconds) w i t h the key in M A R position without
starting taking place (timed enablement).
- f the inertia switch is activated.
Injector control
Injectors are controlled in sequential, phased manner. During start-up, however, all injectors are initially
all controlled in parallel (full-group).
Injector control timing varies according to engine speed and intake air pressure in order to improve
cylinder filling because this makes for better fuel economy, good handling and lower emission levels.
NOTE
When the FIA T CODE anti-theft system is present, D O N O T test the vehicle using another engine control unit. In this case, the FIA T CODE control unit would transfer the recognition
code
(unknown) to the test control unit, which would thus be rendered completely unserviceable
on
other vehicles.
Engine
Marea-Marea Weekend I t t i
i*
Fuel system
10.
IGNITION MANAGEMENT
The ignition circuit is static inductive discharge type, i.e. a high tension distributor with power modules
located inside the injection-ignition control unit.
The system comprises t w o high tension twin outlet coils combined in a single container and connected
directly to the spark plugs.
The primary winding of each coil is connected to the power relay (i.e. supplied by battery voltage) and
pins of the ECU for connection to earth.
Once the start-up stage is over, the injection-ignition ECU implements a base pulse constant taken from
a specific map in accordance with the following input parameters:
- engine rotating speed (rpm),
- absolute pressure reading (mmhg) obtained in intake manifold.
This advance setting is corrected according to temperature.
The advance angle is also subject to correction under the following conditions:
- during start-up;
- during transitory stages of acceleration and over-run.
- during cut-off.
- when rpm is excessive.
- when required by the automatic transmission ECU (gear changes).
For the ignition system to work efficiently, the ECU must recognise signal configuration ( 3 ) .
The gap or change in signal generated by the lack of t w o teeth on the phonic wheel, more specifically
between the 58th and 1st tooth (known also as the synchronism tooth) w h i c h occurs each time the
crankshaft pulley turns is a reference signal w h i c h allows the ECU recognition 114 in advance of TDC
of piston pair 1 -4 in correspondence to falling front of 20th tooth.
Once the ECU (see f o l l o w i n g page) has received the correct T.D.C. signal configuration, it establishes
the point at which conduction (supply) to primary circuits of coils (6) begins and makes internal power
module (5) conductive.
10
Marea-Marea Weekend
ft
Engine
Fuel system
10.
The rising side of signal (graph B in figure on previous page) therefore represents a moment w i t h i n
w h i c h alternative primary winding conduction could take place. This point can be established only by
the control unit power module. The conduction time the H.T. coil needs in order to store sufficient energy is also defined by DWELL management strategies. This depends on the time taken by the current to
reach about 6A in the coil primary winding and also on the calculation algorithm run by the microprocessor which uses factors saved in a special memory, obviously based on engine rpm
With reference to the figure on the previous page, the falling side of the signal, (B) conduction end point (or
current drop to zero), is a categorical order to cut-off the current flowing in the primary winding and represents the ignition advance point (a) processed by the computer (advance - (a) - varies according to rpm).
The control unit (ECU) then controls spark advance in the different cylinders in relation t o t o p dead centre and conduction time necessary for the coil to store energy by controlling the two power stages (corresponding to ECU pins 55 and 37). These in turn permit current to f l o w through primary w i n d i n g s of
coils (6) for long enough to ensure the specified 6A current rating.
J-LTLB
55
7Ln_rLr!i_n
ru
37
+ 30
4J-LTU1_
(inside
control
6. Ignition coils.
7. Spark plugs
NOTE
At the moment when the ECU de-activates one of the t w o power stages, current f l o w is cut off. This
generates a voltage by induction (up to 30kV without loads) in the secondary w i n d i n g .
11
Engine
Marea-Marea Weekend ft 1 *
Fuel system
10.
When the voltage required for triggering an arc between the spark plug electrodes is examined, we note
that voltage is high in the cylinder undergoing compression (greater than 10kV) while it is reduced
(about 5kV) in the cylinder undergoing exhaust.
High tension distribution is static, i.e. takes place without a rotary brush and cap. This system effectively
does away with a distributor. This gives the system a considerable advantage because it is known that
brush and cap insulation properties play an important role. Any loss of insulation to earth may impair i g nition: particularly during winter or periods of heavy rain.
The spark plugs of cylinders 1-4 and 2-3 are connected directly (in pairs) by means of high tension
leads to coil secondary winding terminals and may be considered to be connected in series, because the
cylinder head joins them all. This solution is also known as a "lost spark" system because the energy
built up by the coil discharges almost exclusively on the electrodes of the spark plug located in the cylinder under compression to allow mixture ignition. The other spark is obviously unused because the cylinder does not contain mixture for ignition - solely exhaust gas ready for venting.
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6. Ignition coils
7. Dual relay
3. Battery
8. Injection-ignition ECU
4. Ignition switch
5. Spark plugs
12
Marea-Marea
Weekendftiev
Engine
Fuel system
10.
ENGINE I D L E C O N T R O L
The main aim of this strategy is to maintain engine speed at around the mapped setting (warm engine:
850 rpm): the position assumed by the actuator is dependent on engine conditions/rpm and vehicle
speed.
Start-up stage
When the key is inserted, the actuator takes up a position dependent on engine temperature and battery
voltage (open-loop position).
Warming-up stage
The rpm is mainly corrected on the basis of coolant temperature.
With the engine warm, idle management is dependent upon the signal from the rpm sensor. The ECU i n troduces sustained idle when external loads are activated.
Over-run
When the accelerator is released when the car is not idling, the ECU governs the actuator (step motor)
by means of special delivery curve (dash-pot curve), i.e. delays the return of the plunger to its housing to
bring about a reduction in engine braking effect.
F U E L VAPOUR R E C I R C U L A T I O N M A N A G E M E N T
The strategy controls vapour cut-off solenoid position as follows:
- during start-up, the solenoid remains closed to prevent fuel vapours enriching the mixture excessively.
This condition persists until coolant temperature reaches 65 C;
- with the engine warm, the ECU sends the solenoid a square wave signal (duty-cycle control) w h i c h
modulates opening.
In this way, the ECU controls the amount of fuel vapour directed to the intake, thus avoiding substantial changes in mixture concentration.
Under the following operation conditions:
- throttle valve closed
- speed less than 1500 rpm
- intake manifold pressure less than a lower threshold calculated by the ECU in accordance w i t h rpm
level
solenoid control is inhibited with the same closure position maintained. This makes engine operation
more efficient.
T E S T MANAGEMENT
Full injection-ignition system electronic testing can be achieved by connecting a F I A T / L A N C I A
TESTER to the test socket.
The system is also equipped with a self-diagnostic function w h i c h recognises, memorises and indicates
any faults.
If sensors or actuators are found to be faulty, signal reconstruction strategies are immediately activated
(recovery) so that the engine is able to operate at an acceptable level without affecting f u n c t i o n . The car
can then be driven to a service point for the necessary repairs.
13
Marea-Marea
Engine
Weekend^ lev
Fuel system
10.
HEATING/VENTILATION S Y S T E M MANAGEMENT
Rpm decreases when the air conditioner is turned on because the system compressor takes up power.
This involves a drop in rpm, w h i c h is particularly evident during idling.
To overcome this drawback, w h e n the ECU is informed of air conditioner activation (pin 10) before the
activation command is received (pin 26), it increases air f l o w by adjusting the engine idle speed actuator.
When (during driving conditions) a power requirement is identified (throttle position higher than a given threshold) or engine speed is lower than a certain level, the ECU inhibits air conditioner operation to
improve vehicle performance.
3.0 85
86 87 87
+ 15
0
" f f f }
1. Battery
6. Compressor
3. Ignition switch
4. Junction unit
9. Defrosting sensor
5. Compressor electromagnetic
supply relay
14
coupling
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
DIAGRAM SHOWING I N P U T / O U T P U T B E T W E E N I N J E C T I O N - I G N I T I O N S Y S T E M E C U AND
SENSORS/ACTUATORS
Key to components
1. Electronic control unit
2. Speedometer sensor
3. Speedometer/mileometer
4. Rev counter
5. Absolute pressure sensor
6. Rpm and TDC sensor
7. Ignition switch
8. Dual relay
9. Electric fuel pump
10. Throttle position sensor
1 1 . Air temperature sensor
12. Engine idle speed actuator
13. Injectors
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
15
Engine
Marea-Marea Weekend ft i *
Fuel system
10.
AIR I N T A K E C I R C U I T M A N A G E M E N T
P4F16BJ01
The air intake circuit consists of various components w h i c h ensure the correct amount of air is carried to
the engine under different operating conditions.
1.
2.
3.
4.
5.
6.
16
Inlet manifold
Evaporation control system socket
Socket for Absolute pressure sensor
Socket for servo brake
Socket for fuel pressure regulator
Air temperature sensor
7.
8.
9.
10.
11.
12.
13.
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
FUEL SUPPLY CIRCUIT D I A G R A M
3. Fuel filter
6. Vent pipe
Fuel is supplied by means of a pump submerged in the fuel tank, which draws up fuel and directs it to
the filter and injectors.
Fuel feed pressure to the injections is maintained constant and proportional to the pressure difference
set up in the inlet manifold by the Pressure regulator, w h i c h adjusts the fuel f l o w to maintain a constant
pressure gap to the injectors.
Excess fuel is allowed to f l o w back into the tank, unpressurised, from the pressure regulator.
17
Engine
Marea-Marea
Weekend^ 16v
Fuel system
10.
F U E L EVAPORATION CONTROL C I R C U I T DIAGRAM
5. Tank
18
Marea-Marea Weekend
Engine
ftiev
Fuel system
10
BLOW-BY GAS RECIRCULATION D I A G R A M
valve case
5. Calibrated hole
6. Butterfly valve case
P4F19BJ01
The system controls emission, from the engine block, of vent gases made up of air-fuel mixtures, burnt
gases which leak through piston rings and lubricant oil vapours by recirculating them to the intake.
With the accelerator throttle open, vent gases from the engine block reach the sleeve connecting the air
cleaner-butterfly valve case (4) through pipe ( 2 ) . This contains a flame trap (1) w h i c h prevents c o m bustion caused by flame flashing back from the butterfly valve case ( 6 ) .
With the throttle closed (engine idling), the vacuum in the intake manifold takes up gas (in limited
quantities) directly through the pipe (3) and calibrated hole (6).
19
Engine
Marea-Marea Weekend @ u .
6
Fuel system
10.
I N J E C T I O N - I G N I T I O N S Y S T E M E L E C T R O N I C C I R C U I T DIAGRAM
P4F20BJ01
20
Engine
Fuel system
10.
Key to components in injection-ignition system wiring diagram
1. General 40A fuse for services activated by ignition key
2. General 30A system fuse for injection-ignition system
3. Ignition switch
4. 25A fuse for components supplied by dual relay (electric pump, lambda probe, injectors and fuel
vapour cut-off solenoid)
5. 5A fuse for injection-ignition system
6. Dual relay
7. Lambda probe
8. Inertia switch
9. Electric fuel pump
10. Rev counter
1 1 . Ignition coils
12. Spark plugs
13. Earth on body shell
14. Fuel vapour cut-off solenoid
15. Earth on engine
16. Injectors
17. System warning light
18. Automatic transmission
19. FIAT CODE control unit
20. Speedometer signal
2 1 . Air conditioner compressor
22. Three stage pressure switch
23. Engine idle speed actuator
24. Timing sensor
25. Throttle valve position sensor
26. Absolute pressure sensor
27. Coolant temperature sensor
28. Air temperature sensor
29. Rpm and TDC sensor
30. Diagnostic socket
21
Engine
Fuel system
10.
ENGINE EXHAUST A S S E M B L Y DIAGRAM
P4F22BJ01
In the I.A.W. system, mixture concentration control occurs in a closed loop. It is activated by a sensor
and lambda probe w h i c h records exhaust gas oxygen content upstream of the catalytic converter.
The lambda probe measurements allow the electronic control unit to correct mixture concentration continually to maintain the air/fuel ratio constant.
This control of harmful exhaust emissions is complemented by the action of a trivalent catalytic converter
Effective catalytic converter operation and hence exhaust gas toxicity is dependent on the air/fuel ratio
supplied to the engine.
The trivalent catalytic converter allows simultaneous removal of the three pollutant gases present in the
exhaust gas: uncombusted hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx).
Two types of chemical reaction take place inside the catalytic converter:
- oxidation of CO and HC to form carbon dioxide (CO ) and water (H 0 )
- reduction of NOx to form nitrogen ( N ) .
2
The catalytic converter may be put quickly and irreparably out of service by the following causes:
- presence of lead in petrol, which w o u l d lower conversion levels to a point where the presence of the
converter in the system w o u l d be pointless;
- presence of uncombusted fluid in the catalytic converter. A 30s fuel flow at a temperature of 800 C
(temperature inside the catalytic converter) is sufficient to bring about catalytic converter melt-down.
It is absolutely necessary for the ignition system to work efficiently. The spark plug leads should never be disconnected with the engine running and the catalytic converter should therefore be replaced with an equivalent section of pipe during tests.
22
Marea-Marea
Engine
Weekend^ 16v
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10.
LOCATION O F C O M P O N E N T S I N J E C T I O N - I G N I T I O N S Y S T E M
Key to components
8
9
10
11
12
13 Earth on engine
14 Vehicle speed sensor
15 General 30A system fuse
16 Wire shielding earth
18 Injection-ignition ECU
19 Coolant temperature sensor
20 Ignitian coils
21 Joint between injection lead and front
lead
22 Fuel pressure regulator
23 Injector lead coupling
24 Injectors
25 Timing sensor
26 Rpm and TDC sensor
27 Spark plugs
23
Engine
Fuel system
I N J E C T I O N - IGNITION S Y S T E M F U S E S
AND R E L A Y S
EARTH POINTS
To increase electromagnetic compatibility
and functional reliability, the earth points
have been located with particular care as
shown in the following diagram:
1. Earth on engine near exhaust valve cover.
2. Earth on control unit bracket for lambda
probe lead shield and rpm and TDC sensor.
P4F24BJ04
24
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
COMPONENTS OF I N J E C T I O N - I G N I T I O N S Y S T E M
The injection-ignition system consists mainly of wiring, an electronic control unit (ECU) and the following sensors and actuators:
Sensors
Actuators
-Timing sensor
-Injectors
-Ignition coils
-Dual relay
INJECTION-IGNITION S Y S T E M WIRING
The various system components are connected by a single wiring system fitted with connectors of various types. These are grouped in special ducts fitted to the engine (prewiring).
INJECTION-IGNITION E C U
The injection-ignition system ECU adopted is specific to this version and connected t o the electrical
system by a multiple 55 pin connector
It is a digital microprocessor unit with high computing capacity and is accurate, reliable, versatile. It
consumes little energy and is maintenance free.
The ECU's task is to process signals from the various sensors through the application of software algorithms and control the actuators (particularly the injectors, ignition coils and idle actuator) in order to
achieve optimal engine performance.
Essential features of the electronic control unit are as follows:
-
25
Engine
Marea-Marea Weekend @ u .
6
Fuel system
10.
b. Microprocessor
This electronic component is responsible for computing and managing acquired data. It is thus a true
computer and its main tasks include: consulting memories, comparing data input with sample data,
managing actuator control circuits.
c. ROM memory (Read Only Memory)
This contains all programs necessary for microprocessor operation. Because the unit is programmed
permanently prior to installation, data may be read but not modified.
The R O M memory is conservative; commands are saved even when the battery leads are disconnected.
d. RAM memory (Random Access Memory)
The R A M memory is a transitional memory where data can be read and saved.
This memory is actually used to save input data temporarily so that they are available for processing
and also to memorize signals for coding operating anomalies that may occur within sensors, actuators
or ECU functions.
The R A M memory is divided into sections: the first volatile part, for data memorization, is enabled
with ignition key in MARCIA position and deleted in STOP position.
The second non-volatile part, ( R A M STAND-BY) saves engine parameters and adapts them in time. In
other words, the ECU uses the Lambda probe signal to modify and store an injection time correction
factor that influences mixture concentration.
Self-adaptive corrections to the engine speed actuator require a continual supply from the battery in
order to be maintained (memory in S T A N D - B Y ) .
If the battery, dual relay or terminals are disconnected, the parameters are zeroed. Normal vehicle use
resets the adaptation process and new parameters are memorized.
e. E E P R O M memory (Electrical Erasable Programmable Read Only Memory)
This is a special type of memory that can be deleted electrically and reprogrammed again and again.
One of its functions is to receive from the R A M STAND-BY recordings of anomalies that have arisen
during engine operation and send these through the diagnostic socket to a Fiat-Lancia Tester. A Fiat-Lancia Tester must be used in active diagnosis in order to delete the anomalies.
The presence of a non volatile memory allows data relating to system anomalies to be saved even if
the battery is disconnected and anomalies to be indicated even once they have been absent for 5 c o n secutive start-ups (one start-up + 2 0 ' engine operation).
f. Drivers (final power stages for actuator control)
Drivers (final power stages for actuator control)These circuits are driven directly by the microprocessor and the relevant integrated circuit. They are used to supply actuators such as: injectors, step motor
for idle control, carbon filter flushing valve, fuel pump relay, ignition coil main relay.
26
Marea-Marea
Engine
Weekend^
<mi6v
Fuel system
10.
Removing-refitting
in or-
Before replacing an ECU as a result of testing, ensure it is really faulty because when a new
ECU is activated, the secret Fiat CODE system code is memorised and this makes the unit
completely unusable on other vehicles.
Voltages may be present on unconnected pins. These pins must not be connected
the resulting short-circuits could damage the control unit.
Insert and remove the multiple connector with the ignition key out.
otherwise
27
28
Marea-Marea
Weekend^ lev
Engine
Fuel system
10.
RPM AND T D C S E N S O R
(Jaeger CVM01)
RPM and crankshaft angular position reference (TDC indicator) sensor (1) is secured t o
the engine block facing phonic wheel (7) located on the crankshaft pulley.
Principle of operation
The sensor consists of a tubular case containing a permanent magnet (3) and an electrical
coil (2).The magnetic flux set up by magnet
(3) undergoes fluctuations due to changes in
the gap as the teeth pass in front of the p h o n ic wheel.
These magnetic flux changes set up an electromotive force in coil ( 2 ) . A n alternating
positive (teeth facing sensor) and negative
(gap facing sensor) voltage is set up at coil
terminals. The sensor output voltage peak
value depends on the gap beteween sensor
and phonic wheel teeth if all other factors are
equal.
T w o of the sixty teeth on the phonic wheel are
removed to create a reference gap. Gear pitch
therefore corresponds to an angle of 6 (360
divided by 60 teeth). The synchronism point is
recognised at the end of the first tooth f o l l o w ing the space left by the t w o missing teeth.
When this gap passes beneath the sensor, engine piston pair 1 -4 is located at 114 before
TDC.
1. Sensor
2. W i n d i n g
3. Permanent magnet
4. Sensor connector
5. Output signal
6. Signal corresonding
to the t w o missing
teeth
7. Crankshaft
pulley
w i t h phonic wheel
29
Engine
Marea-Marea
Weekend^ 16v
Fuel system
10.
Wiring connector
The sensor is connected to the ECU (pin 30
and 49) by means of twisted wires covered
by a shielded, interference-proof sheath c o n nected to earth.
NOTE The numbers
corresponding
NOTE
Whenever repairs to the rpm and TDC sensor mount are necessary (e.g. gap not as specified,
sensor not aligned etc.), the sensor must be positioned and aligned with the mount as described
in the engine service manual (publication no.
504.589/20).
Checking resistance
Sensor resistance may be measured by disconnecting the connector and connecting an
ohmmeter to the sensor terminals.
P4F30BJ03
30
Marea-Marea
Weekend^ 16v
Engine
Fuel system
10.
T I M I N G S E N S O R (Jaeger S F A 200)
This system adopts a phased, sequential injection system. In other words, fuel is injected into each cylinder in sequence during the
intake phase.
To achieve this, the ECU uses a timing signal
together w i t h the rpm and T D C signal to determine the point of injection.
The signal sent to the control unit is generated by a Hall sensor (2) fitted on the intake
camshaft pulley.
Principle of operation
NOTE Sensor angular position
adjusted in any way.
may not be
1. Deflector
2. Magnetic material
3. Gap
Removing-refitting
To gain access to the timing sensor, remove
the intake side camshaft pulley (3) (refer to
engine service manual, publication no.
504.589/20).
Disconnect electrical connection of sensor.
Wiring connector
The numbers in boxes indicate the corresponding control unit pins
31
Engine
Marea-Marea Weekend
@iiev
Fuel system
10.
B U T T E R F L Y VALVE C A S E (54 C F A 26)
The butterfly valve case is responsible for metering the quantity of air supplied to the engine (and thus
controlling engine power output) according to accelerator position determined by the driver.
The butterfly valve case is fastened to the intake manifold by four screws. The throttle is opened by a
linkage w i t h configuration designed to open the throttle by a small amount when the pedal is hardly
pressed (provided pedal travel remains the same) and open it by large amounts when the pedal is
pressed d o w n further.
With the pedal fully released (engine in over-run or idling), the additional air required is supplied by an
engine idle adjustment solenoid. Under these conditions, the throttle opening lever comes into contact
with an anti-bind screw, which prevents the throttle becoming locked in closed position.
To prevent the build-up of ice around the throttle and the hole leading to the PCV valve, the butterfly
valve case is heated by directing a small amount of coolant from the engine thermostat around a chamber inside the case.
The oil vapour recirculation system PCV valve and throttle position sensor are also fitted on the butterfly
valve case.
P4F32BJ01
1. Throttle linkage
2. Butterfly valve adjustment and antibind screw (do not touch)
3. Attachment for engine coolant delivery hose
4. Engine idle speed actuator (fitted on intake manifold)
5. Attachment for engine coolant return hose
6. Throttle position sensor
7. Throttle valve
8. Attachment for engine block vapour recirculation and recovery line
32
Marea-Marea
Weekend^ 16v
Engine
Fuel system
10.
THROTTLE VALVE
POSITION S E N S O R (M. Marelli P F - 1 C )
During operation, the ECU supplies the potentiometer at a voltage of 5 Volt. The parameter measured is throttle position from
idle to full opening for injection control management.
33
Engine
Marea-Marea
Weekend^ 16v
Fuel system
10.
Wiring connector
A B C
J_
53 16 23
Checking resistance
Sensor resistance may be measured by connecting an ohmmeter across sensor pins A
and C
Resistance: 0 -1200 ohm 20% at 23 C
Recovery
A value calculated on the basis of intake
manifold pressure is adopted. If the pressure
sensor fails at the same time, a throttle angle
of about 50 is assumed as a fixed value.
The strategy of gradual decrease of rpm at
idle speed (dashpot) is blocked.
Idle self-adaptation is blocked.
Mixture concentration
blocked.
self-adaptation
is
Removing-refitting
Unscrew both retaining bolts and remove the
sensor.
NOTE
NOTE
34
The potentiometer
is fitted to the
butterfly valve case by two tabs containing two uns/otted holes. No angular position adjustment is therefore necessary because the ECU employs self-adaptive algorithms to detect whether the throttle is fully
closed or fully open.
Fit new potentiometer retaining bolts whenever bolt removal is required because the thread is
covered by a light coat of loctyte and this ensures a seal once only.
Marea-Marea
Weekend^ 16v
Engine
Fuel system
10.
INTAKE AIR T E M P E R A T U R E S E N SOR (Jaeger ATS-04)
The sensor is fitted to the intake duct.
It consists of a brass case from w h i c h emerges a
plastic case that acts as protection for the actual resistance element. This takes the form of an NTC
(negative temperature coefficient) thermistor. In
practice, sensor electrical resistance drops as t e m perature rises.
According to manifold intake air temperature, the
NTC thermistor alters its ohmmic resistance as
shown in the graph in the figure.
The reference voltage is 5V; since this circuit is designed as a voltage divider, the voltage is distributed between a resistance present in the ECU and the
sensor N.T.C. resistance. The ECU is therefore able
at any moment to assess sensor resistance changes
through voltage changes and thus obtain information on intake air temperature.
Checking resistance
The graph shows changles in resistance levels. These
may be measured by connecting an ohmmeter at the
sensor terminals.
Removing-refitting
Disconnect electrical connection and remove the
sensor screwed into the intake duct.
Tightening torque: 2.4 daNm
Recovery
Air T assumed = 54C.
Self-adaption inhibited during idling.
Wiring connector
The numbers in boxes indicate the corresponding
control unit pins.
35
Engine
Marea-Marea
Weekend^ 16v
Fuel system
10.
ENGINE I D L E S P E E D A C T U A T O R
(step motor) (Weber B02)
1. Bearing
5. Screw
6. Anti-rotation
2. Lead screw
grooves
3. Coils
7. Plunger
4. Magnets
The actuator is fitted to the butterfly valve case and
consists of:
- An electric step motor with two windings in the stator
and a rotor that contains a certain number of permanent magnet pairs.
- A worm and screw reduction unit that converts rotatory motion into linear motion.
In order to idle, i.e. with throttle (4) fully closed, the
engine needs a certain amount of air (Qo) and fuel to
overcome internal friction and maintain rpm levels.
To the quantity of air Qo that leaks through the closed
butterfly valve (4) during idling, an additional quantity
of air Q must be added to allow the engine to maintain
rpm levels constant, particularly during warm up and
when electrical users or external loads are activated (air
conditioner, automatic transmission, etc).
To achieve this result, the system uses a step motor (1)
fastened to butterfly valve case (5) controlled by ECU
(6) which moves a rod fitted with a plunger (3) during
operation. This alters the cross-section of by-pass duct
(2) and thus the amount of air (Qo + Q) taken in by the
engine.
In order to govern this type of action, the ECU uses
angular engine speed and coolant temperature input
from the relevant sensors.
6
+ 12V o-
40
20
m
illllil
36
C J
Q. Air flow regulated by plunger (variable)
L,D
A,J
L,
@4
:
i
i
Marea-Marea
Engine
Weekend ftri v
6
Fuel system
10.
P4F37BJ01
Motor strategy
The number of working steps is dependent upon engine conditions:
- Start-up stage
When the key is inserted, the ECU controls step motor position according to engine coolant temperature and battery voltage.
- Warming-up stage
Rpm levels are corrected according to engine coolan temperature.
- With engine warm:
Idle control is dependent on a signal from the rpm sensor. When external users are activated, t h e ECU
governs sustained idle.
- Over-run:
The ECU recognises over-run status from the throttle potentiometer position.
It controls step motor position by means of the idle f l o w law (DASH-POT laws). In other words, it slows
the return of pluger (3) t o its seat so that a quantity of air by-passing hole (2) reaches the engine and reduces levels of pollutants in the exhaust gas.
Recovery
Actuator operation disenabled and self-adaption of idling fuel mixture level blocked.
Removing-refitting engine idle control actuator (step motor)
- disconnect battery negative terminal;
- unscrew both retaining screws and withdraw the actuator;
- check condition of thoroid seal and remove any impurities from the case seat;
- refit the actuator, checking that the plunger fits easily without forcing. To do this, fit the actuator and
replace screws but do not tighten. Operate the step motor using a Fiat-Lancia/Tester until it has
moved through its entire travel. Tighten screws only after checking plunger is correctly aligned in its
seat and electrical connector is positioned correctly.
NOTE
It is advisable to lea ve the battery negative terminal disconnected for about 20 minutes. Pro vided the above procedure is carried out as described, the ECU will position the idle speed actuator
correctly the first time the engine is started up.
Fit new step motor retaining bolts whenever the bolts are loosened or removed because the
threads are covered with a light layer of loctyte, which guaranteeds a seal only once.
Tightening torque of step motor screws 0.36 - 0.44 da Nm.
37
Engine
Marea-Marea
Weekend^ 16v
Fuel system
10.
ABSOLUTE PRESSURE SENSOR
(Weber PRT 03)
The sensitive element is enclosed within a
plastic container (1) and consists of a Wheatstone bridge screen printed to a very fine circular ceramic plate (diaphragm) fitted to the
underside of a ring mount.
The diaphragm separates t w o chambers: a
vacuum is set up in the bottom sealed chamber while the top chamber communicates
w i t h the intake manifold indirectly through a
rubber pipe (3).
When the engine is off, the diaphragm bends
according to atmospheric pressure level. Exact information on altitude is therefore provided when the key is inserted.
When running, the engine sets up a vacuum
that gives rise to a mechanical effect on the
sensor diaphragm, w h i c h bends to alter the
resistance level.
Because the electrical supply is maintained
constant (5 V) by the control unit, when the
resistance is altered, the output voltage
changes in proportion to the vacuum in the i n take manifold (2).
Recovery
The pressure is calculated according to throttle angle and rpm level.
If the butterfly valve position sensor is faulty,
a fixed calibration value is assigned (about
630 millibars).
Mixture self-adaption is inhibited.
Lambda probe test is inhibited.
mV
4750
2500
250
0
127,5
475,5
7 8 7 , 5 mmHg
Wiring connector
The numbers in boxes indicate the corresponding control unit pins
38
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
COOLANT TEMPERATURE
SENSOR
(Jaeger 401930.01)
The sensor is fitted to the thermostat case. It
consists of a brass case, w h i c h protects the
actual resistance element: an NTC thermistor
(standing for Negative Temperature Coefficient because sensor electrical resistance decreases in inverse proportion to temperature).
The reference voltage is 5V; since this circuit
is designed as a voltage divider, the voltage is
distributed between a resistance present in
the ECU and the sensor N.T.C. resistance.
The ECU is therefore able at any moment to
assess sensor resistance changes through
voltage changes and thus obtain information
on intake air temperature.
Recovery
The last reading is adopted. If the temperature does not correspond to steady state levels, this is gradually increased w i t h time f o l lowing start-up and corrected on the basis of
intake air temperature.
Mixture concentration self-adaption is inhibited.
Idle self-adaption is inhibited.
Checking resistance
The graph plots sensor resistance values.
These may be measured by disconnecting the
connector and connecting an ohmmeter to the
sensor terminals.
Removing-refitting
Disconnect electrical connection and remove
the sensor
Wiring connector
The numbers in boxes indicate the corresponding control unit pins
39
Engine
Marea-Marea Weekend ft i *
Fuel system
10.
E L E C T R I C F U E L PUMP (Walbro-Marwal MSS071)
The pump is housed inside the fuel tank in a holder, together w i t h the fuel level indicator. It is fitted w i t h
a mesh filter on the pump intake.
The pump is volumetric type and designed to work with unleaded fuel.The rotor is turned by an electric
d.c. motor supplied at battery voltage directly through the dual relay, controlled in turn by the ECU.
The motor is submerged in the fuel in order to clean and cool the brushes and commutator.
The pump is fitted w i t h a pressure relief valve, w h i c h short-circuits delivery to intake if inlet circuit pressure exceeds 5 bar. This prevents the electric motor overheating.
A check valve fitted in the delivery line prevents the entire fuel circuit emptying when the pump is not
working.
Rated pump output varies according to angular rotor speed and hence supply voltage: it is about 140 l/h
at a voltage of 12 V.
1. Electrical connectors
2. Delivery port
5. Check valve
3. Inlet port
40
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
Removing-refitting electric fuel pump
fuel
lines
(inlet,
outlet
and
A
<>
41
Engine
Marea-Marea
Weekend^ lev
Fuel system
10.
<>
FUEL FILTER
(Bosch A 450.024.262)
The filter is fitted along the fuel delivery line:
it consists of a sheet steel case and an inner
polyurethane mount about which is w o u n d
an element with high filtering capacity.
NOTE
An arrow on the outside case indicates the direction of fuel flow and
thus the correct fitting direction.
1. Fuel intake
2. Arrow position
3. Fuel outlet
Removing-refitting
42
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
FUEL M A N I F O L D (CB 104)
The fuel manifold is fastened to the inside
part of the intake manifold and its function is
to send fuel to the injectors.
It is pressure cast in aluminium and incorporates housings for injectors and pressure regulator.
The fuel intake is secured w i t h bolts w i t h tapered seals.
Fuel recirculation is via a pipe inside the
manifold and connected to one end of the
regulator and the opposite end of the outer
fuel return line.
1. Fuel manifold
7. Runoff valve
2. Injectors
8. Regulating spring
3. Pressure regulator
9. Vacuum socket
1 1 . Fuel return
6. Membrane
43
Engine
Marea-Marea Weekend ft
Fuel system
10.
F U E L P R E S S U R E REGULATOR (M. Marelli RPM 40)
This differential diaphragm device is set to a pressure of 3.00 0.05 bar in the factory.
Pressurised fuel from the pump exercises thrust on reflux valve (7) countered by calibrated spring ( 8 ) .
When pressure setting is exceeded, reflux valve opens and excess fuel returns to the tank in order to stabilise pressure in the circuit. The vacuum in the intake manifold (acting also on injector nozzle ) acts on
regulator diaphragm through intake (9) in order to reduce the load on the calibration spring.
The pressure differential between the fuel and the injector's surroundings (intake manifold) is therefore
maintained constant under all engine service conditions. The injector f l o w (for a given supply voltage)
thus depends solely on injection time established by the ECU.
NOTE The ECU assumes pressure as a fixed parameter. The regulator should never therefore be tampered with; otherwise the mixture concentration specified for the engine will be altered.
CARBON F I L T E R
CUT-OFF VALVE
AND
FUEL VAPOUR
These components form part of the fuel evaporation control and vapour recovery system.
They are located in the right wheel arch c o m partment and can be reached by removing
the rear part of the right front wheel arch
compartment trim.
Carbon filter
This consists of carbon granules (4) that trap fuel
vapour entering intake (5).
Warm flushing air enters intake (1), through paper
filter (3) and flows over the carbon granules to remove fuel vapours and carry them toward the outlet
(2) and then on toward the cut-off valve.
Air entering through intake (5) may also be pulled
back by a vacuum in the tank, when it serves to ventilate the tank. Partition (6) ensures that the flushing air flows over all the carbon granules and promotes the release of fuel vapour toward the inlet
manifold.
T w o springs (7) allow the mass of granules to expand when the pressure increases.
44
Marea-Marea Weekend ft **
Engine
Fuel system
10.
Fuel vapour cut-off solenoid (M. Marelli Siemens E C 1 )
The function of this valve is to control the quantity of fuel taken up by the active carbon filter and directed to the intake manifold (via the injection-ignition control unit).
The valve is closed when de-activated to prevent fuel vapours enriching the mixture excessively.
The injection-ignition control unit controls operation as follows:
- during start-up, the solenoid remains closed to prevent fuel vapour from enriching the mixture excessively. This condition persists until the coolant temperature reaches a pre-established threshold
(about 65 C)
- w i t h engine warm, the ECU sends the solenoid a square wave signal, w h i c h modulates opening in accordance with the signal empty/full pattern.
In this way, the ECU controls the quantity of fuel vapour sent to the intake to prevent significant
changes in mixture concentration.
Valve core.
Reaction spring.
Magnetic winding.
Pipe connected to air intake manifold
Pipe connected to active carbon filter.
Wiring connector
The numbers in boxes indicate the corresponding control unit pins
Recovery
Mixture self-adaption is inhibited.
Mixture concentration test is inhibited.
Lambda probe test is inhibited.
45
Engine
Marea-Marea Weekend
ftiev
Fuel system
10.
M U L T I F U N C T I O N V A L V E (SIRIO 0175.00)
This valve performs the following functions:
- prevents fuel flowing out when tank is over-filled or in case the vehicle overturns in an accident;
- vents fuel vapours from tank to the active carbon trap filter;
- ventilates the tank if a vacuum builds up inside.
This valve consists of: a float (2); a heavy ball ( 3 ) ; a plate (4), pushed against valve case of spring (5)
and plate ( 8 ) , pushed against plate (4) of spring (9). Multifunctional valve operation may be summarised as follows and depends on fuel tank level:
a. if the tank is full float (2) blocks hole (1) to prevent liquid fuel from reaching active carbon filter and
hence damage to the filter;
b. the tank fuel level drops, float (2) is lowered and rests upon ball (3) to open hole (1). When the pressure exercised by fuel vapours on plate (4) overcomes load of spring ( 5 ) , a ring opening between
plate and valve case opens to allow fuel vapours to emerge from the duct (6) and reach the active
carbon filter.
c. if the drop in tank fuel level is sufficient to set up a vacuum, this acts on plate (8) and overcomes load
of spring (9) so that this moves d o w n to allow tank ventilation through hole (7).
d. if the vehicle overturns, however full the tank, the weight of ball (3) acts on float (2) to push the float
against hole (1) and prevent a dangerous f l o w of fuel to the intake manifold w i t h the attendant risk of
the vehicle catching fire.
P4F46BJ03
46
P4F46BJ04
Engine
Fuel system
10.
V E H I C L E S P E E D SENSOR
S W F B451
BORLETTI TGK
SO.GE.MI.
The sensor is located on the differential outp u t near the left half-axle joint. It sends i n formation on vehicle speed to the control
unit: the signal is also used to operate the
speedometer.
The sensor operates on the principle of the
Hall effect (see section on "engine timing
sensor") and transmits 16 pulses/revolution.
Vehicle speed can therefore be calculated
from pulse frequency.
Removing - refitting
Disconnect electrical connection and remove
the sensor.
Tightening torque 0.8 daNm
Wiring diagram
PRESSURE
VALVE
R E L I E F AND
VENTILATION
47
Engine
Marea-Marea Weekend\Q
Fuel system
10.
I N J E C T O R S ( M . Marelli I W P 001)
The t o p feed, dual jet injectors (with spray offset in relation to injector axis) are specifically designed for
4 valve per cylinder engines: they allow the jets to be directed toward the t w o intake valves.
The fuel jet leaves the injector nozzle with a pressure differential of 3 bars and nebulises immediately to
form t w o propogation cones.
Injector control is sequential, staged, i.e all four injectors are controlled in accordance w i t h the cylinder intake sequence. The supply to each cylinder may begin during the expansion stage up to a time
when intake has already begun.
The fuel manifold presses against the injectors to fasten them into the seats on the intake ducts. They are
also anchored to the fuel manifold by means of safety clips. T w o rubber rings (1) and (2) ensure a seal
to the intake duct and fuel manifold.
The injectors are fed with fuel from the top of the case (2). The injector case houses coil (4) connected
to terminals (5) of electrical connector ( 6 ) .
NOTE
When removing and refitting, do not apply a force greater than HON
its function could be impaired.
Wiring connector
Checking resistance
NOTE
48
Publication
no.
506.763
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
INERTIA S A F E T Y SWITCH
The vehicle is equipped w i t h an inertia
switch located inside the passenger compartment beneath the driver's seat.
This sensor reduces the possibility of fire
(caused by fuel emerging from the injection
system) by de-activating the fuel feed pump.
The switch consists of a steel ball fitted inside
a tapered housing. It is held in position
through the attractive force of an permanent
magnet.
The ball is released from the magnetic force
in the case of violent impact, w h e n it opens
the normally closed (NC) electrical circuit to
cut off the fuel pump earth connection and
thus the fuel supply to the injection system.
To restore the pump earth connection, push
the seat back and press the switch until it
clicks on.
Removing-refitting
1. Move driver's seat back fully, unscrew the
bolts indicated and remove the plastic
protection.
2. Unscrew the bolts indicated, disconnect
electrical connection and remove the
switch.
After even an apparently light collision, if a smell of petrol is noted or fuel leaks are seen, do not activate the
switch again until the fault has been
found and corrected in order to avoid
the risk of fire.
C o m p o n e n t s of inertia s w i t c h
1.
2.
3.
4.
5.
6.
7.
8.
'N.C.
N.A.
C = Common terminal
N.C. Normally closed
N.A. Normally open
49
Engine
Marea-Marea Weekend
ftiev
Fuel system
IGNITION C O I L S
(Marelli Bae 920A)
The coils are fastened by means of a bracket
to the camshaft covers and are closed magnetic loop type. They are formed from a layered pack, whose central core (broken by a
narrow gap) carries both windings.
1.
2.
3.
4.
5.
6.
7.
8.
plug
plug
plug
plug
Wiring connector
NOTE
The numbers
corresponding
I_ H
5f
57
+30
P4F50BJ03
50
P4F50BJ04
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
Checking winding resistance
Primary circuit (A cylinders 1 -4, B cylinders
2-3)
Bring the probes of an ohmmeter into contact
w i t h the postive strip (central pin) and the
negative strip (pin 1 for circuit A and pin 2 for
circuit B).
The primary circuit resistance reading on the
guage should be between 0.55 and 0.61 ohm
at 23 C.
Secondary circuit (C cylinders 1-4, D cylinders 2-3)
Bring the probes of an ohmmeter into contact
between the t w o high tension outlet terminals.
The secondary winding resistance reading on
the gauge must be between 8 6 4 5 and 9555
ohms at 23 C.
Recovery
Inhibition of injectors for cylinders in w h i c h
ingnition is not taking place.
Open-loop concentration control
Current command is de-activated when battery d.c. is applied in order to try again later.
If circuit is open or short-circuited, GND assumes a charge time proportional to battery
voltage.
Removing refitting
1. Disconnect HT leads and the electrical
connection indicated by arrows from the
spark plug assembly.
2. Unscrew the screws indicated and remove
the coil assembly
51
Marea-Marea
Engine
Weekend^
16v
Fuel system
10.
13 8 5 4
10
Go
9
eo
DC
4)[5
u
K2
DC
1 9
D1
8 15
11
10
rB-i
D2LJ
D1
TUT
l~D3~
11(10
3 9 1
15 8 7 14
12136
11
5 4
24
52
8
[5A]
'
13
{25A}
38
1.
2.
3.
4.
5.
6.
7.
52
Battery
Ignition coils
Lambda probe
Injectors
Electronic control unit
Ignition switch
20A system fuse
Marea-Marea Weekend ft i *
Engine
Fuel system
10.
A dual relay specifically for automotive applications ensures the battery voltage reaches the system. This
electrical device consists of a single container containing t w o special normally open relays whose task is
to supply the electronic control unit (section A, control unit supply) and main injection-ignition power
circuits (pump, coils etc.) (section B).
When ignition key is in MAR position "Services 1 5 / 5 4 " , excitation winding of relay (9) on pin 12 and
ECU on pin 13 are activated.
As soon as ECU (5) receives voltage at pin 13 through pin 52 (internal earth), it enables closure of
power contacts of relay A (ECU POWER SUPPLY section) to ensure the battary is supplied at pin 35
through fuse ( 8 ) ; it then enables closure of power contacts of relay B in order to earth pin 7 and ensure a
power supply to pump (11) and the other sensors and actuators making up the injection system.
The fuel pump must be activated before starting up the engine to ensure that the fuel system is already
under a pressure of 3 0.5 bar.If starting does not not take place w i t h the ignition key in MAR position,
the electronic control unit (5) deactivates section of relay (9) pin 7 (pump-components) and automatically stops the pump (11). Timed enablement lasts about 10 sec.
For safety reasons, the ECU (5) activates a control strategy for pump (11) based on engine rpm. In practice, the ECU (5) deactivates section of relay (9) pin 7 in order to cut off supply to the p u m p (11) w h e n
engine rpm drops below a minimum memorised threshold, if the engine stalls with the ignition on or if
the start-up code is not recognised by the Fiat CODE system.
When the ignition key is returned to STOP position, the electronic control unit maintains section A of
the dual relay excited for about 90 seconds before cutting off its power supply (time taken to transfer
data from RAM STAND-BY memory to the EEPROM.
NOTE
the
Removing-refitting
The dual relay is fitted on a bracket against
the rear wall of the engine bay. Proceed as
follows to remove-refit:
Remove the protective cover.
Disconnect electrical connection and remove
the dual relay.
P4F53BJ01
53
Engine
Marea-Marea Weekend i t t i i e v
Fuel system
10.
LAMBDA PROBE (IMTK 0ZA112-A1)
This sensor measures exhaust gas oxygen content.
The sensor output signal is sent to the electronic control unit to adjust the air-fuel mixture in order to
maintain the ratio as close as possible to stoichiometric levels.
To obtain an optimum mixture, the quantity of fuel injected must be as close as possible to a theoretical
quantity that could be fully burnt for a given amount of air taken in by the engine.
0.980
1.020
mV
1000 H
800
600
RICH MIXTURES
LEAN MIXTURES
400
200
0
0,7
0,8 0,9
"Y
1,0 1,1
1,2
'
1,3
AIR COEFFICIENT X
1= 1 Ideal mixture
CO levels are within legal limits
A ^ 1 Lean mixture
Excess air; CO levels tend to be low
X^. 1 Rich mixture
Lack of air; CO levels tend to be high
NOTE
While the coefficient X expresses an excess or lack of air supplied to the engine in relation to
the theoretical required level, the air-fuel mixture is a ratio between these two substances that
react chemically when combined. The stoichiometric proportions depend on fuel type used: this
ratio is 74.7-14.8 for present-day engines, which means they require 14.7 parts of air to burn 1
part of petrol fully.
The probe is fastened upstream of the converter.
It consists of a ceramic case (1) made up of a zirconium dioxide base covered by a light layer of platinum. It is sealed at one end, enclosed in protective pipe (2), and housed in metal case (3) that provides
further protection and permits installation to the exhaust manifold. The outer part (B) of the ceramic
case is exposed to the exhaust gas f l o w while inner part (A) communicates with the outside air.
The probe works on the principle that when the temperature exceeds 300 C, the ceramic material used
begins to conduct oxygen ions. Under these conditions, if the levels of oxygen at both ends (a and b) of
the probe are different, a voltage variation is set up between the t w o ends. This signal notifies the ECU
that the oxygen residues in the exhaust gas are not in proportions that will ensure lean burning of harmful residues.
54
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
a. ( + ) electrode in c o n tact w i t h outside air
b. (-) electrode in c o n tact w i t h exhaust gas
1.
2.
3.
4.
Ceramic case
Protective pipe
Metal case
Electrical resistant
When the probe supplies a low voltage level (less than 200 mV) the ECU recognises that the mixture is
lean (lambda 1) and takes steps to increase the amount of fuel injected. When the probe supplies a
high voltage level (greater than 800 mV) the control unit recognises that the mixture is rich (lambda 1 )
and decreases the quantity of fuel injected.
The lambda probe therefore alters injection times to ensure that the engine operates w i t h a lambda factor
continually fluctuating between 0.980 and 1.020.
Below 300 C the ceramic material is not active and the probe does not send usable signals. A special
circuit in the control unit blocks loop mixture regulation while the probe is warming up.
To ensure service temperature is reached quickly, the probe is equipped with electrical resistance (4)
supplied by the battery
The probe may be swiftly put out of service by even slight traces of lead in the fuel. Operation
should be checked at 45,000 and 90,000 km in accordance with the programmed
maintenance
plan.
Checking resistance
The heater and probe resistance may be measured by disconnecting the connector and
connecting an ohmmeter as indicated in the
figure.
Heater resistance (A) = 4.3 - 4.7 ohm
Probe resistance (B) = 5,000 ohm (max)
Recovery
Lambda data are ignored (open l o o p ) .
Wiring connector
The numbers in boxes indicate the corresponding control unit pins.
55
Engine
Fuel system
10.
REMOVING - REFITTING LAMBDA PROBE
- Place the vehicle on a lift
- Disconnect battery negative lead
- Disconnect electrical connection located
against the rear wall of the engine bay and
protected by a cover.
56
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
C H E C K S , A D J U S T M E N T S AND R E P A I R S TO I N J E C T I O N - I G N I T I O N S Y S T E M
OBSERVE
THE FOLLOWING
PRECAUTIONS
WHEN WORKING ON VEHICLES
WITH I AW
INJECTION-IGNITION
SYSTEMS:
- never start the engine when the electrical terminals are poorly connected or loose on the battery
poles;
- never use a fast battery charger to start the engine;
- never disconnect the battery from the car circuit with the engine running;
- when charging the battery quickly, first disconnect the battery from the vehicle circuit;
- if the vehicle is placed in a drying oven after painting at a temperature of more than 80 C, first remove the injection/ignition
ECU;
- never connect or disconnect the ECU multiple connector with the ignition key in MARC I A position;
- always disconnect battery negative lead before carrying out electrical welding on vehicle.
Note that the memory of this system is active at all times (memory on stand-by), and contains all
learnt self-adaptive parameters. Because all this information would be lost if the battery were disconnected, this operation should only be carried out when absolutely essential.
ADJUSTING THROTTLE CABLE
Position the clip so that head (1) of the accelerator cable fits freely into the slot w i t h o u t
altering idle speed.
REMOVING-REFITTING
FOLD AND I N J E C T O R S
FUEL
MAN I
57
Engine
Marea-Marea Weekend
! H i i
Fuel system
10.
58
Marea-Marea Weekend ft wv
Engine
Fuel system
10.
REMOVING-REFITTING F U E L TANK
Before removing-refitting the fuel tank, position the vehicle on a stand and disconnect
the battery negative lead.
1. Lift the load compartment lining after u n doing the retaining studs using wrench
1878077000. Remove the protective cover shown in the box after undoing the retaining screws.
59
Engine
Marea-Marea
Weekend^ 16v
Fuel system
10.
60
Marea-Marea
Engine
Weekend^ 16v
Fuel system
10.
P4F61BJ04
61
Engine
Marea-Marea
Weekend^i*
Fuel system
10.
CHECKING FUEL SUPPLY CIRCUIT
Test 1
T e s t i n g fuel regulation p r e s s u r e
The last operation is carried out by selecting "fuel p u m p " test on a Fiat/Lancia tester.
Under these conditions, the pressure gauge reading should stabilise at 3.0 bar.
If pressure is insufficient, carry out test 2.
Test 2
T e s t i n g m a x i m u m fuel feed p r e s s u r e
(or p u m p e f f i c i e n c y )
62
Marea-Marea
Weekend^ 16v
Engine
Fuel system
10.
If pressure measured in test 1 (see previous page) exceeds 3 bars proceed as f o l lows:
- disconnect fuel return pipe (at point (1)
for connection to rigid fuel return line to
pump) and place in a container suitable
for collecting the fuel.
- open cocks A and B;
- operate the fuel pump w i t h engine off as
described on previous page, then take
pressure reading off pressure gauge:
a. if it reaches 3 bars replace the fuel return pipe t o the tank because it is
blocked or kinked;
b. if it exceeds 3 bars replace the pressure regulator because it is defective.
Test 3
C h e c k i n g injector s e a l
To check for drips from the injectors, c o n nect as described in first test (regulation
pressure check) and then operate the
pump w i t h the engine off. When the regulation pressure is reached, close control
lever A and simultaneously constrict fuel
return line to tank; use pliers for this purpose and avoid damaging the pipe.
This operation is necessary to discriminate
between true loss from the injectors and a
faulty seal on the fuel pressure regulator
runout valve.
P4F63BJ02
Then:
- turn off the pump;
- see whether pressure remains constant for 60 seconds after stabilising (i.e. dropping slightly).
If it does not, one or more injectors or a fitting are leaking.
- In this case, disconnect the fuel manifold from the intake manifold and keep the pressure gauge c o n nected.
- Repeat the previous test but leave the pressure gauge cock open.
- After supplying the pump w i t h the engine off, look to see whether any of the injectors or connection
sections are dripping.
Replace any dripping injectors and/or repair the defective seal in the leaking joint.
63
Engine
Marea-Marea
Weekend^ 16v
Fuel system
10.
REMOVING-REFITTING
CABLE
ACCELERATOR
P4F64BJ03
64
Marea-Marea
Engine
Weekend^ lev
Fuel system
10.
REMOVING-REFITTING
CONTROL C A B L E
ACCELERATOR
Unscrew the nuts s h o w n in the f i g ure and remove the plate fastening
the accelerator pedal, then remove
the pedal.
Reverse disassembly
tions to refit.
instruc-
65
Engine
Marea-Marea Weekend ft
Fuel system
10.
CHECKING ENGINE IDLE S P E E D
If engine speed is not 850 50 rpm, because the injection-ignition system is self-regulating, no adjustment can be carried out. It is therefore necessary to check that the accelerator linkage is properly adjusted and then search for the fault through full diagnosis using a Fiat/Lancia Tester.
- timing;
- valve clearance;
- engine compression
P4F66BJ01
66
Marea-Marea Weekend ft i
Engine
6 v
Fuel system
10.
T a b l e s h o w i n g e m i s s i o n level
tolerances
CO (%)
HC (p.p.m.)
CO2
0.4 - 1
600
^ 90
> 13
0.35
(%)
12
SENSORS
Injectors
Idle speed actuator
Ignition coils
Vapour recirculation solenoid
Fiat CODE
A warning light on the control panel w i l l not necessarily come on if a fault occurs.
If sensors are not working, the system implements signal reconstruction strategies (recovery) in order
that engine and catalytic converter can function adequately but without experiencing further damage
In this condition, the vehicle can be driven to a service centre for the necessary repairs.
Once the fault has been corrected, the warning light will go off
Any fault that occurs is memorised temporarily by the system control unit in order to facilitate repairs.
When the ignition key is removed, these are transferred to the permanent memory where the can be read
by a Fiat/Lancia Tester.
Diagnosis using Fiat/Lancia tester
Connect the Fiat/Lancia Tester (F.L.T.) to a socket beside the ECU.
Information is exchanged between ECU and Tester via t w o test lines (K e L); the communication protocol follows ISO 8 standards. Line K is t w o - w a y while line L is one-directional (from Tester at control
unit).
The protocol is Master-Slave type sustained at 4800 baud on K line; dialogue is activated by directing to
5 bits on line L.
67
Engine
Marea-Marea Weekend ft
Fuel system
10.
The tester must be connected to the electronic control unit as follows:
1. Connect the Fiat-Lancia Tester using ADAPTER ADT 101 A
2. Activate TESTER either through the cigar lighter or by connecting directly to the battery (a special
extra lead is provided for this purpose).
3. Connect the Tester socket to the test socket.
The Tester is able to perform the following functions:
- Engine parameter display
- Error display
- Active diagnosis
DISPLAYED PARAMETERS
Engine rpm
Injection time
Absolute pressure in inlet manifold
Air temperature
Coolant temperature
Throttle opening angle
Battery voltage
List of errors
RPM sensor
Throttle potentiometer
Absolute pressure sensor
Air temperature sensor
Coolant temperature sensor
Battery
Lambda probe
Injector
Ignition coils
Idle speed actuator
Fuel vapour solenoid
Actuator relays
Control unit
A.C-D.C.
A.C-D.C.
A.C-D.C.
A.C-D.C.
A.C-D.C.
Power s u p p l y > 15.5V
Power s u p p l y < 5V
Status not plausible
(probe disconnected or faulty)
C.C
A.C-D.C.
A.C-D.C.
No. of subsequent steps
A.C-D.C.
A.C-D.C.
Microprocessor or ECU memory faults are indicated.
Self-adaptive parameters
Timing sensor
Speed sensor
Signal framework
A C D.C.
Signal absent
Tooth count incorrect - Space between t w o
missing teeth not recognised
Greater than maximum threshold
Lower than minimum threshold
Code not recognised or not received
Mixture level
Fiat CODE
68
Marea-Marea
Engine
Weekend^ lev
Fuel system
10.
Active diagnosis
The Fiat/Lancia Tester can be used to run the following tests:
- Petrol pump
- Injectors
- Ignition coils
- Fuel vapour control solenoid
- Air conditioner
- Rev counter
- Engine idle speed actuator
- Error deletion
Recovery
In the event of sensor malfunction, the ECU replaces the value transmitted by the sensor w i t h a 'Recovery' value. This is stored in the ECU for use in the case of certain faults or may be reconstructed approximately on the basis of other available information, thus allowing the vehicle to be driven to a service
centre.
The value is also relayed to the Fiat/Lancia tester, and therefore it should be noted, w h e n diagnosing,
that in the event of a malfunction, the Fiat/Lancia tester indicates an error in the affected sensor and displays the recovery value.
Permanent memory
The control unit has a permanent memory, that keeps a record of the error even after its cause has been
eliminated, or after the key has been turned to STOP; and a temporary, volatile memory ( R A M ) , w h i c h
loses error details as soon as the underlying cause has been removed.
This also makes it easier to identify errors of an intermittent nature
Before ending diagnosis, the contents of the "permanent" memory must be deleted using the Fiat/Lancia tester in Active Diagnosis mode.
Otherwise, when reconnected, the tester will still display errors from a previous diagnosis.
The "permanent" memory contents can be erased in the following ways:
1 - Using Fiat/Lancia tester in active diagnosis mode
2 - When the cause of the error no longer exists and the engine has been started 5 times (running for not
less than 20 minutes), leaving at least 2 minutes between one start-up and the next.
Disconnecting
the control unit from the system,
'permanent" memory.
the
69
Marea-Marea Weekend
Engine
ft 16v
Index
10.
HITACHI I N T E G R A T E D
INJECTION/IGNITION S Y S T E M
- Introduction
- Injection/ignition system operational
diagram
SYSTEM MANAGEMENT
STRATEGIES
1
1
. 2
15.
16
17
18
19
20
21
Injection/ignition system
wiring diagram
22
INJECTION/IGNITION S Y S T E M
- Air f l o w meter
- Engine coolant
,
temperature sensor
- Butterfly casing
- Enginejdle speed adjustment
solenoid valve
'
- Butterfly position sensor
- Fuel manifold
- Fuel pressure regulator
- Electric fuel pump
- Fuel filter
- Injectors
- Charcoal filter and fuel vapour
cut out solenoid valve
- Multi-purpose valve and safety
and ventilation valve
- Inertia switch
- Ignition power module
- Ignition coils
, - Vehicle speed sensor
- Detonation sensor
- Lambda sensor
40
40
41
42
43
44
45
C H E C K S , A D J U S T M E N T S AND
REPAIR O P E R A T I O N S
ON T H E HITACHI S Y S T E M
46
30
32
33
34
35
36
36
37
37
38
39
46
47
49
49
49
50
50
51
51
R E L A Y S AND F U S E S
23
DIAGNOSIS
52
EARTH POINTS
24
- Parameters displayed
- Detecting and cancelling faults
- Activating the actuators
52
53
53
INJECTION/IGNITION
SYSTEM COMPONENTS
- Injection/ignition system wiring 25
- Injection/ignition sytem
electronic control unit
- Engine rpm sensor
- Timing sensor
*
24
25
27
29
Marea-Marea Weekend
Engine
fti*
Fuel system
10.
HITACHI I N T E G R A E D I N J E C T I O N / I G N I T I O N S Y S T E M
Introduction
The HITACHI system fitted on the 1746 i.e. 16v version belongs to the category of static advance digital
electronic ignition systems integrated with timed, multiple intermittent type electronic fuel injection systems.
This system has only one control unit, a single set of wiring and one series of joint sensors for both systems.
Its function is to inject the exact quantity of petrol designed to mix w i t h the air introduced into the cylinder, into the engine inlet manifold, upstream of the inlet valves, in order to obtain the correct mixture
strength.
The HITACHI system guarantees smooth operation making it possible t o achieve optimum performance
and fuel consumption and a reduction in harmful emissions through a response in real time t o the different engine operating conditions.
The system is capable of detecting the following parameters by means of appropriate sensors:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
the
the
the
the
the
the
the
the
the
the
This information, usually in analogue format, is converted into digital signals by the analogue/digital
converters ( A / D ) in order to be used by the control unit.
In particular, each engine operating condition is identified, moment by moment, by t w o parameters:
- the engine rotation speed, measured in rpm;
- the engine load, which is basically made up of the quantity of air drawn in by each cylinder.
This quantity is calculated on the basis of the airflowrate effectively drawn in by the cylinders and represents the volumetric efficiency of the engine.
NOTE
NOTE
In the drawings and the diagrams, the numbers indicate the corresponding
control unit pins.
NOTE
the cable
as it is the
HITACHI
self-regu-
engine
inlet.
Engine
Marea-Marea Weekend
ft lev
Fuel system
10.
DIAGRAM SHOWING OPERATION OF HITACHI I N J E C T I O N / I G N I T I O N S Y S T E M
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
Injectors
Fuel pressure regulator
Ignition power module
Ignition coil
Engine timing sensor
Radiator fan
Engine rpm sensor
Detonation sensor
Coolant temperature sensor
Fuel vapour cut out solenoid valve
Charcoal filter
Fiat CODE control unit
Lambda sensor
Catalytic silencer
HITACHI engine control unit
Multi-purpose valve
Fuel vapour separator
Marea-Marea Weekend
ft**
Engine
Fuel system
10.
S Y S T E M MANAGEMENT STRATEGIES
There is a management prorgramme (software) inside the control unit memory which is composed of a
series of strategies, each of which manages a specific system control function.
By using the information (input) supplied by the various sensors, each strategy processes a series of parameters, based on the data maps stored in special areas of the control unit memory and then operates
the system actuators (output) which are devices which allow the engine to function, such as:
1.
2.
3.
4.
5.
injectors
ignition coils;
solenoid valves implementing the different functions;
electric fuel pump;
control relays.
In addition to controlling the moment of ignition at the various engine speeds, in order to allow the engine to run smoothly as the loads applied vary, the management strategies have to control and manage
the moment of ijection so that the stoichiometric ratio (air/fuel) is always within the optimum limit.
The system management strategies are basically as follows:
-management of the signals
-management of the injection;
-management of the engine immobilizer function (Fiat CODE);
-management of the ignition;
-management of the engine idle control;
-management of the fuel vapour recirculation;
-management of the radiator fan;
-management of the climate control system;
-management of the fault diagnosis.
M A N A G E M E N T OF T H E S I G N A L S
During starting, the control unit recognizes the timing of the injection and the ignition, w h i c h are vital
for the subsequent operation of all the strategies.
This recognition is implemented on the basis of the interpretation of the order of signals coming from the
rpm sensor and from the engine timing sensor.
NOTE
The term signals refers to the collection of signals coming from the sensor on the crankshaft and
the one on the camshaft which, featuring a precise reciprocal position, provide the control unit
with a synchronized sequence of signals, which the control unit is capable of
recognizing.
9765 10
9765 10
97 65 10
nn n
nn n
nn n
130
120
u
140
540
360
180
130
9765
10
nn n
120
n
140
1. Cylinder TDC
2. Crankshaft angles
3. Crankshaft flywheel signal
(engine rpm sensor)
4. Camshaft wheel signal (engine t i m ing sensor)
NOTE
The angular values for the signals (3) and (4), indicate the
crankshaft advance angles in
relation to the next TDC.
Engine
Fuel system
10.
MANAGEMENT OF THE INJECTION
The injection management strategies are designed t o provide the engine w i t h the correct quantity of fuel
at the desired moment according to the engine operating conditions.
The injection of fuel in this system is the timed, sequential type for each cylinder; the moment of injection (sending the fuel into the inlet ducts by opening the injectors) is not simultaneous for all the cylinders, but takes place for each cylinder at the optimum injection point, calculated by the control unit f o l lowing special maps according to the engine load and speed conditions.
NOTE
The presence of the air flow meter allows the direct measurement of the mass of air drawn in
(and not the volume) thereby eliminating problems of temperature, altitude, pressure, etc. and
rendering the presence of the air intake and absolute pressure sensors in the system
superfluous.
The management of the injection basically consists of calculating the injection time, determining the i n jection timing and the subsequent implemention by operating the injector.
The "basic" injection time depends on the characteristics of the injector and corresponds to the quantity
of fuel to be injected into each cylinder. The latter is, in turn, determined by multiplying the quantity of
air drawn in by each cylinder (calculated on the basis of the quantity of air drawn in and the engine rotation speed) for the type of mixture desired in relation to the engine operating point.
The final injection time is determined by means of a calculation algorhythm where the "basic" injection
time is corrected by a series of coefficients which take into account the different engine operating condtions which are shown by the various sensors in the system.
Marea-Marea Weekend
Engine
ft lev
Fuel system
10.
Controlling the mixture strength
NOTE
a=
The stoichiometric
ast=
by the oLst :
(lambda):
1=
NOTE
1 Hz = 1 oscillation
per
second
Self-adjustment
The control unit is equipped with a self-adjustment function w h i c h has the task of memorizing possible
differences between the basic map and corrections imposed by the Lambda sensor w h i c h may occur
persistently during operation. These differences (due to the ageing of the system and engine c o m p o nents) are permanently memorized, allow the adjustment of the system operation to the gradual alterations of the engine and the components compared w i t h the characteristics when new.
The strategy is disabled whilst the fuel vapour cut out solenoid valve is open.
If the control unit is replaced, the vehicle must be road tested allowing the engine to reach operating
temperature and the control unit to intervene in the self-adjustment mode (above all during idling
stops).
Engine
Marea-Marea Weekend
fti**
Fuel system
10.
Starting and post-starting
During starting, it is not possible to recognize the engine timing and consequently it is not possible to
implement the injection timing.
During the first engine rpm an intial simultaneous (full group) injection is carried out because the c o n siderable flucutations of the engine speed do not allow the correct calculation of the injection timing;
the injection only becomes the timed type later on.
The "basic" injection time is increased by a multiplication coefficient for the entire time the engine is
driven by the starter motor.
When the engine is started up, the coefficient is gradually reduced until it disappears at a given time; the
lower the engine temperature, the longer the time.
a~7^
ON
OFF
k:
t :
a:
P4F06CJ01
enrichment coefficient
time
engine temperature
function decrease
ON : engine driven (crank)
OFF .engine started (run)
P4F06CJ02
Engine
Fuel system
10.
Operation in full load conditions
In full load conditions it is necessary to increase the basic injection time to achieve the maximum power
supplied by the engine.
The strategy is enabled when the butterfly opening exceeds 70.
The "basic" injection time is multiplied by a coefficient (function of the engine speed) equal to around
1.1.
Operation in acceleration conditions
During this stage, the control unit increases the quantity of fuel supplied.
The "basic" injection time is multiplied by a coefficient w h i c h is a function of the engine temperature
and the opening speed of the accelerator butterfly (average value 1.2).
If the brisk variation of the injection time is calculated when the injector is already closed, the control
unit opens the injector once again (extra pulse), in order to be able to adjust the mixture strength as
quickly as possible: the subsequent injections are increased on the basis of the coefficients mentioned
previously.
Engine
Fuel system
10.
Rotation speed restricter
The strategy limits the maximum speed
which the engine can reach by enabling the
cut off gradually, as shown in the table.
Maximum speed: 6550 rpm
1 cylinder
2 cylinders
3 cylinders
4 cylinders
Given the presence of the Fiat CODE system D O N O T C A R R Y O U T , during the fault diagnosis and/or during operational tests, tests using another injection/ignition
control unit. In effect,
in such a case the Fiat CODE control unit would transfer the (unrecognized)
recognition
code
to the test control unit which could not then be used on other vehicles.
Marea-Marea Weekend
ft**
Engine
Fuel system
10.
M A N A G E M E N T OF THE IGNITION
The ignition system is the static advance inductive discharge type, (i.e. without the high tension distributor).
The system has a single coil for each spark plug; the advantages of this solution are:
- less electrical overloading
- guarantee of constant discharge at each spark plug
The ignition management strategies have the aim of striking the spark w i t h the desired advance depending on the engine operating conditions.
The management of the ignition basically consists of determining the ignition advance and implementing it by operating the power module, located outside of the control unit.
The "basic" advance value, calculated according to the intake air flow rate and the engine speed, is then
corrected according to the different engine operating conditions.
The control unit determines the start of the conduction of the current in the coil primary w i n d i n g on the
basis of the engine rotation speed.
This moment, obviously, varies, in terms of the angle, in relation to the explosion TDC for each cylinder
and the greater the engine rotation speed, the greater the advance because the t\me(dwe//) required to
saturate the current in the primary winding is virtually constant.
The conduction starting time is corrected according to the battery voltage.
1.
2.
3.
4.
Ignition power
Ignition power
Single ignition
Secondary coil
module earth
module
coil (plug-top)
earth
Engine
Marea-Marea Weekend
ft 16v
Fuel system
10.
Starting
PMS
97 6 5
PMS
10
97 65
ON /
OFF
10
r
Aa
ACC
a:
A a:
ON :
OFF:
When the engine is cold an additional advance correction is implemented: the i n crease in the advance compared w i t h that in
the amp is inversely proportional to the temperature of the engine.
Aa'
- A
RPM
X.
+ A RPM
A a:
correzione anticipo di accensione al minimo
+ A R P M : il regime al minimo supera quello nominale
-A RPM: il regime al minimo o inferiore a quello nominale
10
Marea-Marea Weekend
ft**
Engine
Fuel system
10.
Control of the detonation
The strategy has the task of detecting the presence of the phenomenon of detonation (engine knock) by
processing the signal coming from the appropriate sensor. The strategy constantly compares the signal
coming from the sensor w i t h alevel, w h i c h is, in turn, constantly updated, to take into account the background noise and the ageing of the engine.
If the system recognizes the presence of detonation, the strategy reduces the ignition advance, proceeding in 2 steps up to a maximum of 6, until the phenomenon disappears. Then, the advance is gradually
restored until the basic value is reached or until the onset of the phenomenon again. In particular, a d vance increases are implemented gradually, whilst reductions are implemented immediately.
In acceleration conditions, the strategy uses a higher level, to take into account the increased noise of
the engine in these circumstances.
The strategy is also equipped w i t h a self-adjustment function which memorizes the advance reductions
w h i c h could be constantly repeated, in a manner w h i c h is not permanent, so that the advance can be
adapted to the different conditions in w h i c h the engine operates (for example, the use of a low octane
rating fuel). The strategy is capable of restoring the advance to the level memorized if the conditions
w h i c h have produced the reduction disappear.
M A N A G E M E N T O F THE ENGINE I D L E S P E E D
The general aim of the strategy is to keep the engine speed around the value memorized (engine arm:
850 rpm): the position assumed by the engine idle speed adjustment solenoid valve depends on the e n gine speed and load conditions and the speed of the vehicle.
Starting stage
When the key is inserted, the actuator assumes a position which depends on the temperature of the e n gine and the battery voltage (open loop position).
Engine started with accelerator pedal released
The engine speed varies according to the temperature of the engine and is kept constant close to this
value by altering the position of the shutter to compensate for any fluctuations in the speed.
This takes place, in particular, when external loads are applied (power assisted steering, heated rear
windscreen, etcc).
If the electric fans and the air conditioner are switched on, both of w h i c h are managed by the control
unit, the strategy manages the actuator in advance of this switching on.
Normal driving
In these conditions the actuator is in the open loop position.
Deceleration conditions
In deceleration conditions outside of idle, the control unit controls the position of the actuator through a
special curve (dash-pot curve), in other words it slows d o w n the return of the shutter towards its housing, thereby producing a reduction in the braking effect of the engine.
M A N A G E M E N T O F T H E F U E L VAPOUR R E C I R C U L A T I O N
The strategy controls the position of the charcoal filter solenoid valve in the following way:
- during the starting stage, the solenoid valve remains closed, thereby preventing the fuel vapours from
enriching the mixture; this condition continues until the temperature of the engine coolant reaches
25C;
- with the engine warmed up, the control unit operates the solenoid valve in duty-cycle to control the
quantity of fuel vapours sent to the inlet, according to the engine speed and load conditions.
In the following operating conditions:
- butterfly in closed position,
- speed below 1250 rpm,
- engine load TP < 1 ms,
the operation of the solenoid valve is disabled, keeping it in a closed position.
11
Engine
Fuel system
10.
M A N A G E M E N T O F T H E RADIATOR FAN
The control unit directly controls the operation of the radiator fan according to the coolant temperature
and whether or not there is a climate control system.
NOTE
Since the temperature of the engine is measured by the appropriate sensor, there is no longer a
thermal contact on the radiator.
1.
2.
3.
4.
5.
12
Fuse
High speed relay
L o w speed relay
Electric fan
Resistance
Marea-Marea Weekend
ft**
Engine
Fuel system
10.
Operational diagram showing engagement of electric fan for versions with climate control
The graph below illustrates the engagement of the low and high speeds of the radiator cooling fan according to the variation in the engine coolant temperature over a period of time (curve 4 ) .
Low speed: it switches on when the temperature of the coolant reaches 95C.
High speed: it switches on when the temperature of the coolant reaches 100C.
The speed of the electric fan also depends on the state of the three stage pressure switch for the climate
control system, which determines the engagement of the first speed and, w i t h a certain delay, that of the
second and the subsequent switching off.
t[s]
P4F13CJ01
1.
2.
3.
4.
5.
13
Engine
Marea-Marea Weekend
ft lev
Fuel system
10.
MANAGEMENT OF THE CLIMATE CONTROL S Y S T E M
The Hitachi injection/ignition control unit is connected to the climate control system, in operating
terms, in the following way:
1. it receives the request to switch on the compressor from the climate control unit via pin 28 and implements the appropriate measures (increases the idle speed);
2. it gives the go ahead to switch on the compressor via pin 113, when the conditions set out by the
strategies have been ascertained;
3. it receives information concerning the state of the three stage pressure switch from pin 17 and implements the appropriate measures (electric radiator fan operation).
As far as point 1 is concerned, if the engine is idling, the control unit increases the air f l o w rate passing
from the idle actuator in advance of the compressor being switched on and viceversa it returns the actuator to the normal position after the compressor is switched off.
On the other hand, as far as point 2 is concerned, the control unit switches off the compressor automatically:
a) for a period of 6 s (timed disengagement):
- when the butterfly opening is more than 70,
- when the vehicle is accelerating;
b) as long as following critical conditions exist:
- coolant temperature in excess of 114C,
- engine idle speed below 750 rpm.
1. Compressor
2. Compressor relay feed
3. Battery
4. Ignition switch
5. Climate
control
switch
engagement
6. Frost sensor
7. Three stage pressure switch
8. Injection/ignition control unit
M A N A G E M E N T O F THE F A U L T D I A G N O S I S
The complete electronic fault diagnosis of the injection/ignition system is obtained by connecting the
FIAT/LANCIA TESTER to the diagnostic socket.
The system, however, is also equipped w i t h an autodiagnostic function which recognizes, memorizes
and signals a possible failure.
If a failure is detected at the sensors or actuators, the signal reconstruction strategies (recovery) are i m mediately activated in order to guarantee the operation of the engine at an acceptable level w i t h o u t adversely affecting its operation. It is therefore possible to drive the vehicle to a service centre to have the
appropriate operations carried out.
14
Marea-Marea Weekend
ft**
Engine
Fuel system
10.
DI AG R R A M
SHOWING
THE
INFORMATION
ENTERING/LEAVING
THE
I N J E C T I O N / I G N I T I O N S Y S T E M CONTROL UNIT AND S E N S O R S / A C T U A T O R S
HITACHI
P4F15CJ01
Components key
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15
Engine
Fuel system
10.
DIAGRAM SHOWING T H E A I R INTAKE C I R C U I T
P4F16CJ01
1.
2.
3.
4.
5.
6.
7.
8.
16
Inlet manifold
Engine speed adjustment solenoid valve
Air flow meter
Butterfly casing
Air filter
Resonators
Inlet vent
Exhaust manifold
Marea-Marea Weekend
ft 16v
Engine
Fuel system
10.
D I A G R A M SHOWING FUEL SUPPLY C I R C U I T
1. Fuel tank
5. Fuel return
6. Fuel manifold
3. Fuel filter
7. Injectors
4. Fuel supply
The supply of fuel is achieved by means of an electric pump immersed in the tank w h i c h draws in the f u el and sends it to the filter and consequently to the injectors.
The fuel supply pressure at the injectors is kept constant and proportional to the pressure value in the i n let manifold by the pressure regulator which acts on the fuel f l o w rate in order to keep the rise in pressure
at the injectors constant.
The excess fuel flows from the pressure regulator, not under pressure, to the tank.
17
Engine
Fuel system
10.
DIAGRAM SHOWING F U E L A N T I - E V A P O R A T I O N C I R C U I T
1.
2.
3.
4.
5.
Fuel tank
Vapour separator
Float valve
Cap w i t h safety valve
Engine control unit
6.
7.
8.
9.
10.
Charcoal filter
Charcoal filter solenoid valve
Multi-purpose valve
Inlet manifold
Relay
The anti-evaporation system has the task of preventing the fuel vapours, made up of the lightest parts of
hydrocarbons which basically form in the tank, from being discharged into the atmosphere.
The system operates, above all, at high outside temperatures when the temperature of the fuel increases
and consequently the tendency to evaporation increases likewise: in this situation there is an increase in
the pressure in the tank.
In particular, with the tank (1) full, w i t h the vehicle stationary, the t w o float valves (3) remain open, as
they are positioned higher than the breather pipe, and the vapours reach the separator (2) from where
they condense and mostly return to the tank.
On the other hand, if there is a great deal of splashing during driving or the vehicle overturns, the valves
(3) close preventing the escape of fuel.
When the pressure inside the tank reaches about 30 - 40 bar, the multi-purpose valve (8) opens and the
fuel vapours reach the charcoal filter ( 6 ) . The valve (8) also allows an intake of air into the tank through
the charcoal filter if it is necessary after the level of fuel decreases and a vacuum is consequently created
inside the tank.
When the engine is running, the control unit operates the charcoal filter solenoid valve which allows the
intake of vapours by the engine and the consequent washing of the charcoal filter.
If as a result of a malfunction w i t h any of the components, the pressure inside the tank increases to dangerous levels, then the safety valve located in the cap (4) w o u l d allow the pressure to be discharged
outwards. If necessary,, this valve can open in the other direction to ventilate the tank and prevent the
vacuum from becoming too great.
18
Marea-Marea Weekend
Engine
ft 16V
Fuel system
10.
P R O C E D U R E FOR R E M O V I N G T H E A N TI-EVAPORATION S Y S T E M RAPID ATTACHMENT PIPE FROM THE INLET
MANIFOLD
The pipe for the anti-evaporation system (1)
is held in place on the inlet manifold cartridge
(2) by means of a clamp ( 3 ) . A flexible
washer (4) keeps the cartridge (2) in its
housing preventing any fuel vapours from escaping by means of an O-ring ( 5 ) .
II 9 7 Update
18/1
Engine
Marea-Marea Weekend
ft**
Fuel system
10.
Replacing clamp
A kit is supplied for replacing the clamp
w h i c h comprises an O-ring (5) and a clamp
(3).
After having removed the anti-evaporation
system pipe, insert your fingers between the
clamp (3) and the cartridge (2) casing (to facilitate the operation move the clamp aside
using a screwdriver working w i t h extreme
caution). Pull outwards and rotate the actual
clamp.
18/2
II 9 7
Update
Marea-Marea Weekend
ft**
Engine
Fuel system
10.
D I G R A M SHOWING R E C I R C U L A T I O N O F G A S E S COMING F R O M T H E C R A N K C A S E ( B L O W - B Y )
P4F19CJ01
19
Engine
Marea-Marea Weekend
ft"*
Fuel system
So!
ENGINE E X H A U S T A S S E M B L Y DIAGRAM
P4F20CJ01
1. Exhaust manifold
3. Catalytic silencer
2. Lambda sensor
4. Silencers
The control of the mixture strength, which is the closed loop type, is activated by the Lambda sensor
which measures the oxygen content in the exhaust gases upstream of the catalytic silencer.
The Lambda sensor measurements allow the electronic control unit to constantly correct the quantity of
petrol injected keeping the air/fuel ratio constant.
In this way the harmful exhaust emissions are controlled, a task completed by the three way catalytic
converter (catalytic silencer).
The efficient operation of the catalytic silencer and consequently the containing of the toxic exhaust
gases depends on the air/fuel ratio w h i c h the engine receives.
The three way catalytic converter makes it possible to simultaneously restrict the three pollutant gases
present in the exhaust gases: unburnt hydrocarbons (HC), carbon monoxide (CO), nitrous oxides
(NOx).
Two types of chemical reaction take place inside the converter:
- oxidation of the CO and the HC, converted into carbon dioxide ( C 0 2 ) and water ( H 2 0 )
- reduction of the NOx, converted into Nitrogen ( N 2 ) .
The following will rapidly put the catalytic converter out of action and render it irreparable:
- the presence of lead in the petrol w h i c h lowers the degree of conversion to such levels as to make its
presence in the system superfluous;
- the presence of unburnt petrol in the converter: in effect, a f l o w of petrol for a duation of 30 sees in an
ambient of 800C (temperature inside the silencer) is sufficient to cause the catalyzer t o melt and
break.
It is absolutely vital for the ignition system to be in perfect working order, therefore the spark plug leads
should not be disconnected with the engine running for any reason and, in the case of t e s t s , the catalytic converter should be replaced with an equivalent section of pipe.
20
Marea-Marea Weekend
Engine
ftp*
Fuel system
10.
LOCATION OF I N J E C T I O N / I G N I T I O N S Y S T E M C O M P O N E N T S IN ENGINE C O M P A R T M E N T
Key:
1. Diagnostic socket
2. Earth on engine
3. Ignition power module
4.
5.
6.
7.
8.
9.
Injectors
Engine rpm sensor
Fuel pressure regulator
Engine idle speed adjustment solenoid valve
Butterfly valve position sensor
Air f l o w meter
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
Lambda sensor
Secondary coil earth
Engine timing sensor
Ignition coils
Detonation sensor
21
Engine
Fuel system
10.
IIMJECTION/IGIMITINO S Y S T E M W I R I N G DIAGRAM
-E
i-
7"\
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H-
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CSJ
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M M M, M M M M,
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csj
OO
csi
LO
OO
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ro
22
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ro
inn
CSJ
Marea-Marea Weekend
Engine
ft 16v
Fuel system
10.
Injection/ignition system wiring diagram components key
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
25.
26.
27.
13.
28.
14.
29.
30.
15.
31.
16.
32.
33.
17.
34.
18.
35.
36.
37.
I N J E C T I O N / I G N I T I O N S Y S T E M F U S E S AND R E L A Y S
Injectors
Fuel vapour solenoid valve
Inertia switch
Electric fuel pump
Electric fuel pump relay
System relay feed
A W signal from ignition switch ( + 50)
Supply from battery (+30)
Supply from ignition switch ( + 15)
Electric pump fuse (30 A)
System fuse (15 A)
Earth (on engine block)
Earth (below cylinder head cover)
NOTE
connections.
P4F23CJ02
23
Engine
Marea-Marea Weekend
ft 16v
Fuel system
10.
EARTH POINTS
In order to increase electro-magnetic compatibility and operational reliability special
care has been taken over the location of the
earth points as illustrated in the diagram below:
1. control unit casing, connected to the vehicle bodyshell;
2. coils secondary winding connected under
the cylinder head cover;
3. control unit internal earths (pins
107, 108, 116, 40, 4 8 ) , Lambda
heater earth, relay earths, ignition
module earth connected t o the
crankcase.
6, 12,
sensor
power
engine
P4F24CJ03
INJECTION/IGNITION S Y S T E M COMPONENTS
The injection/ignition system basically comprises wiring, an electronic control unit (injection/ignition
control unit) and the following components:
system and electric pump fuses, system and
electric pump relays
sensors:
-
24
actuators:
-
Marea-Marea Weekend
ft
Engine
Fuel system
10.
I N J E C T I O N / I G N I T I O N S Y S T E M WIRING
The connection between the different components of the system is achieved by means of a single set of
wiring fitted with various type connectors grouped in special ducts fitted on the engine ( p r e - w i r i n g ) .
I N J E C T I O N / I G N I T I O N E L E C T R O N I C CONTROL UNIT
It is connected to the electrical wiring by means of four specific connectors and they receive all the data
concerning the engine operating conditions transmitted by the various sensors.
It receives all the information concerning the engine operating conditions transmitted by the various
sensors.
Using this data and with the assistance of typical programmes stored indelibly in its memory, the control
unit is capable of achieving the following objectives:
1. Managing the frequency and the time of injection; i.e. providing the quantity of fuel calculated for
each cylinder with a timed, sequential type operation (1 - 3 - 4 - 2 ) .
In pratice, the air/fuel ratio should always remain within the optimum value, defined during the setting up, in order to limit fuel consumption, reduce harmful exhaust gas emissions and improve the
thermodynamic efficiency of the engine.
2. Electronically controlling the moment of ignition (ignition advance).
3. Controlling the air flow rate at the rotation speed through the specific sensor in order to allow the
smooth operation of the engine as the environmental parameters and load s applied vary.
4. Detecting, through implementing the special programmes, any operating defects for the various sensors recorded in the RAM and replacing any incorrect data or data w h i c h has not been received w i t h
the replacement values in order to ensure the operation of the engine even in emergency conditions
(RECOVERY).
5. Providing the Fiat/Lancia Tester, if connected, with the data relating to operating defects detected
and memorized, through the serial line (diagnostic socket).
Removing-refitting
The control unit is located under the glove compartment; it should be removed by carrying out the f o l lowing operations:
1. Remove the plastic protection under the control unit;
2. undo the bolts fixing the control unit to the mounting bracket and rest the control unit on the
floor of the vehicle;
- disconnect the electrical connectors, one by one;
- remove the control unit.
P4F25CJ01
P4F25CJ02
25
Marea-Marea Weekend
Engine
ft 16v
Fuel system
10.
Identification of connections at the control unit (pin-out)
101
c
r n
IDDDDDOD
iooooo
JOOOOO
ooooooooo
ooooooooo
109
Connector A
101.
102.
103.
104.
105.
106.
107.
108.
109.
110.
111.
112.
113.
114. N.C.
115. N.C.
116. Earth
Connector B
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Operation
Operation
Operation
Operation
Operation
Earth
of cylinder 2 coil
of cylinder 4 coil
of electric fan low speed relay
of electric fan high speed relay
of system failure light
24.
25.
26.
27.
28.
29.
30.
31.
32.
N.C.
Butterfly position sensosr signal
Negative for Lambda sensor
N.C.
Compressor engagement signal (if fitted)
A W signal from ignition switch (+50)
N.C.
Earth for detonation sensor
Negative for coolant temperature and butterfly position
Connector C
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
N.C.
Positive for air flow meter
Positive for coolant temperature sensor
Positive for Lambda sensor
Three stage thermostat signal (if fitted)
N.C.
N.C.
Connection with Fiat CODE
Positive for detonation sensor
Negative for air flow meter
Line K
Connector D
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
Marea-Marea Weekend
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Engine
Fuel system
io7
ENGINE R P M SENSOR
(Hitachi RS-125)
The sensor is fixed to the cylinder block/crankcase: the flywheel is fixed to the
crankshaft.
Operating principle
The sensor is made up of a tubular casing (1)
which contains a permanent magnet (3) and
an electrical winding (2):
As a result of the flywheel teeth passing by,
the mangetic flux produced by the magnet
(3) is subject to oscillations as a result of the
variation in the gap.
These oscillations create an electro-motive
force in the winding (2) where the voltage is
alternately positive (tooth facing the sensor)
and negative (gap facing the sensor): see
paragraph on "signal management"). The
peak sensor output voltage depends, like
other factors, on the distance between the
sensor and the tooth (gap).
Wiring connector
The sensor is connected to the electronic
control unit (pins 33 and 41) by twisted cables covered by an outer casing giving protection against interference and connected to
earth.
NOTE
corre-
27
Engine
Marea-Marea Weekend
ft 16V
Fuel system
10.
Checking the resistance
The resistance of the sensor may be measured by disconnecting the connector and
connecting an ohmmeter to the sensor.
Resistance: 570 57 ohm at 20 C
Recovery
In the case of a sensor failure, the control unit
does not allow the engine to be started up.
If the fault occurs with the engine running,
the engine cuts out.
E
IMOTE
Checking gap
1
-
a
J
P4F28CJ03
28
If the gap between the sensor and the flywheel needs to be checked, proceed as described below:
- measure the distance between the end of
the sensor and the lower part of the sensor
bracket (distance " a " ) ;
- measure the distance between the fitting
element on the crankcase and the upper
part of the tooth (distance " b " ) , repeating
the measurement for at least t w o opposite
teeth.
The gap (t = b-a) should be between 0.4
and 1.2 mm.
1. Sensor
2. Fitting element
3. Flywheel tooth
Print no. 506.763
Marea-Marea Weekend
Engine
ft 16v
Fuel system
10.
ENGINE T I M I N G SENSOR
(Bosch B.232.070.023)
NOTE
Recovery
In the case of a sensor failure, the control unit
does not allow the engine to be started up.
If, however, the fault occurs w i t h the engine
running and after the control unit has recognized the timing, then the engine is kept running.
Wiring connector
The numbers indicate the
control unit pins.
corresponding
Removing-refitting
This operation involves the removal of the
toothed timing belt and the camshaft toothed
pulley, exhaust side.
Having carried out these operations it is necessary to:
- disconnect the electrical connector;
- undo the t w o fixing bolts (arrow) and remove the sensor.
When refitting reverse the procedure, f o l l o w ing the fitting instructions and tensioning the
toothed belt.
NOTE
29
Engine
Marea-Marea Weekend
ft**
Fuel system
10.
AIR FLOW M E T E R
(Hitachi AFH-13B)
The air flow meter is the hot wire type.
It has a duct in the upper section, parallel to
the main flow, w h i c h contains the heated element.
Part of the intake air flow is introduced into
the duct and, after having passed through it,
it comes out of the opposite part, returning to
the main flow.
As a result, only part of the mass of air w h i c h
passes through the flow meter is measured:
this quantity is, however, proportional to the
overall mass in the flow meter.
The electrical voltage coming out of the f l o w
meter is therefore representative of the total
f l o w rate which is calculated by applying the
appropriate proportionality parameters.
1.
2.
3.
4.
5.
6.
30
Marea-Marea Weekend
Engine
ft 16v
Fuel system
10.
Wiring connector
The numbers indicate the
control unit pins.
corresponding
Removing-refitting
- Remove the battery, disconnect the electrical connector (1) from the f l o w meter and
loosen the bands (2) and (3) fixing the i n let hose;
31
Engine
Marea-Marea Weekend
ft 16v
Fuel system
10.
COOLANT T E M P E R A T U R E SENSOR
(Bosch 0.280.130.055)
The sensor is fitted on the thermostat.
It is made up of a brass casing which acts as
protection for the actual resistive element,
made up of an NTC type thermistor (Negative
Temperature Coefficient) whose electrical resistance decreases as the temperature increases.
The reference voltage is 5 Volt: since the control unit inlet circuit is designed as a voltage
divider, the reference voltage is divided between a resistance in the control unit and the
actual sensor.
As a result the control unit is capable of evaluating the variations in resistance for the sensor through changes in the voltage.
Recovery
During starting a temperature of T = 20C is
assumed and is increased by 1 C every 6 seconds until a temperature of T = 80C is
reached.
With the ignition switch in the ON position
and the number of revs above zero, the radiator cooling fan is always working.
Additional provisions
The self-adjustment functions for the mixture
strength and the idle are disabled.
Wiring connector
The numbers indicate the
control unit pins.
corresponding
Removing-refitting
- Disconnect the electrical connector from
the sensor;
- undo the sensor, removing it from its housing.
Tightening torque 1.5 daNm
32
Take great care to refit the sensor correctly and over the electrical
connection because the information
transmitted by the sensor is also used by
the control unit for the operation of
the radiator fan.
Marea-Marea Weekend
Engine
ft 16v
Fuel system
10.
B U T T E R F L Y CASING (Hitachi GL007817)
The butterfly casing has the task of metering the quantity of supplied to the engine (and consequently
the power developed) according to the request from the driver via the accelerator.
The butterfly casing is fixed to the inlet manifold by four bolts: the butterfly is kept open through levers
which produce a slight opening w h i c h , in line w i t h the pedal travel, creates small butterfly openings
with the pedal slightly pressed and large angles w i t h the pedal very depressed.
With the pedal completely released (engine decelerating or idling) the additional air needed is supplied
by the engine idle adjustment solenoid valve: under these circumstances the butterfly opening lever is in
contact against an anti-tamper screw w h i c h prevents the butterfly from locking in the closed position.
To prevent the formation of ice on the butterfly and in the opening connected to the PCV valve, the butterfly casing is heated w i t h a small quantity of coolant, coming from the engine thermostat, circulating in
a chamber inside the actual casing.
There is also the PCV valve (Positive Crank Ventilation) for the oil vapour recirculation system fitted on
the butterfly casing and the butterfly position sensor.
The anti-tamper
with.
screw is adjusted
tampered
1. Anti-tamper screw
5. PCV valve
33
Engine
Fuel system
10.
ENGINE I D L E S P E E D
SOLENOID VALVE
(Hitachi G L 326716)
ADJUSTMENT
ON
The procedure of
removing-refitting
the solenoid valve is given overleaf,
together with the procedure for the
butterfly position
sensor.
Operating principle
B
OFF
Recovery
1
1 109
Wiring connector
The numbers indicate the
control unit pins.
34
corresponding
Marea-Marea Weekend
Engine
ft 16v
Fuel system
10.
B U T T E R F L Y POSITION S E N S O R
(Hitachi G L 326686)
The sensor is made up of a single track p o tentiometer where the moving part is rotated
by the accelerator butterfly shaft.
Wiring connector
The numbers indicate the
control unit pins.
corresponding
35
Engine
Marea-Marea Weekend
fti**
Fuel system
10.
F U E L M A N I F O L D ( W E B E R C B 93)
The fuel manifold, which has the function of distributing the fuel to the injectors, is produced through
aluminium die-casting and incorporates the housings for the injectors and for the pressure regulator.
The fuel inlet has a conical seal fixing bolt.
The fuel is recirculated by means of a pipe inside the manifold, connected at one end to the regulator and
at the other end to the external return pipe to the tank.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Fuel manifold
Injectors
Pressure regulator
Fuel inlet connector
Fuel return connector
Diaphragm
Flow valve
Adjustment spring
Vacuum pick up
Fuel inlet
Fuel outlet
F U E L P R E S S U R E R E G U L A T O R (RPM 40)
This is a differential diaphragm device, regulated in the Factory, at a pressure of 3.00 0.05 bar.
The fuel, under pressure, coming from the pump, exerts a force on the f l o w valve (7) opposed by the calibrated spring ( 8 ) . When the calibration pressure is overcome, the f l o w valve opens and the excess fuel
returns to the tank, thereby stabilizing the pressure in the circuit.
In addition, by means of the intake ( 9 ) , the vacuum in the inlet manifold (at which the nose of the injector also finds itself), acts on the regulator diaphragm, reducing the load exerted by the calibration spring.
In this way, the pressure differential existing between the fuel and the environment (inlet manifold), in
which the injector finds itself in every engine operating condition, is kept constant.
Consequently, the injector f l o w rate (for a certain supply voltage) depends only on the injection time established bythe control unit.
N OTE
36
The pressure is assumed by the control unit as a fixed parameter: as a result the regulator
never be tampered with in order not to alter the mixture strength for the engine.
should
Marea-Marea Weekend
fti*
Engine
Fuel system
10.
Removing-refitting fuel manifold
NOTE
Before operating on the supply circuit, it is advisable to discharge the pressure from the actual
circuit by disconnecting the pressure regulator vacuum inlet pipe from the inlet manifold and
applying a slight vacuum.
Remove the fuel manifold complete with injectors and pressure regulator by carrying out the f o l l o w i n g
operations:
F U E L F I L T E R ( B o s c h A.450.024.262)
The fuel filter is fitted under the floor panel, on the fuel supply pipe. For the removing-refitting procedure, refer to the Fuel System section for the 1581 16V version 16v.
37
Engine
Marea-Marea Weekend
ft**
Fuel system
10.
INJECTORS
(Hitachi J S 2 1 - 1 B )
1.
2.
3.
4.
5.
6.
P4F38CJ02
Wiring connector
The numbers indicate the
control unit pins
corresponding
Fuel inlet
Deflector
Jet
Nose
Jet of fuel
Electrical connector
1 " 1
2)
38
P4F38CJ04
Engine
Fuel system
10.
CHARCOAL F I L T E R AND F U E L V A P O U R
C U T OUT S O L E N O I D V A L V E
The charcoal filter and the solenoid valve are
located inthe right wheel arch.
For the description of the charcoal filter, refer
to the Fuel System section for the 1581 16V
version 16v.
1. Vapour cut out solenoid valve
2. Charcoal filter
P4F39CJ01
1. Inlet connector
2. One-way valve
3. Spring
4. Shutter
5. Outlet aperture
6. Solenoid valve
7. Outlet union
Copyright
by Fiat
Auto
39
Engine
Fuel system
10.
Removing-refitting
The procedure is valid for both the charcoal filter and the vapour cut out solenoid valve.
- Raise the vehicle;
- remove the right front wheel;
- remove the right front wheel arch lining;
- undo the bolt which fixes the component concerned to the mounting bracket;
- remove the electrical connection and the pipes connected;
- remove the component involved.
Wiring connector
The numbers indicate the
control unit pins
corresponding
M U L T I - P U R P O S E V A L V E AND S A F E T Y AND V E N T I L A T I O N V A L V E
These valves belong to the anti-evaporation system and fuel vapour recirculation. For a description of
them, refer to the Fuel System section for the 1581 16V version.
INERTIA SWITCH
In order to improve the degree of safety for
the occupants of the vehicle in the case of an
impact, the vehicle is equipped w i t h an inertia switch, located inside the passenger compartment, under the driver's seat.
This sensor reduces the risk of fire (as a result
of fuel escaping from the injection system) by
de-activating the electric pump w h i c h supplies the injection circuit.
For the complete description and the removing-refitting procedure, refer to the Fuel System section for the 1581 16V engine.
40
Marea-Marea Weekend
ft 16v
Engine
Fuel system
10.
IGNITION POWER M O D U L E
(Hitachi DIS4-06A)
The power module, located at the side of the
inlet manifold, is basically an electronic
switch w h i c h , by means of impulses coming
from the control unit, controls the current in
the ignition coil primary w i n d i n g .
Through a particular circuit, it limits the current which circulates in the coil primary
winding w h e n the maximum value is reached
in order to reduce the heating of the actual
module.
To prevent the coil from overheating if the i g nition is switched on w i t h the engine not
started up, the module has a device w h i c h
places it in the rest position w h e n the ignition
impulses arriving from the control unit cease.
Wiring connector
A: module inlet
82
wm
+
B: module outlet
C: ignition coil
mm
rc
x\
Removing-refitting
Remove the ignition power module by carrying out the following operations:
- disconnect the electrical inlet and outlet
connectors (arrows);
E
Copyright by Fiat Auto
41
Engine
Marea-Marea Weekend
ft 16v
Fuel system
10.
IGNITION C O I L S
(Hitachi CM14-301)
Removing-refitting
Proceed with the removal of the ignition coils
by carrying out the following operations:
- disconnect the electrical connector;
- undo the t w o fixing bolts and remove the
coil, extracting it from the housing.
NOTE
kxJ&P I
Checking coil primary circuit resistance
The resistance is checked by operating as shown in the diagrams.
Primary resistance: 0.6 0.06 ohm
42
31126V
Marea-Marea Weekend fti
Engine
Fuel system
10.
V E H I C L E S P E E D SENSOR
(Jaeger)
The sensor is located at the outlet of the differential, by the left drive shaft joint and
transmits information to the control unit c o n cerning the vehicle speed: the signal is also
used for the operation of the speedometer.
The sensor is the Hall effect type and is calibrated so that each impulse corresponds to a
distance of one metre: on the basis of the frequency of the impulses it is therefore possible
to know the speed of the vehicle.
Recovery
Speed set = 0
Additional provisions
The self-adjustment of the idle is disabled.
Wiring connector
The numbers indicate the
control unit pins.
corresponding
Removing-refitting
2x)
HALL IC
Disconnect the electrical connector and undo the vehicle speed sensor casing, removing
it from its housing.
Wiring diagram
43
Engine
Fuel system
10.
DETONATION S E N S O R
(KNE-03)
Operating principle
The molecules of a quartz crystal feature
electrical polarization.
In rest conditions (A) the molecules do not
assume a particular position.
When the crystal is subject to pressure or an
impact ( B ) , the greater the pressure to w h i c h
the crystal is subjected, the more they assume
a direction. This produces a voltage in the
crystal.
A: Rest position
B: position under pressure
Wiring connector
The numbers indicate the
control unit pins.
corresponding
Removing-refitting
Disconnect the electrical connector, undo
the bolt fixing the detonation sensor and remove it.
44
Marea-Marea Weekend
Engine
ft 16v
Fuel system
10.
LAMBDA S E N S O R
(NGK 0ZA112-A3)
The lambda sensor measures the oxygen
content in the exhaust gases: it is fitted on the
exhaust pipe upstream of the catalytic silencer.
For the detailed description of the operating
principle of the sensor, refer to the Fuel System section for the 1581 16V version.
Recovery
The reading of the sensor voltage is disabled
(open-loop).
28
Wiring connector
corresponding
Tightening
daNm
torque
3.5
4.5
: 0
CH
VWW^
y\\
B *
P4F45CJ03
45
Engine
Marea-Marea Weekend
ft 16v
Fuel system
10.
C H E C K S , A D J U S T M E N T S AND REPAIR O P E R A T I O N S ON THE HITACHI S Y S T E M
THE FOLLOWING
PRECAUTIONS
CLE EQUIPPED
WITH A HITACHI
SHOULD BE OBSERVED
INJECTION/IGNITION
WHEN WORKING
SYSTEM:
- do not start up the engine with the terminals for the electrical connections
nected or slack at the battery poles;
- do not use a rapid battery charger to start the engine;
ON A
not properly
VEHIcon-
- never disconnect the battery from the electrical system with the engine running;
- to charge the battery, disconnect it first from the electrical
equipment;
- if the vehicle goes in a drying oven after painting at temperatures in excess of80C, it is necessary to remove the engien control unit from the vehicle;
- do not connect/disconnect
the multiple connector for the control unit with the ignition switch
in the ON position;
- always disconnect the negative battery lead before carrying out electrical welding on the vehicle.
The system has a memory which is directly supplied by the battery, even with the ignition
switched off, where the values obtained during auto-adjustment are memorized. The operation
of disconnecting the battery causes this data to be lost and it can only be acquired again after a
certain distance: this operation should therefore be limited as far as posssible.
REMOVING-REFITTING
CASING
BUTTERFLY
undo the four bolts fixing the butterfly casing (arrow) to the inlet manifold;
release the end of the accelerator cable
from the control lever;
remove the coolant connecting pipes from
the inlet and outlet pipes, sealing them as
appropriate;
lastly, remove the b l o w - b y pipe (3) from
the butterfly casing.
46
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Engine
Fuel system
10.
FUEL CIRCUIT PRESSURE CHECKS
Keeping the same connections as for the previous test, close the tap (2) located d o w n stream of the pressure gauge, operate the
electric pump w i t h the engine switched off,
as described for the previous test: the pressure should reach 5 bar and not exceed 7 bar
(pump safety valve setting). If this is not the
case, replace the electric pump because it is
defective.
47
Engine
Fuel system
10.
If in the previous test the pressure measured was above 3.0 bar then it is necessary to:
- disconnect the fuel return pipe from the pressure regulator and replace it temporarily w i t h a pipe
which, inserted in the filler, allows the return of the fuel to the tank;
- supply the electric pump with the engine switched off as described in the previous test, then read the
pressure reached on the gauge:
1. if it reaches 3.0 bar the fuel return pipe to the tank has to be replaced because it is obstructed or
bent;
2. if it exceeds 3.0 bar then the pressure regulator has to be replaced because it is defective.
NOTE
At the end of the tests, refit the pump relay in its housing, if it has been
removed.
P4F48CJ01
If this is the case, remove the injector and the fuel manifold from the inlet manifold, maintaining the c o n nection with the pressure gauge.
Repeat the previous test leaving the tap (1) open.
Supply the engine with the electric pump switched off and observe whether any connecting sections are
leaking.
Replace any injector which is dripping and/or renew the defective seal for the connection w h i c h is leaking.
48
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Fuel system
10.
REMOVING-REFITTING
CABLE
ACCELERATOR
49
Engine
Fuel system
10.
CONTROLLING CONCENTRATION O F E M I S S I O N S
The system manages the advance, the carbon monoxide (CO) content and the air idle flow rate without
the possibility for adjustments so no manual regulation is possible.
However, a check on the content of the exhaust gases, upstream and downstream of the catalyzer, can
provide precious indications on the operating conditions of the injection/ignition system, the engine
parameters and the catalyzer.
Checking idle concentration of CO and HC upstream of the catalytic silencer
To check the concentration of carbon monoxide (CO) and unburnt hydrocarbons (HC) upstream of the
catalyzer, proceed as follows:
1. Undo the cap located on the exhaust pipe, upstream of the catalyzer, and tighten the tool in its place.
2. Connect a suitably calibrated CO-tester to the tool.
3. Start up the engine and let it reach operating temperature.
4. Check that the engine speed is as planned.
5. Check that the idle concentration of CO is within the recommended values (see table); if this is not
the case, it is necessary to check:
- that the Lambda sensor is working properly, using the F/L Tester;
- for the presence of air penetration in the area surrounding the Lambda sensor housing;
- the injection and ignition system (in particular the state of wear of the spark plugs).
6. In the same conditions, check that the concentration of HC is less than 500 p.p.m.
7. If these values are not found, proceed to check the engine, paying special attention to:
- the valve gear timing;
- the engine compression.
NOTE
50
of the
clearances.
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Fuel system
10
HC (p.p.m.)
C O 2 (%)
0,4 + 1
< 500
> 12
< 0,35
< 90
> 13
51
Engine
Fuel system
10.
DIAGNOSIS
The system is equipped with autodiagnosis w h i c h has the function of checking any irregular state for
the following components:
Actuators
injectors
coils
fuel vapour solenoid valve
engine idle adjustment solenoid valve
electric fuel pump relay
climate control compressor relay (if fitted)
electric fan low speed relay
electric fan high speed relay (if fitted)
Sensors
engine rpm sensor
engine timing sensor
air f l o w meter
Lambda sensor
coolant temperature sensor
butterfly position sensor
vehicle speed sensor
detonation sensor
Working with the Fiat/Lancia Tester it is possible to carry out a complete fault diagnosis
of the system, consisting of three stages:
1. display of a series of functional parameters
(engine running);
2. display of the errors and their cancelling;
3. activation of several actuators (active d i agnosis).
1. Parameters displayed
The following engine parameters are displayed:
- air flow rate,
- coolant temperature,
- butterfly sensor position,
- Lambda sensor voltage,
- battery voltage,
- Lambda sensor state,
- vehicle speed,
- engine rpm,
- air flow rate/maximum f l o w rate,
- ignition advance,
52
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2. Detecting and cancelling faults
Detecting faults
This is carried out during the basic functions which manage the sensor/actuator.
Memorizing the error and structure of the errors memory
The errors are memorized in the control unit in the order in which they occur.
The following is memorized for each of them:
- the error code (component and type of error),
- the error counter,
- the time elapsed since the fault was detected,
- t w o environmental conditions (specific for each type of fault) detected at the moment of the breakdown.
Classification of the defect
If a defect is recognized for the first time and the error state persists for a certain length of time, the defect
is memorized as "permanent". If this defect later disappears, it is memorized as "not present". The classification of a defect as "permanent" activates the recovery functions: when the fault disappears, normal
opeartion is resumed.
The presence ofa "permanent" fault also involves the system failure warning light in the dashboard c o m ing on.
Frequency
counter
The counter, which goes from 0 to 127 and is activated in the case of a fault, is decreased each time the
engine is started up and the fault does not reappear: when the counter reaches zero, the fault is automatically cancelled from the memory.
Failure warning
light
The failure warning light comes on w h e n there is at least one"permanent" fault in the memory.
NOTE
53
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Index
10.
BOSCH MOTRONIC M 2.10.4 M.P.I. INTEGRATED
INJECTION/IGNITION
SYSTEM
- Introduction
- General description of the injection system
- General description of the ignition system
-2lnjection/ignition system operational diagram
- Functions of the system
SYSTEM
STRATEGIES
MANAGEMENT
4
4
4
4
4
5
5
5
6
6
6
7
7
9
10
11
12
13
Injection/ignition
gram
system wiring
dia* 14
unit/ignition
16
L o c a t i o n of i n j e c t i o n / i g n i t i o n
components
system
FUSES,
POINTS
EARTH
RELAYS
INJECTION/IGNITION
COMPONENTS
AND
16
17
SYSTEM
18
18
18
*20
22
23
Detonation sensors
Electric fuel pump
Fuel filter^
Fuel supply manifold and pressure regulator
Injectors
Butterfly casing
Butterfly valve position sensor
Engine idle speed actuator
Air temperature sensor
Flow meter
Coolant temperature sensor
24
25
26
Speedometer sensor
Phase transformer
Lambda sensor
Charcoal filter and fuel vapour cut out solenoid valve
Inertia switch
Multi-purpose valve and safety and ventilation valve
34
34
36
26
27
28
29
30
31
32
33
37
38
39
C H E C K S - A D J U S T M E N T S AND
REPAIR
O P E R A T I O N S FOR T H E BOSCH M O T R O N IC M 2.10.4 I N J E C T I O N / I G N I T I O N S Y S T E M O U T S I D E OF T H E FAULT D I A G N O S I S
WITH THE FIAT/LANCIA T E S T E R
39
39
40
40
41
42
44
44
44
DIAGIMOSIS
46
- Detecting faults
- Memorizing the error and structure of the er^
rors memory
- Classification of the defect
- Frequency counter
- Signalling a failure
- Cancelling the erro/
- Fault diagnosis with the Fiat/Lancia Tester
- List of errors
- Parameters displayed
- Active diagnosis
- Recovajy
- Permarrent memory
46
46
46
46
46
47
47
47
48
48
48
48
Marea
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Engine
Fuel system
B O S C H M O T R O N I C M 2.10.4 M . P . I . I N T E G R A T E D I N J E C T I O N / I G N I T I O N S Y S T E M
Introduction
The Bosch Motronic system fitted on the 1998 5 cylinder 20 valve engine belongs to the category of
static advance, inductive discharge, digital electronic ignition systems integrated with sequential, timed
type electronic injection systems.
This system has a single electronic control unit, one set of wiring and one set of common sensors.
Its function is to inject the exact quantity of petrol, into the inlet manifold, upstream of the inlet valves,
designed to mix with the air introduced into the cylinder so that the correct mixture strength is obtained.
The Motronic M 2.10.4 system guarantees efficient operation making it possible to achieve optimum
performance and consumption and to reduce the harmful emissions through a response in real time to
the different engine operating conditions.
G e n e r a l d e s c r i p t i o n of the injection s y s t e m
The essential conditions which must always be satisfied in the preparation of the air/fuel mixture for the
smooth running of engines with controlled ignition systems are, basically, two:
1. the metering (air/fuel ratio) should be kept as constant as possible and close to the stoichiometric
value, in order to ensure the required rapid combustion avoiding useless fuel consumption.
2. the mixture should be composed of petrol vapours atomized in the air as finely and uniformly as possible.
In the Bosch Motronic M 2.10.4 system the injector nozzles perform the task of distributing the petrol
atomizing it into minute droplets.
Since the air intake may find itself in varying conditions of absolute pressure, it is necessary to adjust the
quantity of petrol injected in order not to alter the weight ratio between the air and the petrol.
The constancy of the above ratio is achieved by varying the value of the fuel supply pressure, by means
of a regulator, according to the value of the vacuum of the air in the inlet manifold, so that the difference
between the t w o pressures is constant for all engine operating conditions.
As far as the optimum metering, on the other hand, is concerned, it is calculated after the f o l l o w i n g measurements:
- exact quantity of air drawn in by the f l o w meter (air flow meter);
- engine rotation speed through the rpm sensor;
- acceleration required by means of the butterfly valve position sensor;
- temperature of the engine coolant via the sensor on the thermostat support;
- measuring the oxygen content of the exhaust gases using the Lambda sensor.
This information is processed by a micro-calculator in the injection/ignition electronic control unit
which determines the basic injection time by means of experimentally obtained values w h i c h are stored
in a special area of the above mentioned control unit memory.
G e n e r a l d e s c r i p t i o n of t h e ignition s y s t e m
The ignition system is the static advance inductive discharge type (i.e. without a high tension distributor) w i t h power modules inside the electronic control unit.
The system has a single coil for each spark plug; the advantages of this solution are:
- less electrical overloading
- guarantee of constant discharge at each spark plug
The control unit memory contains the entire series of optimum advance values which the engine can
adopt in its operating range on the basis of the engine speed and load conditions.
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10.
DIAGRAM S H O W I N G OPERATION OF I N J E C T I O N / I G N I T I O N S Y S T E M
P4F02DJ01
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
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10.
These values have been obtained experimentally, by means of a long series of practical tests carried out
on prototypes at the test bench to identify the advances at which it is possible to achieve the best c o m promise between the conflicting requirements of maximum power and reduced consumption and harmful exhaust emissions.
The optimum advances have then been stored in the system control unit memory. During the operation
of the engine, the control unit is constantly informed of the (engine) speed and load conditions and it is
on this basis that it "selects" the optimum advance required, from its memory, for striking the spark at the
spark plug for the cylinder in the explosion stroke.
In addition, the control unit corrects this value depending on further factors such as the engine coolant
temperature, intake air temperature, detonation and butterfly valve position, to always ensure the o p t i mum ignition point.
The information required by the control unit to operate the single coils is transmitted via electrical signals emitted by the following sensors:
a. A n rpm s e n s o r which produces an alternating single phase signal whose frequency indicates the
engine speed.
b. A n air f l o w meter which, on the basis of the quantity of air drawn in by the engine, transforms this
valuer into an electrical signal, sending it to the electronic control unit.
c. A n air t e m p e r a t u r e s e n s o r w h i c h transforms the intake air temperature value into an electrical
signal, sending it to the electronic control unit.
d. T w o detonation s e n s o r s which, being located in the upper part of the cylinder block/crankcase
with one between cylinders 1 and 2 and the other between cylinders 4 and 5, allow the control unit to
recognize the cylinder w i t h detonation (or the onset of detonation) and correct the ignition advance
for the spark plug of the cylinder concerned only.
e. A butterfly valve p o s i t i o n s e n s o r which transforms the angular value of the actual butterfly into
an electrical signal allowing the control unit to recognize the minimum, partial and full load c o n d i tions.
F u n c t i o n s of the s y s t e m
In addition to electronically controlling the moment of ignition and the air f l o w rate during idling, in order to allow the engine to run smoothly when the environmental parameters and loads applied vary, the
control unit has to control and manage the injection so that the stoichiometric ratio (air/fuel) is always
within the optimum value.
The electronic control unit establishes the operating time for the injectors using a relatively simple rule
which can be summed up as follows.
Taking the physical characteristics (viscosity and density) of the fuel and the difference in pressure between the pressure of the fuel and the pressure in the inlet ducts as constant, the quantity of fuel injected
only depends on the opening time of the injector.
The functions carried out by the injection/ignition system are basically as follows:
- adjusting injection times;
- adjusting ignition advances;
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10.
SYSTEM MANAGEMENT STRATEGIES
A d j u s t m e n t of t h e injection t i m e s
Digital technology has made it possible to achieve optimum consumption and performance through the
use of programmes stored in the electronic control unit memory, which depend on the engine speed and
load conditions.
The control unit controls the injectors rapidly and accurately, calculating the opening time on the basis
of the engine load (number of revs and air f l o w rate), also taking into the battery voltage and the temperature of the engine coolant into account.
The injection is sequential and timed for each cylinder (the moment of injection is not simultaneous for
all the cylinders) and takes place corresponding to the optimum injection point.
A d j u s t i n g ignition a d v a n c e s
Thanks to a map stored in its memory, the control unit is capable of calculating the advance according to
the engine load (minimum, partial, full - on the basis of the number of revs and air flow rate), the temperature of the intake air and the temperature of the engine coolant.
It is possible to selectively delay the ignition at the desired cylinder, recognized by the combination of
values recorded by the cam angle and detonation sensors.
Controlling c o l d s t a r t i n g
In these circumstances there is a natural weakening of the mixture as a result of the poor turbulence of the
particles of fuel at low temperatures, reduced evaporation and condensation on the internal walls of the
inlet manifold, all of which is exacerbated by the increased viscosity of the lubricant oil.
The electronic control unit recognizes this condition and corrects the injection time on the basis of the
signals for the coolant temperature, intake air temperature, battery voltage and engine speed.
The ignition advance is only dependent on the number of revs and the engine coolant temperature.
During starting, the control unit carries out an initial simultaneous injection for all the injectors (full
group injection) and after recognizing the reference on the flywheel, switches to the normal sequential,
timed operation.
Whilst the engine is warming up, the electronic control unit operates the idle speed actuator which determines the quantity of air needed to ensure that the engine does not cut out.
The rotation speed is decreased proportionally as the temperature increases until the nominal value is
reached with the engine warmed up.
Controlling the e n r i c h m e n t during a c c e l e r a t i o n
When there is an acceleration request, if the variation in the air flow meter signal exceeds a pre-set i n crease, the control unit does not only adjust the injection to the new requirements, but it increases it further to reach the required number of revs quickly.
When approaching the established number of revs, the injection increase is gradually eliminated.
NOTE
The acceleration request is also detected by the potentiometer on the butterfly; this makes it
possible to ensure optimum running in the case of a failure of the air flow meter until a Service
Centre can be reached.
Engine
Fuel system
Before the idle speed is reached, the dynamics of the speed decrease are checked.
If they are above a certain value, the supply of fuel is partly re-activated on the basis of a special logic for
the engine idle speed.
Having reached this condition, the normal idle functions are re-activated and the fuel cut off during deceleration will only be re-activated when the fuel cut off threshold is exceeded to prevent the irregular
operation of the engine. The levels for restoring the fuel supply and for the fuel cut off vary according to
the temperature of the engine.
There is another fuel cut off logic, in the controlunit, which intervenes during partial deceleration, in
other words when a lesser engine load is required.
This function is only activated if the new condition lasts for a pre-set time and after the ignition advance
angle has been adapted for the new situation.
C o n t r o l l i n g a n d managing the e n g i n e idle s p e e d
The adjustment of the idle speed is controlled in all operating conditions via the idle speed actuator
which acts on the butterfly by-pass.
In addition to controlling the actual idle speed, it also carries out the functions of a supplementary air
valve and regulator for engaging the various consumers (e.g. the climate control compressor); w i t h the
butterfly in the end of travel position, the actuator, in effect, regulates the by-pass port compensating for
the power required by the consumers in order to guarantee an idle speed of 750 rpm.
The actuator for this version ensures a very responsive adjustment because the opening and the closing
of the by-pass are both controlled by magnetic windings.
In addition to the actuator, the adjustment of the ignition angle (advance) is also responsible for correcting the idle because it has a more rapid effect.
NOTE
The self-adjustment function makes it possible to eliminate all adjustments of the idle speed
recognizing the "butterfly in the end of travel" position from the butterfly casing sensor and
thereby also correcting any possible wear which, in time, will become apparent through the
closing of the butterfly.
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Fuel system
Fuel v a p o u r r e c o v e r y
The fuel vapours (pollutant according to the regulations) are sent to an active charcoal filter and from
there to the engine where they are burnt; this takes place by means of a solenoid valve w h i c h is only o p erated by the control unit when the engine load conditions allow the correct combustion without the
operation of the engine being "disturbed": in effect, the control unit compensates for this quantity of
petrol by reducing the supply to the injectors.
C o n t r o l of the detonation
This function has the task of detecting the presence of detonation (engine knock) by processing the signal coming from the appropriate sensor. The control unit constantly compares the signals coming from
the sensors which a threshold value which is, in turn, constantly updated, in order to take into account
the background noise and the ageing of the engine.
The control unit is therefore capable of identifying detonation (or the onset of detonation) and reduces
the ignition advance (from 3 up to a maximum of 9.7), until the phenomenon disappears. Subsequently, the advance is gradually restored to the basic value.
In acceleration conditions, a higher level is used, to take into account the increased noise of the engine
in these circumstances. The detonation control strategy is also equipped w i t h a self-adjustment function w h i c h memorizes the reductions in the advance which should be constantly repeated, to adapt the
map to the different conditions in which the engine operates.
Controlling the p h a s e t r a n s f o r m e r
The control unit controls the phase transformer solenoid valve according to the value of the engine load.
At coolant temperatures in excess of 40 C and when the engine speed is above idling and below 4,800
rpm w i t h a butterfly angle greater than around 8, the control unit sends a signal to the solenoid valve
which, when activated, allows the transformer to decrease the timing diagram for the inlet stroke by 18.
When the engine speed is equivalent to idling or exceeds 4,800 rpm, the control unit de-activates the
solenoid valve and the transformer returns the inlet timing to the previous basic values.
Obviously, the control of the phase transformer operates w i t h a hysteris ranges, i.e. the solenoid valve
activation threshold is always higher than the de-activation level; this is designed to avoid balance c o n ditions and consequently too rapid a succession of shifts from one timing diagram to another with obvious operating problems.
C o n n e c t i o n w i t h t h e c l i m a t e control s y s t e m
When the climate control is switched on, the compressor absorbs power from the engine which, w h e n
idling, will tend to cut out. In order to prevent this problem, the control unit adjusts the air f l o w rate to
the new power requirements, operating the appropriate actuator (the adjustment also takes place in usage conditions to maintain optimum driveability). Another function of this system is that of momentarily
interrupting the supply to the compressor if there is a high power request by the engine (strong acceleration).
S e l f - a d j u s t m e n t of t h e s y s t e m
The control unit is equipped w i t h a self-adjustment function which has the task of recognizing the
changes which take place in the engine due to bedding in over a period of time and the ageing of both
the components and the engine itself.
These changes are memorized in the form of modifications to the basic map and are designed to adjust
the operation of the system to the gradual alterations of the engine and the components compared w i t h
when they were new.
Marea-Marea Weekend
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Engine
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10.
This adjustment function also makes it possible to compensate for the inevitable differences (due to production tolerances) w i t h components w h i c h may have been replaced. This gives all vehicles the opportunity for maximum results without special regulation and control operations.
The self-adjustment parameters are lost if the control unit is disconnected.
C o n n e c t i o n w i t h e n g i n e immobilizer d e v i c e ( F i a t C O D E )
In order to improve protection against theft attempts, the vehicle has been fitted with an engine i m m o b i lizer system (Fiat CODE) which only allows the injection/ignition control unit to be activated by means
of an electronic code.
Each time the key is turned to the OFF position, the Fiat CODE system completely de-activates the injection/ignition control unit.
When the key is turned from OFF to O N , the following operations take place in the order given:
1. The injection/ignition control unit sends the Fiat CODE control unit a request for the secret code in
order to de-activate the immobilizing of the functions.
2. The Fiat CODE control unit responds by only sending the secret code after it has, in turn, received the
recognition code, transmitted by the ignition key, which contains a special transponder.
3. The recognition of the secret code allows the de-activation of the functions lock and the injection/ignition control unit can activate the normal system management programme.
A special t w o way serial line allows the exchange of data between the injection/ignition control unit
and the Fiat CODE control unit.
If there is a failure of the Fiat CODE system it is still possible to start up the vehicle using the special
emergency procedure.
NOTE
Given the presence of the Fiat CODE system DO NOT CARRY OUT during the fault diagnosis
and Ior operating checks, any tests using another injection/ignition
control unit. In such a case,
the Fiat CODE control unit would transfer the (unrecognized)
recognition code to the test control unit, which would render it unfit for use on any other vehicles.
Autodiagnosis
The Motronic M 2.10.4 injection/ignition system is also equipped w i t h an " a u t o d i a g n o s i c " function
which memorizes any faults at the sensors and actuators, making it easier to detect and correct them.
Any fault is signalled by the appropriate failure warning light in the instrument panel.
Engine
Marea-Marea Weekend
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Fuel system
10.
DIAGRAM SHOWING INFORMATION E N T E R I N G / L E A V I N G T H E I N J E C T I O N / I G N I T I O N S Y S T E M CONTROL UNIT AND S E N S O R S / A C T U A T O R S
P4F08DJ01
Components key
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Engine
Marea-Marea Weekend mi
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Fuel system
10.
D I A G R A M SHOWING FUEL SUPPLY CIRCUIT
NOTE
1.
2.
3.
4.
5
5.
6.
7.
8.
9.
10.
11.
The supply of fuel is obtained by means of an electric pump immersed in the tank which draws in the fuel
and sends it to the filter and then to the injectors.
The fuel supply pressure to the injectors is kept constant and proportional to the pressure value in the i n let manifold by the pressure regulator w h i c h acts on the fuel f l o w rate so that the rise in pressure at the
injectors is kept constant.
The excess fuel flows from the pressure regulator, not under pressure, to the tank.
Engine
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io!
P4F10DJ01
1.
2.
3.
4.
5.
10
Inlet manifold
Engine idle speed actuator
Butterfly casing
Butterfly valve positive sensor
Air temperature sensor
6.
7.
8.
9.
10.
Flow meter
Air filter
Lower resonator
Upper resonator
Inlet vent
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Engine
Fuel system
10.
DIAGRAM SHOWING F U E L ANTI-EVAPORATION C I R C U I T
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Multi-purpose valve
Float valves
Tank
Inlet manifold
Fuel vapour inlet
The anti-evaporation system is designed to prevent the fuel vapours, made up of the lightest particles of
hydrocarbons w h i c h basically form in the tank, from being discharged into the atmosphere.
The system operates, above all, at high outside temperatures when the temperature of the fuel increases
and consequently the tendency to evaporation also increases; in this situation there is an increase in the
pressure inside the tank (8).
In particular, w i t h the tank (8) full and the vehicle stationary, the t w o float valves (7) remain open, as
they are positioned higher than the breather pipe, and therefore all the vapours to reach the separator (5)
where they condense and mainly remain in the tank ( 8 ) .
On the other hand, in the case of a great deal of splashing during driving or the vehicle overturning, the
valves (7) close, preventing the escape of fuel.
If the pressure inside the tank reaches 3 0 - 4 0 mbar, the multi-purpose valve (6) opens and the fuel
vapours reach the charcoal filter (2). The valve (6) also allows an intake of air into the tank through the
charcoal filter if it has been necessary following the decrease in the level of the fuel and the consequent
vacuum which is created inside the tank.
When the engine is running, the control unit (3) operates the charcoal filter solenoid valve (1) w h i c h allows the intake of vapours by the engine and the consequent scavenging of the charcoal filter.
If as the result of a malfunction of a certain component, the pressure inside the tank increases dangerously, the safety valve located in the cap (4) allows the pressure to be discharged outwards. If necessary, this valve can open in the opposite direction, to ventilate the tank and prevent the vacuum from
reaching excessive values.
11
Engine
Fuel system
10.
S Y S T E M FOR RECIRCULATING GASES COMING FROM THE ENGINE CRANKCASE
The system controls the emissions, from the engine cranckcase, of breather gases made up of air/petrol
mixtures and the burnt gases which escape from the piston seals, as well as the lubricant oil vapours, recirculating them to the inlet.
The breather gases, directed by the special partitions, rise by the engine oil filler, then pass through the
coils ( 7 ) , under the tappet cover, where they lose part of the oil w h i c h they contain which returns to the
camshafts through the pipe (6), in the form of droplets.
The pipe (6) is a suitable shape to prevent the breather gases escaping and to only allow the recirculation of the droplets of oil.
The remaining gases come out of the intake (5) w h i c h contains a spark-out (4) (to prevent combustion
due to flame returns from the butterfly casing.
From the intake (5) the breather gases reach the T connector ( 3 ) .
With the butterfly open, the gases f l o w through the inlets (1) and (2) and are drawn into the manifold.
With the butterfly closed, the vacuum in the inlet manifold draws in the gases through the inlet (1)
which contains a PCV valve (8) (Positive Crank Ventilation) which shuttersthe inlet.
The PCV valve can, in effect, be modulated and the quantity of gases which pass through is proportional
to the vacuum in the inlet manifold.
When the butterfly valve is completely open (condition A ) , the vacuum inside the inlet manifold is minimal , the spring (10) is completely extended and the PCV valve allows the maximum f l o w of breather
gases.
Viceversa, w i t h the butterfly completely closed (condition B), the vacuum inside the manifold is maximum, w h i c h causes the movement of the piston (9) w h i c h shutters the flow of breather gases inside the
PCV valve thereby restricting the intake into the manifold of the actual gases.
12
Engine
Fuel system
10.
E N G I N E E X H A U S T A S S E M B L Y DIAGRAM
1.
2.
3.
4.
Exhaust manifold
Lambda sensor
Catalytic silencer
Silencers
The control of the mixture strength, w h i c h is the closed loop type, is activated by the Lambda sensor
w h i c h detects the oxygen content in the exhaust gases, upstream of the catalytic silencer.
The Lambda sensor measurements allowthe electronic control unit to constantly correct the quantity of
petrol injected keeping the air/fuel ratio constant.
In this way the harmful exhaust emissions are controlled and the three way catalytic converter (catalytic
silencer) completes this task.
The efficient operation of the catalytic silencer and consequently containing the toxic exhaust gases depends on the air/fuel ratio w i t h which the engine is supplied.
The three way type catalytic converter makes it possible to simultaneously keep down the levels of the
three pollutant gases present in the exhaust gases: unburnt hydrocarbons (HC), carbon monoxide
(CO), nitrous oxides (NOx).
T w o types of chemical reaction take place inside the converter:
- oxidation of the CO and the HC, converted into carbon dioxide ( C 0 2 ) and water ( H 2 0 )
- reduction of the NOx, converted into Nitrogen (N2).
The following will put the catalytic converter rapidly out of action and render it irreparable:
the presence of lead in the petrol, which lowers the degree of conversion to such levels as to make its
presence in the system superfluous;
the presence of unburnt petrol in the converter: in effect, a f l o w of petrol for 30 seconds in an ambient of
800 (the temperature inside the silencer) is sufficient to cause the catalyzer to melt and break.
It is absolutely vital for the ignition system to be working perfectly, therefore, the spark plug leads should
not be disconnected with the engine running, for any reason, and, in the case of tests, the catalytic c o n verter should be replaced w i t h an equivalent section of pipe.
13
Engine
Marea-Marea Weekend
ft**
Fuel system
10.
I N J E C T I O N / I G N I T I O N S Y S T E M WIRING DIAGRAM
P4F14DJ01
14
Engine
Fuel system
10.
Connection between control unit/ignition coils and injectors
Key:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
15
Marea-Marea Weekend
iP
Engine
Fuel system
10.
LOCATION OF I N J E C T I O N / I G N I T I O N S Y S T E M C O M P O N E N T S
P4F16DJ01
Key
1. Charcoal filter
6. Injectors
7. Rpm sensor
16
Engine
Fuel system
10.
F U S E S , R E L A Y S AND E A R T H P O I N T S
1. General protective fuse
The general protective fuse (EFI-30A) for the
injection/ignition system (1) is housed inside
a container; to gain access, remove the cover
releasing it from the side clips.
under
the
P4F16DJ04
17
Engine
Marea-Marea Weekend
ftsov
Fuel system
10.
INJECTION/IGNITION S Y S T E M COMPONENTS
The injection/ignition system is basically made up of a set of wiring, an electronic control unit and the
following sensors/actuators:
Sensors
Actuators
- Speedometer sensor
- Detonation sensors
- Timing sensor
- Injectors
- Ignition coils
- Sparkplugs
18
Marea-Marea Weekend
ft**
Engine
Fuel system
10.
I D E N T I F I C A T I O N O F C O N N E C T I O N S AT T H E CONTROL UNIT (PIN-OUT)
P4F19DJ01
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
Detonation sensor
Supply for various sensors
Not connected
Climate control activation go ahead relay
Not connected
Injector for cylinder N5
Injector for cylinder N4
I.E. system relay
Supply ( + 3 0 )
Ignition coil for cylinder N5
Ignition coil for cylinder N3
Three stage pressure switch
Not connected
Engine earth
Not connected
Not connected
Coolant temperature sensor
Not connected
Fiat CODE control unit
Rpm and TDC sensor
Rpm and TDC sensor
Not connected
I.E. system failure warning light
Phase transformer solenoid valve relay
Butterfly valve position sensor
Intake air temperature sensor
Diagnostic socket for Fiat/Lancia Tester
19
Engine
Fuel system
Marea-Marea Weekend ft 2 *
Ho.
REMOVING-REFITTING
IC CONTROL UNIT
ELECTRON-
The static advance electronic ignition has been improved w i t h a single coil for each spark plug; in addition, the power modules are housed inside the control unit; in practical terms this solution dispsenses
w i t h the H.T. circuit, improving reliability and safety still further and reducing the risk of interference dur
to high tension leads and connections.
A normal coil is involved w h i c h increaess the voltage of the impulse sent to the spark plugs: each individual coil, located in the cylinder head, directly supplies one spark plug without intermediate H.T.
leads.
20
Marea-Marea Weekend ft 2 *
Engine
Fuel system
10.
I
Electrical features
Primary winding inductance
Primary winding resistance
Interference resistance
3 mH
0,4 Q
1 KQ
Control signal
Primary winding
Secondary winding
Supply via the ignition switch
Single coil
Electronic control unit
Spark plug
1 2
Wiring connector
1 20 39 21 38
- 27
21
Engine
Fuel system
10.
T I M I N G S E N S O R (0.232.101.026)
The Bosch Motronic M 2.10.4 system adopts
a sequential, timed injection system, in other
words the injection of the fuel takes place in
order for each cylinder during the inlet stroke.
In order to achieve this, in addition to the rpm
and TDC signal, the electronic control unit
also uses a timing signal to determine the injection point.
The signal sent to the control unit is produced by a Hall effect sensor fitted by the exhaust side camshaft drive pulley.
O p e r a t i n g principle
A semi-conductor layer w i t h a current passing through it, immersed in a normal magnetic field normale (lines of force perpendicular to the direction of the current) produces a difference
in power, k n o w n as " H A L L " voltage.
If the intensity of the current remains constant, then the voltage
produced only depends on the intensity of the magnetic field; if
the magnetic field simply varies periodically this is sufficient to
produce a modulated electric signal whose frequency is proportional to the speed at w h i c h themagnetic field changes.
To achieve this change, a metal ring (inner part of the pulley) fitted with an opening, passes through the sensor. As it moves, the
metal part of the ring covers the sensor, locking the magnetic
field with a consequently low output signal; viceversa, corresponding to the opening and in the presence of the magnetic
field, the sensor produces a high signal.
As a result, the high signal alternates w i t h the l o w signal once every two revolutins of the engine and
namely w h e n cylinder N1 is 78 before TDC.
This signal, together w i t h the rpm and TDC signal, allows the control unit to recognize the cylinders and
determine the point of injection. At each revolution of the engine the control unit checks that the timing
signal is present; if this signal is missing for t w o consecutive revolutions, then the control unit signals
this failure (warning light in the panel comes on) and the engine cannot be started up.
Wiring c o n n e c t o r
The numbers indicate the
control unit pins
22
Engine
Fuel system
10.
RPM
AND
TDC
SENSOR
(0.281.002.102)
The sensor, which is designed to detect the
number of revs and the TDC, is the inductive
type, i.e. it operates by varying the magnetic
field produced by the passing of the teeth on
a flywheel which is positioned inside the
crankcase and fixed to the rear c o u n ter-weight of the crankshaft. In this w a y the
sensor is fixed to the crankcase and the
checks and adjustments to the gap and the
angular position are no longer required.
The teeth which pass in front of the sensor,
alter the gap between the pulley and the sensor; the dispersed flux, which varies as a c o n sequence, creates an alternating voltage, the
extent of which depends on the number of
revs.
The flywheel has 58 teeth plus a space equivalent to the size of the t w o missing teeth.
The reference defined by the space for the
t w o missing teeth constitutes the basis for
identifying the point of synchronism ( T D C ) .
1. Rpm sensor
2. Toothed pulley
For a more detailed description of the operating principle, refer to the Fuel System section
for the 1581 16V version.
3. Engine flywheel
Removing-refitting
Position the vehicle on a lift, then, w o r k i n g
from the lower part of the vehicle:
- Disconnect the electrical connector;
- undo the bolt fixing the sensor and remove
it from its housing.
Wiring connector
The sensor is connected to the electronic
control unit (pins 48 and 49) by twisted cables covered in an outer casing screened from
interference connected to earth.
NOTE
corre-
23
Engine
Fuel system
10.
C h e c k i n g t h e gap
DETONATION SENSORS
(0.261.231.095)
Wiring connector
The numbers indicate the
control unit pins.
corresponding
Recovery
The ignition advance is calculated according to the temperature of the engine coolant and the temperature of the intake air.
24
Marea-Marea Weekend ft a *
Engine
Fuel system
10.
E L E C T R I C F U E L P U M P (0.580.453.408)
The electric fuel pump is located inside the tank, housed in a support which also includes the level
gauge.
The electric pump is the type with cells w i t h rollers, operated by an electric motor energized by permanent magnets, immersed in the fuel.
A disc rotor (1) located eccentrically in the pump casing contains the cells arranged along its circumference and the metal rollers (2) which are thrust by centrifugal force against the outer track w i t h the effect
of guaranteeing the hydraulic seal.
C r o s s s e c t i o n of e l e c t r i c p u m p
Longitudinal s e c t i o n of e l e c t r i c p u m p
The fuel flows into the empty spaces and is compressed in the supply duct ( 3 ) . A one-way valve (4)
prevents the supply pipe from being emptied when the engine is switched off.
An excess pressure valve (5) short circuits the supply in the inlet chamber (6) when the pressure exceeds 7.5 bar.
The electric pump starts to operate when the ignition switch is turned to the ON position. When the
starting stage is over, the electric pump continues to operate w i t h the ignition switch in the ON position,
unless the engine speed goes below 225 rpm or the ignition switch is turned to the OFF position.
If the engine cuts out for any reason, w i t h the ignition switch in the ON position, the operation of the
pump is automatically interrupted, w h i c h constitutes a safety feature.
D i a g r a m m a t i c longitudinal s e c t i o n
and external v i e w of t h e e l e c t r i c f u el pump
NOTE
25
Engine
Fuel system
10.
F U E L F I L T E R (A.450.024.262)
The fuel filter is fitted under the floor panel, on the fuel supply pipe. For removing-refitting procedure,
refer to the Fuel System section for the 1581 16V version.
F U E L S U P P L Y MANIFOLD AND P R E S S U R E REGULATOR
The fuel supply manifold, w h i c h has the function of distributing the actual fuel to the injectors, is made
from steel and has seats for the injectors and the pressure regulator and fuel inlet and outlet connectors.
The fuel manifold is fixed to the inlet manifold by four brackets.
The pressure regulator is a necessary element in keeping the rise in pressure at the injectors constant.
It is a differential, diaphragm type device, regulated at a pressure of around 3 bar.
The pressure regulator it is composed of a metal casing w h i c h houses a moving element made up of a
metal casing (8) and a diaphragm (4) loaded by a spring ( 5 ) . When the pre-set force, w h i c h is made up
of the vacuum at the opposite part of the diaphramg and the spring (5) loading, is exceeded, the fuel
driven by the pump causes a valve (7) to open w h i c h allows the excess fuel to f l o w through the pipe (2)
to the tank.
The chamber housing the spring is in contact w i t h the engine inlet duct (6) (vacuum signal). The difference between the pressure of the fuel and the vacuum in the inlet manifold is kept constant in all engine
operating conditions.
P4F26DJ01
1.
2.
3.
4.
26
5.
6.
7.
8.
Adjustment spring
Connection to inlet manifold
Flow valve
Metal casing
Marea-Marea Weekend
fli**
Engine
Fuel system
10.
I N J E C T O R S (0.280.150.443)
The t w i n jet type injectors are fitted on the inlet manifolds, immediately before the inlet valve.
These injectors are specific to engines w i t h 4 valves per cylinder, in effect making it possible to direct the
jets towardsthe t w o inlet valves.
The jets of fuel at a differential pressureof 3 bar w h i c h come out of the injector are instantly atomized
forming t w o cones of around 10 each.
The operation of the injectors is the sequential, timed)) type, i.e. the five injectors are controlled according to the inlet sequence for the engine cylinders whilst the supply can already start for each cylinder
during the expansion stroke until the inlet stroke has already commenced.
The injectors are fixed by the fuel manifold which presses against them in the housings in the inlet manifolds. They are also anchored to the fuel manifold by means of safetyclips. T w o rubber seals (10) and
(11) ensure the seal at the inlet manifold and at the fuel manifold.
1.
2.
3.
4.
Injector casing
Needle
Magnetic core
Coil spring
5.
6.
7.
8.
Winding
Injector nozzle
Adjustable spring
Fuel filter
Wiring connector
NOTE
27
Engine
Marea-Marea Weekend
!jpi 2<>v
Fuel system
10.
BUTTERFLY CASING
The quantity of air drawn in is determined by the opening of the butterfly situated at the opening of the
inlet manifold. The butterfly casing is fixed to the inlet manifold by four bolts; the butterfly is operated
by the accelerator pedal by means of levers which produce an opening system where small butterfly
opening angles correspond to the pedal being slightly depressed and large opening angles to the pedal
being very depressed.
The air required to sustain the engine when idling and w i t h loads applied with the butterfly valve closed,
is regulated and by-passed by the engine idle actuator only.
A special screw ( 1 ) , allows the correct adjustment of the butterfly closure to prevent sticking w i t h the
surrounding duct; this screw is not used for adjusting the idle as it is adjusted by fluxing during production and should not be tampered with any under circumstances.
The f l o w of engine coolant arriving from the thermostat through the inlet and outlet ducts (3) and (5) in
the area of the butterfly valve has the task of preventing any condensation and the formation of ice
which could be produced in certain external conditions of low temperature and/or high humidity.
The gases escaping from the engine crankcase are drawn into the inlet manifold downstream of the butterfly through the PCV valve (4).
1.
2.
3.
4.
5.
6.
7.
28
Engine
Fuel system
10.
B U T T E R F L Y VALVE POSITION S E N S O R (0.280.122.001)
The sensor is composed of a potentiometer
inserted in a plastic container w i t h t w o fins
w h i c h contain t w o NOT SLOTTED openings
w i t h the function of ensuring the anchorage
and the positioning of the sensor in relation
to the butterfly valve. A three pin socket in
the container ensures the electrical connection w i t h the electronic control unit.
During operation, the injection/ignition c o n trol unit provides the potentiometer w i t h a
supply of 5 Volt at pins (1) and ( 2 ) .
The voltage, at pin 3, is inversely proportional
to the opening position of the butterfly valve.
On the basis of the voltage sent by 3, the
control unit recognizes the butterfly valve
opening condition and suitably corrects the
mixture strength.
With the butterfly closed, an electrical voltage signal of around 0.5 Volt reaches the
control unit which recognizes the idle and
cut off condition (distinguishing between
them on the basis of the engine speed).
The potentiometer automatically recognizes
the butterfly end of travel position during
idling through a "self-adjustment" f u n c t i o n .
This dispenses with the adjustment operations and makes it possible, at the same time,
to also f o l l o w up any wear w h i c h may occur
for the butterfly closure position.
Recovery
If there is a problem w i t h the sensor, the control unit establishes the following parameters:
Butterfly opening angle = 10
idle state: air flow rate < 12.8 m 3 / h ;
exit from idle state: air f l o w rate > 8 m 3 / h ;
full load state: engine load > 6,5 ms and simultaneously > 2000 RPM;
exit from full load state: engine load < 6,5 ms or < 2000 RPM.
Additional provisions
The strategies of gradually decreasing the engine idle speed (dashpot) and the self-adjustment of the
idle are stopped.
~
l
Wiring connector
"I
1-1
1 2 3
i
12
53
30
P4F29DJ02
NOTE
29
Engine
Marea-Marea Weekend
ft**
Fuel system
10.
ENGINE
IDLE
(0.280.140.553)
P4F30DJ01
SPEED
ACTUATOR
Recovery
If there is a problem with the actuator, the control unit activates different recovery strategies according
to the butterfly valve opening angle.
Recovery
1: valve in recovery position, close to the idle air flow rate for:
1"
_
rl
22
Wiring connector
4
6
+30
NOTE
corre-
P4F30DJ02
30
Marea-Marea Weekend ft 2
Engine
0 V
Fuel system
10.
AIR
TEMPERATURE
(0.280.130.073)
SENSOR
Recovery
If, 3 minutes after starting, the control unit
detects a temperature (T air) of < -35 C o
r > 130 C for 30 seconds, then T air = 20.4
C is assumed as a fixed parameter
Additional provisions
Immobilizing of the self-adjustment of the
mixture strength at current values.
Wiring connector
NOTE
corre-
F L O W M E T E R (0.280.217.111)
The air flow meter is the "heated f i l m " type;
the operating principle is based on a heated
diaphragm w h i c h is placed in a measuring
duct through w h i c h the inlet air entering the
engine flows.
The film diaphragm is kept at a constant t e m perature ( ~ 1 2 0 C above the temperature of
the air) by the heating resistance in contact
w i t h it.
P4F31DJ03
2. Flow meter
31
Engine
Marea-Marea Weekend
ft**
Fuel system
10.
1. Connector
2. Measuring duct
3. Hot film sensor
A = Air intake
NOTE
This flow meter measures the mass of air (and not the volume)
problems of temperature, altitude, pressure etc.
directly thereby
eliminating
C4
1 2
RS
Additional provisions
Immobilizing of self-adjustment of mixture
and idle at current values.
Wiring connector
NOTE
32
corre-
Engine
Fuel system
10.
COOLANT TEMPERATURE SENSOR
(0.280.130.026)
This sensor is fitted close to the themostat
casing w i t h the sensitive element in contact
w i t h the coolant. It is made up of a brass casing which protects the actual resistive element comprising an NTC (Negative Temperature Coefficient) thermistor, where the
electrical resistance of the sensor decreases
as the temperature increases).
It provides the control unit w i t h a voltage
w h i c h varies according to the temperature of
the engine, in order to correct the information
concerning the air flow rate from the air f l o w
meter so that, on the basis of the signal received by the sensor, the control unit can o p erate the fuel injection for a longer time,
thereby providing the necessary enrichment
when the engine is running at temperatures
below the operating temperature.
Recovery
If T air < 19.9 C, T engine = T air is assumed
for three minutes, then T engine is assumed
as = 80 "C. If T air ^ 19.9 C, then T engine is
assumed as 80 C immediately.
Q
50000'
40000
30000'
Additional provisions
Immobilizing the self-adjustment of the mixture and the idle at current values.
SOOO
4000
3000
2000
Wiring connector
The numbers indicate
control unit pins
500'
400
300
200
-40-30-20-10 0
40
60
80
100 120
the
corresponding
Of-
P4F33DJ04
33
Engine
Fuel system
10.
SPEEDOMETER SENSOR
The speedometer sensor (vehicle speed sensor) it is composed of Hall effect sensor located at the differential outlet.
The sensor transmits a signal to the control
unit whose frequency varies according to the
speed of the vehicle.
The control unit uses this information to i m prove the management of the engine idle a d justment actuator and for the CUT-OFF strategy.
The speedometer sensor signal is also
processed to calculate and memorize
the mileage covered in the control
unit; this information can be read using the Fiat/Lancia
Tester.
PHASE T R A N S F O R M E R
In order to achieve a good compromise between a high performance in terms of power at high speeds
and good torque at l o w speeds, this engine is fitted w i t h a phase transformer (electronic operation and
hydraulic implementation) for the inlet camshaft.
This device makes it possible to alter the timing diagram (inlet stroke) depending on the load required by
the engine; this parameter is processed by the MOTRONIC control unit on the basis of the electric signals received by the air f l o w meter and the rpm sensor, and sent as a command to the phase transformer
solenoid valve.
In terms of construction, the device is made up of a main assembly fitted on the inlet camshaft which has
the task of varying the angular position of the shaft in relation to the drive pulley.
There is also an implementation valve, operated by a solenoid valve, both on the inlet manifold and hydraulically connected to the main assembly through suitable ducts.
The operating principle is as follows:
- with the temperature of the coolant below 40 C and when the engine is idling or the speed exceeds
4800 rpm, the solenoid valve (1) is de-energized, therefore the valve chest (2) thrust by the opposing
spring (3) remains raised not allowing the oil arriving from the duct (A) to reach the transformer.
In this case the inlet valve timing remains unaltered.
With the coolant temperature above 40 C and w i t h the engine speed above idling and below 4800
rpm w i t h the butterfly angle more than around 8, the solenoid valve (1) is energized, pushing the
valve chest (2) downwards. In this position the oil coming from the duct ( A ) , enters the piston chamber and from there duct (C) inside the latter through a special port.
The oil can only leave the above duct through the upper port (in contact w i t h the oil supply duct (D)
to the transformer) because as the valve chest (2) is lowered the lower port is not in contact with the
exhaust duct (E).
The oil reaches the chamber (G) through ducts (D) and (F), moving the piston (4) axially towards the
engine which, having helical teeth on the outside is forced to rotate in a clockwise direction (as seen
from the timing side) as a result of this axial movement.
Its rotation is transmitted, by means of straight toothed splining to the pinion (5) which, bolted onto
the threaded element of the camshaft (6), transmits the rotation of the shaft, thereby altering the t i m ing of the inlet valves during the advance by 9.
When the solenoid valve is de-energized, the valve chest (2) returns to the initial position, interrupting
the f l o w of oil under pressure in the chamber ( G ) , but allowing the return of the oil to the exhaust,
thanks to the thrust of the opposing spring ( 7 ) .
34
Marea-Marea Weekend
Engine
ft 20v
Fuel system
10.
A n additional duct ensures the lubrication of the camshaft bearing even when the device is not activated.
The oil which seeps out and reaches the solenoid valve chamber (H) is dispelled through the drainage
duct (E).
Recovery
If there is a problem with the solenoid valve, the final operating stage (driver) in the control unit is
de-activated.
1.
2.
3.
4.
5.
6.
7.
Solenoid valve
Valve chest
Valve chest spring
Piston
Pinion
Camshaft element
Piston spring
8.
9.
10.
11.
12.
Battery
Injection/ignition system relay
Phase transformer solenoid valve relay feed
Injection/ignition control unit
Ignition switch
35
Engine
Marea-Marea Weekend
ft 20V
Fuel system
10.
LAMBDA S E N S O R (0.258.003.466)
To respond to the strict legislation concerning harmful exhaust emissions for internal
combustion engines, which require increasingly precise metering of the air/fuel mixture,
the vehicle is equipped with a heated Lambda sensor with four wires which measure the
oxygen content of the exhaust gases. For a
complete description of the Lambda sensor,
refer to the Fuel System section for the 1581
16V version.
Removing-refitting
- Position the vehicle on a lift.
- Disconnect the negative lead from the battery.
- Disconnect the electrical connection under
the butterfly casing.
- Raise the vehicle.
- Remove the Lambda sensor from its housing.
- During tightening, do not exert any force
on the component or else it w i l l be irreparably damaged.
Recovery
The Lambda information is ignored (open
loop) for sensor voltages > 1.099 V or between 0.400 and 0.518 V for more than 2.55 s.
Immobilizing self-adjustment of mixture
strength for sensor voltage < 0.0879 V for
more than 2.55 s.
Open loop and maximum Lambda integrator
value (FR) the last good reading for the sensor voltage < 0.0879 V and simultaneously
FR = 1.4.
Immobilizing of FR at limit value reached for
FR > 1.25 or < 0.75 for at least 15 s.
Connettore cablaggio
The numbers indicate the corresponding
control unit pins.
36
Engine
Fuel system
10.
Checking the resistance
The resistance of the sensor heater can be
measured by disconnecting the connector
and connecting an ohmmeter as s h o w n in
the diagram.
Resistance: 4.5 0.5 ohm at 20 C
C H A R C O A L F I L T E R AND F U E L V A P O U R
CUT OUT SOLENOID VALVE
The charcoal filter and the solenoid valve are
located inthe right wheel arch.
For the description of the charcoal filter refer
to the Fuel System section for the 1 581 16V
version.
1. Vapour cut out solenoid valve
2. Charcoal filter
Vapour
cut
out
(0.280.142.300)
solenoid
valve
1.
2.
3.
4.
5.
6.
7.
Copyright by Fiat Auto
Inlet union
One-way valve
Spring
Shutter
Outlet aperture
Solenoid valve
Outlet union
37
Engine
Marea-Marea Weekend
ftaov
Fuel system
10.
Removing-refitting
The procedure is valid for both the charcoal filter and the vapour cut out solenoid valve.
- Raise the vehicle;
- remove the right front wheel;
- remove the right front wheel arch rear lining;
- undo the bolt fixing the component concerned to the mounting bracket;
- remove the electrical connection and the pipes connected;
- remove the component concerned.
Recovery
Immobilizing of the self-adjustment of the mixture strength.
Immobilizing of the self-adjustment of the fuel anti-evaporation system.
Wiring connector
NOTE
corre-
INERTIA SWITCH
In order to improve the degree of safety for
the occupants of the vehicle in the case of an
impact, the vehicle is equipped w i t h an inertia switch located inside the passenger c o m partment, under the driver's seat.
This sensor reduces the risk of fire (as a result
of fuel escaping from the injection system) by
de-activating the electric pump which supplies the injection circuit.
For the complete description and the removing-refitting procedure, refer to the Fuel System section for the 1581 16V engine.
38
Marea-Marea Weekend
Engine
igluov
Fuel system
10.
M U L T I - P U R P O S E V A L V E AND S A F E T Y AND V E N T I L A T I O N V A L V E
These valves belong to the anti-evaporation and fuel vapour recirculation system. For a description of
them, refer to the Fuel System section for the 1581 16V version.
C H E C K S - A D J U S T M E N T S A N D R E P A I R O P E R A T I O N S T O T H E BOSCH MOTOIMIC M
2.10.4 I N J E C T I O N / I G N I T I O N S Y S T E M O U T S I D E O F T H E F A U L T D I A G N O S I S W I T H
THE FIAT/LANCIA TESTER
THE FOLLOWING
PRECAUTIONS
SHOULD BE OBSERVED
CLE EQUIPPED
WITH A MOTRONIC INJECTION/IGNITION
WHEN WORKING
SYSTEM:
ON A
- do not start up the engine when the terminals for the electrical connections are badly
ed or slack at the battery poles;
- do not use a rapid battery charger to start up the
- never disconnect
VEHI-
connect-
engine;
running;
network;
- if the vehicle is going in the drying oven after painting, at temperatures in excess of 80 "C, then
the injection/ignition
electronic control unit must be removed first;
- do not attach or disconnect
switch in the ON position;
- always disconnect
cle.
with the
ignition
the negative battery lead before carrying out electrical welds on the vehi-
Remember that this system has a memory which is always supplied (stand-by) where the self
-adjustment values are memorized. The operation of disconnecting the battery involves the loss
of this information which can only be acquired again after a certain distance so this operation
should be limited as far as possible.
P4F39DJ01
39
Engine
Marea-Marea Weekend
ft 20v
Fuel system
10.
REMOVING-REFITTING
CABLE
ACCELERATOR
40
Marea-Marea Weekend
ft**
Engine
Fuel system
10.
REMOVING-REFITTING F U E L MANIFOLD COMPLETE WITH INJECTORS AND PRESSURE REGULATOR
Proceed as follows:
- Disconnect the fuel supply pipe (5) from the
connector.
- Loosen the band for the return pipe and disconnect the flexible rubber pipe from the rigid
pipe.
- Disconnect the electrical connectors from the
injectors.
- Undo the fixing bolts (7).
- Extract the injector manifold assembly.
- To remove the injectors from the fuel manifold, remove the clip (9).
1.
2.
3.
4.
5.
6.
7.
8.
9.
P4F41 D J 0 2
Fuel manifold
Fuel pressure regulator
Injectors
Vaccum intake from engine inlet manifold
Fuel supply pipe from electric pump
Fuel return pipe to the tank
Bolts fixing fuel manifold and injectors
Pressure regulator clip on fuel manifold
Injector clip on fuel manifold
41
Engine
Fuel system
10.
C H E C K S ON T H E F U E L S U P P L Y CIRCUIT
1st T e s t
C h e c k i n g fuel regulation p r e s s u r e
Disconnect the fuel supply pipe to the
manifold from theconnector shown by the
arrow;
Position pressure gauge 1895890000 with
both taps A and B open between the end of
the disconnected pipe and the fuel manifold;
\;^J.'
iFlllAlTl
- operate the electric fuel pump with the engine switched off using the Fiat/Lancia
Tester activating the "fuel pump" test;
- the pressure reading on the gauge should
stabilize in these test conditions at around
3 bar. If the pressure is too low, carry out
the 2nd test.
2nd T e s t
C h e c k i n g m a x i m u m fuel s u p p l y p r e s s u r e (or e l e c t r i c p u m p e f f i c i e n c y )
The same connections as for the previous test
apply.
- Close fuel tap control lever A (downstream
of the pressure gauge);
- operate the electric pump with the engine
switched off, as described in the previous
test: the pressure should reach 6 bar and
not exceed 7.5 bar (pump safety valve setting). If this is not the case, replace the
electric pump because it is defective.
42
Marea-Marea Weekend
ft 20v
Engine
Fuel system
10.
If in the 1 st test (see previous page) the pressure measured exceeded three bar, then it is
necessary to:
- disconnect the fuel return pipe (at the c o n nection point (1) with the rigig fuel return
pipe to the electric pump) and place it in a
suitable container for collecting the fuel.
- place both taps A and B in the open position;
- operate the electric pump w i t h the engine
switched off, as described on the previous
page, then read the pressure value on the
gauge:
a. if it reaches 3 bar, then the fuel return
pipe to the tank should be checked because it is obstructed or bent;
b. if it exceeds 3 bar, then the pressure regulator should be replaced because it is
defective.
3rd Test
Injector seal check
MllAlTl
Then:
- switch off the electric pump;
- observe whether, as soon as it stabilizes (i.e. decreases slightly) the pressure remains constant for
about 60 seconds.
If this is not the case, there is a leak from one or more injectors or one of the connectors.
- In such a case, remove the fuel manifold from the inlet manifold, maintaining the connection w i t h the
pressure gauge.
- Repeat the previous test leaving the pressure gauge tap open.
- After having operated the electric pump w i t h the engine switched off, visually inspect whether there
are drips from any of the injectors or connections.
Replace any dripping injector and/or renew the defective seal for the connection w h i c h is leaking.
43
Engine
Marea-Marea Weekend
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Fuel system
10.
R E M O V I N G - R E F I T T I N G F U E L TANK
For the procedure for removing-refitting the fuel tank, refer to the Fuel System section for the 1581 16V
version, w i t h the difference being that there are t w o fuel vapour recirculation pipes to be disconnected
(see also the "fuel anti-evaporation circuit diagram" at the start of this section).
C H E C K I N G ENGINE IDLE S P E E D
If the engine idle speed is not 750 50 rpm and the injection/ignition control unit is the self-adjusting
type, then it is not possible to carry out any adjustment, therefore it is necessary to check that the accelerator linkage is correctly adjusted and the fault should be sought through a complete fault diagnosis
with the Fiat/Lancia Tester.
C H E C K I N G CONCENTRATION O F POLLUTANT E M I S S I O N S
By means of the self-adjustment of the system, the Motronic M 2.10.4 ensures a constant check of the
idle speed and the CO percentage, thereby making any external adjustment superfluous (there are no
longer any adjustment screws). However, a check on the exhaust gas content, downstream of the catalyzer, can provide precious information concerning the operationof the injection/ignition system, the
engine parameters and the catalyzer.
C h e c k i n g idle c o n c e n t r a t i o n of C O a n d H C u p s t r e a m of t h e c a t a l y t i c s i l e n c e r
To check the concentration of carbon monoxide (CO) and unburnt hydrocarbons (HC) upstream of the
catalyzer, proceed as follows:
1. Undo the cap or the nut on the exhaust pipe upstream of the catalyzer and tighten the tool in its
place.
2. Connect a suitably calibrated CO tester to the tool.
3. Start up the engine and let it reach operating temperature.
4. Check that the engine speed is as planned.
5. Check that the idle concentration of CO is within the recommended values given in the table overleaf;
if this is not the case, it is necessary to check:
- that the Lambda sensor is working properly, using the Fiat/Lancia Tester;
- for the presence of air penetration in the area surrounding the Lambda sensor housing;
- the injection system and ignition (in p a r t i c u l a r the s t a t e of w e a r of t h e s p a r k p l u g s ) .
6. In the same conditions, check that the concentration of HC is not below 600 p.p.m.
7. If the above values are not found, proceed to check the engine paying particular attention to:
the ignition advance angle - the valve clearances - the valve gear timing - the engine compression.
-
44
the
the
the
the
Marea-Marea Weekend
Engine
ft^ov
Fuel system
10.
Checking exhaust concentration of CO and HC
The exhaust concetration of carbon monoxide (CO) and unburnt hydrocarbons (HC) is carried out by
inserted a suitably calibrated CO tester at least 30 cm into the end section of the exhaust pipe as shown
in the diagram.
If the shape of the end section of the exhaust pipe is such that the sensor cannot be fully introduced,
then it is necessary to add a special extension pipe w h i c h ensures the seal in the join area.
1. Check that the CO and HC idle concentration values are those recommended in the table.
2. If the HC value is outside the recommended limit, whilst that measured previously upstream of the
catalyzer was correct, then the engine parameters are thought to be correct and the cause of the
problem should be sought in the decreased efficiency of the catalyzer.
CO (%)
HC (p.p.m.)
CO
(%)
2
0,4 - 1
600
^12
<0,35
<90
^13
P4F45DJ01
Copyright
by Fiat Auto
45
Engine
Marea-Marea Weekend
ft**
Fuel system
10.
DIAGNOSIS
The complete fault diagnosis of the system is possible through active dialogue with the Fiat/Lancia
Tester
If a failure is detected at the sensors, the electronic control unit replaces the information coming from the
faulty sensor w i t h information memorized previously (recovery) to allow the continued operation of the
engine. The detection of the fault involves it being permanently memorized and the exclusion of the
sensor from the system until the system is compatible once again.
The same procedure is applied if the fault involves an actuator or its operation. The identificaation of the
fault and its replacement with recovery data involves the fault being signalled by the specific warning
light in the instrument panel coming on.
The following parameters can, in the case of a fault, be managed by the control unit: f l o w meter, idle adjustment actuator, coolant temperature sensor, butterfly valve position sensor, Lambda sensor, air temperature sensor, battery voltage and detonation sensors. In the case of problems at the control unit, the
timing sensor or the injectors, the system does not identify the fault and the vehicle stops. On request of
the operator, the faults can be read at the control unit using the Fiat/Lancia Tester.
Identifying faults
This is carried out during the basic function through which the sensor/actuator is managed.
Memorizing the error and structure of the errors memory
The errors are memorized in the control unit in the order in which they arrive in the RAMs. For each
them the location and the type of error are memorized, plus 2 environmental conditions (specific for
each type of fault) measured the moment the fault is identified, and a frequency counter.
Classification of the defect
If a defect is recognized for the first time and the error state persists for a time t > 0.5s, then the defect is
memorized as "permanent". If this defect later disappears, it is memorized as "intermittent" and "not
present". If it later reappears, it is memorized as "intermittent", but becomes "present".
The classification of a fault as "permanent" activates the recovery functions; when the fault disappears,
the normal reading or implementation function is restored.
Several types of fault are classified as "important", in other words in terms of the pollution control regulations. The presence of these faults is signalled to the user by the failure warning light in the instrument
panel coming on.
Frequency counter
Each errros is allocated a frequency counter, w h i c h is used to determine the moment at w h i c h a fault no
longer present was memorized. The first time the fault is detected, the counter is set at 10. If the fault
disappears, the counter remains at the current value. If it reappears, then it is increased by 1 (with an upper limit of 50).
The counter is decreased each time the engine is started up and the fault has not reappeared. If the
counter reaches zero, then the fault is automatically cancelled from the memory.
If, after having decreased the counter, the fault reappears, then the counter is returned to the value of 10
(if, however, it was already above 10, it is not altered).
Signalling a failure
The failure warning light comes on when there is a defect memorized as "present" and "important".
The delay time between detecting the fault and the warning light coming on is 0.1 seconds; the delay
time between the fault disappearing in the memory and the warning light going out is 4 seconds.
The warning light comes on each time the ignition is turned to the ON position. If there are "important"
faults already present, then the warning light goes out after 4 seconds.
46
Marea-Marea Weekend
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Engine
Fuel system
10.
Cancelling the error
When the frequency counter reaches the value 0, the fault and the associated parameters are cancelled.
The immediate cancelling of the entire errors memory takes place in the following cases:
- by means of the "cancel errors memory" command sent by the tester;
- by interrupting the control unit supply (disconnecting the battery or the control unit connector).
List of errors
Rpm sensor
Butterfly potentiometer
Air temperature sensor
Coolant temperature sensor
Battery
Lambda sensor
Injector
Idle speed actuator
Petrol vapour solenoid valve
Relays/actuators
Control unit
Flow meter
Timing sensor
Detonation sensor
Speedometer sensor
Phase transformer
Electric fuel pump
Fiat CODE
Loss of signals
C.C.
C.C.
C.A-C.C.
S u p p l y > 16.01V.
Supply < 10V.
C . A - C . C - Incorrect CO value
C.C
C.C.
C.C.
C.C.
Operating faults for the microprocessor or the control
unit memories are signalled.
C.C.
Signal absent or not plausible
Signal absent or not plausible
Signal absent or not plausible
C.C.
C.C.
Code not recognized or not received
47
Engine
Fuel system
10.
Parameters displayed
Engine rpm
Injection time
Advance
Intake air temperature
Coolant temperature
Butterfly valve opening angle
Battery voltage
Lambda sensor
Self-adjustment
Flow meter
Knocking (detonation)
Vehicle speed
Petrol vapour cut out solenoid valve
Fiat CODE
Mileage covered
Active diagnosis
The following tests can be activated using the Fiat/Lancia Tester:
- Phase transformer
- Injector
- Failure warning light
- Petrol vapour solenoid valve
- Air conditioning
- Idle speed actuator
- Cancelling errors.
Recovery
In the case of failures at the sensors, the control unit replaces the value transmitted by the sensor w i t h a
value known as the Recovery value which, depending on the different faults, is either memorized in the
control unit or reconstructed specially using other available information in order to allow the vehicle to
reache a service centre.
This value is also transmitted to the Fiat/Lancia Tester, therefore, during the fault diagnosis it is w o r t h
bearing in mind that in the case of problems, the Fiat/Lancia Tester will signal the error for the sensor
concerned and the Recovery value will appear on the display.
Permanent memory
The control unit is equipped w i t h a permanent type memory (EEPROM), which preserves the indication of the error even when the cause no longer exists and the ignition is switched OFF; and a volatile
type memory ( R A M ) which loses the information concerning the error as soon as the cause ceases.
This also makes it possible to identify errors of an occasional nature more effectively.
Before ending the fault diagnosis, the contents of the permanent memory should be cancelled using
the Fiat/Lancia Tester in Active diagnosis.
The contents of the permanent errors memory can be cancelled in the following ways:
1 - Using the Fiat/Lancia Tester in active diagnosis.
If this is not the case, when the Fiat/Lancia Tester is reconnected, the errors already examined will be
signalled.
2 - If the cause of the error is no longer present and the engine has been started up 5 times (running for
at least 20 minutes) with a gap of at least 2 minutes between one time the engine is started up and
the next.
Disconnecting the control unit from the system, even for very long periods, does not cancel the
contents of the ((permanent)) memory.
48
Marea-Marea Weekend
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Engine
TD100
Contents
10.
FUEL SYSTEM
page
Fuel system w i t h Lucas FT09 pump
- Introduction
- Description of the fuel system
- Location of fuel system components
- Air intake circuit
- Fuel supply circuit
Fuel injection pump
- Principle of operation
- Diagram of fuel circuit
- Flow supplement
- Adjusting fuel injection advance
- Transfer pump
- Transfer pump regulating valve
- Hydraulic head
- Cam ring
- High-pressure delivery valve
- Cut-off solenoid
- Turbocharging control valve
- Speed regulator
Electrical-electronic circuit
- Electronic control unit
- Management of injection advance
- Management of fast idle
- Management of ex. gas recirculation
- Management of air conditioning system
- Management of heater plug pre/post
-heating
- Instrumented fuel injector
- Input and output signals t o / f r o m c o n trol unit/sensors and actuators
- Wiring diagram
- Engine rpm sensor and
phonic
wheel
- Air flowmeter
- Coolant temperature sensor
- Preheating control unit
- Air temperature sensor
- Diagram of recirculation of gases from
crankcase ( b l o w - b y )
- Burnt
gas
recirculation
system
(E.G.R.)
Removing-refitting fuel injection p u m p
1
1
1
2
3
4
5
6
7
8
9
9
10
11
11
12
12
13
14
15
15
16
16
17
17
18
18
19
20
21
22
23
24
24
25
26
27
Marea-Marea Weekend
wo
Engine
Fuel system
10.
FUEL SYSTEM WITH LUCAS FT09 PUMP
INTRODUCTION
The fuel injection consists of a set of devices w h i c h insert fuel into each cylinder, metering the necessary
quantity to obtain regular and effective combustion.
The correct operation of the engine largely depends on correct fuel injection.
The essential conditions to be met are:
- to supply for each cylinder and for each cycle the quantity of fuel required by the engine depending on
the speed of rotation and load, thus metering the fuel;
- to insert the fuel at the most appropriate moment, repeating the start of fuel injection always at the
same point of the cycle, selected in order to be as close as possible to the engine's ideal operating cycle; it must be possible to change this instant in accordance with the speed of rotation;
- to atomize the fuel, dividing it into very fine droplets, to facilitate its ignition;
- to give the droplets sufficient kinetic energy to penetrate into the mass of compressed air;
- to diffuse the fuel particles as evenly as possible in all directions, so that as much as possible of the air
enclosed in the cylinder may be used for combustion.
The main features of the fuel system on the 1910 TD indirect fuel injection engine are as f o l l o w s :
- management of the fuel injection advance assigned to an electronic control unit (ECU);
- turbocharging by turbo blower and air/air heat exchanger;
- cross-flow inlet/exhaust pipes;
- exhaust gas recirculation system (EGR) for reducing nitrogen oxides (NOx);
- crankcase vapour recirculation system ( b l o w - b y ) .
These devices allow the engine to meet the limits of the CEE F2 standard, also ensuring greater economy
of operation, reduced engine noise and improved driveability of the car.
Engine
Marea-Marea Weekend
fti
00
Ful system
io7
LOCATION O F F U E L S Y S T E M C O M P O N E N T S
P4F02EJ01
8. E.G.R. valve
2. Diagnostic socket
4. Injection pump
7. Heater plugs
Engine
Fuel system
10.
AIR INTAKE CIRCUIT
The air intake circuit is turbocharged by a Garret GT15 turbocharger w i t h self-regulating pressure valve
(Waste-gate) and maximum supply pressure of 1.05 bar.
The air is drawn in through the intake (1) and, after passing through the filter (5), it is compressed by the
turbocharger (2) which is driven by the exhaust gases; the air then passes through the heat exchanger
(intercooler) ( 3 ) .
The air f l o w thus assumes optimum temperature and density values and reaches the inlet manifold (7)
from which it is distributed to the cylinders.
P4F03EJ01
1.
2.
3.
4.
Intake
Turbocharger
Heat exchanger (intercooler)
Air flowmeter
5. Air cleaner
6. Air temperature sensor
7. Inlet manifold
Engine
Marea-Marea Weekend ft TO
100
Fuel system
10.
FUEL SUPPLY C I R C U I T
The main components of the fuel system are: fuel tank, filter, injection pump and fuel injectors.
The fuel f l o w s from the tank (6) to the injection pump(2) passing through the filter ( 7 ) .
The injection pump ( 2 ) , of the rotary type, ensures that the fuel injectors (1) are supplied correctly in the
injection order 1 - 3 - 4 - 2 .
NOTE
1. Fuel injectors
2. Injection pump
3. Delivery pipe from tank to filter
4. Return pipe
5. Vent pipe
6. Fuel tank
7. Fuel filter
8. Fuel delivery pipe from filter t o injection
pump
Marea-Marea Weekend
ft TD100
Engine
Fuel system
10.
FUEL I N J E C T I O N P U M P
The Lucas FT09 fuel injection pump is specific to indirect injection diesel engines, w i t h specific innovations which optimize the operating characteristics of the engine under all operating conditions; in particular, it permits a reduction in fuel consumption, harmful emissions and noise.
The function of the fuel pump is to precisely meter the quantity of fuel and to inject it at high pressure i n to the combustion chamber of each cylinder at a precise moment of the engine's cycle; the quantity of
metered fuel is then atomized at high pressure by the fuel injector.
It is essential for the injection pump to operate accurately and reliably, as the cycle is repeated thousands
of times a minute; thus no variations in the injection point (advance) or the quantity of fuel injected
(metering) are admissible throughout the life of the engine.
The injection pump is characterized by rather small overall dimensions; it is of the rotary distributor type,
its structure is so compact and it does not require any system of external lubrication as it is lubricated by
the filtered diesel w h i c h saturates it continuously during operation.
The internal pressure prevents infiltration of dust, water or other foreign bodies harmful to its operation,
in addition the particular design of the hydraulic circuits prevents the accumulation of air.
To facilitate both starting and delivery of full power, irrespective of climatic conditions, the p u m p has an
automatic system for supplementing the f l o w rate w h i c h increases the quantity of fuel injected.
The pump consists of a single pumping element, comprising t w o pistons opposite each other, w h i c h is
an integral part of the distribution impeller. The impeller rotates inside a unit called the hydraulic head.
The piston contacts the inner lobes of a cam ring by means of a unit consisting of a roller and roller carrier shoe.
The adoption of a single pumping element ensures that fuel is delivered evenly to each cylinder, and eliminates balancing of deliveries which is absolutely essential in all pumps comprising separate pumping
elements.
The fuel, accurately metered during insertion in the pumping element, is distributed to each injector at
the correct moment thanks to a system of passages in the hydraulic head and impeller.
On a command from the electronic control unit the pump can vary the injection advance and can therefore adjust the point of commencement of injection in the engine cycle, so that it takes place at the o p t i mum moment in all operating conditions.
P4F05EJ01
Engine
Marea-Marea
WeekendTD100
Fuel system
id.
Principle of operation
The fuel, drawn from the tank (11) and filtered through the filter (12), reaches the transfer pump (7)
which further increases the fuel pressure.
This pressure, regulated by the transfer pump pressure regulating valve, increases in a fairly linear manner as the engine rpm increases.
The valve (2) also bypasses the transfer pump (7) during priming.
From the transfer pump, the fuel reachers the meter (6) w h i c h determines the quantity of fuel to be sent
to the pumping element (4) and thus the correct injector f l o w rate.
The position of the meter (6) is controlled by the speed regulator (13) and depends on the position of
the accelerator pedal.
The pumping element consists of t w o pistons opposite each other, w h i c h slide radially in the impeller
and are operated, via rollers and sliding shoes, by the profile of a cam ring.
The pistons have no return springs, as they are pushed outwards by centrifugal force and the pressure of
the entering fuel in the fuel supply stage.
The rollers which drive the pistons come into contact with the profile of the cam at different points depending on whether more or less travel has been executed during the fuel supply stage.
This travel is dependent on the quantity of fuel w h i c h enters into the pumping chamber, regulated by the
meter and the expansion time of the pumping pistons, given by the speed of rotation of the pump.
During the fuel injection stage, the piston control rollers come into contact w i t h the cams on the cam
ring, and the pistons are pushed inwards causing an increase in pressure and so the injection of fuel.
At the end of the injection stage, the pistons are pushed outwards, the pressure falls, fuel is no longer
delivered and the valve (5) closes the delivery pipe.
In addition to closing the delivery pipe, the valve (5) instantaneously lowers the pressure in the pipe
communicating with the injector (10) and so promptly interrupts injection, to prevent the injector dripping.
The maximum quantity of fuel that can be inserted into the pumping element (4) at each cycle is determined by a maximum f l o w rate regulator.
The pressure in the pumping element (4) is kept at a constant value of the pressurization valve ( 9 ) .
The solenoid (8), driven by the electronic control unit, allows the advance of commencement of p u m p
delivery to be varied so as to increase it w h e n the engine load exceeds a particular threshold.
The engine cut-off solenoid (electrostop) (3) is protected by a tamper-proof cover.
During engine operation, the solenoid remains energized, allowing fuel to pass from the transfer p u m p
(7) to the supply pipe.
"
" "'"
' - ~
When t h e key is turned to switch off the engine, the solenoid is de-energized, cutting off the passage of
fuel; the fuel supply chamber of the meter is no longer supplied and the engine is turned off.
Engine
Fuel system
10.
D I A G R A M OF FUEL CIRCUIT
P4F07EJ01
1.
2.
3.
4.
7. Transfer pump
8. Advance actuator solenoid
9. Pressurization valve
10. Injectors
1 1 . Tank
12. Filter
13. Speed regulator
Engine
Marea-Marea Weekend
100
Fuel system
10.
Flow supplement
To facilitate both engine starting and delivery
of full power, there is a system w h i c h , by
varying the travel of the pumping element
pistons, allows the maximum flow rate of the
fuel to be increased.
In particular there are the following three o p erating modes:
1) Operation during starting
During engine starting, the inlet transfer
pressure (1) is relatively low, i.e. it allows the
spring (2) to overcome the force exerted by
the pistons (5) and to extend, so moving the
sliding shoes (3) outwards.
In this condition the pistons (4) are in c o n tact with the shorter side of the shoes ( 3 ) ,
thus increasing the travel and so also the
maximum f l o w rate.
2) Operation w i t h turbocharger not on
(2>
3) Operation w i t h turbocharger on
Switching the turbocharger on causes an i n put pressure (6) into the control valve (7)
w h i c h causes an internal piston to move,
thus allowing the transfer pressure input pipe
(8) to communicate w i t h the return pipes (9
and 10).
The reduction in pressure on the piston (5)
allows the spring (2) to overcome the pressure of the inlet fuel ( 1 ) .
The extension of the spring (2) causes the
shoes (3) to move, thus increasing the travel
of the pistons (4) and the fuel f l o w rate.
8.
Marea-Marea Weekend ft
Engine
TD 1 0 0
Fuel system
10.
Adjusting injection advance
The injection advance adjustment system a l lows the point of commencement of injection
to be varied so that it takes place at the o p t i mum moment during all engine operating
conditions.
The system consists of a piston (2) sliding in
the cylinder (3) and counteracted by the
spring (5).
The piston is connected, via the spherical-
headed threaded pin (4), to the cam ring ( 6 ) .
If the solenoid (7) is not activated, the transfer pressure ( 1 ) , acting on the piston ( 2 ) ,
moves the piston overcoming the resistance
of the spring (5) and, through the pin ( 4 ) ,
causes the cam ring (6) to rotate in relation t o
the pump drive shaft towards the position of
maximum advance.
1.
2.
3.
4.
5.
6.
7.
8.
Fuel inlet
Piston
Cylinder
Pin
Spring
Cam ring
Solenoid
Fuel outlet
Transfer pump
The transfer pump, which is of the positive-displacement type (intake and pressurization), consists of an impeller ( 1 ) , an elliptical ring (3) and t w o rigid brushes ( 2 ) .
2. Brushes
3. Elliptical ring
Engine
Marea-Marea Weekend
ft TD 100
Fuel system
10.
Transfer pump regulating valve
The transfer pump regulating valve is housed in the hydraulic head, and has three separate functions:
- it creates the transfer pressure;
- it checks this pressure, maintaining a specific relationship between the transfer pressure and rotation
speed;
- it pressurizes the fuel metering circuit whenever it is necessary.
The regulating valve consists of a valve casing (4) containing a piston (2) and spring ( 3 ) .
The force applied by the spring (3) can be adjusted by an outer screw ( 5 ) , and is counteracted by another spring (1) which holds the piston (2) in its initial position.
When the speed of rotation of the transfer pump is increased, the f l o w rate increases and so does the
pressure acting on the piston (2).
The piston (2) moves, compressing the regulating spring ( 3 ) , and gradually permits communication between the holes (8) and ( 9 ) , allowing fuel to return to the transfer pump intake through the passage ( 7 ) .
By increasing and decreasing the passage through the holes (8) and ( 9 ) , the valve regulates the transfer
pressure value.
The valve also fills the transfer pump to ensure priming during the starting stage.
During this stage, the lack of inlet pressure allows the spring (3) to extend and to move the piston (2)
which compresses the spring ( 1 ) ; the fuel present in the connection (7) enters through the hole ( 8 ) , and
passing through the piston (2) it emerges through the pipe (10) reaching the transfer pump.
P4FT0EJ0T
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Counter spring
Piston regulating the transfer pressure
Regulating spring
Regulating valve casing
Transfer pressure adjustment screw
Locknut
Return passage of regulated fuel to transfer pump
Adjustment hole
Filling hole
Fuel inlet from transfer pump
Publication no.
506.763/02
Marea-Marea
W e e k e n d
ft
Engine
r 100
D
Fuel system
10.
Hydraulic head
Fuel metering, pumping and distribution take place in the main section of the injection pump, called the
hydraulic head.
The hydraulic head comprises t w o units:
- the hydraulic head stator;
- the distribution rotor, comprising a single element and t w o pumping pistons.
The distribution rotor is related to the hydraulic head seating, while the pumping pistons are related to
their seatings in the rotor. This means that these parts are not interchangeable, but constitute a single assembly.
The fuel subjected to the transfer pressures
enters into one of the holes in the hydraulic
head; the opening of this hole is controlled by
the movement of the metering valve connected to the mechanical regulator.
During the loading cycle, t w o loading holes
in the rotor line up with t w o filling holes in
the head's stator. A metered quantity of fuel,
regulated by the metering valve, enters into
the pumping element and moves the p u m p ing pistons (3) away, pushing outwards the
assembly formed by the roller (1) and roller
carrier (2).
Rotating, the rotor interrupts the alignment
between the loading and filling holes (end of
filling cycle).
Continuing to rotate, one of the fuel delivery
holes lines up w i t h one of the high-pressure
outlets.
1.
2.
3.
4.
Roller
Roller carrier
Piston
Cam ring
1. Cam ring
2. Cam ring screw
Cam ring
The inner surface of the cam ring comprises
diametrically opposed lobes (1) and is machined with the utmost precision.
The shape of the lobes causes the pressurization movement in the pump, determines the
duration of the injection stage and evens out
the delivery cycles.
The cam ring screw (2) connects the cam
ring to the fuel injection advance adjustment
system.
When the pump starts the injection cycle, the
t w o roller and roller carrier units which are in
contact with the pistons start moving inwards
under the thrust of two opposing lobes.
This is the point of commencement of injection.
While the rotor continues t o rotate, the rollers
move upwards, until they reach the apex of
the lobes.
This is the point of end of injection.
Continuing the fuel injection cycle, the rollers
lose contact w i t h the cam ring and the hydraulic head rotor returns to the l o w pressure
condition ready for the new loading cycle.
11
Engine
Fuel system
io.
High-pressure delivery valves
The delivery valves are enclosed between the
high-pressure outlet connections (7) and the
head's stator.
The fluid-tightness between the valve casing,
head and connection is obtained by means of
t w o steel washers (1 and 3 ) .
1.
2.
3.
4.
5.
6.
7.
Washer
Valve casing
Washer
Delivery valve
Spring
Spring guide
High-pressure outlet connection
PAFIZEJOI
Cut-off solenoid
The engine is turned off by cutting
off delivery completely.
This result is obtained by a
solenoid valve (3) screwed into
the hydraulic head w h i c h acts between the passage of the transfer
pressure (1) and the passage of
the supply to the metering valve;
(4).
The cut-off solenoid, also called
Electrostop, is connected to the Fiat CODE system directly, and for
this reason is protected by a t a m per-proof cover.
12
Marea-Marea Weekend
Engine
ft ID 100
Fuel system
10.
Turbocharging control valve
The function of the turbocharging control valve is to adjust the maximum f l o w rate of the fuel in relation
to the variation in pressure of the intake air caused by the turbocharger.
The turbocharging control valve comprises a valve casing (1) containing a piston (2) w h i c h rests
against a spacer ( 3 ) .
T w o diaphragms (4) of different sizes are on the t w o sides of the spacer ( 3 ) .
The turbocharging pressure is produced by the turbocharger, and it enters between the t w o diaphragms
through the connection ( 7 ) .
The turbocharging valve is inserted in the transfer pressure circuit in a point between the transfer p u m p
and flow rate supplement device.
It varies the pressure which acts on the pistons of the supplement device in accordance w i t h the air pressure supplied by the turbocharger.
During acceleration, the engine speed increases as does the pressure produced by the turbocharger
w h i c h reaches the turbocharging control valve, gradually moving the diaphragms (4) w h i c h compress
the spring ( 5 ) .
The piston (2) of the valve moves, opening the discharge hole (8) and causing a fall in pressure behind
the pistons of the flow rate supplement device.
In these conditions, the spring of the supplement device can gradually push the system towards the
"supplement o n " position.
This movement allows the piston of the control valve (2) to gradually open an orifice (8) w h i c h allows
the fuel to discharge through the fuel return pipes to the tank, and t o reduce the accumulated pressure
upstream of the pistons of the supplement device.
1.
2.
3.
4.
5.
6.
7.
Valve casing
Piston
Spacer
Diaphragms
Spring
Adjustment screw
Connection for the turbocharging pressure
8. Discharge of the transfer
pressure
9. Recovery connection
P4F13EJ01
13
Engine
Marea-Marea Weekend
ft TD 100
Fuel system
10.
Speed regulator
The speed regulator connects the throttle lever (1) to the metering lever ( 7 ) . Its function is t o control the
idle speed (and fast idle) and maximum speed of the engine.
The idle/maximum regulator (min/max device) (2) consists of a preloaded spring contained in a steel
tube w h i c h connects the throttle lever (1) to the top of the regulator plate ( 3 ) . In turn, the regulator plate
rotates the metering valve (7) via a connecting rod ( 5 ) .
A blade spring (14) secured to the front of the regulator plate controls the idle speed.
The weight carrier ( 1 0 ) , w h i c h is secured to the drive shaft ( 1 1 ) , contains a number of weights (9) subject to a centrifugal force which varies in accordance with the engine speed.
During idling, the centrifugal force w h i c h acts on the weights is weak, and the regulator plate is balanced between the force exerted by the weights (9) and the force of the blade spring (14) w h i c h rests
on the ledge of the idle shaft.
During acceleration, the accelerator lever ( 1 ) , via the regulator rod ( 5 ) , moves the metering valve (7) t o wards the fully open position.
The centrifugal force exerted by the weights increases, but remains less than that of the preload of the
spring of the min/max device ( 2 ) .
This means that the connection between the metering valve (7) and the accelerator lever (1) is direct.
During regulation, or when the speed reached increases the centrifugal force of the weights so as to
overcome the preload of the spring of the min/max device, the regulator controls the position of the metering valve (7).
In this case, the connection between the metering valve (7) and the accelerator lever (1) is no longer d i rect.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Accelerator lever
M i n / m a x device
Regulator plate
Regulator bracket
Regulator rod
Regulator rod spring
Metering valve
Regulator sleeve
Regulator weights
Weight carrier
Drive shaft
Idle shaft
Idle lever
Idle blade spring
P4F14EJ01
14
Marea-Marea Weekend
ft
TO
100
Engine
Fuel system
10.
ELECTRICAL - ELECTRONIC CIRCUIT
The electrical - electronic circuit of the fuel system comprises mainly wiring, an electronic control unit
and the following sensors and actuators:
- Rpm sensor
-
management
management
management
management
management
of
of
of
of
of
injection advance
fast idle
exhaust gas recirculation
air conditioner
plug pre/post-heating
15
Engine
Marea-Marea Weekend
tyro 100
Fuel system
Si
P4F,6EJ01
M A N A G E M E N T OF F A S T I D L E
The fast idle function is switched on by the control unit w h e n at least one of the following conditions
arises:
1. intake air temperature below 25 C and engine coolant tmperature below 55 C;
2. air conditioner compressor o n ;
3. idle speed below 750 rpm.
1.
2.
3.
4.
5.
6.
lb
Marea-Marea Weekend
ft TD
100
Engine
Fuel system
10.
MANAGEMENT OF EXHAUST GAS RECIRCULATION
The electronic control unit calculates the weight ratio between the "clean" air drawn in and the quantity
of burnt gases w h i c h can be drawn in. Depending on the engine load, coolant temperature, atmospheric
pressure and quantity of air drawn in, the electronic control unit drives the Borg Warner solenoid w h i c h
in turn activates the EGR valve by means of a vacuum signal, thus permitting partial recirculation of the
exhaust gases.
1. Electronic control unit
2. Throttle pedal position sensor
3. Flowmeter
Rpm sensor
Coolant temperature sensor
Borg Warner solenoid
Atmospheric pressure sensor
SYSTEM
When the air conditioner is switched on, the compressor absorbs power from the engine w h i c h , during
idling, w o u l d stall. To prevent this problem, the control unit activates the fast idle function described
above.
Another function carried out by the control unit is to interrupt the supply to the compressor if one of the
following conditions arises:
1. Coolant temperature over 110 C;
2. Surpassing of a particular rpm threshold (about 4 5 0 0 ) ;
3. High engine power requirement (heavy acceleration).
In conditions 1 and 2, the supply is restored w h e n the coolant temperature or engine rpm values fall below the intervention threshold.
In condition 3, the interruption is only temporary and is automatically restored after a f e w seconds, even
if the high power requirement is still in progress.
Electronic control unit
Coolant temperature sensor
Air conditioner switch
Rpm sensor
Compressor relay
Air conditioner compressor
17
Engine
Marea-Marea Weekend
tyro 100
Fuel system
10.
M A N A G E M E N T OF P L U G P R E / P O S T - H E A T I N G
The electronic control unit directly controls the plug preheating control unit, managing the pre- and
post-heating times mainly in accordance w i t h the engine coolant temperature and intake air temperature.
To calculate the post-heating times, the control unit also assesses the throttle lever position values and
rpm, reducing these times in the case of a high engine power requirement.
18
Marea-Marea Weekend ft
Engine
100
Fuel system
10.
INPUT AND O U T P U T S I G N A L S T O / F R O M CONTROL U N I T / S E N S O R S AND A C T U A T O R S
9.
10.
11.
12.
13.
14.
15.
16.
Rev counter
Rpm sensor
Battery
Instrumented fuel injector
Air flowmeter
Fast idle valve
Coolant temperature sensor
Air temperature sensor
19
20
Marea-Marea Weekend
ft 100
Engine
Fuel system
10.
Key to wiring diagram
1. Heater plugs warning light
2. Rev counter signal
3. Air conditioner relay
4. Air conditioner on button
16. Battery
Characteristics:
Gap
0.8 - 1.5 mm
Winding resistance
860 ohm 10% at 20C
1. Rpm sensor
2. Phonic wheel
The engine rpm sensor is mounted on the engine block and is opposite a phonic wheel, located inside
the engine block and secured to the crankshaft.
The sheet metal phonic wheel has 2 reference lugs positioned at 180 from each other, on the outer circumference.
Because the gap varies, the passage of these lugs or teeth under the sensor causes a change in the m a g netic flow w h i c h leads to a current in the coils of the w i n d i n g contained in the sensor.
This signal sent to the control unit allows the engine rpm to be detected.
21
Engine
Marea-Marea Weekend
wo
Fuel system
10.
Air flowmeter
The air flowmeter is of the "heated f i l m " type; the principle of operation is based on a heated diaphragm
which is interposed in a measuring channel through which the intake air entering the engine flows.
The film diaphragm is kept at a constant temperature ( ~ 120C above the air temperature) by the heater
element w h i c h is in contact w i t h it.
The mass of air passing through the measuring channel tends to take heat away from the diaphragm, so
to keep this temperature constant, some current must f l o w through the heating element; this current is
measured by a suitable Wheatstone bridge.
The measured current is therefore proportional to the mass of air flowing through.
1. Connector
2. Measuring channel
3. Hot film sensor
A = Air inlet
P4F22EJ01
NOTE
This flowmeter directly measures the mass of air (and not volume), thus eliminating
temperature, altitude, pressure, etc.
problems
of
Description of operation
The Wheatstone bridge (formed by R3, R2, Rs, R t + R 1 ) is in equilibrium w h e n Rs is at about 120C
above the air temperature.
The air passing through the diaphragm takes heat from Rs, so the bridge is unbalanced. This situation is
detected by the circuit w h i c h is under IC1; this circuit controls, proportionally to the imbalance of the
bridge, the transistor T1 w h i c h consequently allows more current to pass through Rh in order t o heat Rs
and so restore the balance of the bridge.
The circuit IC2 measures the current passing through Rh. This current allows the bridge to be kept in
equilibrium and is thus proportional to the mass of air passing through the air flowmeter.
22
Engine
Fuel system
10.
Coolant temperature sensor
10}
3U.UUU nn Ann
4U.UUU
4/1 AAA
lU.UtlU -
6.000 -
M>
RNTC
g 000
4
3.000
TEMPERATURE (" C)
2.000-
100
90
800-
80
60070
400*
300-
SO
200-
50
40
10080
30
60-
20
40-
10
300
20-
-10
16
-
30
2ft-1 D C
40
60
80
T
1C 0 - 1 2 9
1 39
ro
1 4
1 *
2.8
3A
&8
42
4JS
VOLTAGE (V)
P4F23EJ02
23
Engine
Marea-Marea WeekendTD
100
Fuel system
lb.
Preheating control unit
The plugs are controlled by the preheating
control unit, under the direct control of the
electronic control unit.
Inside there is an "intelligent" relay w h i c h
sends a feedback response to the fuel injection electronic control unit w h i c h is thus i n formed of a fault in the preheating control
unit or a short circuit to earth of the plugs.
Car earth
Not connected
Ignition switch ( + 1 5 )
Electronic control unit (pre/post-heating
activation)
Electronic control unit (fault diagnosis)
Battery positive
Heater plugs
Heater plugs
24
Engine
Fuel system
10.
DIAGRAM OF RECIRCULATION OF GASES FROM CRANKCASE (BLOW-BY)
The crankcase emissions consist of mixtures of air-diesel and burnt gases w h i c h leak through the piston
sealing rings, and also lubricating oil vapours. These are defined as " b l o w - b y " or vent gases.
The vent gases coming from both the crankcase and cylinder head pass through the pipe (3) and reach
the separator (2) where, following the vortex action to which they are subjected, they lost some of the
oil dissolved in them w h i c h , in the form of drops, falls back into the sump through the pipe ( 4 ) .
The remaining gases are instead conveyed to the intake circuit through the pipe ( 5 ) .
Inside the gas outlet pipe (1) from the cylinder head, there is a flame trap (6) to prevent combustion
phenomena caused by returning flames.
25
Engine
Fuel system
P4F26EJ01
26
5. E.G.R. valve
A
Marea-Marea Weekend
Engine
ft TD 100
Fuel system
10.
REMOVING-REFITTING
PUMP
INJECTION
Place the car on ramps, disconnect the battery's positive terminal, remove the front right
wheel and proceed as follows:
1. Remove the screws indicated and take off
the front right wheelarch guard.
2. Slacken the bolts indicated, w h i c h secure
the auxiliary components pulley.
3. Adjust the automatic tensioner to slacken
the tension on the auxiliary components
belt, then remove the belt.
4. Remove the timing belt b o t t o m guard.
27
Engine
Marea-Marea Weekend
ft TD100
Fuel system
10.
28
Marea-Marea Weekend
Engine
tyro 100
Fuel system
10.
1. Stop the fuel injection pump pulley rotating by screwing t w o service bolts (1) in
the holes on the pump mounting, then u n do the bolts (2) securing the pulley, undo
the bolts (1) and remove the pulley.
2. Working at the points indicated, d i s c o n nect the diesel delivery pipes from the f i l ter to the pump, the diesel return pipes
from the pump to the tank and the diesel
return pipes from the fuel injectors t o the
pump.
3. Undo
the
bolts arid
sound-proofing guard.
remove
the
4. Disconnect the wiring connections, disconnect the diesel delivery pipe f r o m the
tank to the filter, undo the nuts and remove the diesel filter.
29
Engine
Marea-Marea Weekend
ft TD100
Fuel system
10.
1. Slide the clip (1) in the direction of the arrow, then remove the accelerator cable
from the fuel injection pump by disengaging it from the attachment pin and w i t h drawing it from the mounting and adjustment bracket ( 2 ) .
2. Disconnect the w i r i n g connections indicated.
3. Disconnect the pipe (1) from
vapours separator ( 2 ) . Undo the
curing the separator ( 2 ) ; a third
illustrated) is on the underside of
arator.
the oil
nuts senut (not
the sep-
30
Marea-Marea Weekend
ft TD100
Engine
Fuel system
10.
To refit the fuei injection pump, reverse the procedure described for remove, except for the timing belt.
Before refitting the timing belt, check
that the timing is correct and then
tension the belt as described in the
sub-section
"Replacing
timing
belt"
in the Section
"Removing-refitting
power unit".
31
Marea-Marea Weekend ft r D / s
Engine
Fuel system
10
page
FUEL SYSTEM
A i ri n t a k e
1 III II I
VER-679
firr-nit
Ull WUIt
1
1
1
9
2
3
3
4
7
8
9
10
15
15
17
25
26
27
27
27
28
33
Marea-Marea Weekend
Engine
ft TD 75
Fuel system
10.
F U E L S Y S T E M WITH BOSCH V E R - 679 PUMP
INTRODUCTION
The fuel system consists of a set of devices which introduce an air-fuel mixture into each cylinder and
modulate fuel quantity in order to ensure even, efficient combustion.
FUEL S Y S T E M COMPONENTS
The fuel system is divided into four main subsystems as follows:
-
1.
2.
3.
4.
5.
6.
7.
8.
Injectors
Diagnostic socket
E.G.R. system electronic control unit
Injection pump
Oil vapour separator
Borg Warner modulator valve
Fuel filter
Rpm sensor
9.
10.
11.
12.
Engine
Marea-Marea Weekend
ft
TD 7 5
Fuel system
10.
AIR INTAKE C I R C U I T
The intake circuit is turbocharged by
means of a Garret GT15 turbocharger
with wastegate and maximum feed
pressure of 1.05 bar.
The low inertia type turbocharger is
designed in accordance with a new
turbocharging
concept:
the
turbocharger cuts in to increase torque
within the most frequently used range.
Air is taken in through intake (1) and
flows through filter (3) before being
compressed by exhaust gas-driven
turbocharger (2) and directed on to
the intake manifold from which it is
distributed to the cylinders.
1. Inlet fitting
2. Turbocharger
3. Air cleaner
BLOW-BY
CIRCUIT
GAS
RECIRCULATION
Marea-Marea Weekend
ftr
Engine
D75
Fuel system
10.
FUEL FEED CIRCUIT
1.
2.
3.
4.
5.
6.
Injectors
Injection pump
Delivery line from tank to filter
Return line
Vent pipe
Reservoir
7. Fuel filter
8. Fuel outlet line from filter to injection pump
P4F03GJ01
NOTE
Pipe (5) allows air to flow out from the lowest part of the tank to ensure the entire space can be
filled with fuel. Otherwise an air lock would build up at the bottom due to the shape of the tank.
I N J E C T I O N PUMP
The Bosch VER 679 injection pump is specially designed for indirect injection diesel
engines. New pump features optimise engine
operating characteristics under all service
conditions.
P4F03GJ02
1. Cut-out solenoid
2. Connection for diesel return line to tank
3. Throttle lever position sensor (potentiometer)
4. Connection for diesel delivery line to injectors
5. KSB device
Engine
Marea-Marea Weekend
ft TD 75
Fuel system
10.
A U T O M A T I C C O L D I N J E C T I O N ADVANCE D E V I C E ( K S B )
This device advances the injection point in for more efficient running when the engine is cold.
14
15
16
17
18
11
19
21
Components of automatic cold injection advance device
1.
2.
3.
4.
5.
6.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
OPERATION
Transfer pressure generated by volumetric pump ( 7 ) , feeds the injection pump pumping elements.
When the engine is warm, the injection advance should be directly proportional to rpm. This is achieved
by an advance variator built into the injection pump through the operation of piston ( 2 1 ) .
The increase in transfer pressure, proportional to engine rpm, moves piston (21) to overcome the thrust
of counter spring and thus alter the injection advance angle.
Transfer pressure is regulated by valve ( 1 ) : pressure acting on piston (3) overcomes the reaction of
spring (2) to move the piston itself.
TD 75
Engine
Fuel system
10.
Movement of piston (3) brings about the opening of exhaust ports (4) to allow a proportion of the fuel
to return to the intake chamber of transfer pump (7) in order to regulate feed pressure.
A KSB device has been introduced to ensure the engine runs more efficiently when cold. This is
achieved by increasing the advance at low engine temperatures regardless of engine rpm.
Calibrated hole (5) on piston (3) brings both surfaces (lower and upper) of piston (3) into c o m m u n i cation w i t h one another. Now that the pressures on both sides of the piston are the same, reaction spring
(2) w i l l not allow transfer pressure to be discharged through holes (4). In this way, pressure increases
and thus also the advance.
Transfer pressure in duct (6) may be discharged to the pump intake when the ball valve of KSB device
(14) is open or when valve (18) opens under the action of the transfer pressure.
In this case, piston (3) is free to move and regulate the transfer pressure by discharging any excess
through exhaust ports (4).
Engine cold
With coolant temperatures lower than 60 2 C, the thermal contact on the thermostat is closed, the
wax thermal bulb is not activated and ball valve (13) remains closed.
This inhibits regulation of transfer pressure by valve (1) because pressures on both sides of piston (3)
are equal.
Transfer pressure therefore rises to a level in excess of that for normal operation. The injection advance is
increased by the action of piston ( 2 1 ) .
The supplementary regulation valve (17) restricts transfer pressure below a pre-established value; it is
connected in parallel with the KSB device and allows the KSB device to be by-passed w h e n transfer
pressure acting on piston (19) overcomes the load on spring (18).
Engine
Marea-Marea Weekend
ftro/s
Fuel system
10.
Engine warm
When coolant temperature rises to 60 C 2 C, the thermal contact on the thermostat case closes to activate the wax thermal bulb (9) on the KSB advance control device. The bulb begins to heat up and the
wax expands to push out plunger (20), which moves ball valve (13) from its seat by means of rod (10).
Valve (13) opens to drain off the excess pressure set up inside the injection pump through duct (6) and
internal channel (12). The piston of advance variator (21) therefore returns to its original position to
cancel out the increase in advance and restore normal operating advance settings.
Marea-Marea Weekend
ft TD
Engine
75
Fuel system
10.
INERTIA S A F E T Y S W I T C H
Foreword
The vehicle is fitted w i t h an inertia
switch located inside the cabin to i n crease the safety of occupants during
collisions.
This sensor reduces the possibility of
fire (due to emerging fuel) by cutting off
the earth connection of the engine c u t-out solenoid relay excitation circuit on
the fuel pump.
Principle of operation
NC NA C
1 . Inertia switch
2. Junction unit
3. Engine cut out solenoid on injection
pump
4. FIAT CODE control unit
5. Relay
6. Battery
7. Cut-out solenoid fuse
8. Master fuse (IGN)
9. Ignition switch
C= Common terminal
N.C. Normally closed
N.A. Normally open
A steel ball fitted inside a tapered housing is normally held in locked position
through the attractive force of an adjacent magnet. In the case of specific acceleration loads, the ball is released
from the magnetic attraction and gradually emerges from the tapered mount,
following an upward movement according to cone angle.
A quick-release mechanism above the
ball makes up a normally closed (N.C.)
electrical circuit. When the mechanism
is struck by the ball, it changes position
from an N.C. circuit to a normally open
circuit (N.A.) and thus breaks the earth
connection of the relay supplying the
engine stall solenoid on the injection
pump
In the case of a violent collision, the ball
breaks loose from the magnetic attraction
and opens the normally closed electrical circuit ( N . C ) . This in turn breaks the earth c o n nection of the excitation circuit of the relay
supplying the engine cut-out solenoid.
To reset the circuit earth connection, push
back the seat and press the switch until it
clicks on.
After even an apparently light collision, if a smell of petrol is noted or fuel leaks are seen, do not
activate the switch again until the fault has been found and corrected in order to avoid the risk of
fire.
If no leaks are noted and the vehicle is able to start, press the button to re-activate the earth connection to the exitation circuit of the relay supplying the engine cut- out solenoid on the injection
pump.
Engine
Marea-Marea Weekend
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75
Fuel system
10.
E L E C T R O N I C P R E - H E A T I N G S Y S T E M FOR E N G I N E S T A R T - U P
The electronic preheating control system consists of:
- An electronic control unit in the engine bay beneath the battery tray;
- four g l o w plugs located in the cylinder head combustion prechamber;
- a start-up wait warning light located on the instrument panel.
- a coolant temperature sensor located on the thermostat case.
The system is designed to perform the following functions:
1. Supply a high preheating current from the battery to the glow plugs before and after engine start-up
for a variable amount of time depending on coolant temperature.
The preheating function increases combustion prechamber temperature to levels which w i l l facilitate
fuel self-ignition and thus make starting easier.
2. Keep the glow plug warning light on for a varying amount of time depending on coolant temperature:
from 1.5 - 4.5 seconds at 40 - 80 C up to a maximum of 30 - 35 seconds at -30C.
Then engine may be started up when the warning light goes off.
3. If the engine is not started up after the warning light goes off, the electronic control unit supplies the
glow plugs for a further 10 seconds (maintenance time).
4. After starting up the engine, the control unit continues to supply the glow plugs for a variable amount
of time depending on coolant temperature (post-heating time). This time may vary from a maximum
of 200 seconds for temperatures lower than 10C d o w n to a minimum of 0 seconds for temperatures
higher than 80C.
5. If one of the glow plugs or its supply lead short circuits (absorption higher than 2 4 0 A ) , the control
unit immediately cuts off the current supply.
If the absorption is between 140 and 240 A, the preheating control unit cuts off the g l o w plug power
supply after 5 - 6 seconds.
5 Warning light
6. Heater plugs
7
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10.
E M I S S I O N CONTROL D E V I C E S - D E G U S S A O X I D I S I N G C A T A L Y T I C C O N V E R T E R
The oxidizing catalytic converter is a simple, effective post-treatment device. It oxidizes CO, HC and particulate and converts them to carbon dioxide ( C 0 ) and steam ( H 0 ) .
The barrel-shaped Degussa converter consists of a ceramic honeycomb block with its chambers impregnated with platinum, a catalyst of oxidation reactions. The total volumetric capacity is equal to 600 c m
w i t h a density of 400 chambers per square inch.
Exhaust gases flowing through the chambers heat up the catalyst and trigger the conversion of pollutants to inert compounts.
The chemical oxidation of CO, HC and particulate occurs at temperatures of more than 200C. It is not,
however, advisable to exceed 350C because at this temperature the sulphur in the diesel begins to oxidize and give rise to sulphur dioxide ( S 0 ) and trioxide ( S 0 ) responsible for acid rain.
If the catalytic converter is the correct size, temperature is kept d o w n while achieving maximum conversion of polluting emissions and restricting the oxidation of sulphur compounds.
The catalytic converter also deals with saturated hydrocarbons and aromatic hydrocarbons in particulate, namely carbon (soot), metals, water and sulphur compounds, are eliminated in exhaust emissions.
The efficiency of reduction of individual pollutants is as follows:
- 50% for CO,
- 50% for HC,
- 35% for particulate.
2
P4F09GJ01
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Marea-Marea Weekend ft TD 75
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10.
EXHAUST GAS R E C I R C U L A T I O N S Y S T E M E.G.R.
Introduction
This system permits a proportion of exhaust gases (5 - 15%) to be directed to the intake under certain
engine operating conditions.
This action dilutes the fuel mixture with inert gases to lower peak temperature in the combustion chamber. This minimizes the formation of nitrogen oxides (NOx), to produce a reduction of 30 - 50% at the
exhaust.
Exhaust gas recirculation is possible only at medium-low loads when the air-fuel mixture is very high
and engine operation is not affected by the presence of inert gases in the place of air.
The recirculation system is controlled by an ECU (1) that receives signals from a potentiometer on accelerator lever (2) and from rpm sensor (3) and coolant sensor (4). It then sends out a command signal
to the Borg Warner modulating solenoid responsible for EGR control. ( 6 ) .
The solenoid, connected to the atmosphere via a filter, relays a greater or smaller vacuum from the vacuum pump of brake servo (5) to the Pierburg EG R valve (7) on the basis of the command signal received.
If the vacuum is sufficient, this valve opens to establish communication between the exhaust manifold
and the inlet manifold.
The amount of recirculated gas can therefore be altered by adjusting the opening of the Pierburg EGR
valve in continuous manner, consulting memory maps of opening levels on the basis of signals received.
Components of E G R system
1. Electronic control unit
2. Accelerator lever potentiometer on injection pump
3. Rpm sensor
4. Coolant temperature sensor
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10.
OPERATION OF E X H A U S T GAS R E C I R C U L A T I O N S Y S T E M C O M P O N E N T S
Electronic control unit
The electronic control unit is identified by the code MCR 109A for vehicles fitted with an air conditioner
and by the code MCR 108A for vehicles without an air conditioner (only heated).
This digital microprocessor unit receives data on engine service conditions that are sent in by the three
engine load sensors (accelerator lever position sensor, rpm sensor and coolant sensor).
On the basis of these signals, ECU (C) is able to govern the modulator solenoid using a square wave signal on the basis of its internal EGR maps.
The mapping is represented by level curves. Vacuum values in mmHg (A) alter according to accelerator
lever position and rpm.
A temperature correction is made at a later stage, again by the control module. This correction (B) corresponds to a zeroing of intensity values for temperatures less than 20C, and a reduction ranging linearly
from 100% to 0% for temperatures from 20C to 80C. For coolant temperatures in excess of 80C, no
solenoid control current corrections are made.
If the vehicle is fitted w i t h an air conditioner, the control unit is also interfaced with the heating/ventilation system. In the case of maximum power demand, recorded by the accelerator lever position sensor, it
cuts off the supply to the compressor electromagnetic coupling.
The control module also includes a connector for the Fiat-Lancia Tester serial output. During maintenance, this can be used to detect any operating faults.
P4F11GJ01
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Engine
Fuel system
10.
Accelerator lever potentiometer on injection pump
Potentiometer (2) fitted to the injection
pump measures accelerator lever angular position and informs ECU (1) about engine
load.
Lever rotation alters potentiometer internal
resistance. For a constant power supply of
3.7 0.2 V supplied by the ECU, therefore,
an output voltage ranging from 3.1 V w h e n
idling, to 1 - 1 / 4 V upon maximum load (3) is
obtained.
This voltage represents a significant engine
operating data item and is used by the ECU to
control opening of the EGR Pierburg valve.
P4F12GJ01
Rpm sensor
The rpm sensor (2) fitted to the crankcase by a phonic wheel fitted to the crankshaft is a passive electromagnetic recorder with a gap of 0.25 - 1.3 mm between the top of the ring gear teeth and the w i n d i n g .
Each time a tooth of the ring gear passes it, the sensor produces a sinusoidal wave form voltage signal
that varies in amplitude and frequency according to engine rpm (case A ) .
ECU (1) stabilizes positive half-wave amplitude and cuts out the negative half-wave (case B).
P4F12GJ02
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10.
Coolant temperature sensor
The sensor, fitted to the thermostat case, consists of an NTC resistance that alters its resistance value in
inverse proportion to temperature, as shown in the diagram ( 3 ) .
ECU (1) supplies NTC sensor (2) according to the resistance value, and measures coolant temperature
on the basis of temperature changes proportional to the intensity of the current flowing through the sensor in order to correct modulator solenoid commands.
This prevents the engine taking in an excessive amount of exhaust gas before optimal service temperature has been achieved, or when very severe weather conditions prevent this occurring.
This sensor therefore ensures safe engine operation during the stage following start-up by preventing a
drop in the intake oxygen load. This ensure the best possible conditions for combustion while the engine is warming up.
P4F13GJ01
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10.
Diagram showing electropneumatic system
15/54
"i
-ir-
7W/
1.
2.
3.
4.
5.
6.
7.
6 5 8
1 2
11
8.
9.
10.
11.
12.
13.
14.
10
Tester socket
The following connectors for connection
with the Fiat/Lancia Tester (F.L.T.) are located on the right rear of the engine bay:
1. Emergency start-up point connected to
the Fiat CODE system (refer to section
55).
2. E.G.R. system tester point.
Connector (2) allows serial communication
between the E.G.R. control unit and Fiat Lancia Tester to carry out full system electronic
diagnosis.
14
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10.
C H E C K S - A D J U S T M E N T S AND R E P A I R S
Full electronic diagnosis of the E.G.R. device can be carried out using a Fiat/Lancia Tester.
Connect the Fiat/Lancia Tester to the control unit as follows:
1. Connect the Fiat/Lancia Tester to an ADT 101A adaptor and M11 - B module.
2. Supply the Tester through the cigar lighter or by connecting it directly to the battery (a special lead is
provided for this purpose).
3. Connect the Tester socket to the test point.
CHECKING
AND
ADJUSTING
POTENTIOMETER
POSITION
ON
INJECTION
PUMP
Foreword
Carry out the following operations on the vehicle after making a braid (if one is not available) to be fitted
between the control unit-potentiometer connection lead connectors in order to record voltage at the potentiometer terminals in parallel, and a 12 mm feeler gauge to be fitted between the tab on the rpm c o n trol lever and the stop screw, (see details on following pages).
Specifications for making the t w o parts are given below.
Connection braid
1. Bosch
minitimer
connector
l\T 1254487003
Cap N 1280703022
Contacts N 1280703022
2. Bosch
minitimer
connector
N 1284485112
Cap N 1280703022
Contacts INT 1/23341/44
12mm
o 2 oj|
1
Feeler gauge
15
Engine
75
Fuel system
i guijw
output voltage.
After positioning the potentiometer, turn the rpm adjustment lever slowly from M I N to M A X position
and simultaneously check output voltage (terminals 1 and 2), w h i c h should gradually increase from 0.2
to 3.5 0.2 V.
16
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10.
P4F12EX01
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REMOVING-REFITTING
PUMP
Removing
INJECTION
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|| TD 7 5
Fuel system
10.
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10.
19
Engine
Fuel system
10.
1. Disconnect the fuel delivery (1) and return (2) lines from the pump, then disconnect the accelerator cable from the arrowed points and place to one side.
2. Disconnect electrical connections indicated.
3. Loosen bolts securing the retaining plate
to the injection pump pulley.
4. Use tools 1860831001 and 1860964000
to release the injection pump pulley retaining nut, then remove the pulley from
its seat.
20
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10.
21
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10.
22
Publication
no.
506.763/03
Marea-Marea Weekend f | 3f |t
TD
Engine
75
Fuel system
10.
NOTE
Timing is correctly adjusted when, with piston no. 1 at TDC, notch (1) is in the position
shown in the figure (for engines up to no.
416449, exact notch position may differ by
3 (engine) or Vi tooth).
NOTE
Fit the belt so that the arrow faces in the direction of engine rotation.
4. Apply a force at the arrowed point on the automatic tensioner. Move the mobile tensioner indicator (1) to position of maximum tension (facing
up), then tighten the belt tensioner retaining nut.
23
Engine
Fuel system
10.
24
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10.
PLUG
25
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Fuel system
10.
Unscrew bolts (1), loosen bolt ( 2 ) , then remove the battery tray from the engine bay
NOTE
C H E C K I N G AND A D J U S T I N G
IDLE S P E E D
sequence
ENGINE
26
Marea-Marea Weekend ft
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Engine
Fuel system
10.
BLEEDING THE FUEL CIRCUIT
If the engine stalls due to lack of fuel, the low pressure lines are detatched or the fuel filter is replaced,
proceed as follows:
- unscrew the delivery lines on the injectors (A) by a few turns;
- run the engine until fuel emerges from the open injector fittings;
- keep the engine running but close the injector fittings.
If the engine does not start, check all fuel line joints (D and fittings (E). Replace seals in order to eliminate air leaks
DRAINING W A T E R FROM F U E L F I L T E R
Proceed as follows to drain water from the fuel filter:
- unscrew water drain screw (B) beneath the filter;
- unscrew air bleed screw (C) above the filter;
- allow water and fuel to emerge until the fuel is clear of water, then tighten screws (B) and ( C ) .
REPLACING C A R T R I D G E F U E L F I L T E R
The fuel filter must be replaced at the intervals specified in the programmed maintenance plan. Proceed
as follows to replace:
- lubricate the cartridge gasket;
- refill the diesel filter cartridge (self-bleeding time is thus reduced)
- screw the cartridge onto the mount and tighten through 6/8 of a turn (tightening torque 1.3-1.6
daNm).
P4F27GJ01
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10.
FAULT DIAGNOSIS
Introduction
When working on the engine, the main differences between diesel and petrol units are as follows:
1 . on a Diesel engine, fuel is supplied by an injection pump and the system also includes:
- a tank with fuel inlet and outlet lines;
-
a fuel filter;
four injectors with delivery and return lines;
a preheating device for cold starts;
a device for stopping the engine.
The injection pump is the most reliable part of the fuel system because its components are subject to very low wear and it cannot easily be incorrectly
adjusted.
Before working on the injection pump, it is therefore advisable to check the operation of the other system
components.
2..The Diesel engine combustion process develops very high operating temperatures within the engine.
Because the fuel inevitably contains traces of sulphur, this gives rise to:
- a greater tendency (compared to petrol engines) to produce soot and thus greater wear on mobile
parts, particularly those closest to the combustion chamber;
- a higher tendency for piston rings to become stuck in their seats.
It is very important to replace the oil filter at intervals. Use only the recommended amount of lubricant oil and ensure the oil is changed at the mileages shown in the programmed
maintenance
plan. If the vehicle is used under difficult conditions (mainly around town, continual use in hilly
areas, towing trailers or caravans, routes in dusty areas) the oil must be changed more often.
Ensure that the injectors are always working efficiently to ensure fewer unburnt products are left
during engine operation.
3. The Diesel engine combustion process also leads to more engine noise (*) and combustion knock is
clearly audible from outside.
Although this phenomenon has been greatly reduced by present-day prechamber engines, noise is
still present at low speeds but tends to disappear at medium-high speeds.
NOTE
amount
4. An indirect injection Diesel engine needs a prechamber preheating device (fast glow plugs and an
electronic control unit) to ensure the fuel ignites more easily when cold and the engine starts more
easily.
A special device is fitted to turn the engine off (achieved by cutting off the fuel flow to the injection
pump). This consists of a solenoid which allows fuel to f l o w through to the injection pump when the
ignition switch is turned on and cuts off the fuel flow when the ignition switch is turned to stop.
(*) Engine running noise: this is caused by an excessive fuel pressure gradient, i.e. the ratio between
pressures developed by the fuel and corresponding crankshaft angles of rotation.
28
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10.
DIAGNOSING F A U L T S IN D I E S E L F U E L S Y S T E M
This fault diagnosis is applicable only if the engine is serviced and the electrical equipment
been properly
checked.
ANOMALY
CAUSE
Tank empty,
blocked
tank
REMEDY
ventilation
tank
ventilation
Water in fuel
Water in fuel
has
pump
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ANOMALY
30
CAUSE
REMEDY
Fuel inlet and outlet lines in the injection pump incorrectly connected
Replace filter
Water in fuel
Publication no.
pump
506.763/03
Marea-Marea Weekend
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10.
V
ANOMALY
CAUSE
Tank ventilation defective
Replace filter
Injectors defective
REMEDY
pump
pump
31
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10.
ANOMALY
CAUSE
REMEDY
Injectors defective
Replace filter
Injectors defective
Incorrect injection
(delayed)
pump timing
Injectors defective
Injectors defective
Incorrect injection
(advance)
pump
32
pump
Incorrect injection
(delayed)
pump
pump
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CHECKING EXHAUST
ING O P A C I M E T E R
SMOKE
US-
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Contents
10.
page
FUEL SYSTEM
- INTRODUCTION
- SYSTEM OPERATION
,
- Preheating
- Starting
- Driving
- Transitory situations
- Adjusting ignition advance
- Exhaust gas recirculation (E.G.R.)
- System faults
- Fault diagnosis
1
4
4
5
5
5
5
6
6
6
- COMPONENT DESCRIPTION
- Injection pump
- Pump actuator position sensor
- Injection advance actuator
- Engine stop solenoid
- Controlled injector
- Preheating control unit
- Accelerator pedal potentiometer
- Air f l o w meter (debimeter)
- Brake pedal sensor
- Clutch pedal sensor
- Engine and phonic Wheel rpm
fsensor
- Coolant temperature sensor
- Speed sensor
;
- E.G.R. system.
- BORG WARNER vacuum modulator
solenoid
- Oxidising catalytic converter
- CONTROL UNIT PIN-OUT
- Location of fuel system components
- Wiring diagram
- Air conditioner
'
6
6
8
9
10
10
11
11
12
13
13
15
17
18
19
20
22
23
24
13
14
14
15
Marea-Marea Weekend
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10.
INTRODUCTION
The most important features of the fuel system on the 2387 TD version w i t h indirect injection are as f o l lows:
- fuel injection managed by electronic control unit (ECU);
- turbocharging via IHI turbocharger and intercooler;
- cross flow inlet/outlet ducts;
- exhaust gas recirculation system (EGR) to eliminate NOx;
- oxidising catalytic converter to eliminate particulate, CO and HC.
These devices ensure the version meets regulations (EC STAGE 2) while also ensuring better running
economy, reduced engine noise and better vehicle handling.
P4F01FJ01
1.
2.
3.
4.
5.
6.
7.
Battery
Relay
Clutch pedal switch
Brake pedal switch
Accelerator potentiometer
Speedometer
Electronic control unit
10.
11.
12.
13.
14.
15.
16.
Controlled injector
Heater plugs
Borg-Warner modulator valve
Bosch injection pump
Debimeter
Glow plug preheater unit
E.G.R. valve.
Engine
Marea-Marea Weekend ft
Fuel system
10.
Electronic management of the injection pump allows moment by moment computing of fuel quantity
and injection advance, direct control of driving conditions and real-time response to changes in input
parameters.
A BOSCH MSA11 electronic control unit (1) gathers the following information:
-
According to input parameters, control unit (1) consults internal memory maps and corrects output signals accordingly in order to control:
-
The control unit is also responsible for the immobilizer function (Fiat CODE). This is performed by a specific control unit (Fiat CODE) (18) able to communicate w i t h electronic control unit (1) and an electronic key with a sender unit w h i c h sends out an identification code.
Whenever the key is turned to STOP, the Fiat CODE system de-activates electronic control unit (1) fully.
When the key is turned to MAR, the following operations take place in order:
1 - control unit (1) (whose memory contains a secret code) requests the Fiat CODE to send back the
secret code to de-activate the function block;
2 - the FIAT CODE control unit responds by sending out the secret code only after receiving an identification code transmitted by the ignition key;
3 - secret code identification allows de-activation of the lock on the electronic control unit (1) so that
normal operation can resume.
NOTE
Due to the presennce of the Fiat CODE D O N O T C A R R Y O U T tests using another electronic
control unit during fault diagnosis and/or functional checks. In this case, the Fiat CODE would
transfer its (secret) identification code to the test control unit, which could not then be used on
other vehicles.
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10.
INPUT AND O U T P U T S I G N A L S B E T W E E N CONTROL U N I T / S E N S O R S AND A C T U A T O R S
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
Rpm sensor
Rev counter
Diagnostic socket
Injection system warning light b u l b
Borg Warner solenoid
Heating/ventilation system
Glow plug warning light
Glow plug control unit
FIAT CODE control unit
Battery
Engine
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10.
SYSTEM OPERATION
In this section we will discuss the strategies adopted by the electronic control unit under a range of engine service conditions.
Preheating
Glow plugs (4) are controlled and timed by the injection electronic control unit (19) via a glow plug
control unit (6).
The time for which the glow plugs are activated (and for which the warning light on the instrument panel is lit) is directly dependent on engine coolant temperature.
The grace period (i.e. period when engine may be started after the warning light has gone out without
repeating thre preheating cycle) lasts about 15 seconds.
Injection control unit (19) also controls a post-heating stategy whereby the g l o w plugs are still supplied
with power after start-up for a time computed on the basis of engine coolant temperature (up to 60 C)
and rpm (up to 1300 rpm).
This specific strategy allows engine heating time and hydrocarbon emissions to be reduced following
start-up.
1. Borg Warner
modulator
valve
2. Bosch injection pump
3. Controlled injector
4. Glow plugs
5. EGR valve
6. EGR valve
7. Coolant temperature sensor
8. Rpm sensor
9. Speed sensor
10. Clutch pedal sensor
1 1 . Brake pedal sensor
12. Accelerator potentiometer
13. Speedometer
14. Glow plug warning light
bulb
15. Injection system warning light
16. Rev counter
17. Relay
18.
19.
20.
21.
22.
Battery
Injection control unit
Diagnostic socket
Air f l o w meter (debimeter)
Catalytic converter
Marea-Marea Weekend
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10.
Starting
During engine start-up, control unit (19) does not recognise the signal from accelerator pedal potentiometer ( 1 2 ) ; acceleration does not therefore influence the start-up procedure.
Fuel flow is determined solely by rpm and coolant temperature.
During start-up, the control unit determines injection advance time on the basis of a signal from coolant
temperature sensor (7), ignoring the signal from controlled injector (3).
Driving
When the vehicle is being driven, ECU (19) computes fuel f l o w on the basis of signals from accelerator
pedal potentiometer (12) and rpm sensor (8). By means of a rotary electromagnetic actuator, the ECU
moves the regulation cursor, which in turns controls effective pump stroke and thus fuel quantity.
The quantity of fuel to be injected is corrected on the basis of:
- signal from debimeter (21) (intake air quantity) in order to obtain maximum possible fuel f l o w w i t h out exhaust smokiness
- diesel temperature, in order to compute the exact weight of fuel injected. Although the pump controls
the volume of fuel, it is still necessary to compute the weight of fuel injected, which depends on density (and thus temperature) in order to caculate the air/fuel ratio. As an example, 1 cc. of diesel has a different weight at 0 "C compared to the same volume at 50 C.
- intake air temperature and atmospheric pressure, in order to optimise the air/fuel ratio t o engine service conditions.
Maximum output is limited by following a maximum torque curve, in turn dependent upon engine rpm.
The actual position of the fuel quantity actuator, required for sending the exact amount of fuel t o injectors, is recorded by an inductive sensor fitted to the actuator. The ECU compares actual data w i t h theoretical data to correct actuator position until the actual position coincides with the theoretical position.
Transitory situations
Control unit (19) implements a strategy designed to modulate engine operation during transitory situations of acceleration and or deceleration, avoid unstable operating conditions (jerks and juddering) and
improve handling.
The ECU gathers information on gear currently engaged from the engine rpm and vehicle speed sensor,
while a switch on the clutch pedal provides it w i t h data on gear changes. Whereas sudden changes in
input parameters (accelerator pedal and engine rpm) bring about abrupt changes in fuel f l o w w i t h c o n ventional systems, w i t h this system the ECU controls fuel delivery gradually to alter the output curve in
favour of improved handling.
A signal from the brake switch is compared with a signal from the accelerator pedal. When b o t h signals
are present a t l t i e same time tor longer than 0.6 seconds below a speechof T400 rpm, the c o n t r o l unit
considers this a fault situation and cuts in to reduce speed to idle level.
When this fault occurs, a quick press of the accelerator pedal restores the ECU to normal management
status.
A d j u s t i n g injection a d v a n c e
Advance (injection point) is defined by the quantity of fuel injected, engine rpm, coolant temperature
(up to 60 C) and atmospheric pressure sensor signal.
Injection control unit (19) compares injection start point, a signal from controlled injector ( 3 ) , w i t h the
theoretical instant of injection in order to govern a solenoid. This in turn modulates pressure xicling^Qrj
advance variator piston in order to adjust actual advance until it coincides with the theoretical value.
Engine
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10.
Exhaust gas recirculation (E.G.R.)
An exhaust gas recirculation system (E.G.R.) has been fitted to reduce NOx (nitrogen oxide) emissions
further.
On the basis of fuel flow, rpm, intake air temperature and coolant temperature (from 60 C), injection
control unit (19) governs a BORG WARNER vacuum modulator valve ( 1 ) , which in turn controls the
E.G.R. valve (5).
E.G.R. valve (5) moves a plunger to regulate the f l o w of burnt gases from the exhaust manifold to the intake manifold.
These gases are mixed with the intake air and then introduced into the cylinders. This achieves t w o results:
- less air is introduced;
- combustion temperature is reduced (due to the presence of inert gases) to reduce the formation of
NOx (nitrogen oxides).
Injection control unit (19) is provided with constant information on recirculated gas quantity by debimeter (21): if intake of a given quantity of air (Qam) is required for a given rpm and the value relayed
by the debimeter (Qar) is lower, the difference (Qgr) provides recirculated gas quantity.
Qam - Qar = Qgr
Qam
Qar
Qgr
The absolute atmospheric pressure signal is used to govern the modulator solenoid. It tells the control
unit when the vehicle is being driven at altitude so that the recirculated gas quantity can be reduced to
prevent engine smokiness.
System faults
When part of the system stops working (signal not produced or signal not properly recognised), the
driver is informed of the fault by means of a message displayed on the infocenter screen.
In the case of signals crucial to implementation of the in jection strategy, the injection control unit is able
to replace the parameter with an average value saved in the unit memory (recovery value). Performance
is reduced but operation is nevertheless safe for the engine.
Fault diagnosis
For system testing, serial line (20) is used for connection to a Fiat/Lancia Tester and a Computerised
Test Station. The module required for the injection system is coded M 3 4 A
In an electronic injection pump, the hydraulic head w i t h high pressure pump and operating parts are the
same as used on a mechanical injection pump.
On this electronically controlled pump, flow is governed by an electromagnetic actuator (2) (see drawing on page 7). Actuator rotation is converted into linear movement of regulation cursor (6) by means of
a cam coupling.
The f l o w to be sent to the injectors is computed according to accelerator pedal position (i.e. signal
transmitted by potentiometer connected to the pedal) and the number of revs recorded by the sensor.
Inductive sensor (8) fitted to the regulation cursor control shaft informs the control unit of the rotation
angle set by the electromagnetic actuator (2) and consequently the position of regulation cursor ( 6 ) .
Marea-Marea Weekend
ft
Engine
Fuel system
10.
4
P4F07FJ01
1.
2.
6.
4
5.
Pump cover
Electromagnetic actuator
51 UP solenoid
D i s t r i b u t o r piston
Injection advance actuator
6. Adjustment cursor
7. Injection advance adjustment piston
8. Mobile ring
^Tl^eJefeiK^rmg^
After comparing the position of regulation cursor (6) transmitted by sensor (8) with the position saved
in its memory, the ECU performs a correction, taking into account fuel temperature recorded by sensor
(10) and thus fuel density, until actual position of regulation cursor (6) coincides w i t h theoretical value.
The exact amount of fuel required for the specific driving conditions is thus obtained to achieve: peak
performance w i t h good fuel economy and minimum levels of smokiness.
Regulation of injection point (advance) depends on the quantity of fuel to be injected, engine rpm and
engine coolant temperature.
The^ontroJfed injector informs the control unit on actual injection advance, i.e. point at w h i c h needle
valve begins to move. On the basis of these signals, the ECU corrects the advance set by the injection
advance actuator until the theoretical level is achieved.
Engine
Marea-Marea Weekend
fti>
Fuel system
10.
Pump actuator position sensor
Principle
\ CT ^
7
^ZThfc&
tillfW$
P4F08FJ02
of
operation
P4F08FJ01
If disc (4) is moved, the intensity of magnetic field (3) changes; if magnetic field (3) is to be maintained
constant, the intensity of current sent to coil (1) must be changed. This current change is proportional to
movement S of disc ( 4 ) .
Description
of
operation
The core is specially shaped in this particular case (see figure below).
Two coils L1 and L2 are w o u n d onto the core. Coil L2 w i t h fixed ring (2) forms the reference system.
Coil L1 w i t h mobile ring (1), integral with pump actuator shaft, constitutes the measurement system.
The control unit sends an alternating current of fixed amplitude and frequency to coil L2. Coil L1 receives the same current offset by 180 so that the sum of the t w o currents is zero.
When ring (1) shifts, magnetic field intensity alters. This brings about a change in the amplitude of current in coil L1 and the sum of currents becomes other than zero.
At this p o i n t , the ECU alters the current sent t o c o i l L1 in order to restore the sum of t h e t w o c u r rents t o zero. The size of the c h a n g e in current t o coil L1 is p r o p r t i o n a l to t h e m o v e m e n t of m o bile r i n g h e c o n t r o l u n i t t h u s o b t a i n s i n f o r m a t i o n on p u m p actuator p o s i t i o n .
Marea-Marea Weekend
ft TO
Engine
Fuel system
10.
Engine
Marea-Marea Weekend
ft
Fuel system
10.
Engine stop solenoid
1.
2.
3.
4.
5.
6.
7.
8.
Outlet hole
Distributor piston
Distributor head
Stop solenoid
High pressure chamber
Inertia switch
Injection electronic control unit
Relay
Controlled injector
The controlled injector informs the injection
control unit on actual injection advance setting (start of injection phase, or beginning of
needle valve movement). On the basis of this
signal, the control unit corrects the advance
set by the injection actuator until the theoret-
equipped w i t h a device for identifying the exact moment injection begins in addition to
wiring to relay the signal and inform the i n jection control unit.
The injector contains coil ( 2 ) , needle valve
(3) and regulation pin (1). The coil is electrically powered and generates a magnetic f l o w
that affects the needle valve ( 3 ) . When the
valve begins to open, the nozzle for fuel i n jection, magnetic f l o w in coil (2) alters. The
control unit identifies this point as the injection start instant and uses this as a basis for
its advance regulation strategy.
10
Publication
no.
506.763
Marea-Marea Weekend
Engine
ft TD
Fuel system
10.
Preheating control unit
The g l o w plugs are controlled by a preheating control unit controlled directly by the i n jection control unit.
This contains a "smart" relay that sends responses ("feedback") to the electronic injection control unit, which is thus kept up to
date on faults in the preheating control unit
or short circuits to earth in the g l o w plugs.
[pi
[r
] i
a ]
a
0
1 1
i DD
D
Inl
1. Vehicle earth
3. Ignition switch ( + 1 5 )
4. Pump electronic control unit - pin 8 (pre-postheating activation)
5. Pump electronic control unit pin 41 (diagnosis)
8. Battery positive
G. Battery positive
11
Engine
Marea-Marea Weekend ft
Fuel system
10.
Air flow meter (debimeter)
This device measures the amount of air taken up by the engine and converts the value to an electrical
signal, which is then relayed to the control unit.
This signal is used to:
- calculate the amount of fuel to be injected in order to achieve the highest possible fuel flow compatible with a smoke-free exhaust;
- control the amount of exhaust gas recirculated through the EGR valve.
Calculated intake air quantity is used to carry out an indirect measurement of the quantity of exhaust gas
recirculated through the EGR valve.
If intake of a certain amount of air (Qam) is required for a given rpm, a n d t h e l e v e l s e n t hy d e h i m e t e n
(Qar) is lower, the difference (Qgr) corresponds to the quantity of gas recirculated.
Qam - Qar = Qgr
Qam = Theoretical air quantity in memory
Qar = Actual air quantity
Qgr = Recirculated gas quantity
The quantity of air taken up by the engine exercises a thrust on floating plate (1) and this takes up a very
specific angular position proportional to the pressure exercised by the incoming air f l o w (quantity of air
taken up by the engine) and thrust of counter spring ( 2 ) .
This angular position is converted into a voltage signal by potentiometer (3) connected rigidly to floating plate spindle.
Compensation plate (4) is coupled to a floating plate with the same effective surface area. This compensates for pressure fluctations due to alternating intake phases for the different cylinders because these
act on both surfaces of the floating plate. In this way, forces arising are cancelled out and do not affect
the measurement.
The air flow meter houses a temperature sensor w i t h an NTC resistance. A signal from this is used by the
ECU to compute air density and hence specific weight. This signal allows the control unit to c o m pensate for injection pump regulation when the air/fuel weight ratio alters in order to obtain full c o m hug^QP
12
||
Publication no.
506.763
Marea-Marea Weekend
Engine
ftn>
Fuel system
10.
Brake pedal sensor (1)
P4F13FJ02
The engine rpm sensor is fitted on the crankcase and faces a phonic wheel, located inside the crankcase,
fitted to the crankshaft.
The sheet steel phonic wheel is fitted w i t h 5 reference dowls located 72 apart on the outer part of the
circumference.
_4fly^eaJ:hese^doAflml&jar teeth pass beneath the sensor, the gap changes to bring about a change4rr4be
magnetic flux. This induces a current in the sensor spool coils.
This signal is sent to pin 47 of the control unit to measure rpm.
13
Engine
Marea-Marea Weekend ft
Fuel system
10.
Coolant temperature sensor
Engine coolant temperature is measured by a sensor w h i c h consists of an NTC resistance. This alters its
resistance in inverse proportion to temperature, as shown in the graph.
The ECU measures the voltage change proportional to the intensity of current f l o w i n g into the sensor
through terminal 53.
The sensor must not be screwed in tighter than a torque of 15 Nm.
P4F14FJ01
Speed sensor
The speedometer sensor fitted on the gearbox sends a signal to the instrument panel in
order to operate the speedometer and also
sends a signal to terminal 29 of the injection
control unit.
The speedometer s e n s o r p r o v i d e s t h e FCU
^A/ith information on vehicle s p e e d ~ a n d , r o -
14
Marea-Marea Weekend
ft
Engine
Fuel system
10.
E.G.R. system
The system consists of a PIERBURG E.G.R. valve (1) and a BORG WARNER vacuum modulator
solenoid (2).
The ECU governs the BORG WARNER modulator solenoid on the basis of fuel flow, engine rpm, intake
air temperature and coolant temperature (up to 60 C). This modulated vacuum controls the E.G.R.
valve, w h i c h in turn moves a plunger to regulate the flow of burnt gas from the exhaust manifold t o the
intake manifold.
The ECU is kept constantly informed about recirculated gas quantity using data from the f l o w meter.
The atmospheric pressure signal (via a sensor inside the injection control unit) is important for control of
the BORG WARNER modulator valve because it recognises when the vehicle is being driven at altitude
so that the recirculated gas quantity can be reduced to prevent the engine from smoking.
P4F15FJ01
15
Engine
Fuel system
Marea-Marea Weekend ft
^
10.
Operation
Vacuum reaches chamber E from duct F (case I), because the force of spring (6) acts on mobile unit (4)
and shunt valve (5) opens up a passage.
The vacuum then flows through compensation port D to chamber B and surfaces of disc plunger (3).
Once the forces acting on disc (3) are balanced, the atmospheric pressure in duct A enters chamber B to
move the mobile unit downward (case II). The plunger of valve (5) therefore closes duct F and brings
chamber E into communication with chamber C at atmospheric pressure to reduce the vacuum level in
duct E.
The reduced vacuum level or increased absolute pressure in chamber E causes mobile unit (4) to rise
(case I) to close passage C. Valve (5) therefore takes up an ideal positionJEjn communication w i t h F)
for the cycle to be repeated.
"
^
P4F16FJ02
16
Publication no.
506.763
Marea-Marea Weekend
ft
Engine
Fuel system
10.
Oxidising catalytic converter
The oxidising catalytic converter is a simple and effective post-treatment device used to oxidise CO, HC
and particulate, w h i c h are converted to carbon dioxide C 0 and water vapour H O.
The catalytic converter used is oval in shape, w i t h a corrugated, herringbone steel mount impregnated
w i t h Palladium and a silicon alloy. Its volumetric capacity is 1.4 litres and its density is 35 cells per
square centimetre.
Exhaust gases flowing through the chambers heat the catalytic converter to trigger conversion of p o l l u tants to inert compounds.
Individual pollutants are reduced with the following efficiency:
- 50% for CO;
- 50% for HC;
^
- 30% for particulate, which is a group of combustion residues (partially condensed at a temperature
less than 52C) made up of:
1. carbon (ash); 2. saturated hydrocarbons; 3. aromatic hydrocarbons; 4. metals; 5. water; 6. sulphur
compounds.
The catalytic converter treats the saturated and aromatic hydrocarbons ( 2 - 3 ) while the remaining elements are eliminated through the exhaust.
From 350 C, the fuel sulphur content is oxidised to sulphur dioxide SO and sulphur trioxide S 0 ,
When these come into contact w i t h water vapour, they form the sulphurous and sulphuric acids r e s p o n sible for acid rain.
When fuel sulphur content is reduced from its present 0.3% to 0.05%, all Diesel engine exhaust emissions will be fully converted.
The converter service temperature w i n d o w within which the highest conversion rate compatible w i t h
minimum sulphur oxidation occurs is between 200 C and 350 C.
If the catalytic converter is of the correct size, temperature can be controlled and maintained w i t h i n the
optimal service w i n d o w , limiting oxidation of sulphur compounds.
The catalytic converter also eliminates the characteristic exhaust gas smell.
2
T4FT7FJ0T
17
Engine
Marea-Marea Weekend
ftn>
Fuel system
10.
~ ~
0
5 5 37 19
20 38
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
Fuel f l o w actuator
Fuel f l o w actuator
Engine stop solenoid
Infocenter
Controlled injector
Solenoid for E.G.R..
N.C.
Glow plug control unit activation
A.C. compressor
Injection advance actuator
Glow plug activation warning light
Earth for controlled injector
Common sensor earth
Cursor position sensor
Main relay
Control unit power supply via relay
Control unit power supply via relay
Earth
Earth
N.C
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
22
23.
24.
25.
26.
27.
N.C.
N.C.
N.C.
Idle switch on accelerator peda
Brake light switch
N.C.
49.
50.
51.
52.
53.
54.
55.
N.C.
Signal for tachometer
N.C.
Air temperature signal
Coolant temperature signal
N.C.
+ ignition key
18
Engine
TD
Fuel system
10.
POWER S U P P L Y S Y S T E M COMPONENT LOCATION
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Injectors
Heater plugs
Borg Warner modulator solenoid
Bosch injection pump
Debimeter
Glow plug control unit
19
Engine
Marea-Marea Weekend
ft TD
Fuel system
10.
WIRING DIAGRAM
-I
-|
IP
>
CM
-a-o
i
o>
20
Marea-Marea Weekend
^
ft
Engine
Fuel system
10.
Key to wiring diagram
1.
2.
3.
4.
5.
6.
7.
8.
y.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
P4F21FJ01
21
Engine
Marea-Marea Weekend
ftn>
Fuel system
10.
Air conditioner
The injection electronic control unit manages the electromagnetic coupling of the air conditioning system compressor (3) in accordance with a strategy designed to avoid service conditions that w o u l d impair engine performance.
When the compressor is activated, the injection control unit increases idling injection pump output by
means of the fuel quantity actuator in order to adjust the engine to the higher power requirement.
The injection control unit cuts off the supply to the compressor for about 6 seconds under the following
conditions:
- take-off;
- acceleration;
engine not warmechup
This power cut continues even if one of these conditions disappears before the 6 seconds have elapsed.
If the engine coolant overheats, the injection control unit cuts off power to the compressor until the
coolant is restored to a temperature within the specified service range.
Power to the compressor is cut permanently if one of the injection system faults listed below occurs:
- speed signal fault;
- accelerator potentiometer signal fault;
The air conditioner activation system reaches terminal 44 of injection control unit (1) through three
-stage pressure switch (2A). Operating with a slight delay, to ensure idle speed adjusts to the new p o w er requirement, the injection control unit (1) earths terminal 9; at this point, relay (5) closes its contacts
and one positive supplies electromagnetic coupling of compressor ( 3 ) .
80 A
-CCD>*- + 30
2-
+ 15/54
L7
10$
22
- 6
Publication
no.
506.763
Marea-Marea Weekend
ft TD
Engine
Fuel system
C H E C K I N G , R E P L A C I N G AND A D J U S T I N G A C C E L E R A T O R P E D A L P O T E N T I O M E T E R
To check accelerator pedal potentiometer, disconnect wiring connector and use an ohmmeter to check
the following resistances:
- between lead H (grey and lead M (brown) 1kQ; during acceleration, the ohmmeter w i l l indicate an
open circuit because idle contact opens
- between lead H and lead S (pink) 2kQ; during acceleratoin, the ohmmeter w i l l indicate an open circuit
because idle contact opens
- between lead S and lead M 1 kQ
^ ^ e r w e i ^ B B d B^whtte^ a r ^
from 1 -2kQ
- between lead B and lead M, check that resistance varies continuously from 1 -2kQ
If the accelerator pedal position sensor is changed, the pedal assembly must be removed. This operation
is necessary to permit potentiometer adjustment.
The operation is carried out in t w o stages:
Stage 1
23
Engine
Marea-Marea Weekend
fti
Fuel system
Stage 2
Fitting potentiometer
sembly
207
to pedal as-
Fit potentiometer in its seat, position retaining screws (1) and connect linkage.
Rest assembly on a reference
plane as illustrated in the figure
and measure 207 millimetres from
the plane to the rivet connecting
pedal to lever.
With the pedal in this position,
tighten screws (1) retaining accelerator potentiometer.
P4F24FJ01
I N J E C T I O N PUMP OPERATION
- Remove the cap on the pump cover and
tighten tool 1865090000 in place, w i t h
gauge probe in contact with distributor piston crown.
- Turn the engine against its direction of rotation until pump distributor piston reaches
B.D.C. indicated by the guage. Zero the
gauge in this position.
- Turn the engine in its direction of rotation
until engine piston n1 is at T.D.C. Pump
distributor piston must have travelled
through 0.75 mm under these conditions.
- If travel is not 0.75 mm, turn pump case in
its slot until specified value can be read off
gauge. Tighten screws fastening pump to
mount to a torque of 2.5 da Nm.
P4F24FJ02
JPAE24EJ0A
24
i
Clutch
Marea-Marea Weekend
Index
18.
- *
. '
page
C O M P O S I T I O N AND O P E R A T I O N
- Clutch
with
mechanical
release
device
'
- Clutch w i t h hydraulic release
device
1
2
REMOVING-REFITTING
- Removing
- Driven d i s c - pressure plate
- Refitting
5
5
5
CLUTCH OPERATION
-
Thrust bearing
Fork control shaft
Thrust bearing sleeve
Clutch pedal
Adjusting clutch pedal
position
- Removing-refitting clutch
cable
- Removing - refitting hydraulically o p erated clutch components
- Clutch pump
- Operating cylinder
-Bleeding
'
#
6
7
8
8
9
10
11
11
1,5
15
Clutch
Marea-Marea Weekend
The clutch is the dry, single plate type, w i t h the thrust bearing always in contact with the pressure plate
spring.
The driven disc is driven by the pressure exerted by a diaphragm spring.
The clutch release is achieved by means of a cable mechanically controlled by the pedal.
The mechanical clutches fitted are all the "thrust" type (see later section).
Technical data
1370
1581
1747
1910 T D
Spring loading
daN
360
400
500
485
External diameter
mm
190
200
215
215
Internal diameter
mm
130
137
145
145
Pedal travel
mm
15510
P4 F001C01
17010
P4 F001C02
Clutch
Marea-Marea Weekend
P4F002C01
Operation
The clutch is the dry, single plate type, with a hydraulic release device and thrust bearing always in c o n tact w i t h the pressure plate spring. The driven disc is driven by the pressure exerted by a diaphragm
spring.
Marea-Marea Weekend
Clutch
Composition and operation
18.
The clutch release is achieved by means of a pump which, operated by the pedal, transmits the increase
in pressure of the fluid to the operating cylinder piston. The latter acts on the clutch fork, by means of a
push rod, moving the thrust bearing and thereby overcoming the action of the diaphgram spring.
The thrust bearing is constantly in contact with the diaphgram spring, like the operating cylinder push
rod in relation to the fork.
1998 20v
Spring loading
daN
600
External diameter
mm
228.6
Internal diameter
mm
155
Pedal travel
mm
136
Technical data
- Lever arm
Clutch
Marea-Marea Weekend
1 . Reservoir
2. Clutch pump
3. Operating cylinder
P4F004C01
The "drawn" solution allows the use of a diaphragm spring w i t h a greater loading and makes it possible
to produce and transmit a higher torque for the size of the assembly.
In addition, thanks to a more favourable lever arm (A) compared with the conventional "thrust" solution,
this solution allows the release of the clutch w i t h a lesser force.
Technical data
2387 T D
Spring loading
daN
600
External diameter
mm
228.6
Internal diameter
mm
155
Pedal travel
mm
136
Clutch
Marea-Marea Weekend
Removing - refitting
18.
REMOVING
NOTE
In order
necessary
ifferential
tion 21 -
Tool
1370
1875086000
1581
1870447000
1747
1875086000
1998
1875086000
1910TD
2387 TD
1870081000
Clutch
Marea-Marea Weekend
Clutch operation
18.
T H R U S T BEARING
Removing
1. Using tool 1875084000, remove the
thrust bearing from the clutch spring (only
for 2387 TD version)
Clutch
Marea-Marea Weekend
Clutch operation
18.
FORK C O N T R O L S H A F T
Removing - refitting
1 . Remove the circlip for the release lever
and remove the actual lever.
2. Remove the upper bush.
NOTE
Clutch
Marea-Marea Weekend
Clutch operation
18.
THRUST BEARING S L E E V E
NOTE
not
Removing - refitting
1. Undo the bolts shown and remove the
sleeve. (The illustration refers to the sleeve
for the 1580 16v version).
NOTE
CLUTCH PEDAL
Removing peal on version with mechanical
clutch
2. Lift up the clutch pedal ( 1 ) , then disconnect the end (2) of the clutch cable from
the pedal.
3. Undo the bolt fixing the clutch pedal and
remove it from its housing; then remove
the pedal and the supporting spring.
^Jm
fitting
Marea-Marea Weekend
Clutch
Clutch operation
18.
R e m o v i n g pedal on v e r s i o n w i t h hydraulic clutch
Clutch
Marea-Marea Weekend
Clutch operation
18.
R E M O V I N G - R E F I T T I N G CLUTCH CABLE
Air duct
Battery
Relay holder box
Battery drip tray
I.E. control unit for the 1580 16v version
cable
3. Release the clutch cable from the anchorages (1) on the bodyshell as illustrated in
the diagram (only for 1581 - 1747 - 1910
TD versions).
10
Print no.
506.763
Clutch
Marea-Marea Weekend
Clutch operation
18.
2. From inside the engine compartment, remove the flexible buffer from the anchorage opening in the partition and extract
the complete clutch cable.
CLUTCH PUMP
1998 20v version
3. Remove the air intake duct actingon the
bolts s h o w n in the diagram.
Disconnect the battery leads from the
poles and remove the battery from the engine compartment undoing the nut fixing
the retaining bracket.
11
Clutch
Marea-Marea Weekend
Clutch operation
18.
12
Marea-Marea Weekend
Clutch
Clutch operation
18.
1. Release the connecting pipe for the operating cylinder from the retaining bands.
2. Disconnect the pipe for the hydraulic system from the clutch pump.
The hydraulic system must be drained
before disconnecting the pipe.
3. Remove the clip fixing the clutch p u m p to
the pedal.
4. Undo the nuts fixing the clutch p u m p to
the bodyshell.
5. Disconnect the brake fluid supply c o n nector to the clutch pump, then remove
the actual pump.
13
Clutch
Marea-Marea Weekend
Clutch operation
18.
2387 TD version
Re/ease the clutch pump from inside
the vehicle, working as illustrated previouslyfor the 1998 20v version.
1. Working via the engine compartment, disconnect the positive pole and the negative
pole of the battery, undo the nut fixing the
bracket and remove the battery from the
engine compartment.
2. Loosen the bands shown, loosen the fixing bolts s h o w n , disconnect the electrical
connection illustrated, then remove the air
inlet hose complete w i t h f l o w meter.
3. Undo the bolts (1), loosen the bolt ( 2 ) ,
open the bands (3) releasing the wiring,
then remove the battery drip tray.
Release the connecting pipe for the operating cylinder from the point shown, then
remove the clutch pump from the inside of
the vehicle.
14
Print no.
506.763
Clutch
Marea-Marea Weekend
Clutch operation
18.
OPERATING CYLINDER
Carry out the preliminary
operations
in the engine compartment
working
as described in the previous
paragraph.
1998 20v version
1 . Disconnect the flexible pipe from the o p erating cylinder.
2. Undo the nuts shown and remove the
clutch operating cylinder
2387 TD version
3. Disconnect the flexible pipe shown and
release the operating cylinder from the
mounting bracket, then remove it.
B L E E D I N G 1998 20V - 2387 T D
4. Do not, under any circumstances, reuse
the fluid recovered. Top up w i t h new
brake fluid.
15
Marea-Marea Weekend
IS)
page
|Sp| 20v
12v
REMOVING-REFITTING
REMOVING-REFITTING
DRIVE SHAFTS
DRIVE S H A F T S - GEAR S E L E C T O R L I N K A G E
- Removing-refitting
- Dismantling
- Refitting
- Drive transmission components
9
10
12
13
47
58
58
58
TO
- Tool to be made
- Removing - refitting
19
DRIVE S H A F T S
- Removing - refitting and dismantling
drive shafts
lft| 16v
REMOVING-REFITTING
20
DRIVE SHAFTS
- Removing-refitting drive shafts
- Dismantling
- Refitting
28
28
28
ftl
70
- Removing - refitting
- Dismantling at the bench
- Diagram of gear selector linkage
ft
71
75
79
TD
80
DRIVE S H A F T S
- Removing - refitting and dismantling
drive shafts
90
GEAR S E L E C T O R LINKAGE
34
DRIVE SHAFTS
- Removing-refitting drive shafts
- Dismantling
- Refitting
59
60
GEAR S E L E C T O R LINKAGE
REMOVING - REFITTING
29
30
33
16 v
REMOVING-REFITTING
REMOVING - R E F I T T I N G
14
15
18
- Removing - refitting
- Dismantling at the bench
- Diagram of gear selector linkage
42
43
44
I N T E R M E D I A T E S H A F T - GEAR
S E L E C T O R LINKAGE
- Removing-refitting
- Gear selector linkage
46
46
VII-96 - Update
91
95
96
REMOVING - REFITTING
Removing
Place the car on ramps, remove the front
wheels, then proceed as follows:
1. Undo the bolts illustrated, then remove
the plastic engine guard.
2. Disconnect the battery's negative pole, lift
the positive pole's protective cover and
disconnect the pole; undo the nut securing the battery bracket t o the battery cage
and remove the battery from the engine
compartment.
3. Release the cables s h o w n in the figure
from the retaining clips, then undo the
bolt securing the relay box cover.
4. Remove the nuts securing the relay box to
the battery cage, then move the box over
to one side.
Marea-Marea Weekend
Removing - refitting
21-27.
2
tm^&
1. Undo the bolts shown in the figure and remove the battery cage from the engine bay.
2. Disconnect the gear selector lever ( 1 ) ,
disconnect the reversing lights switch ( 2 ) ,
inhibiting cable (3), earth cable (4) and
clutch cable (5).
3. Disconnect the head of the gear engagement cable, remove the stop indicated,
disconnect the speedometer connection
then move the assembly to one side in the
engine compartment.
4. Remove the front bolts securing the starter
motor to the gearbox.
5. Raise the ramps, undo the nut securing
the tie rod balljoint head, then using tool
1847038000, disconnect it from the vertical link. Repeat the operation for the tie
rod ball joint head on the other side.
P4F002B03
Marea-Marea Weekend
ft 12v
1. Undo the attachments illustrated, then remove the engine bay bottom guard.
2. Using tool 1878077000, remove the button securing the dust shield to the body
shell, then undo the bolts and release the
shield from its seating. Repeat the operation on the dust shield on the other side.
3. Remove the front dust shield by undoing
the attachments illustrated.
4. Prepare a tray to collect the gearbox oil,
then undo the plug indicated and drain
the gearbox oil.
5. Remove the shock absorber - vertical link
bolts and turn the vertical link inwards, releasing the brake pipe from the shock absorber.
Marea-Marea
W e e k e n d
ft
Removing - refitting
21-27.
Marea-Marea Weekend
ft 12v
Marea-Marea Weekend
Removing refitting
21-27.
Marea-Marea Weekend
ft 12v
1. Raise the car and remove the central p o w er unit mounting from the body shell and
the gearbox.
2.3 Fit the gearbox support tool (illustrated)
during the removal operation.
4. Undo the remaining bolts securing the
gearbox to the engine.
5. Remove the front power unit m o u n t i n g ,
gearbox side, from the body shell and
gearbox.
Marea-Marea Weekend I p ^
2127.
Refitting
Before refitting the gearbox - differentia/ unit, check that the clutch release
bearing has remained in the bellhousing and is not engaged on the clutch.
Carry out the following
operations:
P4F009B02
REMOVING - R E F I T T I N G
Place the car on ramps, disconnect the battery's negative pole, remove the front wheels,
then proceed as follows:
P4F003B05
Marea-Marea Weekend
ffii*
Drive shafts
21-27.
1. Disconnect the drive shaft from the differential, levering on the engagement point,
then withdraw it from the car.
NOTE
To refit, reverse the procedure for removal, tightening the wheel hub nut
to the specified
torque.
DISMANTLING
2. Place the drive shaft in a vice, remove the
clip securing the dust excluder on the joint
on the gearbox side, then remove the joint.
10
Marea-Marea Weekend
2. Clean the grease off the inside of the c o n stant velocity joint, then using tools
1847017001 and 1860889000, w o r k i n g
simultaneously on the circlip located i n side the joint, remove the joint from the
drive shaft.
11
Marea-Marea Weekend
ft
Drive shafts
21-27.
REFITTING
12
Marea-Marea Weekend
ft**
C O M P O N E N T S OF T H E T R A N S M I S S I O N OF DRIVE
5. Dust excluder
6. Tripod joint
3. Dust excluder
4. Drive shaft
13
P4F014B01
Perspective view of the gear selector linkage with inhibitor of accidental engagement of reverse
1.
2.
3.
4.
5.
6.
7.
14
Marea-Marea Weekend
ft
12M
REMOVING - REFITTING
Disconnect the battery's negative pole, remove the engine compartment bottom guard
and remove the gear selector linkage as f o l lows:
1. Remove the gear lever trim from inside the
car, without removing the gear lever knob.
2. Remove the handbrake protective gaiter,
then disconnect the wiring connection
underneath.
3. Disconnect the gear engagement cable
from the gearbox, removing the head and
releasing the clip.
4. Remove the reverse inhibitor from the
gearbox.
5. Remove the reaction and gear selection
link from the gearbox.
P4F016B04
Copyright
Fiat Auto
15
Marea-Marea Weekend
fti*
1. Raise the car, then disconnect the handbrake cables from the mounting and release them from the bracket.
2. After disconnecting the Lambda probe
wiring connector, remove the bolts securing the first section of the exhaust pipe to
the manifold.
3. Disconnect the rear attachments of the
first section of the exhaust pipe.
4. Release the exhaust pipe from the rubber
mounting indicated.
5. Undo the bolts securing the exhaust pipe
front mounting bracket.
16
Marea-Marea Weekend
ft 12v
17
Marea-Marea
Weekend^ 12v
Dismantling
cable
18
Marea-Marea Weekend
ft**
REMOVING - R E F I T T I N G G E A R C H A N G E
L E V E R ON CAR
disconnect the cable from the lever mounting, removing the retaining ring;
undo the bolt securing the lever to the
mounting, then remove it from the car.
To refit, reverse the procedure for removal.
19
Marea-Marea
W e e k e n d
@i
Removing - refitting
21-27.
REMOVING-REFITTING
Removing
Place the car on ramps, disconnect the battery's negative pole and remove the front
wheels, then proceed as described below:
1. Remove the air intake duct by undoing the
bolts shown in the figure, securing it to
the cross panel.
2. Remove the air intake duct by undoing the
clips shown in the figure, then remove it
from the engine compartment complete
w i t h oil vapour recirculation pipe.
3. Lift the protective cover on the battery's
positive pole and disconnect the cable;
undo the nut securing the battery to the
cage, then remove it from the engine c o m partment.
4. Remove the cover from the relay and fuse
box by undoing the bolt indicated.
20
Marea-Marea
Weekend^ 16v
21-27.
1. Remove the nuts securing the fuse and relay box to the battery cage, then move the
box over to one side.
2. Disconnect the i.e. control unit supply
connector.
3. Remove the nuts securing the i.e. control
unit mounting bracket, then remove the
control unit from the engine compartment.
The nuts indicated also secure the starter
motor supply cables and connection between front cable and fuel injection cable.
4. Remove the screws (1) and slacken the bolt
(2) securing the battery cage to the body
shell. Before removing the cage, disconnect
the cable retaining clip underneath.
5. Disconnect the clutch cable by undoing
the nut (1) and locknut (2) s h o w n in the
figure. Also disconnect the earth cable (3)
from the gearbox.
21
Marea-Marea
Weekend^
16v
Removing - refitting
21-27.
P4F022B01
22
Marea-Marea
Weekend^
m i6v
21-27.
23
Marea-Marea Weekend ft i *
Removing - refitting
21-27.
24
Marea-Marea Weekend
ft 16v
25
Marea-Marea
W e e k e n d
@ 16v
Removing - refitting
21-27.
26
Marea-Marea
Weekend^ 16v
Removing - refitting
21-27.
t
" 1
BSi
27
Marea-Marea
Weekend^ 16v
Drive shafts
21-27.
Refitting
When fitting the engine mounting on the
gearbox side, to prevent stresses being created on the sealing surfaces of the gearbox, resulting in deformation and subsequent oil
leaks, closely adhere to the following sequence for tightening the bolts:
- Tighten the bolts (1) and (2) to a preliminary torque of 0.5 daNm;
- Tighten the bolts (3) and (4) to a preliminary torque of 0.5 daNm, then tighten t o
the specified torque;
- Tighten the bolts (1) and (2) to the speciF(Jr^4eWi!ning refitting operations, reverse
the procedure described for removal. To fit
the clutch release bearing and gearbox bellhousing in the car, refer to the refitting of the
gearbox of the 1370 12v engine.
REMOVING-REFITTING DRIVE SHAFTS
For remove-refit the drive shafts, refer to the
procedure described for the 1370 12v, engine, w i t h the difference that the drive shafts
are attached to the gearbox-differential unit
by means of retaining clips, and the tripod
joint is inserted directly in the differential.
DISMANTLING
Refer to the dismantling of the drive shaft described for the 1370 12v engine, with the difference that on the 1581 engine, in the dust excluders on the gearbox side, fluid-tight ball
bearings have been installed on the drive shafts
to minimize oil leaks. Use the general-purpose
puller to remove these bearings.
The damper weight is supplied
as a spare part incorporated
with the drive shaft, so it must
not be dismantled.
142,7mm
Left drive shaft
HH-M
Il!!
i II
REFITTING
Reverse the procedure described for
removal. To refit the differential case
oil sealing bearing, refer to the f o l lowing description.
ii
ij
107,7mm
Right drive shaft
28
Marea-Marea
W e e k e n d
ft
21-27.
NOTE
29
Marea-Marea
W e e k e n d
ft
REMOVING - REFITTING
Disconnect the battery's negative pole, and
remove the gear selector linkage as follows:
1. Remove the gear lever trim from inside the
car, without removing the gear lever knob.
2. Undo the bolt securing the gear selector
linkage mounting to the body shell.
3. Remove the handbrake protective gaiter,
then disconnect the wiring connection
underneath.
4. Raise the ramps and disconnect the
Lambda probe wiring connection.
5. Disconnect the handbrake cables from
their mounting and disengage them from
the bracket.
30
Marea-Marea
Weekend^ 16v
31
Marea-Marea
Weekend^ 16v
1. Disconnect the gear engagement and selection links and the reaction link, then
undo the nut and disconnect the relay assembly from the control shaft.
2. Undo the bolts securing the gear selector
linkage and handbrake mounting to the
body shell.
3. Withdraw the control shaft from the engine compartment then remove the external gear selector linkage assembly.
32
Marea-Marea
Weekend^ 16v
33
Marea-Marea Weekend
ft 16v
Removing - refitting
21-27.
REMOVING - REFITTING
Removing
Place the car on ramps, disconnect the battery's negative cable and remove the front
wheels.
1. Remove the air intake duct by undoing the
attachments illustrated.
2. Lift the protective cover on the positive
pole, disconnect the positive pole, then
undo the nut securing the battery to the
cage and remove it.
3. Disconnect the wiring connections indicated, undo the bolts securing it to the
bracket, then remove the complete air intake duct.
4. Undo the bolt indicated and remove the
cover from the relay box.
34
P4F035B04
35
Marea-Marea Weekend
ft 16v
Removing - refitting
21-27.
1. Disconnect the electric fan's supply connector. Undo the screws connecting the
fan to the radiator, then remove it from the
car.
2. Undo the top bolts securing the gearbox
to the power unit.
3. Remove the engine reaction link.
4. Remove the windscreen wiper arms by
undoing the nuts.
5. Remove the anti-pollen filter guard.
P4F54AB02
36
Marea-Marea Weekend
ft 16v
P4F037B02
Disconnect the speedometer signal electrical connector and the Lambda probe
connector.
Fit a suitable support eyelet, securing it by
means of t w o service bolts, to permit correct hooking up of the power unit support
crossbeam.
Fit the
engine support
crossbeam
1860851000 and adaptor 1860851001 in
the special support points.
a. Front support: position the tool in the
safety catch seating so that it rests on the
front subframe.
b. Rear support: position the tool at the central reinforcement of the flame-proof
bulkhead.
Attach the crossbeam hook to the bracket
fitted previously.
P4F037B03
37
Marea-Marea Weekend
ft 16v
Removing - refitting
21-27.
1. Using tool 1878077000, remove the button securing the dust shield to the body
shell, then undo the bolts and release the
dust shield from its seating.
2. Disconnect the brake pad wear sensor
connection and withdraw the central dust
shield from the car.
3. Remove the front dust shield by undoing
the attachments illustrated.
4. Undo the nuts securing the tie rod end
balljoint
head,
then
using
tool
1847038000 disconnect it from the vertical link.
5. Undo the bolts securing the vertical link,
then remove the latter.
38
A.
IA
Operations
side
2. Disconnect the gear engagement and selection levers from the gearbox.
3. Raise the car and remove the attachments
illustrated on the first section of the exhaust pipe.
4. Remove the rear attachments and remove
the first section of the exhaust pipe from
the car.
5. Remove the bracket indicated to permit
insertion of the wrench and removal of the
bolt securing the gearbox to the power
unit.
39
Marea-Marea Weekend
ft 16v
Removing - refitting
21-27.
40
Marea-Marea Weekend
Jfii 16v
41
Drive shafts
21-27.
<>
1. Manoeuvre the hydraulic jack as appropriate in order to withdraw the gearbox from
the centring pins, then withdraw it from
the engine compartment by slowly lowering the hydraulic jack.
Refitting
2. When refitting the engine mounting on
the gearbox side, to avoid stresses on the
gearbox sealing surfaces, resulting in deformation and subsequent oil leaks, closely observe the following bolt tightening
sequence:
- Tighten the bolts (1) and (2) to a torque
of 0.5 daNm;
- Tighten the bolts (3) and (4) to a torque
of 0.5 daNm, then tighten to the specified torque;
- Tighten the bolts (1) and (2) to the
specified torque.
To refit, reverse the procedure described for
removal.
REMOVING - R E F I T T I N G D R I V E S H A F T S
Place the car on ramps, disconnect the battery's positive pole and remove the front
wheels, then carry out the following operations:
3. Disconnect the drive shaft by undoing the
attachments illustrated.
4. Withdraw the drive shaft from the wheel
hub and withdraw it from the engine bay.
NOTE
42
Marea-Marea Weekend
ft 16v
DISMANTLING
1. Remove the clip and and remove the dust
excluder on the constant velocity joint on
the wheel side.
It is advisable to fit a new dust
er.
exclud-
Clean the grease off the inside of the c o n stant velocity joint, and using tools
1847017001 and 1 8 6 0 8 8 9 0 0 0 , remove
the constant velocity joint and then w i t h draw the dust excluder, previously moved
aside, from the drive shaft.
43
Marea-Marea Weekend
ftiew
Drive shafts
21-27.
<i>
REFITTING
. Thoroughly wash the constant velocity
joints w i t h diesel or petrol and visually
check that the balls and their seatings are
perfectly specular and w i t h no signs of
seizure or scoring.
After carrying out the following checks, refit the parts in reverse order to dismantling.
If the dust excluder is removed, it is advisable to fit a new one, and it is important to fill both the constant
velocity
joint and the dust excluder
with
TUTELA
MRM2.
320.5 mm
E3B-
NOTE
44
constant ve-
The constant velocity joint on the gearbox side is supplied as a spare part with the drive shaft,
so it must not be dismantled or overhauled.
Marea-Marea Weekend
ft**
P4F045B01
45
REMOVING - REFITTING
Place the car on ramps, remove the front right
wheel, drain the gearbox oil and carry out the
operations listed below, already illustrated
previously:
- Remove the right wheelarch guard
- Disconnect the right tie rod end balljoint
head
- Disconnect the vertical link and drive shaft
from the joint
1. Undo the bolts securing the intermediate
shaft to the mounting.
2. Withdraw the intermediate shaft from its
seating, then remove the dust seal.
3. Withdraw the intermediate shaft from the
engine bay.
4. Check that the intermediate shaft (1) is
not deformed or out of true; check that the
bearing (2) is not scored and does not
show signs of overheating or excessive
wear.
NOTE
GEAR S E L E C T O R LINKAGE
To remove - refit the gear selector linkage, refer to the "gear selector linkage" section concerning the 1581 16v engine.
46
REMOVING-REFITTING
Removing
Place the car on ramps, disconnect the battery's negative pole and the front wheels,
then proceed as described below:
1. Remove the air intake duct by undoing the
bolts shown in the figure.
2. Disconnect the battery's positive cable,
then remove the battery from the engine
compartment, undoing the nut securing
the retaining bracket.
3-4. Disconnect the pipe connecting the air
cleaner to the throttle body by undoing
the clips indicated, and disconnect the
connectors under the pipe; also remove
the resonator.
5. Remove the relay box cover.
47
Marea-Marea Weekend
U20v
Removing - refitting
21-27.
48
49
Removing - refitting
21-27.
1. Fit the power unit support crossbeam
1860851000 and adaptor 1860851001 in
the special support points.
a. Front support: insert the tool in the
bonnet catch seating until it rests on
the front subframe.
b. Rear support: position the tool level
with the central reinforcement of the
flame-proof bulkhead,
c. Secure the crossbeam hook to the eyelet fitted previously near the thermostat.
P4F050B03
50
Marea-Marea
Weekend^ 20v
51
Marea-Marea Weekend
Removing - refitting
21-27.
52
Marea-Marea
Weekend^ 20v
53
Marea-Marea
Weekend^ 20v
Removing - refitting
21-27.
54
Marea-Marea Weekend
ft 20v
A
Copyright Fiat Auto
55
m\20v
Marea-Marea Weekend ijpi
21-27.
REMOVING-REFITTING DRIVE S H A F T S
To remove-refit the drive shafts, refer to the
procedure described for the 1747 16V e n gine.
DISMANTLING
NOTE
1. Remove the protective cap on the c o n stant velocity joint, gearbox side.
2. Remove the t w o retaining clips on the
dust excluder, gearbox side, then remove
it.
3. Clean the grease from the inside of the
constant velocity joint and remove the circlip from its seating.
4. Withdraw the joint from the drive shaft
and then remove the dust excluder.
Whenever
the dust
moved, it is advisable
56
excluder
is reto fit a new one.
Marea-Marea
Weekend^ 20v
<>
REFITTING
Wash the constant velocity joints thoroughly with diesel or petrol, and visually
check that the balls and their seatings are
perfectly specular, with no signs of seizure
or scoring.
E
320
constant ve-
57
Marea-Marea Weekend
ft^ov
1.
2.
3.
4.
5.
7.
6.
8.
To remove and refit the intermediate shaft, refer to the description concerning the 1747 16v engine.
58
Marea-Marea Weekend
ft
21-27.
T O O L S T O BE MADE
Tool to be made for removing the automatic transmission on the 158016v engine, and the gearbox
and power unit on the 2387 TD engine
|
r
- U _ L
10,5
,10,5,
. 10,5,
in
CM
23
87
30
10
150
Holes A / C - To be used for automatic transmission 1580 16v
Smusso
5x45
Holes B/C - To be used for power unit and
gearbox 2387 TD
Tool to be made for removing the gearbox and power unit on the 2387 T D engine
20x45
59
Marea-Marea Weekend
ft TD
Removing - refitting
21-27.
REMOVING - REFITTING
Removing
Place the car on ramps, remove the front
wheels, disconnect the battery's negative
pole, drain the air conditioning system as described in Section 50, and proceed as illustrated below.
1. Disconnect the battery's positive pole, u n do the nut securing the battery to the
cage, then remove it from the engine c o m partment.
2. Undo the t w o clips ( 1 ) , unscrew the bolts
(2), disconnect the connector (3) and
then remove the air intake hose complete
with flowmeter.
3. Undo the bolts (1), slacken the bolt ( 2 ) ,
open the clips (3) releasing the engine
wiring, then remove the battery cage.
4. Undo the clips and remove the hose illustrated.
60
Marea-Marea Weekend
ft TD
1. Disconnect
connector.
the
reversing
light
switch
P4F54AB03
61
Marea-Marea Weekend
ft
Removing - refitting
21-27.
62
Marea-Marea Weekend ft TD
63
Marea-Marea Weekend
fti
Removing - refitting
21-27.
1
P4F0O2B06
P4F039B01
Marea-Marea Weekend ft
TD
1. Undo the screw (1) securing the w i s h bone to the hub, and the bolt (2) securing
the anti-roll bar to the suspension link.
Repeat the same operations
other drive shaft.
on
the
65
Marea-Marea Weekend ft
TD
Removing - refitting
21-27.
66
Marea-Marea Weekend ft
TD
67
Marea-Marea
Weekendft
Removing - refitting
21-27.
68
Marea-Marea WeekendI
TD
Refitting
1. Remove the clutch assembly
with clutch release bearing.
complete
4. Fit the clutch release bearing on the gearbox main shaft sleeve.
69
Removing - refitting
21-27,
<I>
REMOVING - REFITTING DRIVE SHAFTS
304 m m
To remove and refit, dismantle and reassemble the drive shafts, refer to the procedure described for the 1747 16vs engine. When refitting the drive shafts, check that the dimension given in the figure is observed in the
drive shaft - constant velocity joints c o u pling.
When refitting the constant
velocity
Joint, wheel side, it must be connected to a category 2 or white category 3
splined shaft.
70
Marea-Marea Weekend ft
TD
REMOVING - REFITTING
Copyright
Fiat Auto
71
Marea-Marea Weekend
ft TD
72
Marea-Marea Weekend ft TD
73
Marea-Marea Weekend ft TD
74
V I I - 9 6 - Update
75
Marea-Marea Weekend
ft TD
1. Fasten the t w o flexible transmission cables to the mounting on the steering box
using the clips illustrated.
2. Lower the ramps and, working from inside
the car, position the gear change lever (1)
home against the surface (2) of the inhibition device, thus moving it to the position
for selecting 5th gear, then lock it.
3. Secure the gear engagement cable (1) on
its mounting bracket (2) on the gearbox
using the clip ( 3 ) .
4. Secure the gear selection cable (1) on its
mounting bracket (2) on the gearbox usI
/O \
ing the clip
(3).
i n n
76
VII-96 - Update
Publication
no.
506.763/02
Marea-Marea Weekend
ft
TO
77
Marea-Marea Weekend ft TO
78
V l
'-
9 6
" P
d a t e
Marea-Marea Weekend
TD
transmission
VII-96 - Update
79
Marea-Marea Weekend ft
Removing - refitting
2^ 27
R E M O V I N G - R E F I T T I N G G E A R B O X AND
DIFFERENTIAL
Place the car on ramps, remove the front
wheels and disconnect the battery's negative
terminal, then proceed as described below.
1. Remove the engine bottom guard.
2. Prepare a container for collecting the
gearbox oil, then undo the plug indicated
and drain the gearbox oil.
3. Remove the engine top guard.
4. Disconnect the battery's positive pole, u n do the nut securing the battery to its cage,
then remove it from the engine compartment.
80
VII-96 - Update
Marea-Marea Weekend
ft TD
VII 96 - Update
81
Marea-Marea Weekend
tyro
Removing - refitting
2 1 - 2 7 .
1. Remove the pipe illustrated, disconnecting it from the clip on the inlet manifold.
2. Undo the clips (1), undo the bolts ( 2 ) ,
disconnect the connection ( 3 ) , then remove the first section of the air inlet pipe
complete w i t h flowmeter.
3. Undo the clip ( 1 ) , undo the bolt (2) disconnect the wiring connections (3) and
then remove the second section of the air
inlet pipe.
4. Disconnect the t w o wiring connections
on the fan and thermostatic switch.
5. Undo the bolts illustrated securing the fan
to the radiator, then remove the fan.
P4F082B05
82
VII-96 - Update
Marea-Marea Weekend
ft
TD
P4F07EX04
VII-96 - Update
83
Marea-Marea Weekend
ft TD
Removing - refitting
21-27.
1. Disconnect the engine oil vapour recirculation pipe from the engine block as illustrated.
2. Undo the t w o top bolts securing the
starter motor to the gearbox.
3. Disconnect the supply cables ( 1 ) , undo
the bolt ( 2 ) , then remove the starter motor
from the engine compartment.
4. Using tool 1878077000 remove the button, undo the bolts and remove the dust
shield. This operation must be repeated for
the other shield on the other side of the
car.
5. Remove the wheelarch guard illustrated.
84
VII-96 - Update
Marea-Marea Weekend
ft TD
VII-96 - Update
85
Marea-Marea Weekend
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TD
Removing - refitting
21-27.
2.
3.
4.
5.
86
VII-96 - Update
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ft
TD
VII-96 - Update
87
Marea-Marea Weekend
ft TD
Removing - refitting
21-27.
88
VII-96 Update
Marea-Marea Weekend
ft
P4FD89B03
Marea-Marea Weekend ft TO
Removing - refitting
21-27.
1. Manoeuvre the hydraulic jack so as to release the gearbox from the attachment
pins and surrounding parts. Gradually
lower the jack and w i t h d r a w the gearbox differential unit.
Refitting
2. When refitting the engine mounting, gearbox side, to prevent stresses and deformation resulting in oil leaks on the sealing
surfacts, tighten the bolts in the following
sequence:
- Tighten the bolts (1) and (2) to a preliminary torque of 0.5 daNm;
- Tighten the bolts (3) and (4) to a preliminary torque of 0.5 daNm, then tighten to
the specified torque;
- Tighten the bolts (1) and (2) to the specified torque.
For the remaining operations, reverse the
procedure described for removal. To fit the
clutch release bearing, refer t o the procedure
described for the 1370 12v engine.
REMOVING - R E F I T T I N G AND D I S M A N T L I N G D R I V E S H A F T S
To remove, refit and dismantle the drive shafts, refer to the procedure described for the 1747 16v engine.
90
VII-96 - Update
Marea-Marea Weekend
ft
TO
REMOVING - REFITTING
Place the car on ramps, disconnect the battery's negative pole, remove the front wheels,
then proceed as described below.
VII-96 - Update
91
2^
Marea-Marea Weekend
ft
TO
7m
1. Disconnect the battery's positive pole, u n do the nut securing the battery to its cage,
then remove it from the engine compartment.
2. Undo the bolts illustrated and remove the
air duct illustrated.
3. Raise the ramps and remove the engine
compartment bottom guard.
4. Undo the bolt illustrated on the relay box
cover.
5. Undo the nuts illustrated and move the relay box over to one side in the engine
compartment.
92
VII- 96 - Update
Marea-Marea Weekend
ft
TD
VII-96 - Update
93
Marea-Marea Weekend ft
94
VII-96 - Update
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ft TD
VII-96 - Update
95
Marea-Marea Weekend ft
P4F096B01
transmission
3. Flexible
bracket
transmission
cable
mounting
96
VII 96 Update
Marea-Marea Weekend
16v
Automatic transmission
Contents
21-27.
page
page
C O M P O N E N T S AND OPERATION
- Description
- Selector lever
- Torque converter
- Lock-up clutch- Oil pump
- Epicyclic gear sets
- Control components
- Hydraulic control system
- Transmission of motion
- Safety control unit
- Electronic control system
.
- Control module
*
- Operating strategies
- Gear change solenoids
- Lock-up clutch control solenoid
- Pressure control solenoid
- Selector lever position sensor
- Gearbox oil temperature sensor
- Main shaft rpm sensor - Vehicle speed
sensor
- Kick-down switch
- Stop lights switch
- Throttle valve position signal
- Engine coolant temperature signal
- Wiring diagram
- Diagnosis
DRIVE S H A F T S
1
3
3
4
5
5
6
8
9
13
15
16
19
26
27
27
28
29
29
30
30
30
30
31
32
S E R V I C I N G AND A D J U S T M E N T S
-
39
39
40
46
48
49
49
50
REMOVING-REFITTING
- Removing-refitting gearbox
- Precautions
51
60
-Removing-refitting
- Dismantling-reassembly
- Reassembly
,
- Transmission components
63
64
65
66
VALVE A S S E M B L Y
- Removing-refitting valve assembly
- Kick-down switch
67
69
Marea-Marea Weekend
fti<
Automatic transmission
Components and operation
21-27.
DESCRIPTION
Introduction
The Fiat Marea and Marea Weekend 1581 16v Torque uses an AISIN 60-40 LE automatic gearbox and
differenetial unit, 4-speed version AW 596/Y024, specially designed for front-wheel drive vehicles w i t h
transverse-mounted engine, fitted with an electronic control system connected to the engine management control unit.
P4F01AB01
1. Gearbox-differential unit
2. Selector lever
3. Control module
The electronic control logic for the automatic transmission is in an "intelligent" control unit (or control
module), located under the dashboard by the glove compartment.
The control module is connected to the various sensors/actuators located on the gearbox, engine and
dashboard, the control unit of the fuel injection/ignition for exchanging information relating to the engine and the instrument panel for displaying the operating conditions.
The mechanical unit of the automatic transmission comprises:
- an oleodynamic torque converter, with a lock-up clutch which locks the converter in the higher ratios;
- t w o epicyclic gear sets, located on the main shaft;
- a band brake B 1 , a multiple disc brake B2 and four multiple disc clutches, operated hydraulically; there
are also t w o free wheels, w h i c h lock the various gearing components to obtain the four forward gears
and reverse gear;
- a parking lock, consisting of a gear w i t h ratchet gear which locks the gearbox when the gear lever is in
the P (Park) position.
The control module interacts in the hydraulic operation of the gearbox, issuing the appropriate operating
commands to the clutches and brakes via four solenoids, contained in a valve unit located at the front of
the automatic transmission.
Automatic transmission
Marea-Marea Weekend
ftm
1.
2.
3.
B1.
B2.
CO.
C1.
C2.
C3.
D.
E.
FO.
Torque converter
Lock-up clutch
Differential
Band brake
Multiple disc brake
Multiple disc clutch
Multiple disc clutch
Multiple disc clutch
Multiple disc clutch
Clutch carrier drum
Drive input shaft
Free wheel
F1.
11.
12.
K1.
K2.
51.
52.
ST1.
ST2.
ST3.
T1.
U.
Free wheel
Main shaft drive output gear
Layshaft gear
Epicyclic gear set P1 crownwheel
Epicyclic gear set P2 crownwheel
Epicyclic gear set P1 sun gear
Epicyclic gear set P2 sun gear
Epicyclic gear set P1 planet gear
Epicyclic gear set P2 inner planet gear
Epicyclic gear set P2 outer planet gear
P1 and P2 epicyclic gear train carrier
Relay shaft
P4F<>2ABOI
Publication n 506.763
Automatic transmission
Components and operation
21-27.
S E L E C T O R LEVER
To select a gear, use the selector lever located on the central console, which comprises a safety button
(2) to protect against accidental gear engagements. It is connected to the automatic transmission via a
flexible cable, and it acts on the valve unit and on an electrical device through which a coded electrical
signal indicating the lever's position (P, R, N, D, 3, 2, 1) is transmitted to the control module.
1. Selector lever
2. Safety button (to prevent accidental gear
engagement)
3. Lever position display
4. NORMAL/SPORT button (this is for
switching over from N O R M A L mode to
SPORT mode and vice versa)
5. ICE button (for driving on slippery roads)
P4F03AB01
R Reverse
N Neutral
D Drive
3 3rd gear
Automatic operation of the gearbox on the first 3 ratios (the change to 4th gear is inhibited)
2 2nd gear
Automatic operation of the gearbox on the first 2 ratios (the change to 3rd and 4th
gears is inhibited)
1 1st gear
TORQUE CONVERTER
The purpose of the torque converter is to hydraulically transmit power from the engine to the gearbox,
and to increase the torque when the vehicle is accelerating. The rotary motion is transmitted to the
epicyclic gearing through t w o shafts:
- the layshaft which engages on the lock-up clutch.
- the gearbox main shaft which engages in the hub of the converter turbine;
The converter comprises (see figure on next page) a pump P connected to the crankshaft, a turbine T
connected to the gearbox main shaft, and a stator S connected to the gearbox outer casing. The c o n verter is filled completely w i t h oil w h i c h , because of the kinetic energy impressed upon it by the pump,
permits the transmission of the driving torque.
Automatic transmission
Marea-Marea Weekend
@u v
6
P Pump
S Stator
T. Turbine
P4F04AB01
NOTE
The torque converter does not sustain any kind of wear as there is no mechanical
between the driven part and the driving part.
connection
The impeller P is connected to the crankshaft and, rotating in a clockwise direction, acts as a pump,
transmitting its energy to the oil.
The centrifugal force pushes the oil towards the periphery of the impeller, where it flows at high speed
towards the turbine T. Here the oil's kinetic energy impresses a clockwise rotary movement to the turbine.
The oil then passes through the stator S, where it is diverted in accordance w i t h an angle which permits
it return to the pump with high efficiency. The stator is connected to the gearbox casing by means of a
free wheel engagement system, w h i c h prevents its rotation in an anti-clockwise direction and provides a
reaction torque, proportional to the oil flow diversion, w h i c h is added to that of the turbine.
The ratio between the torque acting on the turbine and that provided by the pump is k n o w n as torque
multiplication ratio and is proportional to the difference in speed of rotation between pump and turbine.
With the wheels stopped, the torque is around double that delivered by the engine.
As the turbine speed increases, the torque multiplication decreases continuously and tends to reach the
ratio of 1:1, corresponding to a turbine speed of 85-90% of the pump speed. When the turbine and
pump speeds are almost the same, the stator is enveloped by an oil f l o w directed at an angle w h i c h
makes it change its direction of rotation and, as it is not blocked by the free wheel, it rotates in a clockwise direction without impediment and the torque converter behaves like a simple hydraulic joint.
LOCK-UP CLUTCH
In first, second and reverse gears, the driving torque is transmitted by the torque converter.
In third and fourth gears, the torque is transmitted first hydraulically by the converter, and secondly mechanically via the lock-up clutch. The lock.-up clutch, by connecting the pump to the converter's turbine when the speed increases, eliminates the internal slipping of the converter and provides a mechanical coupling between the engine and the gearbox main shaft.
The locking of the torque converter allows the performance of the transmission to be improved at high
speeds, leading to a reduction in fuel consumption on long motorway journeys.
The lock-up clutch is switched on by the control module via the lock-up solenoid SL, at the higher gears
(3rd and 4th gears), when it is no longer necessary to multiply the driving torque supplied by the torque
converter.
The solenoid SL opens, discharging the oil pressure from the chamber A, while the pressure in the c o n verter continues to act on the face B: the clutch, fitted on the turbine hub, is then pushed against the
casing connected to the converter's pump, thus locking the converter.
Publication n 506.763
Marea-Marea Weekend I
16v
Automatic transmission
Components and operation
21-27.
1.
2.
3.
4.
5.
6.
7.
Flywheel attachments
Casing connected to pump
Lock-up clutch
Turbine
Pump
Stator
Drive input shaft
O I L PUMP
The oil pump used for the AISIN automatic
transmission is of the inner gear type.
It is located between the torque converter and
gearbox casing, and is driven directly by the
converter pump impeller.
The functions of the oil pump are as f o l l o w s :
- to provide the necessary pressure to the
hydraulic control system and the gearbox
control components (clutches and brakes);
- to send an oil f l o w into the torque converter case in order to cool it and to be able t o
operate the lock-up clutch;
- to lubricate the moving components of the
gearbox;
- to circulate oil in the cooling system.
Structure of the oil pump
1. Inlet side
2. Delivery side
E P I C Y C L I C GEAR S E T S
The AISIN automatic transmission uses t w o
epicyclic gear sets for obtaining the five transmission ratios (4 forward gears + reverse gear).
The rear gear set P1 is a simple epicyclic
gear set comprising a sun gear S 1 , four
planet gears ST1 and a crownwheel K 1 .
The front gear set P2 consists of an
epicyclic gear set comprising a sun gear
S2, four inner planet gears ST2, four outer
planet gears ST3 and a crownwheel K2.
The shafts of the planet gears S T 1 , ST2
and ST3 are attached to the gear train
carrier T 1 .
Epicyclic gear sets P1 and P2
P1
K1.
K2.
51.
52.
ST1.
ST2.
ST3.
T1.
Crownwheel of P1
Crownwheel of P2
Sun gear of P1
Sun gear of P2
Planet gears di P1
Inner planet gears of P2
Outer planet gears of P2
Gear train carrier
Automatic transmission
Marea-Marea Weekend
ftiev
When engaged, the clutch C1 couples the gearbox input shaft E to the clutch carrier drum D.
When engaged, the clutch C2 couples the gearbox input shaft E with the shaft E on w h i c h there are the
t w o sun gears S1 and S2 of the gear sets P1 and P2.
When engaged, the clutch C3 couples the clutch carrier drum D w i t h the crownwheel K1 of the
epicyclic gear set P1; in this way the crownwheel K1 receives motion from the gearbox input shaft E
through C1-C3.
When engaged, the clutch CO couples the clutch carrier drum D w i t h the crownwheel K2 of the
epicyclic gear set P2; in this way the crownwheel K2 receives the motion from the gearbox input shaft E
through C1-C0.
6
Marea-Marea Weekend
ijpiic*
Automatic transmission
Components and operation
21-27.
Brakes
There are t w o brakes in the AISIN automatic transmission, one of the multiple disc type ( B 2 ) , and one
band brake ( B 1 ) .
They are activated by the valve assembly located in the gearbox hydraulic control unit.
P4F07AB01
The band brake B1 blocks the rotation of the sun gears S1 and S2 (connected to each other), w h i c h
form part of the gear sets P1 and P2.
The multiple disc brake B2 blocks the rotation of the crownwheel K2 of the gear set P2.
Automatic transmission
Marea-Marea Weekend
ftiev
P4F08AB01
P4F08AB02
The roller clutch FO connects the clutch carrier drum D and crownwheel K1 of the gear set P1 when the
clutch C1 is active, and the motion comes from the gearbox input shaft.
The roller clutch F1 prevents the anti-clockwise rotation of the crownwheel K2 of the gear set P2.
P4F03AB03
Marea-Marea Weekend i g l ^
Automatic transmission
Components and operation
21-27.
T R A N S M I S S I O N OF MOTION
The diagram below illustrates in a simplified manner the composition of the gear sets and control c o m ponents (clutches, brakes and free wheels) of the gearbox.
The same diagram will be used on the following pages to illustrate the intervention of the various control
components during the different stages of operation.
B 1 . Band brake
B2. Multiple disc brake
CO. Multiple disc clutch
C1. Multiple disc clutch
C2. Multiple disc clutch
C3. Multiple disc clutch
D. Clutch carrier drum
E. Drive input shaft
FO. Free wheel
F1. Free wheel
11. Main shaft drive output gear
12. Layshaft gear
K1. Crownwheel - epicyclic gear set P1
K2. Crownwheel - epicyclic gear set P2
5 1 . Sun gear - epicyclic gear set P1
52. Sun gear - epicyclic gear set P2
ST1. Planet gear for epicyclic gear
set P1
ST2. Inner planet gear for epicyclic
gear set P2
ST3. Outer planet gear for epicyclic
gear set P2
T 1 . P1 and P2 epicyclic gear train
carrier
U. Relay shaft
The table below gives the conditions of activation of the components depending on the gear engaged
and the position of the selector lever.
Selector
lever
position
P
R
N
D
2
1
NOTE
Gear engaged
Park
Reverse (*)
Neutral (**)
Neutral
1st
2nd
3rd
4th
1st
2nd
3rd
1st
2nd
3rd
(1st)*
(2nd)*
Control
solenoids
S2
S1
SL
C1
O
O
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
0=Solenoidactivated
(*) Speed < 7 k m / h
( ) Intermediate selection in manual scale.
Clutches
O
o
o
o
o
o
o
o
o
o
o
o
C2
C3
o
o
o
o
o
0
Brakes
CO
B1
B2
o
o
o
o
o
o
o
o
o
o
Free
wheels
F1
FO
o
o
o
o
O
o
O
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
Automatic transmission
Marea-Marea Weekend
fti**
The parking lock is off, so the planet gears ST1 - S T 2 - S T 3 are free to rotate around the sun
gears S I and S 2 , allowing the vehicle to move if it is on a slope.
Park (selector lever on position P)
The control components are as described for position N, with the
sole difference that the parking
lock (ratchet P) is engaged, preventing the vehicle from moving.
10
Publication
no.
506.763
Marea-Marea Weekend i f i ^
Automatic transmission
Components and operation
21-27.
P4F11AB01
P4F11AB02
11
Automatic transmission
Marea-Marea Weekend I m ^
12
Marea-Marea Weekend I E S ^
Automatic transmission
Components and operation
21-27.
P4F13AB01
S A F E T Y CONTROL UNIT
The safety functions of the AISIN automatic transmission are managed by a special electronic control
unit, and may be divided into t w o categories:
1. warning functions, w h i c h cause a buzzer to sound when:
- the selector lever is shifted to position R;
- a front door is opened when the selector lever is at a position other than P;
- the engine is switched off w i t h the selector lever in a position other than P;
2. functions which oblige the driver t o carry out particular actions to allow:
- the selector lever to be moved from position P with the engine running only w i t h the brake pedal
pressed;
- the ignition key to be withdrawn only with the selector lever in position P.
13
Automatic transmission
Marea-Marea Weekend @ u
6v
14
26.
27.
28.
29.
30.
31.
32.
33.
Marea-Marea Weekend
ft 16v
Automatic transmission
Components and operation
21-27.
E L E C T R O N I C CONTROL S Y S T E M
The electronic control system of the AISIN automatic transmission comprises a control module, some
switches and sensors which inform the control module of the different operating conditions and four actuators w h i c h receive commands from the control module and interact w i t h the hydraulic control system
to obtain the engagement of the different gears.
The control module also sends signals to the instrument panel and exchanges information w i t h the fuel
injection/ignition control unit and diagnostic socket.
Location on the car of the control system components of the AISIN AW 596/Y024 automatic transmission
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
15
Automatic transmission
The control module receives information concerning the operation of the automatic transmission from
the various switches and sensors located on the gearbox, engine and dashboard, and issues the appropriate commands to four solenoids contained in a valve assembly located at the front of the automatic
transmission, and to the fuel injection/ignition electronic control unit for reducing the driving torque
under particular operating conditions.
P4F16AB01
16
Publication no.
506.763
Marea-Marea Weekend
fti<
Automatic transmission
Components and operation
21-27.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Control module
NORMAL/SPORT mode switch
ICE mode switch
Kick-down switch
Stop lights switch
Main shaft rpm sensor
Vehicle speed sensor
Gearbox oil temperature sensor
Selector lever position sensor
10.
11.
12.
13.
14.
15.
16.
17
Automatic transmission
Marea-Marea Weekend
ft 16v
mmun
R8 R7 R6 R5 R4 R3 R2 R1
L15 L14
R16 R15 R14 R13 R12 R11 R10 R9
=u=
Pin
Connection
Pin
R1
R2
R3
R4
R5
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
18
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
Connection
Pressure control STH solenoid (-)
Earth on car
Selector lever position sensor (A)
NC
Gearbox oil temperature sensor (-)
NC
NC
Earth on vehicle
STOP lights switch
Display on instrument panel
- Selector lever position
- Driving mode
- Fault/high gearbox oil temperature
sensor
Pressure control solenoid STH ( + )
Battery positive
Solenoid S1
NC
NC
Selector lever position sensor (B)
NC
Gearbox oil temperature sensor ( + )
Gearbox oil cooling fan relay
NC
Diagnostic socket earth (line G)
Diagnostic socket (line L)
Diagnostic socket (line K)
Lock-up clutch solenoid SL
Key-dependent positive ( M A R )
Solenoid S2
Marea-Marea Weekend
ft^
Automatic transmission
Components and operation
21-27.
OPERATING STRATEGIES
Actuation of gear changes
The change from one gear to the higher or lower gear depends on the accelerator pedal position, the vehicle speed, the engine's characteristic parameters and the driving mode selected by the driver.
The control module sends an ON/OFF signal to the solenoids S1 and S2.
They consent or prevent the oil from reaching the brakes and clutches necessary for obtaining the different transmission ratios, changing their condition from ON to OFF and vice versa as s h o w n in the table
below.
Gear
Solenoid S1
1st
2nd
3rd
4th
ON
ON
OFF
OFF
Solenoid S2
OFF
ON
ON
OFF
19
Automatic transmission
Marea-Marea Weekend
ft 16v
P R N D 321
ICE
SPORT
NORMAL
The behaviour of the AISIN automatic transmission, in accordance with the driving mode ( N O R M A L ,
SPORT or ICE) used, is described below.
The characteristic curves of change between the four ratios and the locking of the lock-up clutch are
shown, both during progression and during reduction of the ratio (scaling), expressed as a function of
the percentage of aperture of the throttle valve and the vehicle speed.
Operation with NORMAL strategy
The N O R M A L strategy is selected by the control module whenever the engine is started up.
With this operating stragegy, very gentle operation is ensured, aimed at optimizing driving comfort and
economy of operation.
L
o%
Apertura farfalla
Km/h
10
20
30
40
50
60
70
80
90
230
Gear
change
program
P4F20AB03
20
Publication
no.
506.763
Marea-Marea Weekend
ft 16v
Automatic transmission
Components and operation
21-27.
Oi
3 L > ON
4L . O F F :
I 4L
>ON
90%
80%
70%
60%
50%
40%
30%
20%
10%
Km/h
0%
10
20
30
40
50
60
70
80
90
100
Lock-up
program
110 120 130 140 150 160 170 180 190 200 210 220 230
Operation in S P O R T mode
The control module switches to SPORT
mode when the NORMAL/SPORT pushbutton located on the left of the selector lever is
pressed.
This mode of use of the gearbox is designed
to make full use of the power so as to obtain
maximum performance from the vehicle; for
the same aperture of the throttle valve, the
changes to the higher ratios are automatically
shifted to a higher engine speed.
1-2
; I2
3-2
'
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
Km/h
0%
10
20
30
40
50 60 70
80
KD
Apertura farfalla
! i i i i i
3L - O F F :
3L - ON |
100%
90%
80%
i ! ! :
I
i
i
{
70%
60%
50%
:
i
:
i
:
i
:
:
40%
30%
20%
10%
! ;
: !
0%
10
20
30
40
50 60 70
80
Km/h
Lock-up program
21
Automatic transmission
Marea-Marea Weekend t ^
KD 4 Apertura farfalla
100%
3 4*2 j
; 4 3
2 -3
3i4
90%
80%
70%
60%
50%
40%
30%
20%
10%
Gear change
program
Km/h
0%
10
20
30
40
50
60
70
80
90
100
110 120 130 140 150 160 170 180 190 200 210 220
230
The table below illustrates the ratios which the gearbox uses automatically while the vehicle is driving,
in relation to the driving mode used and the selector lever position, and shows the transmission ratio
used on departure.
Selected
driving
mode
NORMAL
SPORT
ICE
22
Selector
lever
position
Ratio
selected on
departure
1st
1st
1st
1st
1st
1st
1st
2nd
Automatic management
1
Automatic transmission
Components and operation
21-27.
This makes the line pressure fall, so as to reduce the jolt caused by the engagement of reverse gear.
23
Automatic transmission
Marea-Marea Weekend
ftiev
Self-test
The electronic control system constantly monitors the sensors, control solenoids and all the other electronic components, in order to detect faults and malfunctions immediately; these errors are memorized in
the control module and can be read using the FIAT/LANCIA Tester.
Error detection conditions
The control module can detector errors in the various components only under particular conditions.
With the ignition set to ON or START, and in all other conditions, the following errors can be detected:
-
24
Marea-Marea Weekend
ftiev
Automatic transmission
Components and operation
21-27.
Memorization of errors
In the case of significant faults, the red warning light (1) on the instrument panel comes on.
If the gearbox oil temperature is over 150C, the red warning light (1) remains permanently o n .
owing errors:
- error in transmission ratio;
- error in checking transmission of driving
torque reduction signal;
- error in battery voltage;
- error in gearbox mechanism;
25
Automatic transmission
Marea-Marea Weekend
ft^
Reverse
4th
4th
3rd
1st
riL
8
Solenoid S1
Solenoid S 2
1st
ON
OFF
2nd
ON
ON
3rd
OFF
ON
4th
OFF
OFF
16 15 14 13 12 11 10
Gear
L26
L13
1 1
1 1
1 1
G e a r b o x sensors/actuators
( v i e w of contact side)
l
1
J
>
connector
'
26
Marea-Marea Weekend
ft 16v
Automatic transmission
Components and operation
21-27.
LOCK-UP CLUTCH CONTROL SOLENOID
The lock-up clutch control solenoid SL is located at the front of the gearbox and manages the locking of the torque converter.
The solenoid, controlled by a duty cycle signal sent by the control module, intercepts the
passage of oil, discharging the pressure
which acts on the rear face of the clutch.
The clutch, fitted on the turbine hub, is
pushed by the pressure in the converter acting on its front face, against the casing joined
to the converter pump, so locking it.
1
n
K M
8
1
n
8
2>
Ci
16 15 14 13 12 11 1 0
1=1
L24
P4F27AB03
Resistance: 13 2 ohm at 20 C
Gearbox
sensor/actuator
connector (view of contact
side)
P R E S S U R E CONTROL S O L E N O I D
SHT
The line pressure control solenoid STH is located at the front of the gearbox and it manages the changes in hydraulic pressures.
The solenoid, also controlled by a duty cycle
signal sent by the control module, regulates
the hydraulic pressure acting on the brakes
and clutches in order to reduce the gear engagement times when cold and the jolting on
engagement of reverse.
The solenoid also regulates the pressure driving the hydraulic valves in accordance w i t h
the throttle valve aperture and the vehicle
speed.
27
Automatic transmission
Marea-Marea Weekend
ftiev
P4F28AB03
S E L E C T O R L E V E R POSITION SENSOR
The sensor, located at the top of the gearbox casing, detects the position of the selector lever (to w h i c h
it is connected mechanically) and informs the control module via an appropriate electrical signal.
The module lights up the warning light on the instrument panel.
The sensor also switches on the
reversing lights when reverse is
engaged, and enables the starter
motor only when the selector
lever is at position N or P.
The combination output signals present on the various terminals of the sensor is shown
in the following table.
Connectors
*dal
teleruttore
motore a w .
FTI
5
28
REV.
Start.
Terminals
10
, 8
Signals
ST
IG
PA
P
R
N
D
3
2
1
Publication no.
506.763
Marea-Marea Weekend
ft 16v
Automatic transmission
Components and operation
21-27.
G E A R B O X OIL T E M P E R A T U R E SENSOR
The sensor is located in the gearbox casing and detects the
transmission oil temperature through the variation in NTC resistance on the sensitive part of the sensor.
The information provided by the control module is used to i n crease the line pressure when cold in order to reduce the gear
change times.
The resistance of the gearbox oil temperature sensor can be
measured by disconnecting the connector and connecting an
ohmmeter as shown in the figure.
7000
6000
5000 4000 3000 2000 1000
Wiring diagram
-1
50
100
150
P4F29AB04
29
Automatic transmission
Marea-Marea Weekend
i f i n s v
KICK-DOWN SWITCH
The kick-down switch is installed on the accelerator pedal and is operated when the accelerator pedal is pressed beyond a certain
travel.
When the switch is operated, the control
module (terminal R6) scales the transmission
ratio in accordance with the vehicle speed,
adhering to the selected gear change program.
With the switch at the ON position, the control unit effects the gear changes at higher
engine speeds.
S T O P LIGHTS S W I T C H
The switch, mounted on the pedal assembly,
is closed w h e n the brakS pedal is pressed,
causing the STOP lights to come on and
supplying the L9 terminal of the control
module to exclude the torque converter
lock-up function when the brake pedal is
pressed.
T H R O T T L E V A L V E POSITION S I G N A L
The throttle valve position signal is acquired by the fuel injection/ignition control unit, w h i c h detects it
via the potentiometer installed on the throttle body.
The automatic transmission control unit uses this signal ( P W M type with variable duty cycle), receiving
it directly from the fuel injection/ignition control unit.
ENGINE COOLANT T E M P E R A T U R E SIGNAL
The engine coolant temperature signal is received by the fuel injection-ignition control unit, which detects it via an NTC sensor located on the thermostat body.
The automatic transmission control unit uses an ON/OFF type signal generated by the fuel injection/ignition control unit; the signal is changed over at a coolant temperature of 75C.
30
Marea-Marea Weekend @ i i
6v
Automatic transmission
Components and operation
21-27
31
Automatic transmission
Marea-Marea Weekend
ft^
The gearbox oil level must be checked with the engine and gearbox at normal operating temperatures (gearbox oil: 70 - 80C), so the vehicle must be driven for a suitable period of time before
the check.
To check the level of the gearbox oil, proceed as
follows:
- park the vehicle on flat ground and apply the
handbrake;
- with the engine idling, gently move the selector lever from position P to position 1, then return it to P;
- withdraw the dipstick (1) and clean it;
- insert the dipstick fully into its seating;
- withdraw the dipstick again and check that the
oil level lines up w i t h the notch on the side of
the stick marked HOT.
If the oil level is low, identify and eliminate the
leaks, then top up the level.
Also check the condition of the oil; if it is black or
smells burnt, it should be changed.
Checking selector lever position
When the selector lever is moved from position N
to the other positions, check that it moves freely
without stiffness into any position, and that the
position indicator on the instrument panel indicates the correct position.
Checking selector lever position
If the engine does not start when the selector
lever is at position N or P, or vice versa it starts
when the lever is in a position other than N or P,
the selector lever control cable must be adjusted
as described on page 45, by adjusting the head
(1) and locking it with the locknut (2). Finally
check the correct position of the selector lever
position sensor as described on page 47.
32
Marea-Marea Weekend
ftiev
Automatic transmission
Components and operation
21-27.
seconds.
33
Automatic transmission
Marea-Marea Weekend
ftiev
seconds.
P4F34AB01
Possible causes
Stall speed
34
*
*
*
*
Marea-Marea Weekend
ft^
Automatic transmission
Components and operation
21-27.
To obtain a reliable result, carry out several measurements and take the average value. Allow
minute to pass between two consecutive
measurements.
one
P4F35AB01
Engagement time
*
*
*
*
35
Automatic transmission
1860870000
P4A36AB02
P4F36AB04
36
Marea-Marea Weekend
ft 16v
Automatic transmission
Components and operation
21-27.
in
duration.
Speed
Idling
Stall
Line pressure
Possible causes
37
Automatic transmission
Marea-Marea Weekend i f i ^
temperature.
Gear engaged
Park
Reverse
Neutral
4th
4th
3rd
1st
NOTE
38
With the selector lever at position N, the vehicle must not move spontaneously
on a flat road.
With the selector lever at position P, the locking pawl must stop the vehicle moving even on a
downhill road.
Publication
no.
506.763
Marea-Marea Weekend
ft
16v
Automatic transmission
Servicing and adjustments
21-27.
CHANGING GEARBOX O I L
Draining
Drain the gearbox oil after a road journey so
that the oil reaches operating temperature.
Then carry out the following operations:
- undo the plug (1) and allow the oil to
drain;
- retighten the plug (1) after replacing the
seal, and tighten it to a torque of between
2.35-5.49 daNm.
Filling
Withdraw the dipstickand, using a clean f u n nel so as not to contaminate the oil, pour in
the required quantity of gearbox oil. To facilitate the operation, remove the air cleaner. After filling, check that there are no leaks from
the drain plug.
Periodical oil change: 3 litres- 2.7 kg
Recommended gearbox oil: T U T E L A G I / 2
CHECKING OIL LEVEL
NOTE
<i>
39
Automatic transmission
Marea-Marea Weekend i g i ^
WARNINGS
- If the oil level is low, there may be a reduction in the line pressure owing to the fact that the oil
pump draws in air, resulting in malfunctioning of the transmission.
- If the oil level is higher than normal, there may be oil leaks from the vent pipe.
- Contamination of the oil with water or the use of an oil with different characteristics from the
recommended oil causes higher consumption and malfunction of the transmission.
GEAR CHANGE C A B L E
Removing
Disconnect the battery's negative cable, then
proceed as described below:
1. Remove the air intake duct by undoing the
bolts shown in the figure, which secure it
to the front cross panel.
2. Lift the cover protecting the battery positive pole and disconnect the cable; undo
the nut securing the battery to the cage,
then remove the battery from the engine
compartment.
3. Remove the cover from the relay and fuse
box by undoing the screw indicated.
40
Marea-Marea Weekend
ft 16v
Automatic transmission
Servicing and adjustments
21-27.
P4F41AB02
41
Automatic transmission
Marea-Marea Weekend
ft 16v
42
Automatic transmission
Servicing and adjustments
21-27.
43
Automatic transmission
Marea-Marea Weekend
ft 16v
44
Marea-Marea Weekend 1
16v
Automatic transmission
Servicing and adjustments
21-27.
Refitting
Refit the gear change cable and selector lever
by reversing the procedure for removal, bearing in mind the following:
- check that the gear change lever is positioned at P (lever fully f o r w a r d ) ;
- check that the selector lever is also set to
position P;
<>
Complete the assembly by securing the battery cage, i.e. control unit, battery and air intake duct.
Finally carry out the following checks:
- the engine must only start w i t h the selector
lever in position P or N;
- each position of the selector lever must be
accompanied by the relevant indications on
the indicator panel and instrument panel
display.
45
Automatic transmission
Marea-Marea Weekend
ft 16v
Removing
Remove the air intake duct, battery, relay and
fuse box (move it to one side) the i.e. control
unit and battery cage, as described for the removal of the gear change cable, position the
selector lever at P, then carry out the following operations:
1. Disconnect the wiring connector from the
gear change lever position sensor.
46
Marea-Marea Weekend
ft 16v
Automatic transmission
Servicing and adjustments
21-27.
Refitting
Refit the selector lever position sensor as f o l lows:
1. position the sensor, tighten the central nut
and lock it with the washer;
2. from position P (fully rotated in a clockwise direction) move the pin of the lever
to position N (rotating the pin t w o n o t c h es in an anti-clockwise direction);
3. rotate the sensor so that the projection on
the top surface (1) lines up w i t h the side
machining on the pin ( 2 ) , then lock the
sensor in this position by tightening the
t w o side screws.
47
Automatic transmission
Marea-Marea Weekend
16v
<>
P|R|N D321
P4F45AB02
REMOVING-REFITTING GEARBOX
C O N T R O L UNIT (CONTROL M O D U L E )
The gearbox control unit is located underneath the dashboard by the glove compartment.
Before proceeding w i t h the removal operations, disconnect the negative lead from the
battery, then:
1. Remove the plastic protection under the
control unit.
2. Undo the nuts fixing the control unit to
the mounting bracket, disconnect the appropriate supply connectors and remove
the control unit.
WARNINGS
- Handle the control unit carefully to avoid
any impact.
- Do not remove the control unit cover or try
to dismantle it.
- Do not touch the connector pins directly.
- Insert the connector fully into the control
unit until it clicks.
48
Marea-Marea Weekend
ft 16v
Automatic transmission
Servicing and adjustments
21-27.
REMOVING-REFITTING
T R O L UNIT
SAFETY
CON-
REMOVING-REFITTING GEARBOX
COOLING RADIATOR AND FAN
OIL
Place the car on ramps, disconnect the battery's negative pole, remove the front left
wheel, drain the gearbox oil and then proceed as described below:
2. Remove the air intake duct by undoing the
bolts shown in the figure, securing it to
the front cross panel.
3. Disconnect the cooling fan supply wiring
connector.
4. Raise the car and, working from the left
wheelarch, undo the bolts securing the
cooling fan, then remove the fan.
49
Automatic transmission
Marea-Marea Weekend
ft 16v
50
Marea-Marea
Weekend^ 16v
Automatic transmission
Removing-refitting
21-27.
REMOVING-REFITTING GEARBOX
Place the car on ramps, disconnect the battery's negative pole, remove the front wheels
and drain the gearbox oil, then proceed as
described below:
1. Remove the air intake duct by undoing the
bolts shown in the figure, securing it to
the front cross panel.
2. Remove the air inlet pipe by undoing the
clips shown in the figure, then remove it
from the engine compartment complete
with resonator.
3. Left the cover protecting the battery's
positive pole and disconnect the cable;
undo the nut securing the battery to the
cage, then remove the battery from the engine compartment.
4. Remove the relay and fuse box cover by
undoing the bolt indicated.
51
Automatic transmission
Removing-refitting
21-27.
1. Remove the nuts securing the fuse and relay box to the battery cage, then move the
box over to one side.
2. Disconnect the i.e. control unit supply
connector.
3. Disconnect the earth cable (1), remove the
nuts securing the i.e. control unit mounting
bracket, then remove the control unit from the
engine compartment. The nuts indicated also
secure the starter motor supply cables and the
front cable/fuel injection cable connection.
4. Remove the bolts (1) and slacken the bolt
(2) securing the battery cage to the body
shell. Before removing the cage, disconnect
the cable retaining clip underneath.
5. Remove the split pin and washer shown in
the figure; lift the gear change control cable head so as to disconnect it from the
gear change lever position sensor.
52
Marea-Marea
Weekend^ 16v
Automatic transmission
Removing-refitting
21-27.
P4F53AB04
53
Automatic transmission
Marea-Marea
Weekend^ 16v
Removing-refitting
21-27.
1. Remove the bolt (1) securing the retaining bracket for the pipes shown in the f i g ure.
2. Remove the windscreen wiper arms (right
and left) by undoing the central fixing nut,
after removing the protective cap.
3. Remove the plastic covers from the space
under the windscreen, to allow the engine
support tool to be installed during removal
and refitting of the gearbox.
4. Remove the gearbox top mountings.
5. Fit a suitable supporting eye at the point
shown in the figure, to hook up the power
unit during removal of the gearbox.
54
Marea-Marea
Weekend^ 16v
Automatic transmission
Removing-refitting
21-27.
1. Fit the engine support
crossbeam
1860851000 and the special adaptor
1860851001 at the appropriate mounting
points.
a. Front mounting: fit the tool in the b o n net catch seating, so that it rests on the
front cross member.
b. Rear mounting: fit the tool level w i t h
the central reinforcement of the
fire-proof bulkhead.
c. Secure the cross member hook to the
eye positioned previously, near the
thermostat.
P4F55AB05
55
Automatic transmission
Marea-Marea
Weekend^ 16v
Removing-refitting
21-27.
56
Marea-Marea
Weekend^ 16v
Automatic transmission
Removing-refitting
21-27.
P4F57AB02
57
Automatic transmission
Marea-Marea
Weekendig|^
Removing-refitting
21-27.
58
Marea-Marea Weekend
ft 16v
Automatic transmission
Removing-refitting
21-27.
P4F59AB02
59
Automatic transmission
Marea-Marea Weekend
ft 16V
Removing-refitting
21-27.
1. Manoeuvre the hydraulic jack as appropriate to release the gearbox from the surrounding parts. Gradually lower the jack
and withdraw the gearbox.
Take particular care to prevent the
converter falling out of its seating.
When refitting, fit the gear change
control cable, then carry out the
checks described for removal of the
cable.
NOTE
WARNINGS
support
floor, to
external
shaped
P4F60AB03
60
P4F60AB04
Marea-Marea
Weekend^ 16v
Automatic transmission
Removing-refitting
21-27.
When fitting the gearbox, check that the centring pins are positioned correctly, and also
check that there is no gap between the c o n tact line between the engine and gearbox casing.
61
Automatic transmission
Marea-Marea
Weekend^ 16v
Removing-refitting
21-27.
When coupling the converter to the flywheel,
use bolts of the correct length (M8x1.25
bolts with tapered shakeproof washer drawing 46450230, of the dimensions indicated in
the figure) and make sure that they are not
mixed up with other bolts.
1. Bolts which are too long could damage
the other end of the converter and deform
the clutch seal.
2. Bolts which are too short may not w i t h stand the input torque and could break.
X
CM
H
A
P4F62AB04
62
Marea-Marea
Weekend^ 16v
Automatic transmission
Drive shafts
21-27.
REMOVING-REFITTING
Place the vehicle on ramps, remove the front
wheels, drain the gearbox oil and then proceed as described below:
1. Relieve the staking then remove the wheel
hub nut (gearbox side and timing gear
side).
2. Remove the wheelarch plastic trim on the
gearbox side by undoing the bolts and retaining button shown in the figure. To remove the trim, also disconnect the brake
pad wear sensor (repeat the procedure for
the other side).
3. Remove the nut securing the track rod end
to the vertical link, the remove the latter
from the vertical link arm using the puller
1847038000 (repeat the procedure on the
other track rod end).
4. Remove the bolts securing the vertical link
(gearbox side and timing gear side) to the
shock absorber.
63
Automatic transmission
Marea-Marea
Weekend^ 16v
Drive shafts
21-27.
1 . Rotate the vertical link in order to w i t h draw the drive shaft from the wheel hub
(repeate the procedure for the other side).
2. Disconnect the drive shaft on the gearbox
side from the differential, levering on the
anchorage point.
3. Disconnect the drive shaft on the timing
gear side from the differential, levering on
the anchorage point.
NOTE
DISMANTLING-REASSEMBLY
4. Place the drive shaft in a vice, then remove
the clips retaining the protective gaiter on
the sliding joint on the gearbox side.
64
Marea-Marea
Weekend^
m i6v
Automatic transmission
Drive shafts
21-27.
REFITTING
When refitting, reverse the procedure
described for removal.
Whenever a gaiter is removed, it is
advisable to replace it, and it is important to fill both the constant velocity joint or sliding joint and the
gaiter with TUTELA MRM2
grease.
65
Automatic transmission
Marea-Marea Weekend A* ^
Drive shafts
21-27
Joint classification
Category
Colour
Category
Colour
Green
Green
White
White
TRANSMISSION COMPONENTS
66
Marea-Marea
Weekend^
m lev
Automatic transmission
Valve assembly
21-27.
Disconnect the drive shaft from the differential as described above, then remove the oil
seal from the differential, using a screwdriver
as a lever.
When refitting, use the drift 1 8 7 0 6 2 9 0 0 0
w i t h an appropriate handle.
REMOVING-REFITTING VALVE A S S E M B L Y
Place the car on ramps, disconnect the battery's negative pole, drain the gearbox oil,
then proceed as described below, w o r k i n g
from under the vehicle:
1. Place a hydraulic jack under the bellhousing, then remove the power unit mounting
on the gearbox side to allow the valve assembly cover to be removed.
2. Undo the bolts securing the valve assembly cover and remove the cover.
3. Disconnect the valve assembly solenoid
supply connectors, disengage the gearbox
oil temperature sensor (1) from its mounting bracket and move the wiring aside.
67
Automatic transmission
Valve assembly
21-27.
lengths.
68
Marea-Marea
Weekend^ 16v
Automatic transmission
Valve assembly
21-27.
1. Fit the valve assembly cover and tighten
the bolts.
The bolts securing the valve assembly
cover are of different lengths. Arrange
the bolts as shown in the figure and
tighten them to a torque of 1.96 2.74 daNm.
NOTE
Finish refitting the valve assembly by reversing the procedure for removal.
K I C K - D O W N SWITCH
The kick-down switch is located on the accelerator pedal. To remove this s w i t c h , release the lugs which secure the switch to the
mounting bracket. Disconnect the supply
connector (1), then replace the switch.
It is virtually essential
the kick-down
switch
moved, as the retaining
break during
removal.
to replace
if it is relugs
could
69
Braking system
Marea-Marea Weekend
Index
33.
page
BRAKES
ANTI-LOCK
"Down Sized'
2
2
3
4
8
FRONT B R A K E S
-
Removing-refitting
Brake caliper
Brake discs
Brake pads
Bleeding
9
10
11
12
13
REAR B R A K E S
- Drum brakes
- Brake drums
<
- Self-adjusting device for recovering
clearance between shoes and drum
- Shoes
- Shoe cylinder
- Bleeding
- Diagram showing hydraulic operation
of brakes (front and rear - disc) and
mechanical operation of handbrake
- Disc brakes
- Brake caliper
- Automatic device for adjusting clearance between rear brake pads and discs
and handbrake
- Brake discs
- Brake pads
- Load proportioning valve
- Handbrake
page
14
17
18
19
19
20
21
22
23
25
26
27
28
30
A.B.S.Lucas
Composition
Operating principles
Components
Diagram and description of operation
of 'anti-lock brakes
M/irinn
W V I I I I I ^
H i a n K a m
wiu
Jjiui 11
fnr
>V!
A R Q
'
* **
32
33
34
40
I i ircic
'
uuuo
" D o w n Sized"
Fault diagnosis
Precautions to be observed on vehicles
fitted w i t h anti-lock brakes
Precautions to be observed during repair operations involving anti-lock
braking system components
Removing-refitting anti-lock braking
system components
46
48
48
48
49
Marea-Marea Weekend
Braking system
33.
P4F001D01
1.
2.
3.
4.
5.
6.
7.
Braking system
Marea-Marea Weekend
Hydraulic operation
33.
P4F002D02
B R A K E PEDAL
Removing-refitting
Proceed w i t h removing the brake pedal carrying out the following operations:
1. Remove the split pin and remove the brake
servo push rod from the pin on the brake
pedal.
2-3. Lift up the clutch pedal, undo the bolt
shown in the diagram fixing the brake
pedal, then remove it.
NOTE
with grease
the
for
be-
P4F002D04
Braking system
Marea-Marea Weekend
Hydraulic operation
33.
P4F003D02
Removing-refitting
Proceed w i t h removing the brake fluid reservoir by carrying out the following operations:
1. Disconnect the connector for the brake
fluid warning light, undo the reservoir cap,
then drain the fluid using a special syringe.
2. Remove the tank extracting it upwards.
A
NOTE
system
B R A K E PUMP
Removing-refitting (for 8" brake servo)
Proceed w i t h the removal of the brake pump
by carrying out the following operations
3. Undo the connectors for the brake pipes
using spanner 1856132000, in order not
to damage the actual connectors.
4. Undo the fixing nuts and remove the brake
pump.
Bleed braking
system
Braking system
Marea-Marea Weekend
Hydraulic operation
33.
Dismantling-reassembling
1. Longitudinal section of brake pump
2. When overhauling replace the seals; if
there are traces of abrasion or seizing on
the pump casing, replace the complete
brake pump.
BRAKE SERVO
3. Brake servo fitted on vehicle.
4. Check the recess of the hydraulic push rod
using a depth gauge.
NOTE
Braking system
Marea-Marea Weekend
Hydraulic operation
33.
Removing-refitting
Proceed w i t h the removal of the brake servo
by carrying out the following operations:
1. The arrow indicates the s o u n d - p r o o f i n g
plate. The accelerator pedal must be removed to facilitate the removal because
the fixing plate rests on the actual
sound-proofing plate.
2. Release the accelerator cable from the relevant pedal.
3. Undo the nuts shown in the diagram and
remove the fixing plate and the accelerator
pedal.
4. Remove the fixing buttons (1) and (2) for
the sound-proofing plate.
NOTE
Braking system
Marea-Marea Weekend
Hydraulic operation
33.
Marea-Marea Weekend
Braking system
Hydraulic operation
33.
Braking system
Marea-Marea Weekend ft
Hydraulic operation
33.
V A C U U M PUMP
P4F0O8D03
Braking system
Marea-Marea Weekend
Front brakes
33.
REMOVING-REFITTING
Remove the braking system components as
described below:
1 - 2 . Extract the clip (1), disconnect the flexible pipe acting on the unions using
spanner 1856132000; disconnect the
connector for the brake pad wear sensor.
NOTE
Braking system
Marea-Marea Weekend
Front brakes
33.
10
Braking system
Marea-Marea Weekend
Front brakes
33.
A
NOTE
before
refitting
B R A K E D I S C S - Dismantling-reassembling
3. Undo the bolts fixing the brake disc and remove it; when refitting remove any traces of
rust to ensure that the disc is perfectly perpendicular in relation to the hub.
4. Check that the disc is no more than 0.15 mm
off centre (for 0 257 mm discs) and 0.10 (for
0 284 mm discs); this value is measured 2
mm from the outer diameter of the disc.
11
Braking system
Marea-Marea Weekend
Front brakes
33.
1370 12v
1581 excluding C A
1910 T D *
1581 C A
174716v
1910 T D * *
1370 12v Weekend
1580 16v Weekend
1747 16v Weekend
1910 T D * * Weekend
1998 20v
2387 T D
1998 20v W e e k e n d
2387 T D W e e k e n d
mm
11,8-12,1
19,8 + 20,1
21,8 - 22,1
mm
10,20
18,20
20,20
mm
18,55
20,55
12
10,55
Marea-Marea Weekend
Braking system
Front brakes
33.
Replacing brake pads
When replacing the brake pads, proceed as
follows:
- disconnect the electrical connection for the
brake pad wear sensor;
- remove the caliper casing retaining spring;
- undo the bolts fixing the caliper casing and
replace the brake pads, w i t h o u t disconnecting the brake pipes.
BLEEDING
1. Manual bleeding.
The brake fluid recovered should not
be reused.
The level should be topped using using new brake fluid.
13
Braking system
Marea-Marea Weekend
Rear brakes
33.
DRUM B R A K E S
ift
12v
16v
ftl
16v
fft
TO
Removing-refitting
Proceed w i t h the removal of the rear
drum brakes carrying out the following
operations:
1. Undo the bolts fixing the brake drum
and remove it.
IM O T E
14
Braking system
Marea-Marea Weekend
Rear brakes
33.
P4F015D01
P4F015D02
3. Remove the outer casing for the handbrake cable from the brake back plate.
15
Braking system
Marea-Marea weekend
Rear brakes
33.
P4F016004
16
P4F016D05
Braking system
Marea-Marea Weekend
Rear brakes
33.
<I>
Rear brake components:
1. Shoes
2.
3.
4.
5.
NOTE
washer-clip
each time
<>
BRAKE DRUMS
2. Check the diameter of the brake drum.
The maximum permissible diameter for the
brake drum after wear is given in the table;
if the value is higher then the brake drum
should be replaced.
If the brake drums s h o w signs of deep
grooves or there is excessive wear, they
should be skimmed; w h e n the operation is
completed the value of the diameter
should not be higher than the figures given in the table.
1370 12v
1581 16v W e e k e n d
1747 16v W e e k e n d
1910 T D W e e k e n d
1581 16v
174716v
1910 T D
1370 12v Weekend
Brake d r u m diameter
Drum diameter
mm
mm
204,7
230
mm
204,2
229,50
203,1 + 203,4
228 -
228,6
17
Braking system
Marea-Marea Weekend
Rear brakes
33.
SELF-ADJUSTING DEVICE FOR RECOVERING CLEARANCE BETWEEN SHOES AND DRUM
P4F018D02
By means of the self-adjusting device, the clearance between the shoes and the drum is c o n stantly adjusted automatically for each braking,
assuming that an adjustment is necessary.
The device is composed of a rod (1) in w h i c h
an adjustment screw (2) to w h i c h a toothed
ring nut (3) is bolted slides freely .
In the rest position, the front shoe return spring
(6) keeps the device compressed, as a result of
w h i c h the ring nut (3) pushes the plate (4) in
contact with the end of the rod ( 1 ) .
The plate (4) is also subjected to a thrust action from the flexbile blade ( 5 ) . During the braking action
t h e H w o shoes move away from one another and come into contact with the drum; the t w o ends of the
device are kept in contact with the shoes by means of springs (7) and ( 8 ) .
The plate (4) thrust by the flexible blade (5) produces a reaction on the toothed ring nut (3) and, by
means of the clip (9) (in permanent contact w i t h the toothed ring nut), causes its rotation 01
During the release stage, the self-adjusting device is compressed once again by the action of the upper
shoe return spring ( 6 ) : the toothed ring nut (3) stops in the angular position assumed during braking.
This stop during the rotation stage is due to the friction between the plate (4) and the toothed ring nut
(3). With the toothed ring nut (3) prevented from rotating, if the wear due to previous braking is sufficient, the clip (9) moves and engages the next tooth LU. The maximum travel for the toothed ring nut (3)
on the adjustment screw (2) is one tooth (0.020 - 0.025 m m ) : the bedding in of the brakes after dismantling is an exception: the travel is t w o teeth (0.04 - 0.05 m m ) .
If following excessive braking the brakes should overheat and the temperature reach 100 -110C, then
the device comes into operation, the flexible blade (10) curves and stops the plate (4) in a neutral position LU.
18
Marea-Marea Weekend
Braking system
Rear brakes
33.
LU:
SHOES
2. Check the shoe. The minimum permissible thickness for the brake lining is 1.5
mm.
SHOE CYLINDER
Removing-refitting
To remove the shoe cylinder, carry out the
following operations:
3. Using tool 1856132000, undo the c o n nector for the brake pipe.
4. Undo the bolts fixing the shoe cylinder
and remove it.
5. Check the shoe cylinder components.
When overhauling always replace the
seals and the protective boots; if there are
irregularities w i t h the cylinder casing or
the pistons, replace the assembly.
Make sure that the bleed screw is not o b structed.
19
Braking system
Marea-Marea Weekend
Rear brakes
33.
BLEEDING
It is not advisable to reuse the brake fluid c o l lected.
The level should be topped up w i t h new
brake fluid.
The air should be bled from the rear
brakes using a lift with the rear suspension resting on the ground so that
the load proportioning
valve comes
into operation.
NOTE
20
Marea-Marea Weekend
| 2 O V T
Braking system
33.
P4F021DOI
1.
2.
3.
4.
5.
6.
7.
21
Braking system
Marea-Marea Weekend ft
20v
ft TO
Rear brakes
33.
DISC BRAKES
Removing-refitting
Proceed w i t h dismantling the rear
disc brakes carrying out the following
operations:
1. Extract the clip (1).
2. Undo the connector for the flexible
pipe
using
spanner
1856132000.
3. Loosen the tension of the handbrake cable
acting on the screw shown in the diagram
after having removed the control lever
cover.
4. Release the handbrake cable.
5. Undo the bolts fixing the brake caliper and
remove it.
22
Marea-Marea
W e e k e n d
ft
2 0
Braking system
ft TD
Rear brakes
33.
Before positioning
the new brake
pads the caliper piston must be fully
retracted by turning it in a clockwise
direction using tool
1856133000.
Also adjust the handbrake.
BRAKE CALIPER
Dismantling
Position the brake caliper in the vice, placing
the protection in position, then proceed as
described below:
3. Remove the flexible pipe undoing the appropriate connector.
4. Undo the bleed screw and remove it.
IMOTE
23
Braking system
Marea-Marea Weekend ft
20v
ft
TD
Rear brakes
33.
<>
1. Using tool 1856133000, remove the piston and the protective boot from the
caliper casing.
2. Remove the seal.
3. Check the caliper assembly components.
The piston and the caliper casing should
not show signs of abrasion or seizing or
else the caliper complete w i t h piston has
to be replaced.
In any case it is always necessary to replace the protective boot and the seal; also
make sure that the bleed screw is not obstructed.
Use a solution of hot water and FIA T
LDC detergent to wash the metal
components.
1.
2.
3.
4.
5.
6.
Refitting
4. Fit the piston in the caliper casing using
tool 1856133000.
Before fitting the piston in the caliper
casing, position the boot on the rear
part of it.
the parts concerned
before fitting.
24
with brake
fluid
Marea-Marea Weekend
!BI OV
2
ft
Braking system
TD
Rear brakes
33.
Filling the brake caliper
After overhauling the brake caliper and before refitting it on the vehicle it should be
filled in the following way:
- loosen the bleed screw;
- insert the end of a transparent pipe into the
bleed screw opening;
- using a normal container w i t h brake fluid,
introduce it into the caliper until air bubbles
come out of the threaded opening where
the flexible brake pipe is connected;
- lock the bleed screw.
P4F025D02
Piston
Female screw
Circlip
Spring
Control shaft
Ball
Helical track
Control lever
Shaft (rotary)
Braking system
Marea-Marea Weekend ft
20v
ft
TD
Rear brakes
BRAKE DISCS
Dismantling-reassembly
1. Undo the bolts fixing
the brake dies and remove it; when refitting
remove any traces of
rust to ensure that the
disc is perfectly perpendicular in relation
to the hub.
26
Marea-Marea Weekend ft
20v
ft
Braking system
TD
Rear brakes
33.
B R A K E PADS
Removing-refitting
To replace the brake pads, proceed as f o l lows:
1. Undo the bolts fixing the brake caliper to
the mounting bracket, then secure the
caliper as appropriate.
2. Extract the brake pads and position the
new ones.
The bolts fixing the caliper casing are
self-locking
and should be replaced
each time they are undone or loosened.
IM O T E
Bleeding
4. It is not advisable to reuse the fluid c o l lected. The level should be t o p p e d up
w i t h new brake fluid.
The brakes can also be bled using J o l lyfren equipment, following the procedure
described for the front brakes.
27
Braking system
Marea-Marea Weekend
Rear brakes
33.
LOAD PROPORTIONING V A L V E
Removing-refitting
Proceed with the removal of the load proportioning valve carrying out the following operations:
1. Remove the support for the end section of
the exhaust pipe.
2. Remove the support from the middle part
of the exhaust pipe.
3. Undo the nuts fixing the heat shield, then
remove it to facilitate access to the load
proportioning valve.
Undo the connectors for the flexible pipes and disconnect the spring
shown in the diagram.
The connectors are 11 mm and
13 mm, respectively; for the
former
use
spanner
1856132000,
for the 13 mm
ones use a fixed spanner taking great care not to damage
the connectors.
28
Braking system
Marea-Marea Weekend
Rear brakes
33.
1. Unscrew the retaining bolts and remove
the load proportioning valve.
P4F029D01
Adjustment
- Settle rear suspension;
- position the car (in running order, i.e. with
the coolant circuit fuel, spare wheel and
accessories correctly arranged and with a
full tank of fuel) on a horizontal plane with
wheels on the ground;
- load a weight P as shown in the table below
into the luggage compartment, as close as
possible to the centre of the floor pan in order
to achieve a load on the rear axle of 600 5
Kg, distributed equally over both wheels;
- loosen the bracket retaining bolt ( 1 ) ;
- apply torque wrench
1895873000 or
1895901000 to bracket eye (2)
- apply load C with value as shown in the
table below to the torque wrench;
- hold bracket (3) in this position and secure
bracket reatining bolt (1).
IMOTE Rep/ace the entire had
proportioning valve if working
incorrectly.
Marea
Marea Weekend
1370
1581 16v
1998 20v
ABS
1910 T D
2387 T D
137012v
174716v
P(Kg)
1581 16v
174716v
1910 T D
1581 B I P O W E R
1998 20v
2387 T D
125.4
125.4
125.4
94.5
94.5
94.5
109*
109*
109*
77.2*
77.2*
77.2*
7 0.01
7 0.01
5 0.01
7 0.01
C (daN) 70,01
5.5 0.01
Bleeding
braking
system
29
Braking system
Marea-Marea Weekend
Rear brakes
33.
Operation
The rear load proportioning valve is secured
to a bracket on the rigid rear axle. It modulates braking pressure in the rear brake circuit
in relation to the front wheel circuit according to load conditions and car deceleration.
The pressure difference is determined by the
position assumed by a spring connected to
stabilizer bar (4), which acts on the load proportioning valve piston.
PARKING BRAKE
30
Publication
no.
506.763/08
Marea-Marea Weekend
Braking system
Rear brakes
33.
Refit parts in reverse order and then adjust the parking brake.
IV-98 - Update
30/1
Braking system
Marea-Marea Weekend
Rear brakes
33.
Refit parts by reversing removal procedure. Then adjust the parking brake.
4
F
1
0
1
D
30/2
I V - 9 8 - Update
Braking system
Marea-Marea Weekend
Rear brakes
33.
Operation
The handbrake acts by means of a cable on
the rear brakes.
This cable is secured at the b o t t o m w i t h the
bracket (1) which is hinged at the t o p w i t h
the shoe (2) from the clip washer (3) (it must
always be replaced when overhauling the
rear brakes).
The bracket (1) in the upper part is also secured to the self-adjusting device for the recovery of the clearance produced by the
shoes, therefore the handbrake does not require adjustments.
The bracket (1) is kept in contact w i t h the
shoe (2) by means of the projection ( 5 ) .
Handbrake components
P4F031D03
1. Control
lever complete
with
toothed sector
2. Handbrake cable complete with
anchorage
3. Cable and outer casing
4. Support plate
NOTE
31
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
ANTI-LOCK BRAKES (A.B.S. Lucas " D o w n Sized")
COMPOSITION
The A.B.S. Lucas " Down Sized " system, featuring lightness, reliability and compactness (easy to fit), is
distinguished from other similar anti-lock braking systems by the presence on each branch of the system
of a single electro-hydraulic type " f l o w " valve w i t h both load and discharge functions compared w i t h
the t w o solenoid valves usually found in A.B.S. systems.
The characteristics described above, in addition to the use of micro-hybrid type electronic components,
allow for quieter and softer operation, considerably reducing the by now classical phenomenon of the
vibration of the brake pedal during the operation of the A.B.S.
The main components of the system are:
- the hidraulic control unit ( 1 ) w h i c h modulates the braking pressure at the brakes
- the sensors (5) and ( 1 1 ) , one for each wheel, w h i c h detect the angular rotation speed for the actual
wheels
Diagram
1.
2.
3.
4.
5.
6.
7.
32
showing
A.B.S. Lucas
"Down
8.
9.
10.
11.
12.
13.
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
The f o l l o w i n g complete the system:
- the hydraulic system pipes;
- special electrical wiring;
- a switch on the brake pedal for detecting the braking conditions;
- a warning light (7) (ABS warning light) in the instrument panel.
The presence of a fault causes the A.B.S. system to be de-activated immediately.
As the information relating to faults in the system is not covered by the Blink Code function, it can only
be received by connecting the Fiat-Lancia Tester or the Computerized Diagnostic Station to the diagnostic socket (14).
OPERATING PRINCIPLES
The function of the A B S system is to ensure the following for the vehicle in all driving conditions:
- stability
- driveability
- optimum braking
Optimum braking means optimizing the braking distances, taking advantage of the maximum adhesion
available guarateed by the ground.
During emergency braking the driver must be capable of:
- avoiding an obstacle
- taking a bend
- controlling the vehicle even with different adhesion for the wheels
The most important attribute of an A B S system, apart from achieving improved braking distances, is the
possibility of guaranteeing the manoeuvrability of the vehicle during emergency braking
N OTE Since the adhesion between the road surface and the tyre is restricted by the physical
characteristics of the contact elements the adhesion coefficient can, with the use of ABS systems,
gradually becoming more sophisticated, can be better exploited but not overcome.
Therefore emergency braking on smooth road surfaces always takes longer than on road surfaces with better grip.
The dangers caused by excessive speed cannot be compensated for by any type of A.B.S.
system.
Creeping
Creeping is the adimensional expression expressed as a percentage for the ratio between the difference
of the speeds of the vehicle Vv and the speed of the wheel Vr, and the speed of the actual vehicle Vv.
Creeping: X= (Vv - V r ) / Vv
a) moving wheel Vv = Vr; X= 0
33
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
COMPONENTS
Electro-hydraulic control unit
The electro-hydraulic control unit comprises t w o units (one electronic and the other electro-hydraulic)
which cannot be divided, therefore if there is a problem w i t h one of the t w o units then the entire electro-hydraulic control unit has to be replaced.
The electronic control unit is connected to the A.B.S. system wiring by means of a multiple connector
with 28 terminals, 18 of which are used.
According to the signals coming from the sensors at the wheels and by means of typical maps stored in
the memories, the electronic control unit manages the operation of the electro-hydraulic control unit.
The hydraulic control unit, connected through the braking system pipes to the brake pump and to the
other braking system components, features an electro-hydraulic type " f l o w " valve for each branch of
the system endowing the system w i t h smoother operation free from the phenomenon of vibration t y p i cal to similar anti-lock braking systems which have t w o or three way joint "charging" and "discharging"
solenoid valves.
P4FO33D01
Electro-hydraulic
connector
I N T E G R A T E D E L E C T R O N I C C O N T R O L UNIT
The electronic control unit is connected in a binding way to the hydraulic unit. If there is a problem w i t h
the electronic unit then the entire unit has to be replaced, i.e. the hydraulic unit and the electronic one.
Hardware
The main input information for the t w o micro-calculators is the signals for the 4 rpm sensors which are
processed in special elements (integrated circuits) for the requirements of the actual micro-calculators.
The input information is processed and the results are compared for a safety check.
The o u t p u t signals to the actuators (electro-magnetic valves) are also transmitted by special elements
(integrated circuits) to the power transistors.
34
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
Software
The software fitted in the micro-calculators is divided into three elements:
1.Regulation software
It processes the signals arriving from the rpm sensors and decides the operation of the actuators in the
hydraulic unit. The modulation of the pressure determines the braking force at the individual wheels.
2.Safety software
It regularly controls the condition of all the electrical components inside and outside the control unit for
recognizing a possible defect. The first time the engine is started up after the ignition is switched O N ,
when a speed of 10 k m / h is reached the function is also controlled. As soon as the safety software recognizes an error, the system switches off and informs the driver by the warning light in the instrument
panel coming on.
3.Diagnostic software
It memorizes the error code produced by the safety software in a stable memory and allows the exchange of data with the Fiat Tester or the Computerized Diagnosis Station
Immediately after switching on, the ABS warning light comes on for around four seconds and then goes
out if the system is okay.
In these four secondsthe control unit carries out different operating tests.
The logic installed in the micro-calculatr controls firstlythe components inside the control unit and then
the external electrical components.
After about four seconds of this test programme, soon after the ABS warning light goes out, the pump
motor is tested.
The safety software constantly controls the electrical components whilst the vehicle is operating.
If there is a fault in the system, the A B S warning light comes on, but goes out after four seconds. In this
case the ABS is switched off, whilst the conventional system remains intact.
As stated, the ABS system has safety software which regularly controls the condition of all the electrical
components inside and outside the control unit to identify possible faults.
In addition to this, in the case of a fault one or more error codes are set which give information on the
cause of the fault.
The error codes are stored in a stable memory and remain available even after the ignition is switched off
or the battery disconneted.
The control unit can memorize up to six different error codes.
Error codes table
CODE
77
56
57
62
63
64
65
66
67
68
69
71
72
73
DESCRIPTION
Internal defect
Battery voltage too low
Battery voltage too high
Left front rpm sensor broken or cc. to " + "
Right front rpm sensor broken or cc. to " + "
Left rear rpm sensor broken or cc. to " + "
Right rear rpm sensor broken or cc. to " + "
Left front rpm sensor broken or cc. to earth
Right front rpm sensor broken or cc. to earth
Left rear rpm sensor broken or cc. to earth
Right rear rpm sensor broken or cc. to earth
Left front rise in speed
Right rear rise in speed
Left rear rise in speed
CODE
74
31
32
33
34
16
17
18
19
38
42
54
55
44
DESCRIPTION
Since the parameters w h i c h the control unit controls (speed and acceleration of the wheel) are affected
by the inertia of the wheel/tyre assembly, vehicles equipped w i t h anti-lock braking systems must only
have the wheel rims, tyres and brake pads recommended by the Manufacturer.
35
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
ELECTRO-HYDRAULIC CONTROL UNIT
The electro-hydraulic control unit is connected to the brake pump and the brake calipers by means of
the braking system pipes illustrated in the diagram below and, together w i t h the electronic control unit it
forms the electro-hydraulic control unit.
Its task is to vary the pressure of the brake fluid, according to the electrical signals coming from the electronic control unit.
The electro-hydraulic control unit (1) is composed of:
- a single electro-hydraulic type valve for each of the four branches of the braking system, commonly
k n o w n as the " v l o w valve";
- a t w i n circuit electric pump ( 2 ) ;
- an electrical connector with 28 terminals;
- t w o expansion chambers and t w o silencer chambers;
Whilst the flow valve only operates thanks to the difference in pressure between the t w o ends, the
solenoid valves and the electric pump are operated by the electronic control unit on the basis of the signals from the four rpm sensors in the wheels.
The electro-hydraulic unit is connected to the braking system by means of connectors identified by
codes as illustrated in the diagram.
Components
and identification
HZ1 Supply
connector
from brake pump
(Primary circuit)
M12x1
HZ2 Supply
connector
from brake pump
(Secondary
circuit)
M10x1
HR Right rear caliper supply
connector
M10x1
VL Left front
caliper
supply
connector
M12xl
36
of electro-hydraulic
control unit
F036Dm
out/eTs
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
The control unit cannot be overhauled; if there is a problem it must be replaced as a w h o l e .
It is available as spares filled with brake fluid (DOT 4 ) .
The operation of bleeding and refilling the braking system is the same as for a conventional system.
NOTE
To prevent errors when connecting the various braking system circuits during service operations, the connections for the hydraulic modulator unit connections to the right and left branches of the circuit and to the main and secondary connections for the braking pump are different
sizes (M 10x1 and Ml2x1), also the connectors can be identified by the codes as shown in the
diagram.
When the electro-hydraulic
control unit has to be removed from the vehicle and moved, it
should be kept in a vertical position (connections facing upwards) with the connections
closed
in order to prevent brake fluid from escaping.
1. Maximum mangnetic f l o w
2. Minimum magnetic f l o w
3. Progress of alternating voltage
4. Gap
Front
sensor
The magnetic flow lines close towards the teeth of a toothed wheel (flywheel) facing the sensor w h i c h
rotates w i t h the wheel. Passing from a solid to a space, depending on whether or not there is a tooth,
causes a variation in the magnetic f l o w sufficient to create an electro-motive force at the sensor terminals and consequently an alternate electrical signal for the electronic control unit.
37
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
The internal elements of the sensor (coil and permanent magnet) are completely immersed in a protective resin and surrounded by a plastic casing. A brass bushing, fitted in the sensor casing, fixes the latter
w i t h o u t producing distortions.
1.
2.
3.
4.
5.
6.
7.
P4F038D01
Front sensor
The correct distance (gap), to obtain correct signals, between the end of the sensor and the flywheel
should be between:
0.645 - 1.305 m m f o r the f r o n t w h e e l s ( w i t h the w h e e l s r a i s e d o f f t h e g r o u n d )
0.060 - 1.180 m m f o r the rear w h e e l s
This distance cannot be adjusted therefore if the value for the gap is outside of the tolerances, check the
conformity of the sensor and the flywheel.
The electrical resistance expressed in Ohm inside the sensor is equal to:
1400 - 1200 O h m f o r the f r o n t s e n s o r s
1650 - 1450 O h m f o r the rear s e n s o r s
P4F038D02
Positioning
38
P4F038D03
Positioning
the rear
sensor
Marea-Marea Weekend
Braking system
Anti-lock brakes
33.
The flywheels for the front wheels are a press fit on the wheel side constant velocity joints, whilst the
ones for the rear wheels are a press fit on the wheel hubs and have 44 teeth.
17
18
does not detect a fault), the warning light (2)
7 8 goes out.
If the warning light (2) remains on then this
means that there is a problem in one or more
+15
of the A.B.S. system components.
Under these circumstances the A.B.S. system
is disabled and the conventional braking sys5 6 7 Q1
tem only operates.
If the warning light (2) does not come on
with the key inserted, then the problem
should be sought in the actual warning light
|R1
R2
or in the electrical connection ( + 15) between the ignition switch and the warning
light.
After starting, at a speed of 10 k m / h , the sysP4F039D03
tem test system starts to operate.
A
B
S
control
unit
D1: protective diode
1)
D2: LED
2) Warning light
R1 and R2: charge resistances
39
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
D I A G R A M AND D E S C R I P T I O N O F O P E R A T I O N OF A N T I - L O C K B R A K E S
The A B S "Lucas" F-DS system is the type w h i c h 4 channels and is "additional" to the conventional
braking system w i t h an "X" type circuit.
In future, for purposes of simplicity, the operation of a single channel will be dealt w i t h and this description can be extended to the remaining ones.
When the service brake is operated (through the pedal) the master cylinder (1) creates a pressure w h i c h
is transmitted w i t h o u t obstacles through the hydraulic unit (2) to the wheel brake ( 5 ) .
The electronic control unit (3) integrated in the hydraulic unit (2) receives the four rpm sensor (4) signals as its main input information.
As soon as it recognizes that a wheel is locked, the control unit (3) activates the corresponding solenoid
valve inside the hydraulic unit ( 2 ) , thereby producing a reduction inpressure in the wheel-brake w h i c h
gives rise to an adjustment process made up of successive pressure increase and decrease stages w h i c h
last until the corresponding wheel no longer tends to become locked.
1. Master cylinder
2. Hydraulic unit
40
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
If the control unit recognizes a fault in the ABS system, the system is switched off and the driver is i n formed by the ABS warning light coming on whilst the efficiency of the conventional braking system is
unaltered.
The digram below shows the operating principle of the Lucas " D o w n Sized" A.B.S. braking system
14
1.
2.
3.
4.
5.
6.
7.
8.
9.
15
Master cylinder
Brake servo
Silencer chamber
Silencer chamber
Recovery pump motor
Recovery pump
Recovery pump
Expansion chamber
Expansion chamber
10.
11.
12.
13.
14.
15.
16.
17.
HR.
VL.
VR.
HL.
41
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
Rest position (Normal braking)(Diagram p/t Stage 1)
Unlike what takes place in ordinary ABS systems w i t h t w o valves per channel, in this case the so-called
"input" solenoid valve is replaced by a hydraulic valve (7) known as the "flow valve".
The " f l o w valve" is constructed in such a way that, when the system is not operational (i.e. when the dynamic conditions for the wheels do not require the intervention of the A.B.S. system), the regulator and
all other hydraulic elements remain inactive.
In these circumstances the f l o w valve solenoid (16) does not electrically supplied by the electronic c o n trol unit ( 1 ) , is closed and the f l o w valve (7) is in the rest position thrust by the spring (5).
As the hydraulic f l o w between the master cylinder (10) and the brake caliper (3) is not in any shuttered,
the pressure in the circuit is directly proportional to the force applied by the brake pedal as illustrated in
the diagram.
42
p: Pressure
t: Time
9. Regulation edge
10.
11.
12.
13.
14.
Master cylinder
Brake servo
Silencer chamber
Recovery pump
Expansion chamber
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
Pressure reduction stage (Diagram p/t Stage 2)
When the braking force increases the deceleration of the wheel consequently increases: this produces a
deceleration of the vehicle (which may cause the wheel to slip).
In order to prevent the loss of adhesion between the wheel and the ground, the slipping value should
not exceeed a pre-set value; if this is not the case the wheel will lack direction and the braking distances
will increase.
In these circumstances the rpm sensor (2) signals that the deceleration values reached are such as to adversely affect the grip of the wheel with the ground: at this point the electronic control unit (1) controls
the activation of the solenoid (16) for the corresponding flow valve creating a difference in pressure
through the aperture (8).
The difference in pressure, overcoming the reaction force which the spring (5) exerts on the f l o w valve
( 7 ) , causes a movement w h i c h :
- interrupts the connection between the master cylinder (10) and the brake caliper ( 3 ) ;
- creates a connection between the brake caliper (3) and the expansion chamber ( 1 4 ) .
P4F042D01
Brake caliper
Flywheel
Flow valve spring
Regulation edge
7. Flow valve
p: Pressure
t: Time
9. Regulation edge
10. Master cylinder
11. Brake servo
12. Silencer chamber
13. Recovery pump
14. Expansion chamber
15. Recovery pump motor
16. Flow valve solenoid
43
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
The excess brake fluid (E) can therefore flow from the brake caliper (3) through the regulation edge (6)
into the expansion chamber (14) w i t h a consequent reduction in the value of the pressure in the brake
caliper, as illustrated in the diagram.
At the same time as the supply of the solenoid (1 6) w i t h the consequent opening of the f l o w valve ( 7 ) ,
the electronic control unit (1) starts up the motor (15) and consequently the recovery pump (13) so
that the brake fluid having flowed into the expansion tank (14) is returned, via the silencer chamber
(12) and the master cylinder (10), to the brake fluid reservoir.
As long as the solenoid (16) keeps the f l o w valve (7) open and there is consequently a difference in
pressure between the master cylinder (10) and the brake caliper ( 3 ) , i.e. between the inlet and the outlet
of the f l o w valve ( 7 ) , the latter remains in the position illustrated and produces a constant f l o w (D)
through the regulation edge (9).
The equilibrium condition in which the f l o w valve (7) finds itself is produced exclusively by the difference in pressure through the aperture (8) and the reaction force of the spring (5) and is'not affected by
the pressure created by the master cylinder (10) or that in the brake caliper ( 3 ) .
P4F043D01
44
p: Pressure
t: Time
Regulation edge
Master cylinder
Brake servo
Silencer chamber
Recovery pump
Expansion chamber
Recovery pump motor
Flow valve solenoid
Marea-Marea Weekend
Braking system
Anti-lock brakes
33.
When, although the braking action produced by the pressure on the brake pedal by the driver persists,
the slipping of the wheel goes below the critical value, i.e. the danger of the actual wheel locking no
longer exists, the control unit (1) removes the supply from the solenoid (16) and the f l o w valve (7)
closes.
In these circumstances the f l o w which is recalled by the pump (13) through the expansion chamber
(14) passing through the valve (16) is interrupted.
Moreover, as there continues to be a difference in pressure between the master cylinder (10) and the
brake caliper ( 3 ) , the flow valve (7) remains in the same position and a constant volume f l o w (F) enters
the brake calliper consequently causing a gradual increase in pressure as illustrated in the diagram.
The pressure increases until the the sliding value for the wheel is once again close t o the critical value
w h i c h makes a pressure decrease stage necessary once again.
These pressure increase and decrease stages are repeated w i t h a frequency of several cycles per sencond
until the pressure in the brake caliper approaches a value which causes the wheel to lock.
When the pressure in the brake caliper (3) is restored to the same value as in the master cylinder ( 1 0 ) , as
there is no force capable of overcoming the action of the spring ( 5 ) , the f l o w valve (7) returns t o the rest
position.
45
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
WIRING DIAGRAM FOR L U C A S "Down Sized" A.B.S.
1 25 19
10
28
11
18
20
24 27
1 11
Cable
N colour
BR
M
12
13
14
15
', CD 00
11
B
M
N
R
C
10
28
8 18 9
10
Destination
T o t h e d i a g n o s t i c socket line K
Spare
Spare
Spare
Spare
T o the
T o the
To the
T o the
Identification
46
27
1
2
3
4
5
6
7
8 16
27
23 26
26
1.
2.
3.
4.
5.
6.
7.
8.
Cable
N colour
16
17
18
19
20
21
22
23
24
25
26
27
28
R
CN
AB
RN
_
G
M
N
M
R
Destination
T o t h e right f r o n t r p m sensor T o the right rear rpm sensor T o the failure w a r n i n g light
T o the d i a g n o s t i c socket line L
T o the brake lights s w i t c h
Spare
Spare
T o the left rear rpm sensor T o the right rear rpm sensor +
Diagnostic socket earth
T o the left rear r p m sensor +
T o the earth
T o the 6 0 A positive battery fuse +1 2V
connectors
Marea-Marea Weekend
Braking system
Anti-lock brakes
33.
The electrical system for the Lucas " D o w n Sized" A.B.S. system is special; the electrical connections between the individual components such as the wheel rpm sensors, the failure warning light, the brake
lights switch, the diagnostic socket, the supplies, etc. are joined to form a cable loom w h i c h has a m u l t i ple connector w i t h 28 terminals.
The installation of this cable loom is protected against water, because the presence of oxidation or corrosion could give rise to high contact resistances; there could be a drop in voltage in certain cables
(compared w i t h the electronic control unit) which could causethe malfunction of the entire system and
therefore cause it to be switched off or cause the limited operation of the electro-magnetic valuves and
the recovery pump which w o u l d result over a prolonged period in a reduced capacity.
The electronic unit (1) is supplied directly by
the battery (10) thanks to:
- a 6 0 A f u s e ( 7 ) , positioned as illustrated in
the diagram, on the right side of the engine
compartment protected by a cover, c o n nected to terminals (10) and (28);
- the ignition switch (11) through the 10A
fuse (6) housed near the lamp on the right
side of the engine compartment and protected by a cover, connected to the terminal (11). The earth is connected to terminals (9) and (27).
There are t w o relays in the control unit w h i c h
cannot be replaced but, precisely for this reason, are guaranteed to work; one allows the
supply of the four flow valves according to
the commands of the micro-processors, the
other allows the supply of the recovery
pump, alwasy on the command of the m i cro-processor.
The circuit for the switch on the brake pedal
closes at the control unit through the connection (2) w h e n the brake pedal is pressed;
this connection assists the electronic control
unit in controlling the braking in certain conditions.
As this connection does not adversely affect
the correct operation of the system, any irregularities are not signalled by the warning light
coming on.
The amber coloured failure warning light, located in the control panel, is supplied by the
ignition switch ( + 15) and the A.B.S. control
unit (pin 18); it remains on as commanded by
the micro-processor if a failure is confirmed
to notify the user that the A.B.S. is disabled
and therefore only the conventional braking
system is operating; in addition its coming on
indicates any irregularities in the electrical
connections for the warning light itself.
47
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
FAULT DIAGNOSIS
The fault diagnosis may be only be activated w i t h the vehicle stationary
It is possible to search for and identify any defects in the Lucas A.B.S. system by connecting one of the following instruments to the diagnostic socket illustrated in the diagram on the previous page:
- Fiat-Lancia Tester
- S.D.C.-Computerized Diagnosis Station
- Examiner
When the Tester is connected, the A.B.S. system is disabledand the failure warning light remains on.
If the control unit detects a fault, the system is disabled and the failure warning light comes on. This defect is recorded in a permanent memory and this error is cancelled, after the fault has been eliminated, by
the Tester at the end of the diagnosis or automatically after the engine has been started up 20 times.
If there are several errors, the control unit is capableof memorizing up to six different codes.
P R E C A U T I O N S TO B E O B S E R V E D ON V E H I C L E S F I T T E D W I T H A N T I - L O C K B R A K E S
Before carrying out welding operations using electrical welders, the connector should be disconnected
from the electronic control unit.
If the battery is being removed, when refitting it the terminals should be properly tightened.
In order to replace the electronic control unit it is necessary to remove the entire hydraulic unit, for reasons of space and in order not to damage the internal connector.
Before proceeding w i t h the removal of the electro-hydraulic control unit, the negative lead should be
disconnected from the battery.
For painting operations, the electronic control unit can withstand temperatures of up to 80C.
Every time after a hydraulic unit, rpm sensor, electronic control unit or wires are replaced (especially f o l lowing an accident) the A.B.S. system should be checked using the Tester.
After any operation to the A.B.S. system hydraulic circuit or the braking system, it should be filled with
DOT 4 brake fluid and bled and all the connecting point seals checked.
The hidraulic control unit is supplied filled with DOT 4 brake fluid. The operation of bleeding and filling
the braking system is the same as for a conventional braking system, but takes longer
Check that the pipes are not, at any point, in contact with the bodyshell in order to avoid not only the
danger of damage to the protection of the actual pipes, but also the transmission of noise during the opertion of the A.B.S. If it is necessary to loosen/remove the connecting pipes, after refitting them the system must be checked for leaks.
Do not introduce mineral oil into the braking system because ail the seals will be damaged.
In the case of accidental introduction, replace: the hydraulic unit, brake pump and calipers
48
Marea-Marea Weekend
Braking system
Anti-lock brakes
33.
P4F048D02
REMOVING-REFITTING
ANTI-LOCK
BRAKING S Y S T E M C O M P O N E N T S
Electro-hydraulic unit
After having disconnected the negative lead
from the battery, proceed w i t h the removal of
the electro-hydraulic unit by carrying out the
following operations:
1. Remove the complete air inlet duct, acting
on the retaining bands s h o w n in the diagram.
2. Remove the protective cover for the fuses
and relays.
3. Release the connector for the rpm sensor,
then undo the nut fixing the m o u n t i n g
bracket for the fuses and relays and place
it at the side.
4. Disconnect the connector for the brake
fluid level sensor from the reservoir cap,
then undo the actual cap.
49
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
ilA
2. Undo the bolts fixing the brake fluid reservoir to the partition between the passenger compartment and the engine compartment; place the actual reservoir to the side.
hydraulic
make
system
Disconnect the cables shown in the diagram from the retaining bands to allow the
removal of the supply connector for the
electro-hydraulic unit.
Disconnect the supply connector for the
electro-hydraulic unit by pulling the attachment device in the direction of the arrow.
50
Marea-Marea Weekend
Braking system
Anti-lock brakes
33.
51
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
0,645 + 1,305 m m
52
Marea-Marea Weekend
Braking system
Anti-lock brakes
33.
P4F052D02
53
Braking system
Marea-Marea Weekend
Anti-lock brakes
33.
0,06 + 1,18 m m
12v
I^P) 16v
|^^| 16v
2. For vehicles with rear drum brakes the actual drum has to be removed to check the
value of the gap between the rpm sensor
and the flywheel on the rear wheel hub.
0,06 + 1,18 m m
I 20v
(with w h e e l s raised o f
the ground)
TD
A
54
Steering
Marea-Marea Weekend
Contents
41.
page
UPPER S T E E R I N G S Y S T E M
-
Steering wheel
Stalk unit base
Steering column
(gnition switch block
1
2
3
4
POWER-ASSISTED STEERING
- Description and operation
- Front wheel toe-in
5
7
XI <ih UptidU-
1370
1581
1747
1998
2387
1910
12v engine
16v engine
16v engine
20v engine
TD engine
TD engine
13
16
18
21
23
25
Marea-Marea Weekend
Steering
Upper steering system
41.
STEERING WHEEL
Removing-refitting
To remove the steering wheel, proceed as f o l lows:
1. using a screwdriver, prise off the horn
push cover;
To remove the steering wheel on vehicles fitted with AIR BAGS, see the
procedure described in Sec. 55.
Steering
Marea-Marea Weekend
STALK U N I T BASE
Removing-refitting
To remove the stalk unit base, proceed as f o l lows:
1. undo the screws indicated and remove the
steering column bottom shroud;
2. undo the screws indicated and remove the
steering column top shroud;
3. using an Allen key, undo the screw on the
collar securing the stalk unit base, and
withdraw the latter;
4. disconnect the electrical connectors of the
stalk unit base and remove it.
Marea-Marea Weekend
Steering
Upper steering system
41.
STEERING C O L U M N
Removing-refitting
To remove the steering column, proceed as
follows:
1. remove the bolt securing the lower c o l umn to the steering pinion;
P4F003F01
P4F003F03
P4F003F04
Steering
Marea-Marea Weekend
Dismantling-reassembly
To dismantle the ignition switch block, proceed as follows:
1. using a punch, unto the shear bolts securing the ignition switch block mounting;
NOTE
When refitting,
use
shear bolts and tighten
until the hexagonal
shears.
new
them
head
Steering
Marea-Marea Weekend
Power-assisted steering
41.
D E S C R I P T I O N AND OPERATION
The power steering system comprises:
- a feed reservoir located in the engine compartment;
- a vane pump, driven by the engine w i t h a maximum f l o w and pressure valve;
- a set of connecting pipes between pump-distributor valve-master cylinder-reservoir;
- a rack-and-pinion hydraulic steering gear.
1. Drive shaft
2. Pump body
3. Vane impeller
4. Seal
X I - 9 6 - Update
Pump
Fluid delivery pipe to p u m p
Fluid reservoir
Fluid return pipe to reservoir
Power-assisted steering gear
Pressurized fluid delivery pipe
Steering
Mates-Marea Weekend
Power-assisted s t e e r i n g
41.
<>
The power steering assembly and vane pump should not be dismantled into their
for any reason, but sent to the Manufacturer for overhaul.
components
Checking fluid level: the fluid level should be checked w i t h the engine off and cold, and topped up as
necessary.
Marea-Marea Weekend
Steering
Power-assisted steering
41.
A
IM O T E
The power steering system is self-bleeding: it is bled by turning the steering wheel fully to the
right and left with the engine running and the car stopped.
This operation must be carried out whenever the connecting pipes are removed and refitted.
If the steering becomes hard, the pump drive pulley belt may be slipping or the fluid le vel may be
low.
If there is a fault in the pump, master cylinder or distribution valve, the power steering will function as an ordinary mechanical steering gear.
The front wheel toe-in is adjusted by slackening the tie rod nut and screwing or unscrewing the tie rod
until the specified toe-in value is obtained, without changing the position of the steering wheel spokes.
Steering
Marea-Marea Weekend
RACK-AND-PINION S T E E R I N G GEAR
Removing-refitting
Before removing the power steering gear,
drain the fluid from the reservoir.
NOTE
Marea-Marea Weekend
Steering
Power-assisted steering gear
41.
P4F009F04
Steering
Marea-Marea Weekend
The gear linkages should only be dismantled on the 1370 12v - 1580 16v 1747 16v - 1998 20v engines.
10
Marea-Marea Weekend
Steering
Power-assisted steering gear
41.
11
Steering
Marea-Marea Weekend
IMOTE
Rack-and-pinion
gear assembly
r%-
. .-
P4F012F03
power
steering
Dismantling-reassembly
1. slacken the tie rod nut then unscrew the
tie rod until you can remove it;
IMOTE
12
M
I OT E
Carefully check that the dust excluder has no holes or tears, otherwise it
will have to be replaced.
excluder
specified
Steering
Marea-Marea Weekend
1. Drain the power steering fluid from the reservoir, collecting it in an appropriate c o n tainer.
2. Undo the bolts securing the steering fluid
reservoir to the bulkhead.
3. Disconnect the hose indicated, w h i c h returns fluid to the reservoir.
4. Disconnect
connector.
X I - 9 6 - Update
the
Lambda
probe
wiring
12/1
Steering
Marea-Marea Weekend
12/2
XI-96 - Update
Steering
Marea-Marea Weekend
<i>
XI-96 - Update
12/3
Steering
Power steering pump
41.
Removing-refitting
13
Steering
Marea-Marea Weekend
fti*
14
Marea-Marea Weekend ft ^
Steering
Power steering pump
41.
H
iSBj
[SBj
NOTE
To refit the power steering pump, reverse the procedure for removal.
P4F015F03
15
Steering
Marea-Marea Weekend
ft 16v
Removing-refitting
Before removing the power steering pump,
drain the fluid from the reservoir.
IMOTE
16
Marea-Marea Weekend
ft
16v
Steering
Power steering pump
41.
17
Steering
Marea-Marea Weekend i ^ .
Removing-refitting
Disconnect the battery's negative pole, and
drain the fluid from the power steering pump
reservoir.
NOTE
P4F018F02
18
P4F018F03
Marea-Marea Weekend
fti*
Steering
Power steering pump
41.
P4F019F03
P4F019F04
19
Steering
20
To refit the power steering pump, reverse the procedure for removal.
Marea-Marea Weekend
Steering
ft 20v
Removing-refitting
Before removing the power steering pump,
drain the fluid from the reservor and disconnect the battery's negative pole.
IMOTE
IMOTE
To refit the power steering pump, reverse the procedure for removal,
then refit and tension the belts as
described in Section 10.
21
Steering
Marea-Marea Weekend
ijpuov
Power s t e e r i n g pump
41.
Q
1860888000
P4F022F01
P4F022F02
Dismantling-reassembly
pump
power
steering
1860888000
P4F022F05
22
Marea-Marea Weekend ft
Steering
TO
Removing - refitting
Place the car on ramps, disconnect the battery's negative pole, then proceed as f o l l o w s :
power
Remove
the auxiliary
components
drive belt as described in Section
10
and remove the alternator as described
in Section 55.
23
Steering
Marea-Marea Weekend ft TD
24
To refit the power steering pump, reverse the procedure for removal.
Stee ring
Power steering pump
4lT
At the time of going to print, the documentation relating to this engine was not yet available.
25
Marea-Marea Weekend
Contents
44.
page
FRONT SUSPENSION
-
1
1
5
7
13
REAR SUSPENSION
-
-
15
16
21
23
27
WHEEL GEOMETRY
Front wheel geometry
Rear wheel geometry ,
J
Copyright
Fiat Auto
28
29
Marea-Marea Weekend
DIAGRAM OF FRONT S U S P E N S I O N A S S E M B L Y
P4F001G01
WISHBONE AND S T E E R I N G S U B F R A M E
Removing
To remove the wishbone and
steering subframe, place the
vehicle on ramps, remove the
front wheels and the front section of the exhaust pipe, then
carry out the f o l l o w i n g operations:
1. undo the bolt securing the
wishbone balljoint to the
vertical link;
2. Undo the nut securing the
link between the anti-roll
bar and shock absorber, and
disconnect the link;
P4F001G03
P4F001G02
Marea-Marea Weekend
Front suspension
44.
Marea-Marea Weekend
"Vs.
If
lis
\r
P4F003G05
Marea-Marea Weekend
Front suspension
44.
Refitting
NOTE
for removal.
are
removed-refit-
Dismantling-reassembly of
anti-roll bar from steering
subframe
Checking anti-roll bar
The rubber mountings and the
bar itself must not s h o w signs
of damage, otherwise they will
have to be replaced.
Marea-Marea Weekend
P4F005G02
P4F005G03
SPRING-SHOCK ABSORBER A S S E M B L Y
Removing-refitting
To remove the spring-shock absorber assembly, proceed as follows:
1. Undo the bolts securing the shock absorber top plate to the body shell;
2. undo the bolts securing the shock absorber to the vertical link and remove the coil spring assembly
and damper.
Marea-Marea Weekend
Front suspension
44.
Dismantling-reassembly
Separate the coil spring from the damper by
carrying out the following operations:
1. place the spring-shock absorber assembly
on the pneumatic tool 1874555000 and
operate the lever (1) to lock it;
2. adjust the position of the hooks ( 2 ) ,
bringing them up to the spring, then put
pressure on the tool until the spring begins to compress;
3. remove the dust excluder using a screwdriver;
4. undo the nut securing the top plate to the
shock absorber strut and remove the plate,
then withdraw the spacer, spring and
end-of-travel stop.
Marea-Marea Weekend
IM OTE
Marea-Marea Weekend
Front suspension
44.
Publication
no. 506.763
Marea-Marea Weekend
<i>
Marea-Marea Weekend
Front suspension
44.
Dismantling
To dismantle the vertical link and hub, proceed as follows:
- dismantle the wheel hub from the vertical
link using a press;
the
the
the
in-
P4F010G04
10
1.
2.
3.
4.
5.
Wheel hub
Brake disc
Vertical link
Ball bearing
Constant velocity joint
Publication no.
506.763
Marea-Marea Weekend
Front suspension
44.
<I>
11
Marea-Marea Weekend
Front suspension
44.
P4F012G04
P4F012G01
P4F012G02
12
Marea-Marea Weekend
Coil spring
Make sure that it is not cracked or deformed
such as to impair its efficiency.
IM O T E
Wishbone
Check that the wishbone is not deformed,
that there is no excessive play in the balljoint,
that the dust excluder is not damaged and
that the rubber bushes are not w o r n , otherwise the entire wishbone will have t o be replaced.
P4F013G01
1.
2.
3.
4.
5.
6.
7.
Shock absorber
Coil spring
Shock absorber top plate
Spacer
Top rubber ring supporting spring
End-of-travel tube and stop
Vertical link
8. Wishbone
9. Constant velocity joint w i t h stub
axle
10. Bearing circlip
1 1 . Ball bearing
12. Wheel hub
13. Nut securing wheel hub
14. Bottom rubber ring supporting
spring
13
Marea-Marea Weekend
Front suspension
4i
Staking w h e e l hub n u t
To stake the n u t proceed as follows:
- always use a new nut;
- thoroughly clean the threaded end of the
drive shaft using a metal brush and then
blow w i t h compressed air;
00,
1
UV
I"
P4F014G02
clean the thread of the new nut and threaded end of the drive shaft w i t h disposable
paper towel dampened w i t h ethyl alcohol
or heptane;
tighten the new nut to the specified torque;
stake the nut collar using the chisel shown
in Figure 1 (the chisel should be constructed on site, in accordance w i t h the dimensions showon on the drawing, obtaining it
from article USAG 362 or similar).
The collar must be cut on the hub notch on the side opposite that of tightening the nut, so that the safety
lug opposes accidental unscrewing (see Figure 2).
14
Service News
2/97
44
Fiat Marea
version all versions
4410 0 000 AA
03.97
FRONT S U S P E N S I O N
correction of the wheel hub fixing nut tightening value
given in the Service Manual
]fl
O P E R A T I O N S IN T H E NETWORK
As a correction to the information given on page 14 of section 44 of the. Service Manual, print no.
506.763, we wish to point out that the wheel hub fixing nut tightening figure is as follows:
- NUT M22
NUT M22
70 daNm + 55
NUT M24
NUT M24
70 daNm + 62
Please be so kind as to make a note, by hand, of the correct figure in the above mentioned publication
IF31B7
Marea-Marea Weekend
447
DIAGRAM O F REAR S U S P E N S I O N A S S E M B L Y
P4F015G01
1. Stabilizer bar
2. Trailing arm
3. Spring
4. Torsion bar
5. Shock absorber
15
Marea-Marea Weekend
Rear suspension
44.
REMOVING-REFITTING
NOTE
P4F016G01
Fuel t a n k
To remove the tank, proceed as follows:
1. remove the boot floor trim, undo the bolts
and remove the plastic access cover;
2. disconnect the t w o electrical connectors;
3. undo the nut and disconnect the vent pipe
(1) and, releasing the retaining lugs, disconnect the fuel delivery and return pipes
(2) ;
P4F016G02
P4F016G03
16
P4F016G04
Marea-Marea Weekend
44.
P4F017G02
4. disconnect the rear brake pipe attachments from the fuel tank;
17
Marea-Marea Weekend
Rear s u s p e n s i o n
44.
\\<^>ll
\
^^^^^^
18
Marea-Marea Weekend
44.
P4F019G05
P4F019G04
19
Marea-Marea Weekend
Rear s u s p e n s i o n
44.
20
Marea-Marea Weekend
44.
DISMANTLING-REASSEMBLY
attach-
Stabilizer bar
Check that the stabilizer bar is not worn or
deformed, otherwise it will have to be replaced.
Check that the mountings are not w o r n .
H
NOTE
21
Marea-Marea Weekend
Rear suspension
44.
To remove the shock absorber, compress the rear suspension with a hydraulic jack.
22
Marea-Marea Weekend
44.
S T U B A X L E - REAR W H E E L HUB
NOTE
Checking hub
If the wheel bearing (arrowed) is replaced
because of excessive noise or play, the complete hub must also be replaced.
P4F023G04
23
Marea-Marea Weekend
Rear s u s p e n s i o n
44.
<f>
Checking trailing arm and stub axle
Make sure that the trailing arm is not cracked,
deformed or worn (on the surface on the
wheel side), otherwise it will have to be replaced.
If the bearings and spacer (arrowed) need to
be replaced because of excessive noise or
play, the trailing arm will also have to be replaced.
The stub axle must not be cracked, deformed
or w o r n , otherwise it will have to be replaced.
<i>
24
Publication no.
506.763
Marea-Marea Weekend
44.
15 daIMm
6 daNm
B
8.8 d a N m
Refitting damper
Tightening to torque the top bolt (A) and
bottom bolt (B) securing the shock absorber
to the rear suspension assembly.
5.6 d a N m
25
Marea-Marea Weekend
Rear s u s p e n s i o n
44.
10.8 d a N m
28
bolts on bodywork
to
correct
daNm
brakes
26
geometry
Marea-Marea Weekend
44.
C O M P O N E N T S OF T H E REAR S U S P E N S I O N S U P P L I E D AS S P A R E PARTS
1. Rigid rear axle - 2. Hydraulic rubber buffer - 3. Shock absorber top bolt - 4. Coil spring - 5. Shock absorber - 6. Bottom bolt and nut securing shock absorber to trailing arm - 7. Cast iron trailing arm - 8. Stabilizer bar - 9. Nut and bolt securing trailing arm to rear axle - 10. Stub axle - 1 1 . Wheel hub - 12. Stub axle
and wheel hub nut -13. Hub cap - 14. Rubber buffer
Wheel hub
If the wheel bearing has to be replaced because
of excessive noise or play, the hub complete
with bearing will have to be replaced.
Stub axle
The stub axle must not be cracked, deformed or
worn, otherwise it will have to be replaced.
Shock absorber
If faults are found in the shock absorber, the latter
should always be replaced completely.
Coil spring
Make sure that it is not cracked or deformed such as to impair its efficiency.
NOTE
The coil springs are distinguished into two categories identified by a yellow or green paint
on the central coil. Springs of the same category must be fitted.
mark
27
Marea-Marea Weekend
Wheel geometry
44.
FRONT WHEEL GEOMETRY
The wheel geometry must be checked after the components w h i c h affect the wheel geometry have been
subjected to the following checks:
- tyre pressure;
- the eccentricity and out of true of the wheel rims must not exceed 3 mm;
- wheel bearing endfloat;
- play between vertical link and wishbone balljoint;
- play on tie rod end.
P4F028G01
TOE-IN
C A M B E R (not adjustable)
C A S T E R (not adjustable)
If, when checking the toe-in, different values from those specified are
measured, adjust the tie rods after
slackening the nuts.
If the camber angle is different from the specified angle,
the body shell will have to
be checked.
Whenever checking the front wheel toe-in, closely follow the instructions
below:
- slacken the clips securing the gaiters on the tie rods;
- check that the gaiter turns freely on the tie rod; if necessary remove the gaiter and lubricate
with MOLYGUARD
SYL 133 silicone grease or a similar product;
- tighten the clip after adjusting the toe-in, and only after checking that the gaiter is in the correct position.
28
Marea-Marea Weekend
44.
REAR W H E E L G E O M E T E R Y
The wheel geometry must be checked after the following checks have been carried out:
- tyre pressures;
- the eccentricity and out-of-true of the wheel rims must not exceed 3 mm;
- wheel bearing endfloat.
T O E - I N (not adjustable)
C A M B E R (not adjustable)
If the rear wheel angles are incorrect they cannot be adjusted as the rear suspension comprises a rigid axle.
29
Preface
Marea-Marea Weekend
This manual contains the main instructions concerning the repair and maintenance of the Fiat Marea
and Fiat Marea Weekend.
The manual is divided into sections distinguished by t w o - d i g i t numbers which correspond to the spare
parts microfiches and the repair time schedule.
The INTRODUCTION AND T E C H N I C A L DATA (00.) Section has the dual function of presenting the
model and supporting the rest of the manual. This Section comprises technical data tables and specific
information relating to the other sections in the manual.
The remaining sections (10. - 1 8 . ecc.) contain descriptions relating to the intervention procedures.
In this manual, graphic representations and symbols are used instead of descriptions of mechanical
parts, operations or methods of intervention.
Con rod small end diameter
Example:
Big end bearing seat
ENGINES
Tighten to torque
Section 10 describes the operations for the removal and refitting of the engines,
tions on the car and the fuel system, lubricating system and cooling system.
The overhaul procedures for the individual
lowing publication
numbers:
Engine
Publication no.
Order no.
137012V
504.589/19
604.89.774
1581 16V
504.589/20
604.89.781
1747 16V
504.589/18
604.89.192
1998 20V
504.589/22
604.89.795
1910 T D
504.593/13
604.44.220
2387 T D
504.593/14
604.44.311
GEARBOXES
opera-
while
am innludRd
Section 21-27 describes the operations lor the removal and refitting of the
various gearboxes. The procedures foi the bench overhaul of the vaiiuus
mechanical gearboxes are published in separate sections with the
following
publication
numbeis505.023-08
Included
505.023.
505.023;
Included
Included
03
18
Manual
volume
T H I S P U B L I C A T I O N IS L O O S E - L E A F SO THAT M O D E L U P D A T E S CAN BE A D D E D .
When using chemical products, closely follow the accident prevention instructions on the safety leaflet which the supplier must give to the user (in Italy in accordance with DM. no.
46/1992)
Foreword
Marea-Marea Weekend
The F i a t M a r e a is a 5-door saloon with monocoque body, transverse-mounted engine and front-wheel
drive.
It is made with different engines.
The engines are w i t h 4 or 5 cylinders in line,clockwise rotation, and positioned transversally at the front.
The following engines are fitted, depending on the version:
1370 c m
four cylinders in line, 12 valves, running on unleaded petrol and delivering a power of 59 kW
(80 bhp) at 6000 rpm.
1581 c m
four cylinders in line, 16 valves, running on unleaded petrol and delivering a power of 76 kW
(103 bhp) at 5700 rpm.
1747 c m
four cylinders in line, 16 valves, running on unleaded petrol and delivering a power of 83 k W
(113 bhp) at 5800 rpm.
1998 c m
five cylinders in line, 20 valves, running on unleaded petrol and delivering a power of 108
kW (147 bhp) at 6100 rpm.
1910TD c m
four cylinders in line, 8 indirect injection valves, running on diesel and delivering a power
of 55 kW (75 bhp) at 4200 rpm.
1910TD c m
four cylinders in line, 8 indirect injection valves, rurtning on diesel and delivering a power
of 74 kW (100 bhp) at 4200 rpm.
2387 T D c m
five cylinders in line, 20 indirect injection valves, running on diesel and delivering a p o w er of 91 kW (124 bhp) at 4000 rpm.
II
Marea-Marea Weekend
Remove
Disconnect
1-5]
Refit
Connect
Inlet
Exhaust
P H
L J
Dismantling
Disassembly
Operation
HM
E^fl
Fitting
Reassembly
Tolerance
Weight difference
Tighten to torque
Preload
Tighten to torque
plus angle
Rotation
Fully tighten
Compression
ratio
Selection
Classes
Stake nut
EHfl nA
yyjH ^
Adjustment
Regulation
>
Visual check
Check
if"*
Oversized
O'sized to
Maximum
<
Undersized
U'sized to ..
Idling
Rpm
Warning
Ratio
Lubricate
Damp
Pressure
an^n
Replacement
Original parts
Temperature
Bleed the
braking system
n^fl
^ 3
Fiat Auto
Cold
Winter
Surface to be machined
After machining
Temperature > 0 C
Hot
Summer
Interference
Force fit
Windscreen wiper
with pump
washer fluid
Dimension to be measured
Measurement - Check
Thickness - Clearance
Rear w i n d o w wiper
with pump
washer fluid
Rolling torque
Copyright
Temperature < 0 C
Mi
Engine
III
Marea-Marea Weekend
Safety instructions
This manual describes the maintenance operations and normal working procedures carried out in the
workshop.
It contains the specific W A R N I N G S A N D S A F E T Y I N S T R U C T I O N S t o be carried out to ensure the
safety of the vehicle and that its safety characteristics are maintained, and especially to ensure that operators work safety with no personal risks.
The warnings given are the most important and significant. However, they cannot cover all the risks associated with the operating methods w i t h w h i c h repair interventions can be carried out and the relevant
possible consequences.
A n y person wishing to carry out maintenance procedures and using tools recommended by Fiat A u t o
must nevertheless make sure that the safety of persons and the vehicle is not put in jeopardy.
I N EACH COUNTRY, HOWEVER, IT IS NECESSARY TO OBSERVE THE CURRENT SAFETY I N STRUCTIONS CONCERNING WORKSHOPS.
A L W A Y S REFER TO THE SPECIAL SIGNS DISPLAYED IN THE WORKSHOP.
The words W A R N I NG and A T T E N T I O N indicate the procedures to be followed w i t h particular care to
prevent accidents to staff or damage to the car's components:
A T T E N T I O N : used when insufficient care could cause damage to the vehicle or parts of it.
G E N E R A L WARNINGS
All the operations must be carried out w i t h the maximum attention and care to avoid damage to
the vehicle and persons.
The use of special tools is indicated for some procedures. These tools are essential for w o r k ing safely and to avoid causing damage to the parts involved in the procedure.
If necessary, mark all electrical wires and pipes to avoid reconnection errors.
s To detach parts w h i c h are stuck to each other, use an aluminium or lead hammer for ferrous
materials, and a wooden or resin hammer for light alloy parts.
Protect adequately w i t h adhesive tape or rags all parts of the engine w h i c h , left uncovered
after diSm^mltngTlJresent w i t r y passages for dust or foreign bodies.
Safety instructions
Marea-Marea Weekend
During refitting, lubricate the parts, where necessary, to prevent seizure or stiffness during
the initial operating period.
When refitting, it is essential to observe the tightening torques and any other adjustment data.
When r e f i t t i n g , ^ is essential to reposition correctly and carefully wiring, piping and heat
shields.
During reassembly, replace seals, oil sealing rings, spring washers, safety plates, self-locking
nuts and all parts that may be damaged.
Assemblies or parts which are removed must be replaced using only ORIGINAL SPARE
PARTS: only in this w a y can the interchangeability and perfect operation of the various components be ensured.
Safety supports
If it is necessary t o r a i s e the v e h i c l e , use a suitable hydraulic jack which meets current requirements,
and position the specific safety supports on the support points indicated in this manual.
Ensure that the car CANNOT IN ANY way slide off the supports and fall while you are working.
Make sure that the jacks and safety supports have been fitted correctly.
Apply the handbrake and lock the rear wheels to prevent the car sliding off the safety supports.
If necessary remove t h e engine, gearbox and other heavy units, and check that the lifting hooks have
been fitted correctly. Do not go under raised components.
Protection of fittings
Remove or cover the interior fittings of the car (upholstery, instruments, carpets).
Cover glass, instruments, upholstery and carpets with heat-resistant materials before undertaking
welding operations.
VI
Marea-Marea Weekend
Safety instructions
P R O T E C T I N G THE ENVIRONMENT
NEVER discharge the liquids contained in the vehicle (engine oil, gearbox oil, brake fluid, etc.) in the
sewerage network or other environments, but comply with current regulations concerning correct
disposal.
DO NOT discharge refrigerant from the air conditioning system into the open air, as it could be dangerous to the environment. Use only the special equipment to drain the system.
Do not abandon batteries or other components containing chemicals in the environment; instead
scrap them correctly.
Chemicals: regarding the use of chemicals, closely follow the legislation in each country.
O P E R A T I O N S IN THE E N G I N E C O M P A R T M E N T
The engine compartment contains several moving parts, parts at high temperature and high-voltage
cables which could be dangerous.
Do
Do
Do
Do
not
not
not
not
Engine oil
Do not dispose of oil in the sewereage network or other environments, but conform to current regulations concerning correct disposal of waste oil.
Engine oil is harmful to skin: reduce the contact of oil with the skin to a minimum; in the case of c o n tact wash w i t h soap and water.
Coolant
When the engine is hot, the fluid in the cooling system is under pressure. To avoid leaks of boiling
coolant, do not open the cap until the engine is cold.
When pouring coolant, take care not to pour it on electrical or painted parts. If coolant is spilled, clean
it off immediately.
VII
Safety instructions
Marea-Marea Weekend
Brake fluid
Avoid leakage of brake fluid on painted surfaces, as the paint could be damaged; if the fluid is accidntally spilled onto paint, remove immediately with water.
Before proceeding with refitting, make sure that dust and other impurities have been cleaned off all
the parts.
Some versions are fitted with a safety system comprising an AIR BAG cushion located on the
steering wheel and another on the passenger's side of the dashboard.
In addition, there may be seat belt pretensioners on the front seats.
WARNING
These devices contain a PYROTECHNIC CHARGE:
there are therefore particular provisions concerning their correct handling; these instructions are described in detail in this manual: see "Section 55 - Electrical system".
The maintenance, dismantling or replacement of these components requires particular care and the
use of specific methods and equipment, requiring the exclusive intervention of specially trained staff.
Particular attention should also be given to operations on compnents located NEAR the above-mentioned devices.
BODYWORK
Protective clothing
Make sure that the following are used, depending on the operations to be carried out:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Work cap
Ear defenders
Welding gloves
Gloves
Protective shoes
Protective visor
Boiler suit
Dust mask
Protective
goggles
P4F08PV01
VIII
Safety instructions
Marea-Marea Weekend
When welding
Make sure to disconnect the battery before starting any repair work.
If welding has to be carried out near the fuel tank, the fuel vapour separator or the fuel vapour filter,
remove the latter from their seatings.
Plug open pipe connections for fuel, fuel vapours and brake fluid pipes when the connections are disconnected.
Remove electronic control units before carrying out electric-arc welding on the vehicle.
Working environment
The environment must be well ventilated and lit, to ensure the safety of operators.
As paints and sealants, if heated, can emit toxic gases, use a saw or pneumatic chisel in preference to an
oxyacetylene torch for cutting and removing damaged metal panels.
To remove paint from the metal panels, use a band sander or rotary brush.
Flammable materials
Before using these materials, make sure that you have disconnected the battery.
NO
P4F09PV01
IX
Safety instructions
Marea-Marea Weekend
AIR CONDITIONER
The coolant w h i c h accidentally leaks out of the air conditioning system or the emptying/filling device
may become toxic if it is very close to naked flames or in the presence of certain metals (for example
magnesium or aluminium) in the form of fine particles or powder. It is therefore appropriate to work
in the absence of naked flames and in ventilated environments with the extraction system
switched on.
Avoid prolonged contact w i t h the skin of fluid at the evaporation stage as the low temperature (approx. -25 C) can cause "scalding" because of excessive cold. It is therefore appropriate to use
leather or thick fabric gloves.
It is also essential to protect the eyes from contact with fluid at low temperature. Always wear protective goggles.
To empty the system, only use the equipment indicated in the manual.
P4F10PV01
The fluid is stored under pressure in metal cylinders; neverexpose the cylinders to sun rays for prolonged periods: the increase in temperature increases the pressure, which could exceed the safety
limit. Never leave the charging station cylinder completely fall for prolonged periods. Never overturn
the cylinder during pouring.
Safety instructions
Marea-Marea Weekend
ELECTRICAL SYSTEM
Before undertaking any activity to electrical components, adopt and closely follow the precautions below:
Disconnect the battery whenever wiring has to be removed or when delicate operations have to be
carried out on the electrical system.
Do not fast charge the battery, except after disconnecting the earth cable, so as not to damage the alternator diodes.
Never try to turn the engine w i t h the battery's earth cable loose, in order not to cause serious damage
to the wiring.
When working on the car's electrical system, never pull wires or wiring using force, as the wires could
be inadvertently disconnected from the connectors or terminals.
Disconnect all the control units and electronic devices when carrying out arc welding on the body
shell.
When replacing fuses, make sure that the new fuse is of the correct rating. Do not use fuses of a higher or lower rating.
BE CAREFUL: FIRES:
do not smoke when working near the battery or c o m p o nents w h i c h heat up during use (e.g. halogen bulbs), or i n side the engine compartment w h e n the engine is still hot.
ALSO take the utmost care to avoid burns or damage to
tools or components.
XI
Safety instructions
Marea-Marea Weekend
SYMBOLS
PLATES are fitted to some components of the vehicle w i t h appropriate symbols for drawing the operators' attention t o certain precautions or behaviour w h i c h is recommended or even required mandatorily.
The following table gives these plates w i t h the component concerned and the meaning of the symbol:
DANGERS:
SYMBOL
- \
/mim*\
COMPONENT
Battery
MEANING
Corrosive liquid
P4FI2PV01
Battery
P4F12PV02
Battery
Explosion
Electric fan
Coolant
reservoir
Ignition coil
High voltage
P4F12PV03
A
P 4F12PV04
A
P 4F12PV05
A
P *F12PV06
/^\
P 1F12PV07
A
P
XII
Marea-Marea Weekend
Safety instructions
NOT PERMITTED:
SYMBOL
COMPONENT
MEANING
Battery
Heat shields
Belts - Pulleys
Electric fans
P4F13PV01
P4F13PV02
P4F13PV03
WARNINGS:
SYMBOL
COMPONENT
Engine oil
MEANING
p IF13PV04
Power steering
p F13PV06
Brake fluid
p JF13PV08
JUL
Catalytic converter
p JF13PV07
Windscreen wiper
p JF13PV08
XIII
Summary
Marea-Marea Weekend
Sections
50
506.763/01
With binder
55
(VI/1996)
Page
Nos.
1 - 74
Comments
Heater - Air conditioning
1-183
Electrical equipment
1-141
1 - 59
1-113
70
1 + 88
50
55
Bodywork - Removing-refitting
Auxiliary units
34
Electrical equipment
34
Wiring diagrams
51
Connector blocks
506.763/02
(VIII/1996)
Pre-tensioners
TAXI version
Wiring diagrams
Climate control
70
506.763/03
(1/1997)
55
50
55
14
Alarm
506.763/05
2
Wiring diagram
70
10
70
Marengo - Bodywork
00
14
10
71
(IV/1997)
506.763/06
(IX/1997)
Cont' cr
Summary
Print N
506.763/07
(IX/1997)
506.763/08
(IV/1998)
Marea-Marea Weekend
Sections
Page
Nos.
Comments
50
Climate control
55
18
55
Wiring diagrams
70
Bodywork - seats
10
Marea bipower
119-132
Update: Alarm
133 - 136
139 - 144
147 - 1 50
55
55
1 - 2
Summary
Marea-Marea Weekend
Publication no.
Sections
50
506.763/01
With binder
55
(VI/1996)
Number of
pages
1 - 74
Notes
Heater - Air conditioner
1-183
Electrical system
1 - 141
1 - 59
1 - 113
70
1 - 88
Bodywork - Removing/refitting
Auxiliary units
Marea-Marea Weekend
Contents
50.
page
page
HEATING/VENTILATION
- Foreword
- Thermostatically-controlled air conditioner/heater
- Operating system
- Controls
- Connection to motor control ECU
- System components
,
- Automatic diagnosis
- Shroud/distributor unit
- Thermostatically-controlled air conditioner/
heater wiring diagram
- Heater with.manual controls
/
COMPRESSOR
- Compresso'r
- Operation
1
1
2
3
4
6
11
13
16
18
THERMOSTATICALLY-CONTROLLED
CONDITIONER
21
22
AIR
57
58
60
61
61
62
63
63
63
63
64
- Heater radiator
- Passenger compartment ventilation fan
- Interior ventilation fan electronic speed
regulator
- Electronic control unit
- Variable flow compressor specifications
- Air conditioning system specifications
- Setting radiator and condenser thermal
activation switch
- Specifications of extra resistor with fuse
for radiator and condenser fans
29
30
31
32
34
34
35
37
40
41
44
45
54
55
55
55
56
56
56
56
65
73
Marea-Marea Weekend
Auxiliary units
Heating/ventilation
50.
FOREWORD
The air in the vehicle passenger compartment may be treated by means of one of the f o l l o w i n g systems:
- THERMOSTATICALLY-CONTROLLED AIR CONDITIONER
- THERMOSTATICALLY-CONTROLLED HEATER
- HEATER WITH M A N U A L CONTROLS
The first t w o systems are described jointly, because the heater differs from the air conditioner only in
lacking an air cooling circuit: the entire system is controlled by the same electronic control unit. The
control unit recognises the presence or absence of a cooling circuit by detecting the existence of the air
conditioner activation key on the control panel in the air conditioned version
T H E R M O S T A T I C A L L Y C O N T R O L L E D AIR C O N D I T I O N E R / H E A T E R
The thermostatically-controlled system controls the vehicle air conditioning system S E M I - A U T O M A T I CALLY:
The following are controlled automatically on the basis of the passenger compartment temperature requirement:
- air temperature to outlets
- fan speed ( continuous variation);
The following are controlled manually:
-
Air distribution to the various ventilation outlets is controlled fully automatically (via bowden cables).
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
SYSTEM OPERATION
A special electronic control unit manages automatic system operation by controlling thermodynamic
parameters in order to ensure the climatic conditions (temperature and humidity) requested by the car
occupants.
P4F02AH01
According to the requests received and the temperature conditions measured, the control unit alters certain settings to adjust the passenger compartment temperature to required levels.
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
CONTROLS
5
P4F03AH01
The left hand knob (1) is used to select the REQUI RED TEMPERATURE (between 18 and 30 C): this is
connected to a potentiometer which records the various angular positions and then transmits a signal to
the electronic control unit corresponding to one of a total of 15 different positions (one for each degree
centrigrade). The t w o extreme positions " L O " and " H I " correspond to maximum cooling and maximum
heat respectively.
The central knob (2) controls AIR VENTILATION : this is also connected to a potentiometer w h i c h
records the various angular positions and sends a signal to the electronic control unit. Four possible
fixed air flows may be set manually ( 1 , 2, 3 and 4 ) , while the system itself automatically sets the most
appropriate air flow for reaching or maintaining the required temperature if "AUTO" is selected.
NOTE
Position "0" indicates minimum ventilation: the fan is off, and only a slight air flow
emerges
from the outlets.
With the compressor activated, the fan by-passes to the first speed, even if the knob is on "0".
NOTE
Two different maps inside the control unit correlate air flow and fan speed: a pollen filter on the
exterior air intake reduces the flow - at the same fan speed - with the "dynamic air"setting
compared to the "recirculation"
setting.
The right hand knob (3) selects one of five air FLOW DISTRIBUTION patterns: this selection is carried
out manually by means of a cable w h i c h controls distribution flap movement.
When key (4) is pressed, COMPRESSOR operation is enabled (air cooling circuit). Operation is de-activated when the key is released. Activation is entirely manual: the compressor is enabled even w i t h the
key released only if " M A X DEF" mode is selected.
NOTE
ON THE "HEATER"
VERSION
When key (5) is pressed, it activates the AIR RECIRCULATION function within the passenger compartment. "Dynamic" air flows in from outside when the key is released.
Activation is entirely manual: the recirculation function is de-activated even w i t h the key released only if
" M A X DEF" mode is selected.
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
"MAX-DEF" function"
When the distribution knob is turned fully
clockwise, the quick demisting " M A X DEF"
FUNCTION is activated via a microswitch.
This brings about:
- maximum air flow
- mixing with maximum available heat
- recirculation de-activated, regardless of the
position of ke\^f5).
- compressor enabled regardless of the position if key (4)
- heated rear w i n d o w request s i g n a l : activation is controlled by the integrated service
control unit (see Group 55)
P4F04AH01
air con-
Note that the compressor may be deactivated only by the three-stage pressure switch or the engine control ECU. This system is dependent upon the various engine rnanagement ECUs as detailed below:
CONNECTION TO MOTOR CONTROL E C U
The air conditioning system electronic control unit sends a control signal to the engine control ECU to
enable compressor activation.
Three different connection types are present according to the engine control unit types
A: 1998 engine
B: 1581 - 1747 - 1910TD - 2387TD engines
C: 1370 engine
NOTE
For the 1910 TD-75 version, without an engine management ECU, compressor operation is enabled by the three-stage pressure switch, a thermal switch and the EGR control unit.
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
E x a m p l e A : engine management control unit
(1) receives compressor activation request
signal (a) directly from control switch ( 2 ) :
the same signal is also received as enablement (b) after f l o w i n g through the air c o n d i tioner control unit (3) and three-stage pressure switch ( 4 ) . If the cooling circuit pressures are incorrect, this signal is interrupted.
Lastly, control unit (1) sends command (c)
to activate compressor (6) via relay (5) provided no other exclusion conditions are present (e.g. maximum power demand, idling
etc.).
P4F05AH02
86 85 30 8787
t
30__,15
a
E4 2
(4)
JSL
1.
2.
3.
4.
5.
6.
Injection
ECU
Air conditioner
controls
Heating/ventilation
control unit
Three stage pressure
switch
Compressor
relay
Compressor
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
SYSTEM COMPONENTS
Electronic control unit
The electronic control unit manages automatic system operation by controlling thermodynamic parameters in order to provide the conditions of climatic comfort (temperature and humidity) required by the
vehicle occupants.
It is bolted to the lower part of the shroud-distributor unit by means of t w o bolts and is easily accessible
from the passenger compartment. A connector f o r ^ T i a t / L a n c i a Tester is located next to it.
I3T4I5161
o)
ri3l14l15l16l17H8|19|20|
191101111121
TERMINAL
FUNCTION
TERMINAL
FUNCTION
" M A X DEF"
15
16
N.C.
17
18
Fan potentiometer
Temperature request potentiometer
19
20
Fan cphtfoj
21
Fan earth
Recirculation activation
22
Tester line K
Tester line L
23
Mixer control ( M l ) - 5V -
9
10
24
25
11
12
26
Recirculation
control - 5V -
13
27
14
28
Rear w i n d o w
activation
Marea-Marea Weekend
Auxiliary units
Heating/ventilation
50.
Outside air temperature sensor
This is located on the right door mirror.
Copyright
Fiat Auto
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
Air flow request potentiometer
This potentiometer is connected to the air
ventilation knob and records the various angular positions. It then sends a signal to the
electronic control unit: four fixed manual air
flow settings are available (1, 2, 3 and 4 ) ,
plus "AUTO" position and "0".
It is supplied from the control unit with 5V
and controlled earth, and returns a signal corresponding to the knob position:
R7-R7=
R2 R3 R4 RS R6 R7
1500Ohm1%
(+)
(-)
ing Icircuit)
When the key is pressed, compressor operation is enabled (air cooling circuit)
Pasenger compartment temperature sensor
*
Terminal
sen-
FUNCTION
Terminal
Compressor control
+15
10
Symbol illumination ( + )
MAX-DEF
11
N.C.
12
Recirculation control
Marea-Marea Weekend
Auxiliary units
Heating/ventilation
50.
MAX D E F function switch
A special switch activates the M A X DEF
function: this is located on the distribution
knob: this N.A. contact is closed w h e n the
knob is turned fully clockwise.
heat
Copyright
Fiat Auto
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
Defrosting sensor
The defrosting sensor is located inside the
shroud-distributor unit, fitted directly on the
evaporator. It records the temperature and
communicates it to the control unit w h i c h
takes any necessary measures to prevent
freezing when the compressor is deactivated:
This NTC sensor ( R at 25C = 10 kOhm), has
an operating range from -5C to +25C.
P4F10AH01
7.
2.
electric fan
electronic regulator
30^15
ao(GND) 21-
1 -i
m
Wiring diagram
10
A electric fan
B electronic regulator
C electronic control unit
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
AUTOMATIC DIAGNOSIS
The electronic control unit is able to record and save a series of anomalies and faults w h i c h could affect
the system by means of sensor control software and self-adapting actuators
If such anomalies arise, the control unit continues to manage system operation by replacing any anomalous values w i t h recovery values w h i c h allow the system to operate at a minimal, albeit not optimal level.
T w o types of errors are saved:
- occasional errors, w h i c h are reset w h e n the igntion key is turned to STOP
- "permanent" errors: if an error occurs more than 5 times in a given time period, it is considered permanent and saved inside the control unit: these errors are NOT reset w h e n key is turned to STOP but only
upon a specific external command (Tester).
The control unit allows saved errors t o be read in t w o ways:
- via a FIAT LANCIA TESTER or other type of tester
- via the control panel display when enabled to read external temperature.
When a control unit error arises (even if only occasional), the wording "Error Cli" appears on the control
panel. This indicates an anomaly.
If this wording remains when the "outdoor temperature" key on the middle of the facia is pressed, then
the error concerns the outdoor temperature sensor. If the correct temperature value appears, the error relates to other system components. It is the possible to identify the saved anomaly by means of the f o l lowing procedure:
11
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
Now the control unit sends a series of messages to the control panel: one of the error codes shown in the
following table is displayed in the place of "CM".
POSSIBLE FAULTS
CODE ON DISPLAY
12
14
32
34
42
44
52
54
65
82
84
92
94
B2
B4
D5
E2
E3
12
Publication
no.
506.763/01
Marea-Marea Weekend
Auxiliary units
Heating/ventilation
50.
S H R O U D / D I S T R I B U T O R UNIT
The assembly shown in cross section in the figure below is the main component of the system. It essentially consists of a shroud (1) and a heater-distributor assembly (2).
Shroud (1) is made up of an upper and a lower part. The right hand side of the upper part is profiled in
order to match the right hand upper part of the dashboard surface (area beneath the windscreen glass of
bulkhead between engine bay and passenger compartment), w i t h w h i c h it is in contact.
T w o rectangular openings are made in the upper part of the right hand side of the shroud. The first is
practically horizontal and matches the opening on the dashboard through w h i c h it communicates w i t h
the outside. The other faces the passenger in almost vertical position and allows air in the passenger
compartment to enter.
The upper inside part of the shroud is fitted w i t h flap (3) w h i c h can be adjusted by means of a cursor
and cable to take up any intermediate position between the limit closure positions of one of the above
t w o openings.
Fan (4) is press-fitted inside the shroud to the lower part near the above opening. This can be supplied
at different voltages to run at different speeds.
The heater - distributor unit essentially consists of a box which houess the following components in order:
- in the centre, a mixer flap which is adjusted by a knob through a cable. This allows all the air taken in
by fan (4) or a proportion of the air to f l o w over the finned surface of the heater radiator ( 5 ) ;
- heater radiator (5) at the bottom centre, whose inlet and outlet fittings emerge from the right side surface of the above unit.
- four flaps at the t o p and side w h i c h can be adjusted by a knob through a cable, a toothed sector, a
grooved disc acting as a distributor in order to close off (partly or completely), the cross section of i n ternal shrouds w h i c h convey air to the rear footwells, front outlets and windscreen demister diffusers.
P4F13AH01
Evaporator (6) is located between shroud (1) and distributor (2) ONLY FOR THE AIR CONDITIONED
VERSION
Copyright
Fiat Auto
13
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
Dynamic / recirculation air
An actuator turns the air intake flap (P) between the t w o extreme positions: in figure A, the inner air intake is closed and the fan takes in only outside air. Outside air is prevented from entering and only recirculated air is taken in if the flap is turned to the position in figure B.
14
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
Air distribution
When the right hand knob is turned clockwise, the four distribution flaps also turn in
order to distribute the air as s h o w n in the various symbols i.e. ranging from only front outlets to only windscreen outlets as s h o w n in
the figures below.
Detail showing the position of the various distribution flaps w h e n the knob
is turned fully anticlockwise
Detail showing the position of the various distribution flaps when the knob
is turned fully c l o c k w i s e
15
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
WIRING DIAGRAM O F T H E R M O S T A T I C A L L Y - C O N T R O L L E D
AIR C O N D I T I O N E R / H E A T E R (*)
OO
IT)
OJ
^1OJ
OJ
OJ
1 3
00
ID
OJ
cu
yy
OJ
m
OJ
o
OJ
OJ
cr.
CD
OJ
in
in
in
OJ
CD
OJ
OJ
3-
in
OJ
CO
OJ
CD
OJ
CO
OJ
CD
OJ
E-CV08>3GQIHEJJ
IT1f-^IHF|
5 s
UJ
\oi /
o
/IN
16
Marea-Marea Weekend
Auxiliary units
Heating/ventilation
50.
Key to components
3
4
6
68
121
202
206
207
209
211
244
249
253
254
255
256
258
259
260
17
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
HEATER W I T H M A N U A L CONTROLS
The assembly shown in cross section in the figure below is the main component of the system. It essentially consists of a shroud (1) and a heater-distributor assembly (2).
Shroud (1) is made up of an upper and a lower part. The right hand side of the upper part is profiled in
order to match the right hand upper part of the dashboard surface (area beneath the windscreen glass of
bulkhead between engine bay and passenger compartment), w i t h which it is in contact.
Two rectangular openings are made in the upper part of the right hand side of the shroud. The first is
practic'ally horizontal and match.es the opening on the dashboard through w h i c h it communicates w i t h
the outside. The other faces the passenger in almost vertical position and allows air in the passenger
compartment to enter.
The upper inside part of the shroud is fitted w i t h flap (3) w h i c h can be adjusted by means of a cursor
and cable to take up any intermediate position between the limit closure positions of one of the above
two openings.
Fan (4) is press-fitted inside the shroud to the lower part near the above opening. This can be supplied
at different voltages to run at four different speeds.
The heater - distributor unit essentially consists of a box which houses the following components in order:
- in the centre, a mixer flap which is adjusted by a knob through a cable. This allows all the air taken in
by fan (4) or a proportion of the air to f l o w over the finned surface of the heater radiator ( 5 ) ;
- heater radiator (5) at the bottom centre, whose inlet and outlet fittings emerge from the right side surface of the above unit.
*
P4F018H01
18
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
- four flaps at the top and side which can be adjusted by a knob through a cable, a toothed sector, a
grooved disc acting as a distributor in order to close off (partly or completely), the cross section of i n ternal shrouds which convey air to the rear footwells, front outlets and windscreen demister diffusers.
The system controls essentially consist of three
knobs and a cursor.
When the LEFT HAND KNOB is turned, mixer
flap ( M ) (figure overleaf) turns from its initial
position (figure 1) to its limit position (figure
2).
In this system, when mixer flap ( M ) is in the
position s h o w n in figure 1, the air f l o w taken
up by the fan is distributed to the various outlets w i t h o u t undergoing any temperature
change because the finned surface of the
heater radiator is not struck by the air f l o w .
P4FO19H01
When the mixer flap takes up the limit position shown in figure 2, the entire air flow taken up by the fan
is forced to hit the heater radiator fins. Warm air at the maximum possible temperature is therefore distributed to the different outlets.
When the mixer flap takes up an intermediate position between the above t w o positions, only part of the
air f l o w taken in by the fan flows over the radiator fins. It therefore mixes with the residual f l o w before
being distributed to the various outlets. The temperature of the air leaving these outlets is directly proportional to the size of the f l o w striking the radiator. This f l o w increases as mixer flap position approaches the position shown in figure 2.
When the central knob is turned clockwise, passenger compartment fan runs at increasing speed and the
volume of air taken in and distributed t o the various outlets also increases.
When the RIGHT HAND KNOB is turned clockwise, the four distribution flaps also turn in order t o distribute the air as shown in the various symbols i.e. ranging from only front outlets to only windscreen
outlets.
A cursor beneath the central knob positions the air intake flap as required.
If the cursor is moved fully t o the left, air intake flap (P) is almost vertical (figure A ) and closes the interior air intake so that the fan takes in only outside air. Outside air is inhibited and recirculation air is taken
in if the cursor is moved fully to the right (figure B).
Copyright
Fiat
Auto
19
Auxiliary units
Marea-Marea Weekend
Heating/ventilation
50.
20
Marea-Marea Weekend
Auxiliary units
Compressor
50.
COMPRESSOR
The NIPPODENSO TV 12 SC compressor fitted to all versions is vane type and equipped w i t h a pressure
regulator that adjusts f l o w when evaporator temperature reaches values when freezing could occur. This
situation is indicated by a drop in compressor intake pressure.
The compressor essentially consists of case (1), which contains chamber (2). Four vanes (3) turning i n side the chamber are driven by hub ( 4 ) , whose axis of rotation does not coincide w i t h the theoretical
chamber centre line. The geometrical configuration of the chamber ensures that the rotating vanes are
always in contact w i t h the inside surface of the chamber. The assembly thus allows the space between
one vane and the next to be altered during rotation.
Two covers are secured to case ( 1 ) , one at the front (5) and one at the rear ( 6 ) . These contain an inlet or
low pressure chamber (7) and a high pressure chamber (8). Gas is taken in through intake (10) on cover
(5) and passes through low pressure chamber (7) and slot (11) on case ( 1 ) .
21
Auxiliary units
Marea-Marea Weekend
Compressor
50.
P4F022H02
OPERATION
1. Gas is taken in through slot (D) and then expands in compartment ( C ) , which is delimited by vanes (A) and ( B ) .
2. The new position of vanes (A) and (B) e n sures that compartment (C) is at maximum
volume. In particular, vane (A) cuts off c o m munication between compartment (C) and
slot (D) to complete the intake stage.
3. Compartment (C) reduces in volume and gas
pressure increases: the compression stage
thus begins.
4. Gas pressure increases further until strip
valve (E) opens: at this moment the c o m pression stage ends and the exhaust stage
begins.
5. When vanes (A) and (B) take up the position shown in the figure, the exhaust stage is
complete.
P4F022H04
22
P4F022H05
Marea-Marea Weekend
Auxiliary units
Compressor
50.
Flow control
Flow control is achieved via an electropneumatic mechanism built into the compressor. This by-passes
part of the gas in the compression stage to the intake, i.e. the low pressure chamber. When activated,
this system, a l l o w s c o m p r e s s o r output to be r e d u c e d to a b o u t 1 7 % o f t h e t o t a l w i t h t h e e n gine a t 1000/min.
The mechanism consists of a piston (A) that slides through cylinder (C) countered by spring ( B ) .
When the piston is positioned as shown in fig. A it blocks holes (D) that bring compartment (E; in which
gas compression begins) into communication with low pressure chamber (F). Viceversa, when piston
(C) is in the position in fig. B, holes (D) are in communication. The piston is operated by a small proportion of the gas under pressure, taken up by duct (I) that communicates with calibrated holes ( G ) .
The mechanism is governed by automatic pressure regulator (H), which intervenes according to pressure in compressor low pressure chamber (F). This pressure is directly proportional to evaporator outlet
fluid properties. High pressure in chamber (F) thus brings about high evaporator outlet temperature.
Low pressure brings about low temperature.
The pressure regulator consists
of a ball valve controlled by reference pressure (chamber F ) ,
countered by a spring. When
reference pressure is high, this
overcomes spring load and the
valve remains closed. Gas pressure acts on piston (A) to restore it to the position in figure
A.
Holes (D) are cut off and gas
compression begins in chamber (E) as described in the previous pages.
When reference pressure is too
low to overcome spring load,
ball valve opens (Fig. B) to allow gas under pressure in duct
(I) and cylinder (C) to flow into low pressure chamber (F) .
Piston (A) is therefore pushed
into rest position by spring (B)
to open up by-pass holes (D).
"-^rn
23
Auxiliary units
Marea-Marea Weekend
Compressor
50.
Lubrification
Lubrication oil (A) is contained in the high pressure chamber (B). When the compressor is working, the
high pressure in chamber (B) forces oil through calibrated hole (C) to the moving parts inside.
Oil mixed with gas (D) is expelled through strip valve (L) to the nigh pressure chamber.
A separator device (E) installed in gas outlet fitting (F) separates the gas from the oil that falls under the
force of gravity to the bottom of chamber (B) while the gas emerges from fitting (F).
This device minimises the amount of oil entering the system and thus increases thermal efficiently.
The compressor is also fitted with two safety valves (H) that discharge any excess pressure in compression chambers (I).
The valves open when the pressure difference between chamber (I) and chamber (B) exceeds 4 bar.
24
Auxiliary units
Marea-Marea Weekend
Compressor
50.
Pulley electromagnetic coupling
N OTE
Copyright
Fiat Auto
25
Auxiliary units
Marea-Maaea
Weekend
Compressor
50.
Use round-nosed pliers to remove pulley retaining ring (E) and take off pulley ( F ) .
26
Publication
no.
506.763/07
Auxiliary units
Marea-Marea Weekend
Compressor
50.
Remove ring
solenoid (I)
and
Refitting
A
Copyright
Fiat Auto
previously
27
Auxiliary units
Marea-Marea Weekend
Compressor
50.
Adjusting clutch clearance
Clearance between hub and pulley must be 0.5 0.15 mm.
Proceed as follows to check clutch clearance.
If the measurement obtained is not as specified, add or remove shims between hub and compressor
shaft.
For this purpose, shims are available in the f o l l o w i n g thicknesses: 0.10 - 0.30 - 0.50 mm.
E
28
After adjusting the clutch clearance, tighten the bolt retaining the assembly to the
shaft to a torque of: 10.8 - 16.2 Nm
Publication
compressor
no.
506.763/01
Marea-Marea Weekend
Auxiliary units
Thermostatically-controlled air conditioner
50.
HEATING/VENTILATION S Y S T E M
In addition to the unit described previously, the air conditioning system differs from the heating system
in the addition of various components specific to the air conditioning system, which are as follows:
- a variable output compressor (NIPPONDENSO TV 12SC - for all versions) fastened to the engine by
brackets;
- a heat exchanging condenser fitted in front of the engine cooling radiator;
- a dehydrating filter located near the left side of the condenser;
- an evaporator, which acts as the second system heat exchanger and is located in the above assembly;
- an expansion valve fitted to the evaporator intake duct;
- various rigid pipes and hoses connecting the various system components;
- three stage pressure switch fitted t o the dehydrating filter.
T w o tubes are welded to the high and low pressure pipes. A needle valve applied to these is used t o
charge and discharge the system.
1910 TD
2387 TD
Compressor
Condenser
Dehydrating filter
Evaporator
Expansion valve
Pipe between compressor and condenser
Pipe between condenser and dehydrating
filter
Copyright
Fiat Auto
8.
9.
10.
11.
29
Auxiliary units
Marea-Marea Weekend
50.
DRAINING AND R E C H A R G I N G THE S Y S T E M
Only use the appropriate Cleaner 134 device.
Drainging the system and recovering the coolant
Observe the SAFETY REGULATIONS given previously. In particular, take care to observe the following
precautions.
m Any R 134a fluid which accidentally emerges from the air conditioning
system or draining/recharging
device may become toxic if it comes too close to naked flames or comes into
contact with certain metals (e.g. magnesium or aluminium) in the form of fine or polyvalent
particles. It is therefore advisable to keep away from naked flames and work in a ventilated
are with the suction system active.
Avoid the R 134a fluid coming into extended contact with the skin while it is evaporating because the low temperature (-26.5C) at the end of the expansion stage may give rise to burns
due to the intense cold. It is advisable to use gloves made out of leather or thick cloth.
It is essential to protect the eyes from accidental contact with the coolant because
excessive
and instantaneous low tempature may lead to serious damage. Always use protective
goggles.
It is forbidden to discharge the fluid in the open air because this constitutes a danger to the
environment. When draining R134a from the system, use only the equipment
mentioned
above. Instructions are given below.
Recharging coolant
30
// used with due precautions, R 134a fluid is harmless for people and vehicles. Because it is
kept under pressure, it may undergo physical changes which could be damaging if not kept
properly under control. It is therefore necessary to observe the following precautions
with
great care.
The coolant is normally kept in metal canisters. Never expose the canisters to sunlight for a
long period. The temperature increase will increase the pressure and the safety limit may be
exceeded.
During the winter months, it will probably be difficult to decant the metal canister at the
charging station due to low pressure in the canister. In this case, before decanting,
position
the canister in a warm position at a temperature no greater than 35C without ever using a
naked flame to heat the canister.
Never leave the charging canister completely full for long periods. Never o verturn the canister
during
decanting.
Before charging the system, add the quantity of fluid removed during draining to the compressor (see next para.): use only the type and quantity of oil indicated in "TECHNICAL
DA TA".
Use only the proper equipment when recharging coolant R134a.
Consult the technical specifications
to be used for recharging.
given in "TECHNICAI
Publication
no.
506.763/01
Auxiliary units
Marea-Marea Weekend
50.
CONNECTING THE S Y S T E M TO CLEANER
134 D E V I C E
NOTE
Copyright
Fiat Auto
31
Auxiliary units
Marea-Marea Weekend
50.
TOPPING UP C O M P R E S S O R F L U I D L E V E L
^Tl
The compressor fluid level should be topped up only in the case of drainage/recharging,
or if
a significant amount of lubricant oil has-been lost due to damage to or disconnection of air
conditioning system
components.
The fluid is higly hygroscopic: avoid leaving containers open.
When working omthe engine bay, always plug system line holes. Never leave components
disconnected for longer than necessary.
// an accident causes the system to be exposed to the air for a period longer than six hours.
It is not sufficient to simpiy top up the fluid level. Instead the compressor lubricant fluid must
be changed completely as described
below:
To top up the fluid level, only use new fluid of the type indicated in the "TECHNICAL
DA TA "
section.
Replacing components
In the case of service operations which require replacement of certain system components, add the
r e c o m m e n d e d a m o u n t of fluid shown in the table for each part replaced.
If the c o m p r e s s o r is replaced, new parts are supplied containing the specified quantity of fluid. For this
reason, before fitting to the car, remove a quantity of fluid corresponding to the quantity left in the system. Proceed as indicated in the next point to do this
PART
Dehydrating filter
Piping
Q.TY
15 c m
5 cm /m
Evaporator
40 c m
Condenser
40 c m
Quick system drainage (less than 5 minutes) in the case of accidental failure
Under these circumstances, it is not possible to calculate the exact amount of fluid lost because high fluid pressures can cause fluid to be drawn out. Add in all c a s e s 50 c m of fluid.
3
32
Publication
no.
506.673/01
Marea-Marea Weekend
Auxiliary units
Thermostatically-controlled air conditioner
50.
Compressor replacement
New compressors are supplied pressurised with nitrogen to preventthe entry of moisture and
impurities. When fitting, it is therefore necessary to remove the input and output plugs slowly
and with the compressor positioned as shown in the figure below (with the cover facing uppermost).
Remove the oil separator device (A) fastened near the outlet fitting of the compressor to be replaced.
Pour the oil contained in the compressor into a graduated burette (C) taking care to drain the contents
well.
Remove the oil separator device (A) from the new compressor and pour the quantity of oil it contains
into graduatored burette ( D ) , taking care to drain the contents well.
Remove the excess oil quantity (E) corresponding to the difference between the quantity of oil c o n tained in the burette (C) and burette (D) ( E = D - C ) .
Copyright
Fiat Auto
33
Auxiliary units
Marea-Marea Weekend
50.
WASHING T H E S Y S T E M
- In the case of damage or breakage to the compressor or other system components, it is necessary to clean the system
thoroughly.
- During operations when the pipes are left open and exposed to the air for more than six
hours, it is necessary to wash the system to eliminate moisture.
Proceed as follows:
- If the compressor has suffered damage w h i c h may have led to the presence of metal parts in the pipes,
it is first necessary to clean the compressor connection pipes w i t h compressed air.
- Connect the system to the cleaner device mentioned previously.
- Add a quantity of R134a equal to the amount indicated for recharging (see "Technical Data") t o the
high pressure side - red cock.
- Then recover frm the low pressure side - blue cock.
- Add the same amount of R134a for the second time and recover as described previously.
- After washing, replace the dehydrating filter.
- Carry out the system drainage and recharging operations as described previously.
The radiator/condenser
cooling fan
comes on at a high pressure
circuit
pressure of 15-16 bar
P4F21AH01
S E R V I C E OPERATIONS
The procedures described for system components
sion and may vary slightly for other versions.
NOTE
34
Seal disconnected pipe ends with plugs and use only green o-rings
R 134a coolant if sealing rings require replacement.
Publication
no.
to
506.763/01
Auxiliary units
Marea-Marea Weekend
50.
COMPRESSOR
Removing
Before removal, position the vehicle
on a stand and then drain the air
conditioning
system
Copyright
Fiat Auto
35
Auxiliary units
Marea-Marea Weekend
50.
36
Auxiliary units
Marea-Marea Weekend
50.
CONDENSER
Removing
Before removing, arrange the vehicle on a lift, then drain the air conditioning system and the cooling system.
1. Unscrew the bolts indicated and remove
the air shroud.
2. Unscrew the screw indicated and release
line connecting compressor t o condenser.
3. Unscrew the screw indicated and remove
line connecting condenser t o dehydrating
filter.
Copyright
Fiat Auto
37
Auxiliary units
Marea-Marea Weekend
50.
Unscrew the screw indicated which connects top of condenser to engine coolant
radiator.
38
Publication
no.
506.763/01
Auxiliary units
50.
Copyright
Fiat Auto
39
Auxiliary units
Marea-Marea Weekend
50.
NOTE
40
To prevent the dehydrating filter absorbing too much moisture from the
environment, which could impair its
operation, it is advisable to leave no
more than 15 minutes from the time
of connecting to system to filter installation. If this is not possible,
seal
filter inlet and outlet lines or free
ends of connected hoses with watertight plugs.
Auxiliary units
Marea-Marea Weekend
50.
LINES CONNECTING HEATING/VENTILATION SYSTEM COMPONENTS
Before removing-refitting,
conditioning
system.
drain air
Copyright
Fiat Auto
41
Auxiliary units
Marea-Marea Weekend
50.
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Auxiliary units
Thermostatically-controlled air conditioner
50.
1. Unscrew the screws indicated in the figure and remove the battery mount.
2. Disconnect the connectors and loosen retaining clips shown in figure.
3. Unscrew the bolts indicated and removre
air duct.
4. Disconnect lines from retaining plate.
5. Unscrew screws retaining power steering
fluid reservoir to body and move out of the
way.
Copyright
Fiat Auto
43
Auxiliary units
Marea-Marea
Weekend
50.
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Auxiliary units
Marea-Marea Weekend
50.
SHR0UD/DISRIBUT0R
UNIT
Removing
Before removal, position the vehicle
on a stand and then drain the air
conditioning
system
and
engine
cooling system.
- Working from the engine bay, remove any
parts preventing access t o the central rear
part (See Group 10 - Removal and refitting
engines).
- Unscrew screw and disconnect fitting of
pipes leading to evaporator.
Seal the ends of the pipes
disconnected from the evaporator
with
sealing plugs to prevent
moisture
entering the system.
Loosen the t w o clips shown by disconecting the rubber pipes from the heater radiator metal fitting.
Working from inside the car, remove the facia trim and tunnel cover trim (see Group
70).
Disconnect the Airbag lead (coloured yellow) from the retainers and clips s h o w n .
Disconnect the other facia leads from the
shroud/distributor assembly.
Copyright
Fiat Auto
45
Auxiliary units
Marea-Marea Weekend
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Marea-Marea Weekend
Auxiliary units
Thermostatically-controlled air conditioner
50.
Copyright
Fiat Auto
47
Auxiliary units
Marea-Marea Weekend
Disassembly
Carry out the following operations:
- unscrew the screw indicated and remove the rear seat air fitting ( 1 ) ;
- unscrew the arrowed bolts, w h i c h retain heater guard ^ 2 ) and remove;
- unscrew the three bolts ( 3 ) . Take care not to lose the nuts fitted in the appropriate housings;
- remove plate (4) and disconnect the t w o metal pipes (5) from the heater radiator. Release pipes from
assembly;
- unscrew screw (6) and recover the heater radiator ( 7 ) ;
- remove protection (8);
- disconnect connectors (9 e 10) from the regulator ( 1 1 ) and electric fan (12) respectively;
- unscrew screw (13) and, after raising tab ( 1 4 ) , turn base of fan (12) anti-clockwise until it stops and
then remove from the assembly;
- unscrew the t w o bolts (15) and remove regulator (11) from the assembly
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Thermostatically-controlled air conditioner
50.
P4F049H01
- remove safety washer (1) and withdraw the eye at the end of the transmission cable (4) from pin of
lever (2). Withdraw cable from the assembly and release its sheath from the associated retaining clip
(3), after removing (moving to one side) the safety clip;
- disconnect electrical connections of control unit, arrowed in the figure
- move clip (5) retaining control mount (6) to one side from the rear of the control unit i order to remove from its housing on the heater distributor assembly:
- separate the control assembly with cable from the assembly;
- unscrew the three bolts (7), disconnect connection (8) and remove mixer actuator (9);
- disconnect electrical connection (10) of recirculation actuator (11);
- release rod (12) connected to actuator (11) from the arrowed clip, which retains it to air intake flap
positioning lever (13);
- unscrew the three screws (14) and remove actuator (11);
- disconnect the two connections (15) from control unit (16); withdraw the control unit, which is
mounted on a slide; disconnect any connections still connected and remove wiring (17) by disconnecting from the clip connecting it to the unit.
Copyright
Fiat
Auto
49
Auxiliary units
Marea-Marea Weekend
50.
Hi
NOTE
i-
50
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Auxiliary units
Marea-Marea Weekend
50.
P4F051H01
P4F051H02
P4F051H03
unscrew the six bolts indicated by arrows in the upper figure, which secure the lower case half to the
distributor heater assembly and separate.
n CO
PES
release the air intake flap (1) from the upper shroud case half. Note that the shaft is
press-fitted and connected w i t h tabs ( 2 ) ;
Fiat Auto
51
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50.
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Thermostatically-controlled air conditioner
50.
Assembly and refitting
Carry out the operations described and illustrated for dismantling and rebuilding in reverse order. Note the following points:
1. The sensitive element (2) of the defrosting
sensor must be located in the middle of
the finned evaporator surface. The clip (1)
must therefore be fitted in a suitable position to achieve this condition.
2. Before refitting the distributor disc, lubricate the lever operation splines using
TUTELA ZETA 2 grease
3. Position the various levers so that their
operating pivots (arrowed) are aligned
with the holes on the distributor disc
when the distributor is properly fitted on
the toothed sector (3), i.e. when the sector ridge is fitted into disc hole (A).
4. Before fitting the two metal pipes (6) into
the split heater radiator fitting, check that
tapered metal rings (5) are fitted into their
ends and that o-rings (4) are fitted into
the ring holes.
After ftting the pipes into the split heater
radiator fitting, secure by means of plate
(7) (positioned as shown in the figure).
Take care not to spoil the sealing rings.
Copyright
Fiat Auto
53
Auxiliary units
Marea-Marea Weekend
50.
H E A T E R RADIATOR
Removing
- Drain the engine cooling system;
- working from the lower rear part of the engine bay, loosen the t w o clips arrowed in
the figure alongside and disconnect the
t w o rubber pipes from the ends of the metal pipes protruding from the engine bay,
w h i c h are connected to the heater radiator
split fitting.
P4F054H02
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Auxiliary units
Marea-Marea Weekend
50.
PASSENGER
COMPARTMENT
VENTILATION FAN
Removing-refitting
Working from the lower
right side of the facia, carry out the f o l l o w i n g operations:
disconnect supply lead
connector (1);
- unscrew the screw indicated by the arrow, lower tab (2) and turn
fan mount base (4) clockwise to stop ( 3 ) ;
- remove fan with base (4) and impeller (5) from the evaporator heater - distributor assembly.
P A S S E N G E R C O M P A R T M E N T FAN E L E C T R O N I C S P E E D GOVERNOR
Removing-refitting
To remove regulator (6), work on the lower left hand side of the facia to remove protective cover ( 7 ) .
Disconnect connector (8) and remove from the above assembly after unscrewing the retaining bolts.
E L E C T R O N I C CONTROL
UNIT
Removing- refitting
- Remove guard (A) of upper tunnel trim to
gain access to the control unit.
- Disconnect electrical connections A and
withdraw the control unit from the side
(NOTE: the control unit is not fastened
w i t h bolts but fitted on a slide).
NOTE
Copyright
Fiat Auto
55
Auxiliary units
Marea-Marea Weekend
50.
V A R I A B L E FLOW C O M P R E S S O R S P E C I F I C A T I O N S
Make and type
NIPPONDENSO TV 12 SC
3
Specified output
130-170 c m of ND - OIL 9
12V
Minimum
electromagnetic
coupling activation voltage
7.5 V
40W
max 2.2 A
HEATING/VENTILATION S Y S T E M SPECIFICATIONS
Quantity of R 134 A coolant required to charge the system
0.600 Kg
petrol versions
w i t h a/c
TD
versions
92 2 C
92 2 C
88 2 C
87 2 C
87 2 C
83 2 C
97 2 C
92 2 C
92 2 C
87 2 C
TD
versions
Resistance value
0.30.03 Q
0.230.02 Q
184+0/-4C
240+0/-4C
56
Marea-Marea Weekend
Auxiliary units
Thermostatically-controlled air conditioner
50.
S E T T I N G P R E S S U R E S FOR T H R E E - S T A G E P R E S S U R E S W I T C H
S E T T I N G L E V E L S (in bar)
CONDITION
CIRCUIT
Open
Closed
Closed
LEVEL
1st
Contact location
2nd
Open
28 - 3 / + 2 (25 - 30)
Open
22 - 3 / + 2 (19 - 24)
differential 6 2
Closed
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Fiat Auto
57
Auxiliary units
Marea-Marea
Weekend
on central outlet
20 C and 30 C.
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50.
- Activate the compressor by pressing key
(A) and check that:
- within 2 - 4 m i n u t e s t h e T E M P E R A T U R E
AT THE OUTLETS DROPS TO 8 - 11 C
and stabilises.
- within 1 minute, pressure gauge B
(HIGH PRESSURE) RISES TO 15 - 16
bar. At this point, engine cooling fan cuts
in to restore pressure t o 10 - 12 bar. This
cycle is repeated continually.
NOTE
Probable causes
Anomalies
Pressures doe not alter significantly from the
initial value
Delivery pressure does not rise to 15 bar, intake pressure drops to below 1 bar and outlet
temperature drops slowly
a)
The delivery pressure is correct, intake pressure drops below 1 bar, temperature to outlets is below 8 C and the system never goes
off
Copyright
Fiat Auto
b)
if the intake pressure is higher than 2.5 3 bar, the system contains too much gas.
if the intake pressure is too low, the i n take valve is probably blocked.
59
Auxiliary units
Thermostatically-controlled air conditioner
Marea-Marea
Weekend
50.
E Q U I P M E N T U S E D FOR HANDLING R134A COOLANT IN V E H I C L E A I R CONDITIONING S Y S T E M
"R134A"
The Cleaner 134 device (shown in figure) is used to carry out the following operations on a vehicle air
conditioning system:
-
NOTE
OPERATIONS
for connect-
60
5.
6.
7.
8.
9.
10.
11.
12.
13.
17.
18.
19.
Moisture indicator
Function selector
Function switch
Compressor forcing button and
"LOCK" warning light"
"PUMP" warning light"
" L E V E L S " warning light"
Device activated "ON" warning light"
Low pressure side gauge
Low pressure cock "LOW"
Fitting for low pressure end hose
Cock "VAC"
Liquid gauge
Cock " R E F "
High pressure end pressure gauge
Low pressure end hose
High pressure end hose
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Auxiliary units
Thermostatically-controlled air conditioner
50.
COCK
LOW (9)
COCK
VAC (11)
COCK
R E F (13)
COCK
HIGH (16)
FUNCTION
SELECTOR
KNOB (2)
FUNCTION
SELECTOR
K N O B (3)
open
closed
open
open
position 1
position 1
open
open
closed
open
position 2
position 0
closed
closed
open
open
position 1
position 2
closed
closed
open
open
position 1
position 2
closed
closed
open
open
position 1
position 1
LE
closed
closed
closed
closed
position 1
position 3
OPERATION
H
Coolant recovery and recycling
El
Vehicle system draining and drying
El
Charging vehicle air conditioning system
El
Transferring coolant from dispensing cylinder to a canister
E
Transferring coolant from canister to equipment dispensing cylinder
E
Replacing vehicle filters
The table contents summarise the instructions given on the labels applied centrally to the top of the device.
For operations listed previously, consult table and note the points listed for each in the following text.
Consult handbook provided with device for more detailed instructions.
R E C O V E R I N G AND R E C Y C L I N G H E A T I N G / V E N T I L A T I O N S Y S T E M COOLANT
Before recovering coolant from vehicle air conditioning system, check that device dispensing cylinder
contains only a small amount of coolant. Then run vehicle engine with air conditioning system activated
for 10-15 minutes.
This precaution prevents the device dispensing cylinder filling completely and automatic interruption of
the operation with transfer of excess coolant to a canister. A maximum amount of coolant may be recovered from the vehicle system under these circumstances.
When coolant pressure at the device low pressure intake reaches a level of - 0.2 bar, a pressure switch
automatically interrupts operation and BL0CK warning light (14) comes on. An acoustic signal indicates that the recovery operation is complete
Copyright
Fiat Auto
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Auxiliary units
Marea-Marea
Weekend
At the end of the above operation, oil separated from the recovered
coolant by the distillation unit may be observed by consulting level
gauge (A) and drained off through fitting (B) after opening cock ( C ) .
MOTE
conindi-
The samel amount of clean antifreeze may be added to the vehicle sys->
tern if necessary to make up the amount taken up by the device with
the coolant.
P4f062H01
The oil level in the warm vacuum pump should not be higher or lower than the extreme levels shown on
the indicator window (1). If too high, the pump will be overfilled with oiJ and overheat so that it performs inefficiently. If too low, insufficient lubrication could lead to the 'danger of seizure.
s
Vacuum pump operation i s indicated by PUMP warning light coming on. When left hand pressure/vacuum gauge (low pressure side) indicates a vacuum reading, close V A C cock and turn function selector knob to 0.
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50
T R A N S F E R R I N G COOLANT F R O M D E V I C E D I S P E N S I N G C Y L I N D E R TO A C O N T A I N E R ( C A N I S TER)
Before beginning transfer, ensure that recipient is approved for pressures up to 35 bar and set up a vacuum
inside (at least -0.1 bar)
Use only the red hose for the transfer operation (high pressure side) and connect to recipient service
valve. Note that recipient must be filled solely w i t h an amount equivalent to less than 8 0 % of its volume.
T R A N S F E R R I N G COOLANT F R O M C A N N I S T E R TO E Q U I P M E N T D I S P E N S I N G C Y L I N D E R
If this operation becomes necessary while charging the vehicle air conditioning system, first empty the
system and recover all the coolant added.
C H E C K I N G P R E S S U R E S IN V E H I C L E S Y S T E M
Pressure values can be read directly off the t w o device gauges (blue low pressure and red high pressure)
after connecting the t w o device hoses to the system.
/
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Fiat Auto
63
Auxiliary units
Marea-Marea Weekend
INNER
DISC
COLOUR
CORRESPONDING
WORDING
DRY
LIGHT BLUE
PURPLE-BLUE
RED
According to the colour assumed, moisture indicator (1) records the amount of moisture present in
the liquid coolant after f l o w i n g through the first
three device filters.
Colours indicating percentage moisture levels for
given temperatures are shown in the table below
CAUTION
WET
24 C
38 C
52 C
Less than 5
Less than 10
Less than 20
5 - 10
10 - 30
20 - 50
Greater than 15
Greater than 30
Greater than 50
When the central disc is light blue, the coolant is in good condition. When the colour becomes darker
blue, the filters are still in good condition and the coolant contains an acceptable level of moisture.
When the colour begins to lose its bluish shade and becomes purple, replace the filters.
The filters must be replaced at the end of the operation in progress even if the central disc has become
red. This is possible because the safety filter ensures an acceptable level of coolant cleanliness is maintained (third filter station).
To estimate the temperature of coolant in the moisture indicator, rest the thumb of one hand on the clear
part and use the colour scale given in the following table for the relevant temperature according to the
sensation felt:
Sensation of cold
Sensation of warmth
No sensation
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50.
D I S T R I B U T O R HEATER A S S E M B L Y
Removing
- Drain engine cooling system;
- remove the upper trim from the tunnel and
the instrument facia (see Group 70);
- working from the lower rear of the engine
bay, loosen the two clips arrowed in the
figure alongside and disconnect the two
rubber pipes from the ends of the metal
pipes protruding from the engine bay,
which are connected in turn to the split
heater radiator fitting;
- unscrew the bolts indicated by the arrows
in the lower figure, which secure the heater
- distributor assembly to the body;
- disconnect the electrical connection (1)
and remove the above assembly from the
vehicle;
P4F065H02
Copyright
Fiat Auto
65
Auxiliary units
Marea-Marea Weekend
Disassembly
Carry out the following operations:
- unscrew the arrowed bolts, w h i c h fasten guard (1) to the distributor heater assembly at the bottom
and side (right hand side).
- unscrew the three bolts (2) and take care not to lose the nuts in the seats on the heater radiator split
fitting ( 3 ) ;
- remove plate (4) and disconnect both metal pipes (A) from the heater radiator split fitting;
- disconnect connectors (5 and 6) from resistor (7) and fan (8) respectively and release w i r i n g (9)
from the various clips retaining it t o the above assembly;
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Heater with manual controls
50.
P4F067H01
- remove safety washer (1) and withdraw the coiled eye at the end of cable (A) from the pin of lever
(2). Undo the cable from the assembly by releasing its sheath from retaining clip (3) after removing
(moving to one side) the safety clip;
- undo sheath of cable (B) from retaining clip (4) and release the coiled eye at the end of of the cable
from the L-shaped pin on lever (5);
- remove clip (6) by moving to one side and release the sheath of cable (C) from the underlying clip.
Release the coiled eye at the end of the cable from the L-shaped pin on lever (7);
- move spring (8) retaining control support (9) sideways in the arrowed direction in order to remove it
from its seat on the distributor heater assembly;
- separate the control mount together with cables and electrical wiring from the assembly;
Copyright
Fiat
Auto
67
Auxiliary units
Marea-Marea
Weekend
- unscrew the screw indicated by the arrow and turn fan mount base (12) anticlockwise after lifting tab
(10) until it reaches stop ( 1 1 ) . Then remove the fan from the assembly;
- unscrew the two screws (13) and remove resistor (14) from the shroud;
- unscrew the screw indicated by the arrow in the lower left hand figure and slowly remove the heater
radiator (15) from the assembly. Take care not to spoil the finned surface and the self-adhesive foam
rubber strip round the outside;
P4F068H02
68
P4F068H03
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Marea-Marea Weekend
Auxiliary units
Heater with manual controls
50.
***
Copyright
Fiat Auto
69
Auxiliary units
Marea-Marea Weekend
50.
O);
unscrew the bolts indicated by the arrows,
w h i c h join together the t w o heater distributor unit case halves;
release the right hand case half (10) from
the left hand half (11). Take care not to
spoil the flaps;
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Heater with manual controls
50.
Copyright
Fiat Auto
(8),
deupflap
71
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50.
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CONTROL SUPPORT A S S E M B L Y
Removing
- remove the facia trim (see Group 7 0 ) .
Copyright
Fiat Auto
73
Auxiliary units
Marea-Marea
Weekend
50.
unscrew
bolts
(9)
which secure the retaining plates of the
three
cable sheaths
( A - B - C ) and release
the cables from toothed
sectors (8) and lever
02);
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Auxiliary units
Pollen filter
50.
REMOVING-REFITTING
POLLEN F I L T E R
- Open the bonnet lid.
Unscrew bolts (A) and remove pollen filter
cover ( B ) .
NOTE
Copyright
Fiat Auto
VII 96 - Update
75
Electrical equipment
Marea-Marea Weekend
Index
55.
page
page
P R O T E C T I O N AND S A F E T Y D E V I C E S
VARIOUS DEVICES
L O C A T I O N O F C O M P O N E N T S ON V E H I C L E
2/2
4/2
J U N C T I O N UNIT
- Junction unit
- Diagram showing junction unit internal
connections
- List of fuses and main circuits protected
- Description of cables and connectors
- Junction unit
9
10
11
12
14
INSTRUMENT PANEL
15
16
17
18
19
20
20
21
LIGHTING
- Polyeliptical headlamps
- Front light cluster with direction
indicator
- Replacing front light cluster bulbs
- Fog lamps
- Headlamp alignment
- Rear light cluster
- Additional brake light
- Number plate lights
- Side direction indicator
- Courtesy lights
22
24
25
26
28
29
31
32
33
33
S E R V I C E S CONTROL UNIT
37
38
38
39
39
39/1
39/1
39/2
39/2
40
40
40
41
45
47
47
48
48
49
51
53
55
57
57
58
58
59
60
61
66
67
68
68
69
69
69
71
71
72
63
63
63
63
63
64
64
65
65
66
75
75
75
76
76
76
42
E L E C T R I C REAR WINDOWS
l l f
43
44
-
9 7
Cont' <ra?
Electrical equipment
Marea-Marea Weekend
Index
55.
page
-
Adjusting balance
Adjusting fader
Loudness function
Mute function
Radio function
RDS function
Audio cassette player
Compact disc player function
Operation of CD player
Clock function
77
77
78
78
79
80
84
88
89
93
RADIO EQUIPMENT
- Anti-theft protection
- Controls on the steering wheel
- Technical data
- Location of radio system components
- Removing AD 185M radio
- Removing AD 185H radio
- Refitting radio
- Replacing radio
- Opening/closing cassette console
flap
- Removing-refitting speakers
- Removing-refitting radio aerial cable
95
97
97
98
99
100
101
101
102
104
108
FIAT CODE
- Introduction
- Location on vehicle of system
components
- Procedure for programming keys with
pristine system
- Procedure for re-programming keys
- Emergency starting procedure
- Fiat CODE wiring diagram
- Removing-refitting Fiat CODE
control unit
- Removing-refitting Fiat CODE aerial
- Replacing transponder
109
109
112
112
113
114
116
116
117
ALARM
-
119
120
120
120
121
122
122
122
122
123
124
125
126
127
page
- Control unit wiring diagram
131
- Removing-refitting receiver in courtesy light 132
- Removing-refitting alarm control unit
132
AIR BAG AND PRE-TENSIONERS
- Introduction
- Driver's air bag module
- Inflation device
- Clock spring
- Passenger air bag module
- Pre-tensioners
- Electronic control unit
- Air bag warning light
- Duration of system components
- Autodiagnosis
- Fault diagnosis
- Wiring diagram
- Operations on vehicle
- Dangers to health
- Effects of over exposure
- Safety instructions for handling Air Bag
modules
- Disposing of air bag modules
- Safety instructions for handling
pre-tensioners
- Removing-refitting driver's Air Bag
- Removing-refitting clock spring
- Removing-refitting passenger Air Bag
- Replacing passenger Air Bag
cover
- Removing-refitting air bag control unit
- Removing-refitting pre-tensioners
RECHARGING
- Battery
- Alternator
133
134
135
135
136
137
138
142
143
143
143
145
146
149
149
149
151
151
153
154
156
157
158
160
162
162
STARTING
- Starter motor
175
LIGHTING
- Electric headlamp alignment
187
127
128
129
129
130
I I I - 9 8 - Cancels a n d replaces
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Electrical equipment
Marea-Marea Weekend
55.
P R O T E C T I O N AND S A F E T Y D E V I C E S
All the vehicle power lines are designed and constructed to the most up-to-date safety and protection
standards, particularly in terms of fire protection.
T w o main types of protection are adopted:
- active protection, designed to reduce possible causes of faults at source;
- passive protection, designed to minimise the effects of faults if they arise.
The first category includes careful design of wiring, wire position and anchorage inside specially shielded and protected cableways.
Wires connected to the alternator and motor have been modified through the adoption of protective
caps etc. A shielded sheath has also been adopted for some particularly exposed sections of w i r i n g .
The passive protections include all interventions, invariably adopted on vehicles, to reduce high fault
currents (overloads and short-circuits).
All fuses in the system are designed on the basis of rated uptake if all services are activated at the same
time, and in order to cut in if the whole system short circuits.
Through the adoption of a box containing four maxi fuses, plus other external fuses, it is possible to
protect all power sources, w i t h the sole exception of the lead connecting the battery to the starter m o tor, and the lead connecting the starter motor to the alternator. The alternator leads are protected by an
extra armoured sheath.
Inside fuse box " M A X I " A:
rEFil 30A
[J/B21 60A
flGNl 40A
J/B11 80A
all
petrol
engine versions
2387 TD
1910 TD
FUSE B
30A
40A
50A
Electrical equipment
Marea-Marea Weekend
ss.~
10A
11
1
<r
C 3
co
nj
m
v.
Iff/
'If N .
GN
10
:J\h'm
p1 > >
<c
^
<c
so
I BR
275
1
I3J
276
87 30 85
86
87 30 85
86
g,U
m]
'ii.IT
ij
RN | R
i
io
i s
T
111
[_!_
ii
1 2
RN
8685 308787
'll. 11 111'
'
' R
72
i:
33
113
in
l3j
55
10Q-R
J U 03
tfc
7
\ ."3ftn
OO
l
1 S
I9l
rrrtn
O / U / H J U
B 3
0701*1(1
DC
a
..i.n
QO
i0j '
HI
1998
87 30 65
u.u
B6
.ii'
R - ^ - R R
RN-
l3j
[rfH
BY
12
E O T
81
p.
91
3.
4.
5.
10.
10A.
11.
12.
33.
55.
72.
81.
91.
96.
()
IK
99
El
96
<c
O
oo
129
I3l
-RN-^
N.D.
99.
113.
129.
131.
191.
274.
275.
Publication
no.
506.763/02
Electrical equipment
Marea-Marea Weekend
55.
Main power source wiring diagram (diesel versions)
j
GLD'
'1 NN
||(
.M .
M f i i | i | i
1A
129
OJ
L3
J/B
J/B
10
LJEJ
v
'
| BR
R R
Idl
<
(0)
L3J
f T20AP 99
N.D,
BR
86 85 30 87 87
fcfc !
N.D.
12
9
T
96
p^
o
j oo (-^r vo oo
El
129A
TT
10
T
11
T
ll
f R I
72
81
91
1 /f
\\.n JJ 1S
QC
OO
CJ
R R RN-
55C
303
f r f H
0/ 1ft
JU oD
0 7
113
i3f
15
12 13
T T
m # fe-
n., n
33
R I
ID
I T h n
87B7A30 85 86
201
131
TO"
-RN-
N.D.
3. Power fuse box
4. Junction unit
5. Dipped beam relay
10. Battery earth on engine
10A. Battery earth on body shell
1 1 . Battery
12. Ignition switch
33. Fog lamp fuse
55C. Front cable/engine connection
72. Front electrically-operated w i n d o w fuse
8 1 . Rear electrically-operated w i n d o w fuse
9 1 . Power relay operated by ignition key
96. ABS power fuse.
99.
113.
129.
129A.
131
201!
303.
4F200L
Copyright
Fiat Auto
VII-96 - Update
2/1
Electrical equipment
Marea-Marea
Weekend
55.
LOCATION OF RELAYS A N D FUSES ON VEHICLE (ENGINE BAY - petrol engines)
250 247
151150
IIIIS5P^^196
276*
275*
237 94 99 273 274
3.
94.
96.
98.
99.
122.
123.
123A.
124.
129.
150.
151
2/2
Publication no.
506.763/02
Marea-Marea Weekend
Electrical equipment
Location of components on vehicle
55.
LOCATION OF R E L A Y S AND F U S E S ON V E H I C L E ( E N G I N E BAY - diesel versions)
Copyright
Fiat Auto
200.
237.
303.
304.
305.
(1910
Electrical equipment
Marea-Marea Weekend
55L
LOCATION OF RELAYS AND F U S E S ON V E H I C L E (PASSENGER COMPARTMENT - petrol engines)
2;
250
257 150
247
1998
4.
5.
32.
33.
72.
81.
91.
92
Junction unit
Dipped beam relay
Fog lamp relay
Fog lamp fuse
Front electrically-operated w i n d o w fuse
Rear electrically-operated w i n d o w fuse
Power relay operated by ignition key
Electrically-operated sun-roof protection
fuse
113. Door lock system fuse
133. Air bag system fuse
150. Injection system control relay (1747,
1 999)
1747
Publication no.
506.763/02
Electrical equipment
Marea-Marea Weekend
55.
LOCATION O F R E L A Y S AND F U S E S ON V E H I C L E ( P A S S E N G E R C O M P A R T M E N T - diesel ver
siorrs)
288
1910-100
4.
5.
32.
33.
72.
81.
91.
92.
Junction unit
Dipped beam relay
Fog lamp relay
Fog lamp fuse
Front electrically-operated w i n d o w fuse
Rear electrically-operated w i n d o w fuse
Power relay operated by ignition key
Electrically-operated sun-roof protection
fuse
113. Door lock fuse
133. Air bag system fuse
200. Stop solenoid relay (TD)
234.
263.
288.
295A.
295B.
288
2387
4F202L
Copyright
Fiat Auto
VI1-96 - Update
4/1
Electrical equipment
Marea-Marea
Weekend
55.
LOCATION O F C O N T R O L U N I T S AND T E S T E R S O C K E T S ( E N G I N E BAY - petrol engines)
P4F005L01
100.
03.
; 39.
140.
1
4/2
Publication
no.
506.763/02
Marea-Marea Weekend
Electrical equipment
Location of components on vehicle
55.
LOCATION O F C O N T R O L UNITS AND T E S T E R S O C K E T S ( E N G I N E BAY - diesel versions)
P4F207L01
100.
103.
139.
176.
Copyright
Fiat Auto
device
V I I - 9 6 - Supersedes p r e v i o u s vers.
Electrical equipment
Marea-Marea Weekend
55.
LOCATION OF C O N T R O L UNITS AND T E S T E R S O C K E T S ( P A S S E N G E R C O M P A R T M E N T )
P4F006L02
114.
130.
131.
160.
190.
238.
244.
249.
253.
266.
267.
278.
294.
Publication
no.
506.763/02
Electrical equipment
Marea
55.
LOCATION OF EARTH POINTS ON V E H I C L E
8.
9.
10.
10A.
18.
22.
42.
174.
NOTE
Copyright
Fiat Auto
For engine earths, refer to Group 10 Engine for the various engine versions.
Electrical equipment
Marea Weekend
55^
P4F008L01
8.
9.
10.
10A.
18.
22.
42.
174.
NOTE
For engine earths, refer to Group 10 Engine for the various engine versions.
11
Publication
no.
506.763/01
Electrical equipment
Marea-Marea Weekend
Junction unit
55.
J U N C T I O N UNIT
'
=F13=|
=1 F " H1 I -1F 9 - 1I I =1 F1 =1 II=F10=II
1
1 1
1
The connectors
cannot
be connected
incorrectly
because
each
one
is
individually
shaped. The same letters are used to identify
the connectors as are
adopted in the wiring
diagrams.
I-.11-J-
m
IB
ft
[Hi
rt/ift
12
F
9
ft
4 5
V*
B
3 *10
i i
Ih-
T
14
discharge
1 5
P4F02AL02
NOTE
Copyright
Fiat Auto
Electrical equipment
Marea-Marea Weekend
Junction unit
3&
10
Publication
no.
506.763/01
Electrical equipment
Marea-Marea Weekend
Junction unit
55.
L I S T O F F U S E S AND MAIN P R O T E C T E D C I R C U I T S
N
Fus.
Amp.
15
4
5
10
10
10
10
Symbol
Protected circuit
SERVIZI Reversing
SERVC
I ES lights
-
lights
-Brake
Supplementary
brake light - Turn signals Device power supply Alarm control unit and remote control receiver power
supply
-;oo;-
-:oo;|D
ID
I
Fus.
Amp.
10
10
10
10
10
10
Symbol
ID
ID
Protected circuit
- Main
warning
Rear fog lamps - Radio Central locking - Electrically-operated mirror control Front and rear w i n d o w s .
Hazard warning lights.
11
30
12
30
13
20
Horns.
14
20
Windscreen
wiper
Rearscreen w a s h / w i p e Windscreen
washer/rear
w i n d o w - Headlamp washer
intermittent function - Electrically-operated front w i n d o w s - Fan motor and air
condition compressor relays.
15
30
Passenger
compartment
heating/ventilation fan m o tor (heater) - Heated seats Sun-roof - Cigar lighter Fan motor and air c o n d i t i o n
compressor relays.
i
Copyright
Fiat Auto
11
Electrical equipment
Marea-Marea Weekend
Junction unit
55.
D E S C R I P T I O N O F W I R I N G AND C O N N E C T O R S
CONNECTOR B
CONNECTOR A
Term, Wiring
no.
colours
BR
Circuit involved
+ 30 power supply from fuse box
Term,
no.
Wiring
colour
Wiring
colour
RN
MB
AN
H
HN
VN
CONNECTOR D
CONNECTOR C
Term,
no.
Circuit involved
Term,
no.
Circuit involved
Passenger compartment fan power
supply (with air conditioning), air
conditioner control unit
Electric fuel pump drive, inertia switch
Passenger compartment fan power
supply (only heated), heated seats,
sun-roof, cigar lighter, fan and compressor relays (TD)
Right dipped beam
Left dipped beam, headlamp washer
enablement.
Left main beam
Right main beam
CONNECTOR E
Wiring
colour
Circuit involved
AN
AR
HB
Right headlamp
supply
N.C.
10
Horns
11
Horns
N.C.
alignment
power
Term,
no.
Wiring
colour
12
RN
13
AB
GR
14
AR
15
RG
16
AV
MN
17
GN
MB
18
RN
6
7
AN
GR
Term,
no.
Wiring
colour
10
HL
HR
11
AR
12
RG
LR
N.C.
13
RN
14
12
Circuit involved
N.C.
Left rear turn signal
CONNECTOR F
N.C.
Circuit involved
Dipped beam control
Publication
no.
506.763/02
Electrical equipment
Marea-Marea Weekend
Junction unit
55.
DESCRIPTION OF WIRING AND CONNECTORS
liijtiiiii
(cont.)
CONNECTOR H
CONNECTOR G
Term, Wiring
no. colours
Term, Wiring
no. colour
Circuit involved
Circuit involved
AN
N.C.
AN
RN
BN
GN
AN
RV
10
MN
HB
AR
AR
RN
10
RN
11
RN
12
RN
(versions
with
CONNECTOR J
CONNECTOR 1
Term, Wiring
no. colour
Term, Wiring
no. colours
Circuit involved
Circuit involved
RG
AG
GN
HL
LB
RG
CB
CB
Earth
LN
Horn signal
AG
N.C.
10
GN
Radio lighting
10
N.C.
11
GN
11
AB
12
GN
12
AR
13
14
N.C.
Copyright
N.C.
+ 15 power supply from ignition
Fiat Auto
from
ignition
N.C.
Compartment light power supply
Radio power supply
13
Electrical equipment
Marea-Marea Weekend
Junction unit
55.
REMOVING-REFITTING
1. Unscrew the bolts indicated and remove
the control unit cover.
2. Disconnect the electrical connectors fitted
into the front part of the control unit.
3. Unscrew the bolts retaining the control
- \ unit to the facia.
4. Move the control unit to one side, disconnect the connectors from the rear part of
j the unit and remove from the facia.
14
Publication
no.
operations
506.763/01
Electrical equipment
Marea-Marea Weekend
Instrument panel
55.
I N S T R U M E N T PANEL F O R S X S P E C I F I C A T I O N
Front side
1.
2.
3.
4.
5.
3 4 5 6
digital
T T T T T T I-
9 10 11 12 13 M 15 16 17 18 20
11 12 13 14 15 16 17 18 19 20
At
<$) fd>
Only 1910 TD 75
K4I-IKIALU2
Wiring diagram
Copyright
Fiat Auto
15
Electrical equipment
Marea-Marea
Instrument panel
Weekend
55.
INSTRUMENT PANEL FOR SPECIFICATIONS: ELX, HLX
Front side
1.
2.
3.
4.
5.
s.
H12I3MEK17S1920
8U1213MCttl7IB19a
Wiring diagram
16
Publication no.
506.763/01
Electrical equipment
Marea-Marea Weekend
Instrument panel
55.
WARNING LIGHTS
*><>:@
ID
,\I/
Aut.transmission
system failure
(only a/c version.)
Faulty Air Bag
Side lights
Main beam
-lamps
head
|:::::|
'ip
Fault in
system
injection
Generator
Seat belt
()
O
CODE
(0)
Fault in A B S system
Excessive
pressure (*)
turbo
oo
0000oo
yyyyy y
000 0
An, y y y y
OUTDOOR T E M P E R A T U R E
In air conditioned versions, it is possible t o
press a key on the central console t o display
outdoor temperature (in C). This is displayed for about 10 seconds before returning
to mileometer mode
If the outdoor temperature is less than +3C,
the reading FLASHES for about 10 seconds
in order to attract the driver's attention t o the
danger of ice!
NOTE
Copyright
Fiat Auto
Supersedes p r - v . o u s vers
Electrical equipment
Marea-Marea Weekend
ystmrnent panel
55T~
_ > ^ >
11 ^^^^^^r
10
-J
P4F06AL03
Connector B
P4F06AL02
Connector A
Wiring
colour
Generator (G)
LB
GR
GN
AG
+30
Not connected
HM
BN
Handbrake ( J )
Not connected
Turbocharging ( N )
Earth
BR
Speedometer signal
MN
Speedometer signal
10
CL
10
11
Not connected
11
AN
12
HG
12
Not connected
13
Automatic transmission ( A )
Wiring
colour
HN
BN
LN (CN)
T3
14
Circuit involved
15
CN (CB)
16
L (AR)
17
HB
18
Not connected
19
RV
A B S failure ( M )
20
18
Circuit involved
14
15
GL
16
HG
Fuel level
17
+ 15
18
19
20
Earth (eletronic)
Speedometer signal
Speedometer signal
Publication
no.
506.763/02
Electrical equipment
Marea-Marea Weekend
Instrument panel
55.
C H E C K PANEL D E V I C E
8
1
B-
X ^ ^ h
18
Wiring
colour
Circuit involved
GL
RV
GR
GN
GV
HB
HL
RG
10
RN
11
12
13
HG
14
HV
15
HN
16
HR
17
Tail-gate
18
AV
/
H
-D
01
/
G
-C
I \
F2
F1
E X T E R I O R L I G H T I N G C H E C K : The electronic module inside the control panel is able to check inappropriate electrical loads in the case of certain vehicle electrical functions and to check whether circuits
are open or closed.
- F: B R A K E L I G H T S : w h e n the brake pedal is pressed d o w n , a led comes on (F1 left or F2 right) together with main exterior lighting led G to indicate a fault in the bulb or a break in the light wiring. Neither the
supply fuse nor the central third brake light are checked.
- G : S I D E L I G H T S A N D N U M B E R P L A T E L I G H T S : whenthesidelightsareon, led Gcomeson to indicate a fault in one of the bulbs or a break in the wiring. The t w o supply fuses are also checked ( N O indication is given if t w o fuses blow simultaneously!)
- H: R E A R F O G L A M P S : when the lights are on, led H and general exterior lighting led G come on to indicate a fault in both bulbs or a break in the light wiring. The supply fuse is also checked.
Copyright
Fiat Auto
19
Electrical equipment
Marea-Marea Weekend
Instrument panel
55.
S M A R T INDICATORS
In the case of t w o functions very important for vehicle safety (ABS and AIR BAG SYSTEM), the normal
warning lights have been replaced by an electronic circuit, which is responsible for SMART INDICATOR functions:
a warning light comes on in response to a
signal from the control unit, which sends a
failure or alarm signal to the control panel.
The same warning light also comes on if a
broken connection or short circuit to earth is
detected between the control unit and the
panel. This is achieved by the same circuit
shown in the figure: the warning light in
question is led D2. This comes on when an
earth signal is received from control unit (1)
or if the connection is broken or short circuits
to earth.
circuit.
The ABS and Air Bag systems are supplied as options on some versions. If these systems are NOT installed on the car, the integrated circuit w o u l d indicate a continual fault!
A lamp holder (A) for the A B S system and a lamp holder (B) for the Air Bag system are fitted in parallel
to led D2.
If these systems are present, a WHITE CAP is fitted on the sites and the circuit works normally. If one of
the t w o systems is NOT present, the cap is replaced by a bridge (T) (BROWN) w h i c h short-circuits the
warning light.
REPLACING BULBS
The control panel consists of a single integrated component supplied in one piece. It is possible to replace the individual warning light bulbs, w h i c h are of t w o types: bulbs identifed by (1) in the figure are
for control panel lighting, bulbs marked (2) refer to warning lights. Both are 12V, 1.2 W bulbs.
20
Publication
no.
506.763/01
Marea-Marea Weekend
Electrical equipment
Instrument panel
55.
REMOVING-REFITTING
1. Remove the junction box protective cover.
Unscrew the outer control panel frame retaining screw.
2. Unscrew the outer control panel frame retaining screws.
3. Remove the facia frame after disconnecting the t w o panel lighting and headlamp
adjustment rheostat connectors
(arrowed).
4. Unscrew screws fastening control panel
to the facia.
5. Disconnect electrical connections from
the control panel and remove panel from
the vehicle.
NOTE
Copyright
Fiat Auto
operations
21
Electrical equipment
Marea-Marea Weekend
Lighting
55.
POLY E L L I P T I C A L H E A D L A M P S
Some vehicle specifications are fitted w i t h
POLYELLIPTICAL HEADLAMPS.
Unlike conventional headlamps, these headlamps are fitted with a lens (6) at the centre
of the light beam, and can be identified externally by a dark area at the middle of the
headlamp.
Reflecting surface (3) is not a conventional
parabola but an ellipse. The light beam is
shielded not only by a darkened diaphragm
(4) as in the case of dipped headlamps, but
also by lens (6) located in the centre of focus.
This delimits lighted areas from dark areas
more effectively in order to reduce annoyance to other drivers approaching in the o p posite direction.
CONVENTIONAL HEADLAMP
P O L Y E L L I P T I C A L HEADLAMP
22
1. bulb holder
2.
bulb
3a. parabolic
reflector
3b. elliptical
reflector
4.
darkener
5.
glass
6. lens
Publication
no.
506.763/01
Marea-Marea Weekend
Electrical equipment
Lighting
55.
Polyelliptical headlamp with convex lens located immediately after focus F
P4F10AL01
P4F10AL02
Note that a polyelliptical headlamp can provide increased depth, lighting intensity, range angle and
overall illuminated area.
Copyright
Fiat Auto
23
Electrical equipment
Marea-Marea Weekend
Lighting
55.
FRONT L I G H T C L U S T E R WITH
TURN S I G N A L
Removing-refitting
1. Unscrew screws fastening light cluster to
the body.
2. Disconnect electrical connectors from the
light cluster (connector A is present only
in polyelliptical headlamps).
3. Remove the light cluster assemblly from
the vehicle.
4. Fit pin A into the appropriate seat on the
body during assembly.
24
Publication
no.
506.763/01
Marea-Marea Weekend
Electrical equipment
Lighting
55.
R E P L A C I N G FRONT
LIGHT C L U S T E R
Dipped and main beam bulbs
1. Remove the plastic protections by pressing the lever shown, which retains them to
the light cluster.
2. Remove the bulb (after undoing the retaining clip) from the light cluster. Disconnect the bulb from its connector and
replace. Avoid touching the bulb w i t h
bare hands.
Copyright
Fiat Auto
25
Electrical equipment
Marea-Marea Weekend
Lighting
55.
F O G LAMPS
Removing-refitting
1. Position the vehicle on a lift, raise and u n screw the bolts shown in the figure.
Withdraw the foglamp from the front part
of the bumpers
3. Unscrew the screw shown in the figure.
4. Unscrew bolts indicated in figure.
5. Separate the frame from the fog lamp.
26
Publication
no.
506.763/01
Marea-Marea Weekend
Electrical equipment
Lighting
55.
Copyright
Fiat Auto
27
Electrical equipment
Marea-Marea Weekend
Lighting
55.
HEADLAMP ALIGNMENT
A. Horizontal light beam adjustment screw
B. Vertical light beam adjustment screw.
28
Publication
no.
506.763/01
Marea
Electrical equipment
Lighting
55T A I L LIGHT C L U S T E R
Removing-refitting
- Open the boot lit; raise the access hatch after releasing from retainer ( A ) .
- Disconnect connector (B) then unscrew
the retaining nuts indicated and remove the
tail light cluster from the outside.
Replacing bulbs
- Unscrew bolts (A) and remove the bulb
holders.
Copyright
Fiat Auto
29
Electrical equipment
Marea Weekend
Lighting
55.
30
Marea-Marea Weekend
Electrical equipment
Lighting
55.
S U P P L E M E N T A R Y BRAKE L I G H T
(MAREA)
Removi ng - ref itti ng
1. Open the boot lid.
Disconnect connector ( A ) of the supplementary brake light.
Unscrew bolts (B) and remove the supplementary brake light.
Replacing bulbs
2. Unscrew knobs (A) and remove the bulb
holders.
Remove the bulbs by pulling them out
(press-fitted).
S U P P L E M E N T A R Y BRAKE L I G H T
(MAREA WEEKEND)
Removing-refitting
3. Open the tail-gate.
Unscrew the bolts indicated and move the
top panel slightly to one side.
4. Disconnect connector of the supplementary brake light, then remove the upper
panel.
Copyright
Fiat Auto
31
Electrical equipment
Marea-Marea Weekend
Lighting
55.
N U M B E R PLATE L I G H T S
NOTE
32
Publication
no.
506.763/01
Marea-Marea Weekend
Electrical equipment
Lighting
55.
S I D E TURN S I G N A L
Removing-refitting
1. Insert a screwdriver at the arrowed point
in order to release the turn signal from the
body.
2. Disconnect connector from the bulb holder and turn the holder to release from the
lens.
INTERIOR C O U R T E S Y L I G H T S
Removing-refitting upper interior courtesy
light
3. Remove the panels arrowed.
4. Unscrew the screws indicated w h i c h retain the courtesy light to the body.
5. Disconnect electrical connections and remove the courtesy light from the vehicle.
Copyright
Fiat Auto
33
Electrical equipment
Marea-Marea Weekend
Lighting
55.
34
Marea-Marea Weekend
Electrical equipment
Lighting
55.
Removing-refitting rear courtesy light and
replacing bulb
- Insert a screwdriver in the side slot s h o w n
and prise the courtesy light from its housing.
Disconnect connector
courtesy light.
and
remove
the
Copyright
Fiat Auto
35
Electrical equipment
Marea-Marea Weekend
Lighting
55.
Removing-refitting luggage compartment
light and replacing bulb (Marea)
1. Open the boot lid and prise the courtesy
light off the top of the compartment using
a screwdriver.
2. Disconnect connector and remove the
luggage compartment light.
Replace bulb by releasing from the retaining strips ( A ) .
\ f
A
36
Publication
no.
506.763/01
Marea-Marea Weekend
Electrical equipment
Service control unit
55.
I N T E G R A T E D S E R V I C E CONTROL UNIT
A single electronic control unit, located beneath the facia trim on the right hand side manages a series of
functions and checks which are normally carried out by several separate components.
The following functions are carried out:
- FRONT WINDOW OPERATION: carried out automatically for raising and lowering of the driver's side
w i n d o w and only for lowering on the passenger side
- DOOR L O C K / R E L E A S E : operated simultaneously by a key command, via front door switches or using
a remote control unit. The tail-gate lock is also operated in the case of the Weekend.
- T I M E D OPERATION O F HEATED REAR WINDOWS (and door mirrors)
- T I M E D P A S S E N G E R C O M P A R T M E N T L I G H T I N G : the t w o front and rear courtesy lights are
operated when the doors are opened by the key or by remote control. The relevant courtesy light is
operated when the boot is opened.
In addition to the above four functons normally controlledby different devices, the integrated service
control unit also allows a new function:
C E N T R A L O P E N I N G / C L O S U R E OF DOORS AND WINDOWS: when the doors are locked using a key,
front and rear w i n d o w s and the sun-roof (if present) are closed if still open. When the doors are opened,
the four w i n d o w s are opened.
This is achieved by simply giving the key an extra twist in the lock for at least one second.
Copyright
Fiat Auto
P4F11AL01
P4F11AL02
Connector C
1 Timed rear courtesy light power supply
2 Timed boot light power supply
3 Timed front courtesy light power supply
4 Output for sun-roof closure
5 N.C.
6 Lock command from remote control
7 Rear driver's side door switch for interior lights
8 N.C.
9 Output for rear window closure
10 Output for rear window opening
11 N.C.
12 N.C.
13 Passenger side rear door switch for interior lights
14 Boot switch for interior lights
15 Release command from remote control
16 N.C.
37
Electrical equipment
Marea-Marea Weekend
55.
FRONT WINDOW OPERATION
Safety systems
The w i n d o w s are stopped (elecrical power to the motor turned off) w h e n the glass reaches the top or
bottom of its travel, or if an obstacle is inserted and blocks the glass. This is regulated by continual self
-adaptive control of the direct current motor.
The control unit operates as follows:
- if the motor control signal is cut off during operation, the control unit de-activates the system within a
maximum time of 500 milliseconds: this interruption is recordedwhen the current taken up by the
w i n d o w motor (continually monitored) is found to be less than 0.8 A ;
- if the control buttons are found to be faulty (short circuit or keys stuck d o w n ) , when the control unit is
activated, the relevant control is inhibited until the defect disappears (or the key is released) for a time
greater than 60 milliseconds
B16
8HJOCK
B15
C6
DOOR LOCK / R E L E A S E
A12
C15
B4
C4
C9
B5
C10
NOTE
WEEKEND
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Electrical equipment
Service control unit
55.
A system inside the electronic control unit system carries out a series of safety checks:
- at the end of each operation, it reads the position of the switches. If this position does not agree w i t h
the operation carried out, the operation is repulsed. If it agrees with the operation caried out, everything remains as normal. Repulsion occurs after a lock or release manoeuvre.
- if the motors receive a close command and the operation is not carried out proper-ly - i.e. the controls
do not agree - or a door is open (only in the case of a release manoevre) the circuit carries out a backward, opposite manoeuvre to re-align the lock.
- if the control unit records more than one consecutive, complete lockl/release manoeuvre at least 8
during a 20 second interval the system intervenes to operate the manoeuvre limiter, i.e. the system remains inhibited in released position for a period of 30 seconds.
- if battery voltage drops below 9 V, the system cuts out.
T I M E D OPERATION OF H E A T E D REAR
WINDOW (and door mirrors)
The control unit supplies the heated rear w i n d o w (and the remaining door mirror demister
coils) in timed mode, according to the f o l lowing system:
- key is turned to M A R
- an activation signal arrives from a switch
on the facia
- an activation signal arrives from the air
conditioner ( M A X DEF)
The power supply is turned off if:
- the key is turned to STOP or removed
- a deactivation signal arrives from the
switch on the facia
- a M A X DEF function deacivation signal is
received
If one of these t w o signals is not received, the timer keeps the coils activated for 20 MINUTES, in accordance w i t h a specific control system:
- the power supply is maintained for the first 10 MINUTES
- DURING THE NEXT 10 MINUTES, the power supply is cut off if the battery voltage drops below 11.6
V (and restored if the voltage rises to and exceeds 1 3 V ) .
When the heated rear w i n d o w remains active, the warning light comes on too.
NOTE
The switch control on the facia always takes priority over the MAX DEF function, i.e. the rear
window goes off if it is activated by means of the MAX DEF function and the switch on the facia
is pressed.
Copyright
Fiat Auto
39
Electrical equipment
Marea-Marea
Weekend
55.
TIMED PASSENGER COMPARTMENT
LIGHTING
When the doors are released by the key or remote control, both front and rear lights are
operated in timed fashion according to the
following system:
- time of 7 SECONDS following door reclosure. Timing is cut off when the key is
turned t o MAR: thish allows the driver to
enter the vehicle and insert the key
C3
-oTo-
C15
B16
B2
B3
TEMP.
w
v - v
C7
C13
CI - J
NOTE
^ C 2
C14
T I M E D BOOT OPENING
When the boot is opened, the luggage c o m partment light comes on for 20 MINUTES:
timing stops when the boot is closed.
V
'J
40
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Marea-Marea Weekend
Electrical equipment
Service control unit
55.
REMOVING-REFITTING SERVICE
T R O L UNIT
CON-
NOTE
Copyright
Fiat Auto
operations
41
Data:
F r i J u n zi
j.u.w^._
Electrical equipment
Marea-Marea Weekend
55.
R E M O V I N G - R E F I T T I N G DOOR L O C K S
- Remove the door panel and protective trim
and the outer door handle as described in
Section 70.
1. Unscrew the bolts fastening the lock to
the door.
2. Remove the lock from the door by disconnecting the connectors indicated by arrows and the door opening linkage.
NOTE
operations
connector
connector
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Marea-Marea
Electrical equipment
Weekend
Rear windows
55.
REAR WINDOW
OPERATION
Whereas the ELECTRICALLY-OPERATED
FRONT W I N D O W S are controlled by the i n tegrated service control unit (see previous
pages), the ELECTRICALLY-OPERATED
REAR WINDOWS are operated by a control
unit located beneath the rear seat.
The control unit controls the operation of the
t w o rear windows, which are operated by a
button on the door or by a button located at
the front on the driver's door.
The control unit permits automatic operation.
Operation is manual when the key operating
time is between 60 and 300 milliseconds.
Operation is automatic when the key operating time exceeds 300 milliseconds.
The windows stop when the key is operated
in the opposite direction.
For safety reasons, the electrically-operated
w i n d o w control may be cut out by means of
key ( A ) .
The rear w i n d o w s may be operated at the
same time as the front w i n d o w s by the integrated service control unit (see previous
pages).
NOTE
Connector A
1 +30
2 +30
3 Earth
4 Earth
9
10
11
12
13
14
15
16
Copyright
Fiat Auto
L e f t - h a n d w i n d o w control f r o m rear
door (lower)
43
Electrical equipment
Marea-Marea Weekend
55.
R E M O V I N G - R E F I T T I N G CONTROL UNIT
REAR E L E C T R I C A L L Y - O P E R A T E D WINDOWS
- Version with fixed rear seat: unscrew the
bolts fastening the rear cushion to the body
and remove from the vehicle.
NOTE
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Marea-Marea
Weekend
Electrical equipment
Various devices
55.
REMOVING-REFITTING
W I P E R MOTOR
WINDSCREEN
Copyright
Fiat Auto
45
Electrical equipment
Marea-Marea Weekend
Various devices
55.
NOTE
Reverse
to refit.
order of removal
operations
46
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no.
506.763/01
Marea Weekend
Electrical equipment
Various devices
55.
REMOVING-REFITTING
MOTOR
REAR
WIPER
operations
TAIL-GATE
Copyright
Fiat Auto
operations
47
Electrical equipment
Marea-Marea Weekend
Various devices
55.
REMOVING-REFITTING
SCREEN/REAR
WINDOW W A S H E R PUMP
NOTE
Reverse
to refit.
order of removal
REMOVING-REFITTING
W A S H E R PUMP
operations
HEADLAMP
48
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Marea-Marea Weekend
Electrical equipment
Various devices
55.
REMOVING-REFITTING
WASHER RESERVOIR
WINDSCREEN
NOTE
Copyright
Fiat Auto
operations
49
Electrical equipment
Marea-Marea Weekend
Various devices
55.
REMOVING-REFITTING
WINDSCREEN
WASHER FLUID RESERVOIR
(All other engine versions)
- Lift the bonnet lid.
Unscrew the bolts fastening the coolant
reservoir, then move aside to gain access to
the washer reservoir.
NOTE
50
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506.763/01
Electrical equipment
Marea-Marea Weekend
Various devices
55.
S T A L K UNIT
Removi ng- ref itti ng
- Remove the driver's side air bag as described in the relevant paragraph. Observe
the SAFETY REGULATIONS indicated. In
particular
Remove the coiled lead device as described in the paragraph "Air Bag and pretensioners".
Once the steering wheel has been
removed, the coiled lead device remains locked and does not allow the
two upper and lower plates to turn in
relation to one another. If the coiled
device is accidentally made to turn, it
must be replaced.
NOTE
In versions without an Air Bag, remove the horn cover, steering wheel
and both steering column covers to
gain access to the stalk unit. For
more details, see Group 41 - STEERING.
Copyright
Fiat Auto
Reverse
to refit
order of removal
operations
51
Electrical equipment
Marea-Marea
Weekend
Various devices
55.
Stalk unit wiring diagram
trtrt"t"f
1 2 3 4 5 7 6
12 3 4 5 6
6 7 4 1 2 3 5
Ml!
mmTYip
1 7 6 9 8 4 5 2 3
Ll
3>
a,
<i"J>
L J
52
Electrical equipment
Marea-Marea Weekend
Various devices
55.
Description of wiring and connectors
CONNECTOR B
CONNECTOR A
Term, Wiring
colour
no.
Circuit involved
Term, Wiring
colour
no.
Circuit involved
N.C.
LR
Main beams
HR
Dipped beams
3
4
HN
HG
AG
GV
SG
GV
Earth
CB
SN
N.C.
Ignition power source (start-up excluded)
N.C.
CONNECTOR D
CONNECTOR C
Term, Wiring
colour
no.
Circuit involved
Term, Wiring
colour
no.
Circuit involved
CB
CL
N.C.
LN
-
Horns
HL
CB
LB
AN
LP,
AG
5
6
N.C.
Copyright
Fiat Auto
53
Electrical equipment
Marea-Marea Weekend
Various devices
55.
Windscreen
wiper motor
A container on the motor case contains a switching circuit. This consists of a relay and a switch for automatic return to the blade rest position.
Windscreen washer
The windscreen washer pump is activated when the right hand stalk is moved toward the driver.
When the lever is released, the pump stops but the wiper stays on for about four seconds t o finish w i p ing the windscreen.
Front/rear washer
pump
wiper motor
The rear wiper motor is equipped w i t h a relay and a switch. These constitute the wiper control/reset circuit.
A. When the ring on the stalk is turned, one terminal of the control relay is connected directly to earth
via a cable which activates the motor continuously.
B. When the lever is pushed toward the facia, both pump and rear wiper are turned on simultaneously.
Headlamp washer
The headlamp washing system consists of a timer and a pump located on the washer fluid reservoir next
to the washer pump, to which are connected (via pipes) t w o nozzles fastened to the front bumper.
When the dipped beams are on, both windscreen and headlamp washer functions are activated when
the right-hand lever is moved toward the driver.
The timer is supplied by a 12V positive leading directly from the battery and protected by a fuse. This is
connectedto the left front earth.
With dipped or main beams activated, the timer is activated by turning the stalk ring and this enables
system operation for about half a second.
54
Marea-Marea Weekend
Electrical equipment
Various devices
55.
IGNITION S W I T C H
Removing-refitting key barrel
1. Disconnect the negative battery terminal
and remove the upper and lower steering
column guards (see Group 7 0 ) . Insert the
key into the ignition switch and turn to
MAR.
2. Press on the detent tooth as s h o w n in the
figure.
3. Withdraw the ignition block.
4. Remove the retaining ring fitted in the rear
part of the ignition block.
5. Press the lever to activate the parking
lights and turn the key to allow stop A to
position itself as shown in the figure.
Copyright
Fiat Auto
55
Electrical equipment
Marea-Marea Weekend
Various devices
55.
with
P4F056L04
56
P4F056L06
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Marea-Marea Weekend
Electrical equipment
Various devices
55.
BRAKE LIGHT SWITCH
Proceed as follows to replace the brake light
switch:
Removing
1. Disconnect electrical connection.
2. Turn the switch anticlockwise through
about 60, then remove.
The latter operation is facilitated if a wrench
is used on the hexagonal section (1) in the
figure.
Refitting
Fit a new switch complete w i t h bush (2) and
spacer ( 3 ) , into seat (4) as described below;
- keep the brake pedal pressed d o w n , thenn
fit a new switch into the correct position on
the bracket ( 4 ) ;
- turn the switch through 60 clockwise u n til the end of its travel, A click should be
heard as the detent tooth (5) engages in
seat ( 6 ) .
Adjustment
- Release the brake pedal to its rest position.
Pull up further until the switch takes up p o sition automatically in relation to bush ( 2 ) ;
- press the pedal in order to remove service
spacer (3) used as protection during adjustment.
NOTE
REMOVING-REFITTING
LIGHTS SWITCH
REVERSING
3. To replace the switch, disconnect c o n nector indicated and unscrew the switch
from the gearbox taking care to prevent oil
emerging.
NOTE
Copyright
Fiat Auto
operations
57
Electrical equipment
Marea-Marea Weekend
Various devices
55.
REMOVING-REFITTING CIGAR LIGHTER
1. Open access hatch to the cigar lighter and
remove the cigar lighter.
2. Fit tool 1876044000 into the base of the
cigar lighter and pull out a little way w i t h out turning.
3. Disconnect connector to release the cigar
lighter base and remove.
NOTE
operations
REMOVING-REFITTING
HORNS
- Remove the right front light cluster as described previously.
4. Work from the space left by the light cluster to disconnect connectors (A) of the
low tone horn and (B) of the high tone
horn.
Unscrew screw (C) and remove the l o w
tone horn; unscrew screw (D) and remove the high tone horn.
NOTE
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Electrical equipment
Various devices
55.
R E M O V I N G - R E F I T T I N G DOOR
MIRROR
1. Gently detach the mirror fastening m o u l d ing by undoing the retaining tabs.
2. Disconnect electrical connection (A) then
remove the moulding.
3. Release the rubber protection ( A ) .
4. Unscrew the bolts fastening the mirror to
the body.
5. Remove the door mirror together w i t h
plastic moulding.
NOTE
Copyright
Fiat Auto
in re-
59
Electrical equipment
Marea-Marea Weekend
Various devices
55.
R E M O V I N G - R E F I T T I N G RADIATOR FAN
The instructions given here are intended as a guide and may not apply if the version or specification is
not as shown in this case.
1. Place the vehicle on a lift, disconnect the
negative lead from battery, then remove
the air shroud.
2. Unscrew the upper fan retaining bolts and
the connections s h o w n .
3. Raise the vehicle and remove the lower
sound-proofed guard from the vehicle.
4. Unscrew the lower fan retaining bolts.
5. Disconnect the fan from the vehicle.
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Electrical equipment
Car radio
55.
A D 185 M R A D I O - C A S S E T T E P L A Y E R
The vehicle is fitted as standard w i t h a radio system, which consists of the following main components:
- A D 185 M radio-cassette player (non-removable) located in the central part of the instrument facia.
The FIAT front panel blends in with the facia styling;
- t w o speakers located on the inner front door panels;
- stylus-type aerial located on the front central part of the roof.
61
Electrical equipment
Marea-Marea Weekend
Car radio
55.
Rear view of radio
F= Safety fuse
SEAT FOR CONNECTOR B
Connection
Connection
Right speaker
Lighting
Right speaker
Power supply ( + 3 0 )
Left speaker
Earth
Left speaker
mentioned
+15
conneted.
+30
49
50
51
52
IE,
1 1 1
DTJ
10
9 10
UJi n n i
22
4.
22.
48.
49.
62
Junction unit
Left hand facia earth
Radio with clock
Left front loudspeaker (tweeter)
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506.763/01
Electrical equipment
Marea-Marea Weekend
Car radio
55.
OPERATION OF AD 185 M M O D E L RADIO
VOLUME ADJUSTMENT
TURNING ON RADIO
Raise volume
Lower volume
TONE A D J U S T M E N T
()
(O)
BALANCE A D J U S T M E N T
Copyright
Fiat Auto
63
Electrical equipment
Marea-Marea Weekend
Car radio
55.
F R E Q U E N C Y RANGE S E L E C T I O N
NOTE
L W = Long wave
M W = Medium wave
F M * frequency modulation
F M - R D S Split into three sub-bands
identified as RDS I, RDS II,
RDS III for stations broadcasting in RDS.
=
Occurs automatically for each frequency range tuned when the radio is turned on or w h e n the frequency
range changes.
A U T O M A T I C TUNING S E A R C H
The search sensitivity increases during the 2nd and 3rd exploration of the entire frequency range. The code
DX appears on the display during the third exploration.
To select maximum search sensitivity immediately, hold one of the above t w o keys d o w n until the code
DX appears on the display.
Rvl
U
64
Do not hold the key down too long because the manual tuning search would be selected in the
L W, MW or FM ranges.
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Electrical equipment
Car radio
55.
TUNING - MANUAL SEARCH
Hold one of the keys d o w n until the flashing word " M A N '
appears on the display
(**) Give short presses to change frequency gradually in steps. Hold the key down for longer to change
frequency quickly.
NOTE
bands.
After 60 seconds, if one of the keys shown below and identified by numbers 1 to 6 is pressed, automatic
tuning mode is selected and the flashing word " M A N " disappears from the display.
If one of the five keys is pressed, the radio tunes to the station stored for the relevant key.
NOTE
range is selected,
from manual to
automatic.
MANUAL S T O R A G E OF A S T A T I O N
The current station can be saved within the selected frequency range by means of one of the five n u m bered keys (lower figure). Press the key until the station can be heard again and the key number appears
on the display.
The station is still stored even when the power supply to the radio is cut off.
Copyright
Fiat Auto
65
Electrical equipment
Marea-Marea Weekend
Car radio
55.
L I S T E N I N G TO A S T O R E D STATION
P4F066L01
A U T O M A T I C S T O R A G E OF 5 S T A T I O N S IN T H E F M - R D S BAND ( A U T O S T O R E )
In this way, up to five stations can be saved for each of the three
FMRDSI, FMRDSII and FMRDSIII bands.
Proceed as follows:
- Press BAND key to select the required band.
- Hold the BAND key down until the sound goes off and the w o r d ing "AST" appears on the display.
Keys numbered 1 to 5 (see lower figure on previous page) automatically store stations w i t h a strong signal at the time the band is selected.
Up to t w o explorations are carried out throughout the entire frequency range w i t h increasing search
sensitivity. This operation is completed w h e n the sound is reactivated and the w o r d i n g AST disappears.
The radio is tuned to the station stored on key 1.
TP function (Traffic Program)
Some stations belonging to RDSI, RDSII and RDSIII bands broadcast information on traffic information.
using the TP (Traffic Program) function it is possible to:
a) search for only RDS stations broadcasting traffic information;
b) receive traffic information even when playing a cassette;
c) receive traffic information at a minimum pre-set volume even when the radio volume is set to zero.
NOTE
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Marea-Marea Weekend
Electrical equipment
Car radio
55.
Point a)
- Select a RDSI, RDSII or RDSIII band as described previously;
- press the "TP" key to display the code "TP".
If the first station is not able to provide traffic information, the radio
will automatically tune to the closest station with traffic information.
P4F067L01
Press tuning keys (A) to search for other stations providing the service.
To store stations w i t h the "TP" function active, carry out storage procedure (see paragraph on "Storing a
station").
As an alternative to manual storage, the station will be stored automatically if the " B A N D " key is held
d o w n until the sound goes off (see paragraph "Automatic storage within FM-RDS band - Autostore")
Point b)
If traffic information is required, tune into an RDS TP station before inserting a cassette. If the station
broadcasts traffice information while the cassette is being played, the tape is temporarily cut out and
playing resumes automatically when the traffic news is over
Point c)
Even when not listening to the radio, it is possible to receive traffic information. After tuning to an RDS
TP station and turning the volume to zero, any traffic news broadcast will be played at a minimum preset
level.
do not broadcast
traffic information
is
CASSETTE
PLAYER
P4F067L02
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Electrical equipment
Marea-Marea Weekend
Car radio
55.
Push the cassette in the slot until it clicks into
place. If the radio is on, the tape begins to play
automatically and the word "TAPE" appears
on the display.
If the radio is turned off while the tape is playing and then turned back on, the tape automatically begins
to play from the point where it left off.
F A S T FORWARDING T H E
CASSETTE TAPE
rtruuoLi/j
rtruuowu
To stop the cassette tape playing or rewinding, lightly press the key next to the key pressed previously.
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Electrical equipment
Car radio
55.
AUTOREVERSE FUNCTION
When the tape ends, the cassette automatically changes sides (Autoreverse).
The side of the cassette being played is
shown on the display.
To change sides, press the keys shown in the
figure lightly until a click is heard.
EQUALISATION
Cassette player equalisation is selected automatically when a chrome tape is played ( C r 0 2 ) .
CLOCK FUNCTION
The clock function displays hours and minutes. A colon beteween the hours and minutes flashes once a
second on the display. The clock is permanently displayed when the radio is off.
Display modes
When the radio is on, t w o display modes are possible as follows:
M o d e l (Ml)
The clock is displayed instead of the radio messages (clock function priority). When the radio is turned
on without a cassette in the player or a radio station is selected or a cassette is inserted w i t h the radio o n ,
the relevant message is displayed for about 10 seconds and then the clock appears again.
Mode 2 ( M 2 )
Radio function messages are displayed instead of the clock (radio function priority).
When the radio is turned on, this automatically selects the mode activated before it was turned off.
Copyright
Fiat Auto
69
Electrical equipment
Marea-Marea Weekend
Car radio
55.
Display mode selection
!u
wu O
O O'O O
I c Q U'O u
Proceed as follows:
- hold key (6) d o w n until the colon between the hours and minutes ceases to flash and the code " M 1 "
or " M 2 " appears according to the display mode selected;
- press key (1)
- give another short press to key (6) to confirm the selection. The colon between the hours and minutes begins to flash again the the code " M 1 " or " M 2 " disappears.
Setting the exact time
M ;8888
P'OOo
r 't c-, OOG-Q
I
When keys (2-3-4-5) are pressed briefly, the hours and minutes are increased/decreased by one unit.
Hold the keys down for longer to change the hour/minute display more quickly.
Once the exact hour has been set, press key (6) again. The time begins from 0 seconds and it is therefore
possible to set the clock exactly. The colon between the hours and minutes begins to flash again and the
code " M 1 " or " M 2 " disappears.
Changing time/frequency indication priority
Press key (6) briefly to switch between the clock and radio function message display for 10 seconds. After this, the display mode with priority automatically reappears.
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Car radio
55.
Power cut-off
If the power supply to the radio is cut (even only for a f e w minutes), the display shows the flashing
numbers "00 : 0 0 " with a fixed colon to indicate that the clock requires resetting.
D I S P L A Y INFORMATION
9
P4F071L01
1.
2.
3.
4.
5.
C A R E AND MAINTENANCE
Never expose cassettes to heat or direct sunlight and always replace in their cases after use. It is advisable to use good quality cassettes no more than C-90 in length to ensure excellent playing quality at all
times.
Clean the panel only w i t h a soft, antistatic cloth. Cleaning and polishing products could damage the
surface.
Dirt on the playing head due to the tapes could cause a reduction in treble tone with time during playing. It is therefore advisable to clean the playing head at intervals using an appropriate non-abrasive
head cleaner.
Copyright
Fiat Auto
71
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
AD 185 H RADIO-CASSETTE PLAYER
The vehicle may be equipped with an optional sound system w h i c h consists of the following main c o m ponents:
- radio-cassette player (non-removable) A D 185 H fitted in place of the original system in the middle
of the facia. The FIAT personalised front panel blends in fully with the facia styling;
- six speakers w i t h t w o located at the sides on the top of the facia, another t w o positioned on the interior front door panels as for the previous system, and the last t w o positioned at the sides of the parcel
rack;
- stylus-type aerial positioned on the front central part of the roof;
- additional set of main controls on the steering wheel (option).
- possibility of connection to CD player, if fitted.
25
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
72
10
26
21 22 23 24
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Marea-Marea
Electrical equipment
Weekend
Car radio
55.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
v
Station no. 4 preselection key - CD no. 4 selection - adjustment of minutes in increasing order - entry of fourth anti-theft code figure
Station no. 5 preselection key - CD no. 5 selection - time/ radio, cassette or CD function display priority selection
Station no. 6 preselection key / CD no. 6 selection - time/radio, cassette or CD function display
priority selection
Radio, cassette, CD function selection key
Key for automatic or manual search in decreasing order of station frequency - rewind cassette tape select previous CD track
Key for automatic or manual search of stations in increasing order of frequency - cassette fast forward - select next CD track
Key for selection of RDS - automatic station storage
Key for selection of FM radio band - selecting automatic or manual search mode for stations - random CD track play
Key for selection of Medium Wave / Long Wave radio band - select automatic / manual station
search mode - replay CD
Key for selection of Traffic Program function - select anti-theft mode with safety code - replay CD
track
Closure point for cassette slot cover
Display
15 18 20
Connection
NC
NC
11
3l
5l 7l
NC
2l
4l
6l 8l
Ignition power(15)
11
3l
5l 7l
NC
Lighting
2l
4l
6l 8l
Power supply ( + 3 0 )
F = 10A
F= Safety fuse
SEAT OF CONNECTOR C
S E A T OF C O N N E C T O R B
1
Copyright
Connection
Connection
Fiat Auto
8-9
Connection of controls
on steering wheel
13
CD data input
14
NC
15
CD earth
16
+ Power supply C D
17
+ Service
18
CD AF earth
19
Left CD channel
20
Right CD channel
73
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
Wiring diagram
+15
+30
E3
49
51
50
LJ
52
IL
1 11
8
LU
10
m m
4678
22
87654321
BBBBBBB] L Q J
89
IS
248
53
4.
22.
48.
49.
50.
Junction unit
Left hand facia earth
Radio with clock
Left front loudspeaker (tweeter)
Right front speaker (tweeter)
54
51.
52.
53.
54.
248.
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no.
506.763/01
Marea-Marea
Electrical equipment
Weekend
Car radio
55.
OPERATING D E S C R I P T I O N FOR RADIO M O D E L AD 185 H
TURNING ON T H E RADIO
Press the ON key (23) once : the radio comes
on. If turned on w i t h the engine off, the radio
goes off automatically after about 2 0 m i n utes.
Turning on/off when the engine is started/
turned off
The radio is equipped with an ignition system
w h i c h , when active, allows the radio to be
turned on/off when the engine is started/
turned off.
Proceed as follows to activate the system:
- keey the " M U T E " key (26) pressed d o w n
w i t h the radio off until the w o r d i n g " I G N
O N " appears on the display, then turn on
the radio by means of the " O N " key ( 2 3 ) .
NOTE
Copyright
Fiat Auto
75
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
NOTE
If functions cannot be selected (e.g. cassette player when no cassette is insesrted, CD when no
CD is present) they are automatically
excluded.
PAUSE FUNCTION
If another function is selected while playing a cassette or compact disc (e.g. the Radio), playing is interrupted. When the system is turned back to "Cassette" or "Compact Disc" mode, playing continues from
the point at which it was broken off. If another function is selected while listening to the radio, the last
station selected is tuned in when radio mode is selected again.
VOLUME ADJUSTMENT
TONE ADJUSTMENT
NOTE
The "BASS"
and "TREB"
are between - 6 and + 6.
settings
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no.
506.763/01
Marea-Marea
Electrical equipment
Weekend
Car radio
55.
BALANCE A D J U S T M E N T (betwen right
and left speakers)
NOTE
n
u
settings
F A D E R A D J U S T M E N T (balance between
front and rear speakers)
Copyright
Fiat Auto
77
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
- press the "AUDIO +" key (21) for a louder
sound from the rear speakers or the "AUDIO -" key (19) for a louder sound from the
front speakers. Fader levels (F = front; R =
rear) appear on the display.
- give the keys short presses to achieve a
gradual change in steps;
- hold down the keys for longer for a fast
change;
IMOTE
LOUDNESS FUNCTION
- Press "LOUD" key (18) to activate/de-activate this function, which emphasises the
bass tone during playing. If the function is
activae, the led beneath the key comes on
and the wording "LOUD" appears on the
display.
P4F078L02
MUTE FUNCTION
- Press the "MUTE" key (26) to activate/de-activate this function. If the function is active, the radio does not send any
more signals to the speakers the wording
"MUTE" appears on the display.
NOTE
P4F07SL03
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Marea-Marea
Electrical equipment
Weekend
Car radio
55.
RADIO FUNCTION
A
NOTE
Reception condtions alter constantly during driving. Reception may be disturbed by the presence of mountains, buildings or bridges, particularly when the car is a long way from the station broadcaster.
When the "RADIO"
ceived.
funtion is active, the last station tuned into before turning the unit off is reFunction selection
The radio comes on as soon as the unit is turned
on. To select the Radio function while listening
to a cassette or compact disc, press the
" M O D E " key (8) repeatedly until the w o r d
" R A D I O " appears on the display.
Band selection
Press the " F M " key (12) or " A M " key (11)
briefly to select the required reception band (a
led comes on beneath the selected key).
Once the " A M " key (11) has been pressed,
" M W " or " L W " stations are selected.
To select RDS (Radio Data System) stations,
see the description given on the f o l l o w i n g page
(RDC FUNCTION).
P4F079L01
Manual tuning
Used to select stations in the selected band manually.
- Select band: " F M " , " M W " or "LW".
P4F079L02
- hold " F M " key (12) d o w n (if FM band has been selected) or the " A M key (11) (if M W o r LW band
has been selected) until the wording " M A N " appears on the display.
- press "MODE + " key (9) or "MODE - " key (7) to select the required station;
- frequency changes gradually in steps when the key is pressed briefly;
- frequency changes quickly if the key is pressed d o w n for longer.
bands.
Automatic tuning
Allows stations in the selected band to be searched for automatically.
- Select the band: " R D S 1 " , "RDS2", " F M " , " M W " or "LW";
- press the "MODE + " key (9) or the " M O D E - " key ( 7 ) ;
Search sensitivity increases once the search has gone through the full frequency range twice (the w o r d ing "DX" appears on the display).
NOTE
The station search carried out using keys (7) and (9) may also be activated using the corresponding keys on the steering wheel (where
present).
Copyright
Fiat Auto
79
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
Storing last station selected
The last station selected for each reception band is automatically stored in the memory and then selected
when the radio is turned on or the reception band is changed.
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RDS1
506.763/01
Marea-Marea
Weekend
Electrical equipment
Car radio
55.
IMOTE
Point a)
TP
Copyright
Fiat Auto
RDS =
81
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
Point b)
To receive traffic information, before inserting a cassette or compact disc, tune to a RDS TP station. If
traffic information is broadcast by the station while a cassette or compact disc is being played, the cassette or compact disc is temporarily stopped and resumes playing again automatically when the message is over.
Point c)
Even while not listening the radio, it is possible to receive traffic information. After tuning to a TP RDS
station and turning the volume right d o w n , if the same station broadcasts traffic information this will be
played at a preset minimum volume.
do not broadcast
traffic information
NOTE
v
TP
RDS =
If no level is preset or volume is set to a m i n i mum level of 5, level 5 is automatically selected.
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Marea-Marea
Weekend
Electrical equipment
Car radio
55.
EON function (Enhanced Other Network)
In certain countries, several stations broadcasting traffic information are grouped together in circuits.
In this case, broadcast of an RDS station program will be temporarily interrupted to receive traffic information whenever such information is broadcast from one of the stations in the circuit.
To exclude the EON function, briefly press "TP" key (10) (the led beneath the key goes off).
Scanning stored stations (SCAN function)
This function is used to tune cyclically (for a period of 10 seconds each) to all possible stations stored
within the relevant band.
When a station is tuned during the scan, a led comes on beneath the appropriate storage key and the key
number appears on the display.
Stations with a very weak signal are not played.
The search direction may be reversed as required by pressing keys " M O D E + " ( 9 ) or
"MODE -" (7).
To interrupt the scan, press " S C A N " key (16)
again : the led beneath the key goes off and
the station present at that moment can be
heard again.
Stereo broadcasts
When the station broadcasts a program in stereo, the symbol indicated by the arrow in the lower figure
appears on the display.
If the incoming signal is weak, the broadcast is automatically switched from Stereo to M o n o .
Copyright
Fiat Auto
83
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
CASSETTE PLAYER
The radio is equipped with a cassette player,
with an "Autoreverse" function which allows
both sides of a tape to be played without
turning the cassette over.
Playing a cassette
- Turn on the radio by pressing ON (23);
NOTE
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Weekend
Electrical equipment
Car radio
55.
to play a cassette already inserted previously while listening to the radio or a c o m pact disc, press " M O D E " key ( 8 ) repeatedly until the wording "TAPE" appears on the
display.
Changing sides
When the tape has played, the cassette
changes sides automatically (Autoreverse).
The side of the cassette to be played is shown
on the display.
The symbol indicated by the right hand arrow
represents the upper side, whereas the symbol indicated by the left hand arrow indicates
the lower side.
Press key (24) (Reverse) to change sides before the end of the tape.
Copyright
Fiat Auto
85
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
Fast forward/rewind
Press key " M O D E + " (9) or key " M O D E - "
(7) t o fast forward or rewind the cassette
tape.
Press the key used previously to stop t h e
tape.
Press these keys several times t o scan back and forward through the tracks (one track for each press).
To interrupt the search, press the last key selected lightly ( M O D E + o M O D E - ) . Playing will then begin
from this point.
To exit MSS mode, press key " M S S " (16): the led goes off beneath the key and the w o r d i n g " M S S " appears on the display.
The music search system may not work properly with the following
86
types of tape:
trapes recorded at l o w levels (e.g. very weak sound and poor recording quality);
tapes w i t h conversations;
tapes with blank sections lasting less than 3 seconds;
tapes with long periods of silence in the recordings;
tapes without blank sections (e.g. live recordings);
tapes w i t h a lot of background noise in blank sections.
Publication
no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Car radio
55.
Dolby B function
Press key (17) t o activate/de-activate the
Dolby B function (noise reduction device
produced under licence from the " D o l b y Laboratories Licensing Corporation") ( * ) .
When the Dolby function is active, a led
comes on beneath the key and t h e relevant
symbol appears on the display ( s h o w n in the
lower left figure alongside).
(*) Dolby and the symbol (showing two Ds
side by side) are registered trademarks of
the above company.
Ejecting a cassette
- Press key (22) briefly to open the cassette
slot flap;
- press key (22) a second time t o eject the
tape.
NOTE
N OTE
when
P4F087L03
Copyright
Fiat Auto
87
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
COMPACT D I S C PLAYER FUNCTION
The AD185H radio can be fitted with a compact disc (CD) player
The Fiat accessory range includes a kit containing a CD player, multipolar connection lead and a mounting bracket.
The CD player is equipped w i t h a loader able to hold up to 6 Compact Discs.
incorrectly,
it
Inserting C D holder
NOTE
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Electrical equipment
Car radio
55.
<5>
4
1
\ > =\
Proceed as follows:
- slide flap A to the right as s h o w n in the f i g ure until it locks;
- press eject key (arrowed) on the CD player.
P4F089L03
CD PLAYER OPERATION
To play CDs inserted previously, press
" M O D E " key (8) repeatedly until the w o r d ing " C D " appears on the display.
If this function is selected after inserting the
loader, the wording "CD CHECK" appears as
connections and loader contents are examined.
The word " C D " appears on the display t o gether with the track number (example " T 0 3 "
= third track), playing time (example " 0 3 : 1 4 "
= 3 minutes and 14 seconds) and the CD
number (example " 4 " ) .
Copyright
Fiat Auto
89
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
Error messages
If the loader has not been introduced or not inserted correctly into the CD player, the word " M A G A ZINE" appears on the display.
If the loader does not contain any CDs. The wording "NO CD" appears on the display.
If a CD is damaged or incorrectly inserted into the loader, the wording "SURFACE" appears on the display.
If the connection with the CD player is broken, the wording " C D " appears on the display.
The wording " M E C H A N I C " appears on the display in the case of a mechanical fault in the CD player.
If the CD player overheats, the wording "TOO HOT" appears on the display
Disc selection
Press one of the keys ( 1 ) , (2), ( 3 ) , ( 4 ) , (5)
and ( 6 ) , t o select the compact disc t o be
played from among those present in the
holder. The selected CD number appears on
the display.
// a CD is present in the loader, the
led beneath the key corresponding
to the relevant CD stays on. Otherwise it goes off.
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Car radio
55.
N OTE
Copyright
Fiat Auto
91
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
CD repeat ( R E P E A T function)
Press key "RPT" (11) (a led beneath the key
comes on) to listen t o the last CD again.
NOTE
Once all the tracks have been played, another CD is selected and so on. Once all CDs have been played,
random playing is resumed as before.
NOTE
- press key "RND" (12) again (a led beneath the key goes off) to exit from "Random play" mode.
Never expose CDs to heat or direct sunlight. Always replace in their cases after use.
CDs must always be kept away from dust and the CD surface must not be touched by hand.
Avoid scratches because these will cause breaks in the sound.
If CD surfaces are dirty, use a soft cloth to clean from the centre outward. Never insert damaged
or deformed CDs in the loader.
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Car radio
55.
C L O C K FUNCTION
This function can be used to show hours and minutes on the display.
A colon between the hours and minutes flashes once a second.
When the radio is on, if the clock appears on the display, the led beneath key (15) comes on during time
adjustment and display mode selection.
The clock is always displayed when the radio is turned off.
Display modes
When the radio is off, t w o display modes are available as follows:
a) M o d e l (M1)
The clock is displayed instead of main function messages for the Radio (reception frequency). Cassette
player (TAPE) or Compact Disc (track number and playing time).
When the radio is turned on or a function is selected (Radio, Cassette or Compact Disc, function messages are displayed for about 10 seconds before the clock reappears.
a) Mode 2 (M2)
Radio, Cassette or Compact Disc messages
are displayed instead of the clock.
When the radio is turned on, the mode present before it was turned off are automatically
reselected.
Copyright
Fiat Auto
93
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
NOTE
Briefly press the keys to increase/reduce hours and minutes by one unit.
Press
for
longer
to
change
hours/minutes
display quickly.
Hour/frequency priority s w i t c h
Briefly press key (15) to switch between t h e
clock display and the Radio, Cassette or
Compact Disc function display for a period of
10 seconds. After this, the selected default
display mode reappears.
Power cut
n p nu n
94
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no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Car radio
55.
ANTI-THEFT PROTECTION
SECURITY
C O D I C E Dl S I C U R E Z Z A
The radio is equipped with an anti-theft system consisting of a secret four-figure code.
The protection system renders the system u n usable once it has been removed from the facia in the case of theft.
Secret code
The secret four-figure code is indicated on
the "Security Code card" provided together
with the "Fiat Code card" for the vehicle. The
secret code must be kept in a safe place (e.g.
together with the car documents), but not on
board the car.
Entering the secret code
Radio code activation is necessary:
a) when the vehicle is delivered to the customer by the dealer;
b) whenever the battery supply is c u t off.
code
Code
Copyright
Fiat Auto
95
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
Re-entering the code
Proceed as follows:
- Turn on the radio by pressing the " O N " key
(23). The wording "SAFE" appears for
about 3 seconds on the display;
- enter the code number by following the
procedure adopted during initial code e n try;
- confirm the code number by holding d o w n
the key " T P " (10) until the wording
"SAFE" appears on the display;
- after about 3 seconds, the radio begins to
work and the code is activated.
If an incorrect code is entered, the
radio stays off and the wording
"SAFE" appears permanently on the
display.
Number of unsuccessful
attempts (on display)
Waiting
time (about)
1
2
3
4
5
6
7
21 sec.
1.5 min.
5.5 min.
22 min.
1.5 ore
6 hours
24 hours
24 hours
As a further deterrent against theft, the system counters repeated attempts to enter the
code by making the waiting time between
one attempt and another longer and longer.
During these intervals, the radio function is
locked until the wording "SAFE" disappears
from the display and the number of incorrect
attempts appears in its place. The table
shown alongside indicates the waiting time
between individual attempts
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Marea-Marea
Electrical equipment
Weekend
Car radio
55.
STEERING WHEEL CONTROLS
Available as options for radio A D 185H
Left-hand side + and -: volume increase or decrease
MUTE: mute function
Right side + and -: broadcast station search
MODE: select Radio, Cassette, CD function
R I R 2
I M U T E I
"11
RADIO
R3
R4 R5
I
I M O D E
A AA
ft
T -
R1 - 390(1
R2-4700
R3 - 1 5 Kn
R4 - 3.9 Kn
T E C H N I C A L DATA
FRONT S P E A K E R S P E C I F I C A T I O N S
TWEETER
ON DOOR
HLX
Passband
80-15000 Hz
100-15000 Hz
2 5 0 0 - 2 0 0 0 0 Hz
8 0 1 3 Hz
10016Hz
2 5 0 0 4 0 0 Hz
420% Q
3 20% Q
8 20% Q
94007% T
84007% T
106007% T
Resonance frequency
Nominal impedance
Induction
SX - ELX
18 W
12 W
MAREA
MAREA Weekend
80-18000 Hz
115-20000 Hz
8 0 1 3 Hz
1 1 5 2 2 Hz
420% Q
820% Q
30 W
REAR S P E A K E R S P E C I F I C A T I O N S
Passband
Resonance frequency
Nominal impedance
Induction
Power RMS (DIN 4 5 5 7 3 )
Copyright
Fiat Auto
84007% T
97007% T
18 W
12 W
97
Electrical equipment
Car radio
55.
3.
4.
10.
10A.
11.
22.
42.
48.
49.
98
Marea-Marea
Weekend
50.
51.
52.
53.
54.
248.
COMPONENTS
Publication
no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Car radio
55.
REMOVING RADIO M O D E L AD 185 M
Tool 1860897000 used t o remove the radio is made up of a left hand part and a
right hand part. These are marked R and L
respectively.
NOTE
Copyright
Fiat Auto
99
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
1. Grasp both parts of tool 1860897000 and
remove the radio partly, then disengage
both parts of the above tool from the radio.
Do NOT remove the radio by pulling
from the cassette slot but only using
both parts of tool 1860897000 and
following the procedure
described
previously.
2. Protect the instrument facia area beneath
the radio with a cloth as shown in the f i g ure.
3. Remove the radio completely: disconnect
connection D of the aerial lead and c o n nectors A and B by proceeding as follows:
push connectors A and B toward the radio
and press retaining clip C indicated in the
box. Then remove the radio from the car.
If the rubber terminal (1) of locating pin
(2) remains inside the facia beam, remove
and fit back on the pin.
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Car radio
R E F I T T I N G CAR RADIO
R E P L A C I N G CAR RADIO
3. If the radio is faulty or the fuse s h o w n in
the figure blows, DO NOT ATTEMPT TO
REPAIR OR REPLACE, but proceed as
follows.
anSn
Copyright
Fiat Auto
101
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
jflllOITI
DIGITAL
STEREO
EJECT
3
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Weekend
Electrical equipment
Car radio
55.
Copyright
Fiat Auto
103
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
I n
REMOVING-REFITTING SPEAKERS
Speakers on facia
- Proceed as shown to remove the protective
grille from the instrument facia. Prise up by
inserting a screwdriver at the point indicated by the arrow.
- Disconnect electrical connection and remove the speaker from the vehicle.
NOTE
operations
P4F104L03
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Electrical equipment
Car radio
55.
Copyright
Fiat
Auto
operations
105
Marea
Electrical equipment
Car radio
55.
Rear speakers on parcel rack
- Open the boot lid.
- Unscrew nut for the relevant speaker.
NOTE
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operations
no.
506.763/02
Marea
Weekend
Electrical equipment
Car radio
55.
Rear speakers on pillars
- Use a screwdriver to prise up the panel
covering the rear speaker.
the
rear
IMOTE
Copyright
Fiat Auto
operations
107
Electrical equipment
Marea-Marea
Weekend
Car radio
55.
REMOVING-REFITTING AERIAL LEAD
CAR RADIO
- Remove the radio as described on the previous pages.
- Remove the passenger side glove compartment as described in Group 70 during facia
trim removal.
- Remove the right front pillar trim, sun
blinds, right front passenger grab handle
and sliding roof opening seal as described
in Group 70.
- Remove the front courtesy light as d e scribed in the relevant paragraph.
- Working within the compartment left free
by the glove compartment, disconnect
electrical connection (A) of the aerial lead
from the retaining clip.
- Working inside the courtesy light compartment, prise up aerial lead terminal cover
(A).
Unscrew nut (B) and remove the aerial lead
terminal.
NOTE
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506.763/01
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Electrical equipment
Fiat CODE
55.
INTRODUCTION
The Fiat CODE system consists of:
- three electronic keys containing a secret code;;
- one FIAT CODE control unit;
- special antenna on the ignition switch;
- injection ECU w i t h one serial line communicating with the FIAT CODE control unit ( ) ;
- card w i t h secret code for emergency procedure.
Fiat CODE ECU functions are as follows:
- recognise insertion and turning of key in ignition;
- emit an electromagnetic field to power and activate the key TRANSPONDER (code emitter);
- receive secret code issued by key;
- store up to 8 keys using the same number of secret codes;
- manage code checking/processing;
- control a single-wire bidirectional serial link w i t h the injection ECU ( ) ;
- control a test warning light (LED) located on the dashboard.
LOCATION OF S Y S T E M C O M P O N E N T S ON V E H I C L E
P4F24AL01
1.
2.
3.
4.
()
Copyright
engines)
On the 1910 TD version, the Fiat CODE system is not connected to the injection
unit but to a special electronic device in the engine stop solendoid valve.
Fiat Auto
control
109
Electrical equipment
Marea-Marea
Weekend
Fiat CODE
55.
Electronic keys
The key grip contains a Transponder. This electronic device (NOT supplied by the battery) contains a
code and transmits information through the air.
When the key is inserted in the ignition and the Transponder is energised by radio waves received via the
aerial, the Transponder responds by emitting a code.
Three keys are provided with the vehicle:
- n 1 electronic key (MASTER KEY) in bordeaux red;
- n.2 electronic keys (MAIN KEYS) in blue
Each key contains a Transponder with a secret code. The RED contains the Master Code and must be
used S O L E L Y for the key memorisation process.
The MASTER key code is the Master Code saved in the electronic injection control unit and electronic
key E C U . This represents an insoluble link between the electronic injection control unit and the MASTER key. If the MASTER key is lost or damaged, no further new keys may be saved. If the electronic key
ECU becomes faulty and the MASTER key is not available, the electronic key and electronic injection
ECUs must be replaced.
is advised
instructions
SCRUPOLOUSLY:
- The MASTER
key must be kept in a safe place (not in car);
- The MASTER
key must be used only for saving new keys;
- the card with the secret code must not be left in the car in case the car is stolen, but must nevertheless be available for the emergency start-up
procedure.
- The MASTER
key is proof of vehicle ownership. If the car is sold, the MASTER
key and the
Code Card must be transferred to the new owner.
1.
2.
3.
4.
5.
MASTER
key
(Bordeaux)
Main key (blue)
Main key with remote control
Transponder
Code card with secret code
NOTE
110
instead
(blue)
with remote
control.
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Electrical equipment
Fiat CODE
55.
Code Card
This card contains:
- electronic Code; a 5-figure code for the emergency start-up using a Fiat Lancia Tester or accelerator
pedal.
- mechanical Code: code used to copy the milling on the key if necessary
The other side of the card contains two spaces for labels bearing car alarm remote control codes (passwords) (see box indicated under "Alarms").
F I A T C O D E warning light
The CODE warning light is located on the instrument panel and controled by the Fiat
CODE-centrol unit. The light may indicate
one of the following conditions when the ignition key is turned to MAR:
- ON briefly (0.7s) and then O F F : key
recognised, system operating correctly;
- F L A S H I N G : neither injection control unit
or Fiat C O D E have codes stored (blank
system). Refer to paragraph entitled "Manual fault diagnosis" in the "Fiat C O D E "
publication, print no. 506.656 for information on the different flashing modes;
CODE
P4F26AL01
- ON: if the warning light comes on permanently with the ignition key turned to MAR,
one of the following anomalies is present:
For more information on the Fiat CODE system, refer to the "Fiat CODE"publication,
506.656, where the following points are explained:
- System
description
- Code storage
- System fault diagnosis
- Component
replacement
print no.
For convenience, see overleaf for a brief version of the C O D E S T O R A G E P R O C E D U R E and the
EMERGENCY START PROCEDURE.
Copyright
Fiat Auto
111
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Fiat CODE
55.
PROCEDURE FOR S T O R I N G C O D E S
ON A BLANK S Y S T E M
B Within 10 seconds:
Remove the MASTER key from the ignition and insert a main key in the ignition.
Turn the key to MAR. When the Fiat CODE
warning light goes off, turn the key to
STOP.
P4F27AL01
C Within 10 seconds:
Remove the key from the ignition, insert a
second main key in the ignition.
Turn the key to MAR. When the Fiat CODE
warning light goes off, turn the key to
STOP.
D Within 10 seconds:
Remove the key from the ignition, fit the
MASTER key in the ignition
Turn the key to MAR. As soon as the Fiat
CODE light goes off, return to STOP.
THE C O D E S ARE NOT S T O R E D IN T H E
F I A T C O D E CONTROL UNIT
P4F27AL02
E Enter any of the stored keys and turn t o MAR. The Fiat CODE warning light w i l l go off after 0.7 seconds.
Wait 2 seconds, if the Fiat CODE warning light stays off, the code storage procedure has been successful and the MASTER key code has been stored in the injection ECU.
If the warning light begins to flash again (1.6 Hz), the code storage procedure has not been carried
out properly.
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Electrical equipment
Fiat CODE
55.
EMERGENCY START-UP PROCEDURE
The emergency start-up procedure can be used to start the engine whenever the Fiat CODE system is not
working properly (FIAT CODE control unit faulty, keys unusable etc.). The emergency procedure can be activated only if the electronic injection control unit is in "prohibit engine management" mode. This procedure
may be carried out using a Fiat/Lancia tester or by means of the accelerator pedal. This operation is used to
start the engine and drive the vehicle to the nearest authorised workshop in order to repair the fault.
Emergency start-up using a Fiat/Lancia Tester
This procedure is activated by entering a 5-figure code (ELECTRONIC CODE) shown on the Code Card by
means of the Fiat Lancia Tester keypad.
After emergency start-up, the injection control unit returns to the start-up lock position when the key is
turned to STOP.
Emergency start-up by means of the accelerator pedal
(Procedure not used for the 1910 T D version).
This procedure involves operating the accelerator pedal in order to send an electronic code to the injection
control unit by means of a signal the unit reads from the throttle valve potentiometer (petrol versions) or the
accelerator pedal (2387 TD).
Carry out the following operations in order:
1. Read the 5-figure electronic code off the Code Card (Electronic Card).
2. Turn the key to MAR: press the accelerator pedal and hold d o w n . The injection system fault warning
light comes on for 4 seconds, then goes off briefly (150 ms) and comes on for a further 4 seconds.
3. When the warning light goes off, release the accelerator pedal
4. When the pedal is released, the warning light begins to flash (frequency of 0.8 Hz)
5. Once the light has flashed the first figure of the number on the Code Card, press the accelerator pedal
down and hold down.
6. The injection system warning light comes on again for 4 seconds. It then goes off t o indicate that the
first figure has been stored.
7. When the warning light goes off, release the accelerator pedal
8. When the pedal is released, the warning light begins to flash as described previously (point 4 ) .
9. After the light has flashed out the second figure of the number, press the accelerator pedal. The w a r n ing light comes on for 4 seconds to indicate that the second figure has been stored.
10. Repeat the procedure described under points 4, 5, 6 and 7 for the other Code Card figures
11. When the pedal is released after the last figure has been stored, the warning light flashes at twice the previous rate (1.6 Hz) to indicate that the code has been accepted. If the warning light stays on, the code
has been rejected.
If the code is accepted, start up the engine. Otherwise, turn the key to STOP and try to carry out the operation again.
P4F28AL01
The graph shows pedal operations and warning light flashes for one particular example: Electrionic Code 4
2 173.
NOTE
This procedure allows the engine to be started ONCE ONL Y, but it may be repeated an unlimited number of times.
Copyright
Fiat Auto
113
Electrical equipment
Marea-Marea Weekend
Fiat CODE
55.
FIAT C O D E WIRING D I A G R A M (Petrol version)
1370
+30
+15^
fe-2
140
E3
1581
31 - ; . - < ^
195
117471
LU
55A
11
13.
IT
160
237
1998
UJ
190
11
6
-3
-8
-Z
Ll
Ll
CODE
1
131
IL
55A
139
148
4.
6.
55A,
131.
139.
140.
148.
114
Junction unit
Instrument panel
Left front/engine lead connection
Fiat CODE electronic control uint
Injection system tester socket
Injection/ignition control unit (1370)
Earth for electronic injection
160.
190.
195.
199.
237.
Marea-Marea
Electrical equipment
Weekend
Fiat CODE
55.
F I A T C O D E WIRING DIAGRAM (TD versions)
| 1910 I
+30
+15
2387
200
E3
|387
lrl
87 30 85
86
139
..A
"7
42
271
266
]55
LTJ*
fp
11
EL
IT
55A
237
226
I 1910 I
148^
LTJ
229
mI L m i
4
I 1910 I
6 5
5-3
G-8
CODE
6-8
LE
1 3
131
mr i
LL
V
X
O
O
E
.
56
57
4.
6.
19.
55.
Junction unit
Instrument panel
Rear earth
Connection between left front/engine
leads
55A. Connection between left front/engine
leads
56. Fuel level gauge control unit
57. Inertia switch
VII-96
19
131.
139.
148.
199.
200.
226.
229.
237.
266.
115
Electrical equipment
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Rat COPE
55.
REMOVING-REFITTING
C O N T R O L UNIT
FIAT
CODE
REMOVING-REFITTING
AERIAL
FIAT
CODE
NOTE
116
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Electrical equipment
Fiat CODE
55.
R E P L A C I N G T H E TRANSPONDER
Use great care to ensure that the
Transponder does not break or become lost because it is a small component (carry out assembly on a
table)
1. Insert a small screwdriver into the key
hole and apply leverag;
2. Open the MASTER key: take care because it consists of two halves. The
Transponder is arrowed;
3. Use a small screwdriver or awl to remove the Transponder from the O L D
MASTER key hole.
4.5. Fit the Transponder of the OLD M A S TER key in the housing of the N E W
MASTER key. Position as shown and
take care not to damage the electrical
component;
117
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Fiat CODE
55.
If the MASTER
key is lost or its Transponder is broken or lost, the key must be replaced:
start-up.
key (e.g.
Transponder
It is absolutely prohibited to handle, replace or exchange key Transponders (except
placing the dowel kit and new keys and only for the MASTER key).
when re-
Adding a n e w key t o t h e k e y s p r o v i d e d w i t h t h e v e h i c l e
Adding a new key involves re-storage of all keys provided
used during this procedure are deleted from the memory.
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Alarm
55.
LOCATION OF ALARM S Y S T E M COMPONENTS
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Alarm
55.
INTRODUCTION
The V.A.S. (Vehicle Alarm System) radiofrequency alarm offers volumetric and perimeter type protection; in effect, it checks the state of the lids and doors and also checks for a moving object inside the
passenger compartment. In particular, it is capable of:
- adapting its operation to the regulations in force in various countries governing alarm systems;
- distinguishing between intermittent and permanent errors or faults;
- memorizing the number of times the alarm system has been activated;
- detecting faults and irregularities with the system connecting cables.
The alarm system comprises:
- a radiofrequency receiver, incorporated in the centre front courtesy light
- a radiofrequency remote control, integrated in the ignition key
- volumetric control sensors incorporated in the centre front courtesy light
- front and rear door and lid sensors;
- an alarm control unit, located in the left front wheel arch housing, which is integrated w i t h a self-supplied siren;
- a switch with an emergency key (ON - OFF), located near the junction unit, for deactivating the system.
From January 1998, the alarm systems fitted on vehicles destined for the U.K. w i l l not have an emergency key therefore the control unit will be constantly activated.
NOTE Compared with the infrared remote control, the radiofrequency remote control facilitates the operations of activation and programming because it has a greater operating range, is not directional and is not affected if the transparency of the glazed surfaces is poor.
ALARM SIREN
This is a compact type, self-supplied siren i n tegrated in the control unit.
The intensity of the siren sound depends on
the country where the vehicle is registered
(see "COUNTRY CODE P R O G R A M M I N G " )
NOTE
120
The siren can be excluded by pressing the button on the remote control for more than 4 seconds
when the alarm is switched on.
Print no.
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Weekend
Alarm
55.
RECEIVER
The radiofrequency receiver, incorporated in the centre front courtesy light, is an electronic device
which receives the signal emitted by the remote control and carries out the functions of opening and
closing the doors and activating the alarm control unit
Each receiver can be programmed with one or more remote controls memorizing the codes (however,
only the last 8 entered are retained)
There is a green or red LED (1) in the receiver incorporated in the centre front courtesy light w h i c h
comes on when the signal is received, whilst the button (2) allows the code to be programmed
When the receivers are fitted on the vehicle they contain a "UNIVERSAL" code which is useful for carrying
out tests at the end of the production line using a special remote control with a universal code.
When the vehicle is handed over to the Customer the receiver must be personalized, replacing the " U N I VERSALE" code with the code for the remote controls w h i c h come with the vehicle (see " P R O G R A M M I N G " on the pages w h i c h f o l l o w ) .
Receiver connector
1.
2.
3.
4.
5.
6.
7.
8.
Not connected
Serial line to the alarm control unit
Positive from battery ( + 3 0 )
Earth
Door unlocking
Door locking
Positive controlled by the ignition ( + 15)
Not connected
Remote
control
integrated in the
ignition key with
EA code;
Remote
control
integrated in the
ignition key w i t h
EC code;
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Alarm
55.
R E M O T E CONTROL
The remote control for the alarm system, incorporated in the ignition key (diagram at the side), is
an electronic device which sends the receiver a
suitable signal for operating the unlocking/locking of the doors and the activation/deactivation
of the alarm system.
Control buttonmando
Repeater LED
Access code label (password)
Transponder (for Fiat CODE - not visible)
N O T E Each key with remote control has a 4 digit password code label (3) for protection against unauthorized
programming (protected programming). The label should be removed by the Dealership when the vehicle is consigned and placed on the back of the code card.
If the labels are mislaid, this does not adversely affect the use of the alarm system, but it means that
n e w remote
controls
cannot be programmed
(see description on the pages which follow); if
necessary,replace the receiver in the centre front courtesy light and the keys (for the labels).
E M E R G E N C Y S W I T C H WITH K E Y
The key for the emergency circuit makes it possible to exclude the alarm system, w h e n necessary.
It is located at the side, under the dashboard and
is only accessible after the left lower cover has
been remoted (see diagram).
The emergency key can be placed in t w o positions, namely:
OFF
ON
From January 1998 the alarm systems fitted on vehicles destined for the United Kingdom will
not have an emergency key and therefore the control unit will be in a state of constant
activation.
LED
This red LED located in the centre of the dashboard on the panels w i t h the switches for the rear f o g
lamps, heated rear windscreen etc. has the function of signalling the state of the system and any irregularities (see "AUTODIAGNOSIS").
VOLUMETRIC SENSORS
Volumetric sensors allows additional surveillance by checking that there are no intrusions in the passenger compartment. They are incorporated in the centre front courtesy light and have the function of a
transmitter and a receiver.
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Alarm
55.
OPERATION
Switching on the alarm
The alarm is switched on by pressing the remote control button, with the key extracted from the ignition
(or in the OFF or PARK position); the fact that the alarm has been switched on is siganlled by the direction indicators coming on for about 2.5 seconds and a corresponding auditory signal (beep). The remote control has an operating range of about 10 metres.
Switching off the alarm
The alarm is switched off by pressing the remote control button; the fact that the alarm has been
switched off is signalled by t w o flashes of the direction indicators and t w o corresponding auditory signals (beeps)
The switching on or off of the alarm is also signalled by the LED and, only in countries where legally permitted, by visual and auditory signals, as indicated previously for the " I T A L I A N " operating mode.
Excluding the alarm
If the remote control batteries are run d o w n or the alarm system is faulty, it can be deactivated by turning
the emergency key to the OFF position.
This same key can be rotated to the OFF position if the vehicle is not going to be used for long periods
(more than three weeks).
To reactivate the system, turn the emergency key to the ON position again and check that it is in this position when the vehicle is handed over to the Customer.
For vehicles destined for the English market which do not have an emergency key, if the remote control
batteries are run d o w n and the alarm cannot be switched off, then it is necessary to wait until it is deactivated (i.e. after the siren cycles and the direction indicators have come on intermittently).
Surveillance
During surveillance the LED flashes at a frequency of 0.8 Hz and the alarm system controls:
- the doors and the front and rear lids
- the disconnection of the battery and/or the cutting of the cables
- the ignition switch against unauthorized attempts to start the engine;
- movements inside the passenger compartment (volumetric surveillance).
Alarm state
The alarm state is entered into when one of the surveillance sensors detects an irregular situation.
The alarm state involves the activation of the siren for a maximum of three 26 second cycles in addition
to the direction indicators coming on for a maximum of 4.7 minutes (only in countries where legislation
permits) if the cause of the alarm persists.
It is possible to escape the alarm system by pressing the remote control button (see chapter on " S w i t c h ing off the alarm") or, only in e m e r g e n c y c o n d i t i o n s if it i s not p o s s i b l e u s i n g t h e r e m o t e c o n trol c o n t r o l , by turning the emergency key to the OFF position.
N O T E The alarm condition
unit.
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Alarm
55.
2. With the ignition key in the ON position, turn the key in quick succession to the following positions:
OFF - ON - OFF.
Confirmation that the volumetric surveillance has been excluded is given by the LED coming on for 2
seconds.
The key can be returned to the ON position for a maximum of 30 seconds from the above mentioned manoeuvre, without re-enabling the volumetric surveillance; this function is useful, for
example, to allow the electric windows to be closed.
When the key is then turned to the ON position, for a period of more than 30 seconds, just as when the
alarm is turned on for the second time, the volumetric surveillance is re-enabled.
Auto switching on of alarm (only in Belgium and United Kingdom)
Vehicles w i t h alarms programmed for the Belgian and United Kingdom markets are equipped w i t h a
" p a s s i v e " "auto switching o n " function. This function ensures that the alarm is automatically partly
switched on a short while (28 seconds) after the vehicle is left by the user.
The surveillance in the passive operating mode is exactly the same as the normal kind; it can be activated
via the remote control, but the doors are not locked. The automatic insertion takes place 28 seconds after the following conditions have been verified:
- ignition key turned from ON to OFF;
- last open door opened and then closed.
The opening of any door or lid (front/rear), before the 28 seconds have elapsed, stops the countdown.
Closing the door/lid starts off the counting again from zero.
In order to regain possession of the vehicle again after the auto switching
press the remote control button once.
should
PROGRAMMING
The alarm signalling methods can vary according to the laws in force in the country of registration; the
system must therefore be programmed entering the "Country Code" as described overleaf.
The system "recognizes" the code for an unlimited number of remote controls, but only the last 8 are
memorized (when the ninth remote control is entered, the first is expelled from the memory).
There are t w o programming modes (see the description on the pages which f o l l o w ) :
- before entering the access code (password): S I M P L I F I E D PROGRAMMING
- after closing the memory: P R O T E C T E D P R O G R A M M I N G
A
124
Given the importance of following the programming procedure in the correct order, quickly and
accurately, it is advisable, at least initially, for two people to carry out the operations: one reading the instructions and the other carrying them out to the letter.
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Alarm
55.
S I M P L I F I E D PROGRAMMING
A remote control must always be programmed
with the:
- alarm switched off (LED off)
- ignition key extracted or in the OFF or PARK
position
- emergency key (except for versions for the English market which do not have one) in the ON
position
In this programming system all the codes for an
unlimited number of remote controls are "recognized", but only the last 8 remain memorized by
the alarm system as follows:
P4F125L03
1.
2.
3.
4.
5.
1. press the button (5) on the receiver, incorporated in the centre front courtesy light, and
keep it pressed, the adjacent LED (4) should
flash;
2. still keeping the button (5) pressed, press the
remote control button (3);
3. then release the remote control button (3)
when the LED (4) in the receiver comes on
constantly;
4. then release the button (5) in the courtesy
light at the end of the cycle.
If, when the remote control button (3) is pressed, the receiver LED (4) stops flashing and goes out, this
means that the receiver memory is closed; "PROTECTED" programming must be used.
N O T E To programme further remote controls, repeat the operations described above.
Programming the country code
Procedure a)
Having completed the programming of the remote controls, within 1 5 seconds of releasing the button
(5) on the receiver in the courtesy light, the code for the country in which the alarm system w i l l be operating must be programmed by pressing the receiver button (5) n. times in quick succession (see table
below): each time it is pressed, the LED (4) will flash. If the button (5) is not pressed, the system prepares to operate in accordance w i t h the "country code" programmed previously; in the case of the initial
programming, the system automatically operates in the " I T A L I A N " mode.
NOTE
The 15 seconds
are reduced
COUNTRY CODE
(button pressed)
COUNTRY OF
OPERATION
COUNTRY CODE
(button pressed)
1
2
3
4
ITALY
GERMANY
FRANCE
SWITZERLAND
5
6
7
8
onwards.
COUNTRY OF
OPERATION
UNITED KINGDOM
BELGIUM
HOLLAND
EEC
If the procedure has been carried out correctly, the receiver LED (5) will flash; 6 times (for the
system with a red LED) or n. times (for the system with a green LED, where n. is the number of
the "country code"selected),
confirming that the code has been programmed in both the receiver and the control unit. If this is not the case, the LED (5) will flash: 18 times (system with red
LED) or remain
on constantly
for 5 seconds
(system with green LED). If the latter case occurs then it will be necessary to repeat all the operations starting from point 1 of the programming.
For vehicles
destined
for the U.K. market, if the L E D does not come on again,
this
means that the control
unit is not connected
to the receiver
or it is not
supplied.
N O T E When programming the "country code" it is possible to use the procedure for the diagnostic
equipment.
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125
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Alarm
55.
Procedure b)
Alternatively, the "country code" can be programmed using the following procedure:
- open the front lid;
- turn the ignition key from ON to OFF then,
within 15 seconds, press the switch (A) (front
lid opening sensor) 7 times in quick succession (in less than 10 seconds); 5 beeps w i l l
signal entry into M A N U A L DIAGNOSIS (see
paragraph). During this stage (5 beeps) press
the switch (A) and keep it pressed. A last
long beep will signal that this manoeuvre has
been accepted.
- keep the switch pressed for the entire duration of this long beep. The latter confirms entry into the "country code programming" and
consequently the possibility of entering the
"country code";
P4F38AL01
- release the switch (A) and, within 10 seconds, press the same switch n. times (see table on previous
pages) to select the desired country operating mode (each time it is presssed there will be a confirmation beep).
CLOSING THE M E M O R Y
To prevent entering unauthorized remote controls, the memory must be protected (closed); this operation takes place automatically after the alarm system has been switched on/off 128 times. The memory
can also be closed manually by entering the password (4 digit code on the remote control plate illustrated in the "REMOTE CONTROL" chapter): for example on a new vehicle during the pre-delivery stage,
after all the codes for the remote controls w h i c h are given to the Customer have been entered.
The method for entering the password is as follows:
1. Take one of the plates for the remote controls programmed in the receiver, then press the receiver
button for 1 second: the LED will flash as long as the button is pressed.
2. Release the button: after around 3 seconds the LED will flash briefly to indicate the possibility of i n troducing the first figure of the password.
3. Press the receiver button as many times as indicated by the first digit of the password (if, for example
the password is 5.2.0.3.: press it 5 times). It will be noticed that each time the button is activated the
LED will come on briefly to give a visual confirmation.
4. About 3 seconds after the button has been operated for the last time (the fifth in the example) the
LED will emit another flash to request the input of the next figure.
5. Proceed from point 3 to enter all the subsequent figures.
NOTE
When there is a "0" in the password (see example), the receiver button should not be
but one should wait for the request to enter a new figure, signalled by the flashing.
pressed,
After having entered the 4 figures of the Password, the LED in the receiver:
- w i l l f l a s h f o r a b o u t l O s e c o n d s (system w i t h red LED) o r w i l l n o t c o m e o n a g a i n (system w i t h green
LED); this indicates that the Password has been entered correctly;
- willcomeonconstantlyforabout10seconds;thisindicatesthatthepasswordhasnotbeencorrectly entered.
If this is the case, after the LED goes out, the correct password should be entered starting from point 1.
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Alarm
55.
Entering the password correctly "closes" (protects) the memory to avoid the programming of unauthorized remote controls. In effect, w i t h the memory "closed", it is not possible to programme a new remote
control, because after having transmitted the new code, the LED in the receiver stops flashing t o indicate
the failure of the operation. In order to programme a new remote control, the "memory has to be
opened", following the procedure described below.
PROTECTED PROGRAMMING
P4F125L03
1.
2.
3.
4.
5.
3. press the button (5) in the receiver as many times as indicated by the first digit of the password (if,
for example, the password is 5.2.0.3., press it 5 times). It should be noted that each time the button
is activated the LED (4) w i l l come on briefly to give a visual confirmation;
4. about 2 seconds after the button is activated for the last time (the fifth in the example), the LED will
emit another flash to request the input of the next figure;
5. proceed from point 3 to enter all four digits (if there is a " 0 " , there is no need to press, simply wait for
the next request);
6. if the password has been entered correctly (memory opened), the LED will start t o flash (for about
10 seconds), if, on the other hand, it comes on constantly (for about 10 seconds) it is necessary to
repeat the cycle from point 1 because the password has not been recognized.
Programming a new remote control
7. Whilst the LED (4) is flashing, press the button (5) and keep it pressed, the LED (4) w i l l continue t o
flash;
8. press the button (3) for the new remote control until the green/red LED (4) in the courtesy light
comes on constantly;
9. then release the button (3) for the remote control when the LED (4) in the courtesy light comes on
constantly;
10. then release the button (5) in the courtesy light at the end of the programming cycle.
Copyright
If the procedure has been carried out correctly, the LED in the receiver will flash: 6 times (for
systems with a red LED) or n. times (for systems with a green LED, where n. is the number of
the "country code" selected), confirming that the code has been programmed in both the receiver and the control unit.
If this is not the case, the LED will flash: 18 times (systems with red LED) or remain on c o n stantly for 5 seconds
(systems with green LED).
In this last case, all the operations will have to be repeated, starting from point 1 of the programming.
After programming the new remote control, the memory will return to the "closed"
state.
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SYSTEM AUTODIAGNOSTIS
The alarm system is capable of notifying the User of any irregularities in the system by the LED in the
centre of the dashboard coming on either constantly or flashing.
When the system is switched on it carries out an autodiagnosis, whose positive outcome is signalled
by 1 flash of the LED at 4 Hz; if there is an irregularity or system failure, the LED will highlight it according to the methods described in the table below.
Autodiagnostic display
FAULT / FAILURE
FLASHING MODE
8 Hz, duration 2.5 sees
If one of the doors or the front or rear lid is open or the system detects a fault in the volumetric sensor,the
appropriate sensor is excluded from the surveillance and an auditory warning signal (beep) is given out 1
sec after switching on.
the system gives an indication, through the flashing of the LED, of which sensor
has activated the alarm during the surveillance (see table below).
NO. OF FLASHES
1
2
3
4
5
6
7
8
9
10
Light on constantly
The flashes are emitted in order, with intervals of 1.5 seconds for a maximum of 2 minutes or until the
key is turned to the ON position.
If the LED signals faults, the User should seek assistance from the Fiat Service Network. It should be remembered that during service operations on the vehicle or in the case of faults w i t h the alarm w h i c h activate the siren, the alarm system can be excluded by turning the emergency key, located near the junction unit, from the ON position to the OFF position.
When the operation is completed, turn the emergency key to the ON position and always refit the
switch protective cover.
NOTE This is not valide for vehicles destined for the United Kingdom because they are not fitted with
an emergency
key.
Each individual component in the alarm system fitted on the vehicle becomes an integral part,
therefore it should not be fitted or tested on other vehicles, even those of the same model.
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MANUAL DIAGNOSIS
The system is equipped w i t h a special diagnostic socket for connection w i t h the diagnostic equipment.
Before connecting
the diagnostic
equipment,
make sure that the
emergency key is switched ON.
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l\l
B1
OUT
B2
OUT
B3
OUT
B4
IN
B5
OUT
B6
IN
Preparation for relay n.c. contact: +50 for B5 and B10 (*)
B7
IN
12
B8
IN
B9
IN
B10
OUT
0,04
B11
IN
0,04
B12
IN
B13
IN
B14
OUT
0,3
B15
IN
B16
IN
B17
IN
B18
IN
A1
OUT
0,04
A2
I/O
A3
IN
A4
IN
A5
OUT
0,03
A6
I/O
A7
OUT
A8
OUT
0,03
A9
IN
A10
I/O
A11
OUT
0,06
A12
IN
Operation of LED
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CONTROL UNIT WIRING DIAGRAM
+15
+30
UJDJJ
107
XI
ziij] ~ rji
DN/DFF
1 O
10
TT
ur
105
103
"IF
34
LJJ _LJJ
LiJ
-T
110
-E
a,r.]_n_m]_r.]_r.Lj:i
3
4 2
Ml
15.
-T-
111
13
3~.
5T9
108
16-g.
-T-
12
18-3
100
IT
4. Junction unit
8. Left front earth
34. LED
100. Alarm device electronic control unit
103. Diagnostic socket for alarm
105. Alarm device off switch
106. Switch detecting opening/closing of
bonnet lid for alarm
107. Alarm receiver
Copyright
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-T3
243
106
ir
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of
of
of
of
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55.
REMOVING-REFITTING
C O U R T E S Y LIGHT
RECEIVER
IN
ALARM CON-
132
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INTRODUCTION
The car is equipped with a safety and electronic control system w h i c h , in the event of a crash, activates
the Air Bags and seat belt pretensioners.
TheAIR B A G is a passive safety device consisting of one or t w o cushions w h i c h , in a front-end crash,
automatically inflate in between the occupants of the vehicle and the front structures of the interior
compartment.
The seat b e l t P R E T E N S I O N E R is a pyrotechnic device integrated in the seat belt buckle w h i c h , in a front-end crash, recovers the inevitable lengthening of the belts caused by the weight of the person, while
holding the person against the seat squab.
The system consists of the following parts:
1. Electronic control unit
2. Warning light on the instrument panel for indicating system faults
3. Driver's Air Bag module
4. Passenger's Air Bag
5. Socket for connecting FIAT/LANCIA TESTER
6. Air Bag fuse
7. Seat belt pretensioners
The electronic control unit, fitted with suitably calibrated deceleration sensors, detects the crash c o n d i tion and, by means of an electric detonator, activates the reactions of a chemical compound w h i c h causes a compressed gas to expand.
This gas rapidly inflates the synthetic fibre cushions, one housed in the centre of the steering wheel and
the other in the dashboard near the glove compartment.
P4F44AL01
NOTE
The system's
components
are connected
by specific
11-98
Update
as it is
YELLOW.
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55.
DRIVER'S AIR BAG MODULE
1.
2.
3.
4.
5.
Cover
Folded
cushion
Mounting ring
Metal container
Inflation
device
The driver's Air Bag module consists of a metal container (4) for connection t o the steering wheel, an i n flation device ( 5 ) , a cushion (2) and a cover (1) for enclosing the folded cushion.
The Air Bag module is installed in a seating inside the steering wheel by means of a metal interfacing
plate.
IMOTE
The Air Bag module must be replaced 10 years after the installation
date, which is shown on the label.
P4F46AL02
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I N F L A T I O N DEVICE
P4F135L01
7.
2.
3.
4.
5.
6.
7.
The gas generator (3) produces a significant i n crease in pressure causing the compressed gas
(compressed to about 240 bar) contained in the
chamber (1) to emerge and inflate the folded
cushion through the holes (5). The generator is
controlled by the trigger device ( 4 ) .
The contact provided by the electrical connection (7) ignites the chemical substances c o n tained in the trigger which in turn activate the
chemical reactions of the propellent tablet ( 2 ) :
this causes a small explosion w h i c h shatters the
partition (6) and allows the gas contained in
(1) to emerge.
In the trigger circuit there are chemical substances w h i c h react w i t h an electrical contact
(true trigger) and others which activate the reactions of the propellent in the case of high
temperatures (e.g. car catching fire): safety trigger. A t one end of the inflation device there is
the cushion, secured by a metal plate, near the
holes ( 5 ) . The volume of the fully inflated cushion is about 4 0 litres.
The module's cover keeps the cushion folded in
its seating: when the Air Bag operates, the cover
opens along the break lines determined at the
design stage, the top and bottom parts separate
to allow the cushion to emerge fully.
CLOCK SPRING
The clock spring installed on the stalk unit is the
component of the safety system w h i c h constitutes the electrical interface between the
driver's Air Bag and the Air Bag w i r i n g .
This component is designed to ensure electrical
continuity between module and control unit, irrespective of the angle of the steering wheel.
It also transmits the control signal for the horn
and, if applicable, the additional signals to the
radio.
A
P4F47AL01
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55.
P A S S E N G E R ' S AIR BAG MODULE
1. Cover
2. Lining
3. Folded
4. Sleeve
5. Housing
6. Inflation
device
cushion
The passenger's Air Bag module is the same as the driver's Air Bag in terms of composition and operation, differing only in its larger size. This module is mounted on the dashbaord by a metal bracket ( 5 ) .
The inflation device (6) consists of a steel cylinder which is larger than that on the driver's side, while
the gas generator, trigger device and propellent tablet are the same as on the driver's module.
This reservoir is also filled w i t h a mixture of Argon and other gases. The volume of the fully inflated
cushion is about 90 litres.
NOTE
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PRETENSIONERS
NOTE When vehicles
The seat belt PRETENSIONER is a device built into the reel. In the case of frontal impact it takes up the
inevitable lengthening of the seat belt caused by body weight in order to hold the body against the seat
squab.
The seat belt must stay as close as possible to the body in order to ensure that the belt absorbs kinetic
energy that the body assumes during impact.
If a seat belt fails to hold the body against the squab during impact, the causes of this failure are probably as follows :
- delayed activation of the inertia lock device;
- stretching of seat belt fibres;
- too much belt rolls out of the reel;
- thich garments create a space between belt and upper body.
If we add up all these reasons, it is easy to understand that the belt will only be effective once the body
has moved forward to a certain extent.
PRETENSIONERS A R E FITTED TO BOTH FRONT S E A T S BELTS. T H E Y MUST A L W A Y S BE FITTED
TOGETHER WITH AIR B A G S B E C A U S E T H E Y FORM AN INTEGRAL PART OF AIR BAG O P E R A TION.
/.
2.
3.
4.
5.
6.
7.
8.
Electrical
connector
Gas generator
Gas (nitrogen)
Piston
Steel cable
Cylinder
Seat belt
Spring
(Direction
of
motion)
P4F49ALD1
When a given deceleration rate occurs, the control unit supplies the gas generator ( 2 ) .
The gas pressure built up by the generator (2) applied to the surface of piston (4), generates a force
which pushes it up inside cylinder (6).
Linear motion toward the top of piston (4), to which is fitted steel cable (5) whose end is fastened to the
flange of coil (8), is converted into linear motion of the coil and belt (7) is therefore reeled in by a few
centimetres.
The inevitable lengthening of the belts are taken up in this way and the occupant's body is held against
the seat squab.
A
Copyright
Fiat Auto
it is necessary to REPLA
CE THE BEL T IN
ALL
137
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E L E C T R O N I C CONTROL UNIT
/. Electronic control unit
2. Arrow showing control unit fitting
tion
3. 30-way
connector
direc-
P4F45AL02
The control unit must be positioned w i t h arrow (2) facing in the vehicle's direction of
motion.
N
FUNCTION
FUNCTION
16
17
18
19
N.C.
20
N.C.
21
22
23
N.C.
24
N.C.
10
25
11
26
12
N.C.
27
N.C.
13
28
14
29
15
30
N.C.
The electronic control unit is locataed beneath the central vehicle console and fastened rigidly to the
floor.
It is fitted with a 30 pin connector (3) for connection to the electrical system.
It is supplied with 12V when the ignition key is turned to MAR, but can still operate for about 150 ms after the power supply is cut off due to impact.
This is made possible due to the presence of a buffer condenser contained inside the electronic control
unit. This accumulates sufficient electrical energy to ensure normal control unit operation and to generate a pyrotechnical charge detonation signal.
Air bag operation is therefore still ensured even if the impact causes a system power cut (e.g. battery
damage or breakage, supply lead breaks).
NOTE
138
This safety function is activated only for air bags and NO T for pretensioners
in the case of a power cut.
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Inside the control unit there is an accelerometric sensor whose signal, suitably processed by a microprocessor, allows the severity of a crash to be detected, and so the activation of the pretensioners and Air
Bags to be decided.
A second sensor with safety functions gives the enablement for activation of the Air Bags.
There are two different activation thresholds: a high one for the Air Bags (both of which
vene together), and a low one for the pretensioners on the right and left seats.
inter-
Fault memory
While the car is driving, the electronic control unit constantly conducts a fault diagnosis of the system,
thus checking the continuity of the circuits and its components.
A detected fault is memorized and at the same time the "Air Bag" fault warning light on the instrument
panel comes on.
The fault memory can be consulted during Servicing by connecting the FIAT/LANCIA TESTER or other
diagnostic instruments to the diagnostic socket (see description below).
Crash memory
As mentioned, the control unit's microprocessor carries out complex calculation and check algorithms
on the signal coming from the accelerometric sensor, and recognizes the severity of a crash. Depending
on the level of severity detected, and with the enablement of the safety sensor, it sends an activation signal to the pretensioners and Air Bags.
This order of activation is memorized in a special crash memory, which contains the information relating
to intervention thresholds being exceeded and the enablement of the safety sensor.
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PAGE
1
IS C A N C E L L E D
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Electrical system
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55.
AIR BAG WARNING LIGHT
The Air Bag warning light on the instrument
panel is supplied via the ignition switch
when the ignition is on, and is earthed
through the electronic control unit.
r-
(+15)
142
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55.
L I F E OF T H E S Y S T E M C O M P O N E N T S
AlRBAG
ATTFNZIONE: consullare il libretto di
manutenzione, sostituire la carica entro ij
CAUTION: see owner's manual,
replace gas generator by
ATTFMTION: consulter la notice d'entretien.
remplacer la charge avant le
ACHTUNG: Bedienungsanleitungen nacnsehen.
=4
SELF-TEST
To ensure that the system is working and t o detect any faults, the control unit subjects the entire system
to a self-test.
Self-test when ignition is switched on
The initial tests of the system are carried out. This part of the self-test is completed 4 seconds after the
ignition has been switched o n .
Self-test during normal operation of the system
During this stage, tests are carried out repeatedly every 10 ms (check on battery voltage of energy reserve, accelerometers, ignition circuits, etc.).
To indicate that the system is functioning correctly, the Air Bag warning light on the instrument panel
comes on for the first 4 seconds and goes out if no faults are detected. This warning light comes on during driving if faults are detected during operation of the system.
Activations of the system following a fairly severe crash are also memorized by the control unit.
F A U L T DIAGNOSIS
Fault diagnosis may be conducted using the FIAT-LANCIA TESTER or other diagnostic systems.
Diagnosis with Fiat Lancia Tester
The Fiat-Lancia Tester allows data to be transferred outside, i.e. for the contents of the Air Bag control
unit's memory to be read: faults and production data.
Faults memorized in the control unit may be deleted, after the fault has been repaired, by means of the
FIAT/LANCIA TESTER or other diagnostic instruments.
During fault diagnosis, if it is necessary to carry out continuity measurements on the module
lines, it is essential to disconnect the modules from the wiring and replace them with the special
simulation
resistors.
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Marea-Marea
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55.
W I R I N G DIAGRAM
4.
6.
22.
114.
115.
116.
Junction unit
Instrument panel
Left hand facia earth
Air bag electronic control unit
Passenger air bag
Driver air bag
Copyright
Fiat Auto
130.
133.
241.
242.
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Electrical equipment
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55.
m M
mmm
S A F E T Y PRECAUTIONS
TED WITH AN AIR-BAG
TO BE OBSERVED
SYSTEM
WHEN
WORKING
ON VEHICLES
FIT-
OPERATIONS ON V E H I C L E
Note that air bag modules are devices which should be handled with care. Their use, transport and
storage are governed by the legal regulations covering explosives applicable in the country where
the vehicle is sold.
Before beginning to carry out:
- repairs t o the body;
- welding work;
- work where it is necessary to remove the air bag modules, the pretensioners or the control unit.
A Turn the key to STOP and remove. Disconnect the battery, i.e. DISCONNECT TERMINALS ( - a n d + )
from their respective poles and THOROUGHLY INSULATE using tape.
B Disconnect the control unit connector and wait for at least 10 minutes after removing the battery.
C If an air bag inflation device is removed, stricly observe the following procedure:
1. Wait for at least 10 minutes after disconnecting the battery before beginning to remove the module.
2. Unscrew the bolts fastening.
3. Disconnect the inflation device plug.
4. Replace the devices with the cover facing
up, in a locked steel cabinet. This cabinet
is designed solely for this purpose and
should never be used to store other types
of materials, particularly if inflammable.
The cabinet must be designed to store pyrotechnic charges (steel, impact-resistant
cabinet with grates to allow natural ventilation inside). It must be marked in accordance with current legislative requirements (DANGER EXPLOSIVES - DO
NOT USE NAKED FLAMES - NOT TO BE
OPENED BY UNAUTHORIZED PERSONNEL).
NOTE
All the connectors used and wiring on the air bag modules contain a short-circuit clip. Until the
air bag modules are connected to a power source with the appropriate characteristics by a suitable connector, the units cannot be activated
incorrectly.
Any system component NO T activated in the case of an accident should be considered still active. Components which fail to explode due to defects, because they are out of warranty or require changing for other reasons must be returned to the appropriate centre by using the procedure described below.
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The components of the safety system must be dismantled and refitted ONL Y by skilled and authorized technical staff.
The failure to observe the following instructions could lead to accidental activations of the system, personal injury or unnecessary repairs of the system.
IT IS STRICTLY
NOT PERMITTED
TO DISMANTLE
THE AIR BAG MODULES
INTO
THEIR
COMPONENTS.
IMOTE
All the system's components have been designed specially to operate in a specific make and
model of car, so the modules or pretensioners must not be adapted, reused or installed on other
cars, only those for which they have been designed and manufactured.
Any attempt to reuse, adapt or install them on another type of car could cause injury to the occupants of the car in the event of a crash.
under no circumstances
unit.
If the control unit is replaced, remove the adhesive label from the control unit and affix it in the special
file in accordance w i t h the above-mentioned procedure.
IMOTE
on the system,
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55.
Interventions after an accident
If any component of the safety system is damaged following an accident, it M U S T be replaced.
Do not attempt to repair the control unit, clock spring or Air Bag modules.
Accidents with or without activation of the Air Bag system
Some components of the safety system should be inspected both if the system has been activated and if
it has only partially or has not been activated.
These components are:
- steering column;
- steering column mountings;
- area of attachment of electronic control unit and modules;
- clock spring;
- dashboard (in area of passenger's air bag module).
The component must be replaced if it distorted, broken or bent.
Accidents with activation of the Air Bag system
Some components of the safety system must be replaced if the car has suffered a front-end collision involving the total or partial activation of the safety system.
In the case of partial activation (only pretensioners), these components are:
- pretensioners;
- electronic control unit (must be replaced only after the third activation of the pretensioners).
In the case of total activation of the safety system, these components are:
- Air Bag modules;
- pretensioners;
- electronic control unit.
As regards the wiring and connectors, these must be inspected in order to identify any signs of burns,
melting of the outer insulation or damage due to excessive heat.
If there are any signs of damage on the clock spring and area of attachment of the electronic control unit
and Air Bag modules, the damaged components must be replaced.
Paintwork tasks
There are no particular safety measures t o be taken for paintwork tasks followed by oven drying, as the
safety system (Air Bags and pretensioners) as a whole has been designed not t o be damaged when the
external surfaces of the car are heated up by normal paint drying systems.
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RISKS TO HEALTH
The following precautions should be observed when handling activated Air Bag modules:
1. Wear protective gloves and safety goggles.
2. After touching triggered Air Bag units, wash your hands and exposed parts of the body w i t h soap and
water.
EFFECTS OF OVEREXPOSURE
There is no potential risk of exposure to the propellents, as the system is totally sealed.
The propellent mixture is in the solid state, so inhalation is impossible even in the event of breakage of
the gas generator cartridge.
If gas leaks out, there is no risk to human health.
Nevertheless avoid contact w i t h the skin and d o not swallow the propellent.
In
In
the case of
Contact
with the skin: wash immediately with soap and water.
Contact with the eyes: wash the eyes immediately in running water for at least 15 minutes
Inhalation:
take the victim out into the open air immediately
Ingestion:
induce vomiting if the person is conscious.
these circumstances
always seek medical
attention.
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When removing and replacing open (exploded) Air Bags, handle only one module
at a time and wear gloves and goggles during removal.
On completing the operations, wash your
hands thoroughly w i t h soap and water, and
in the case of contact of the residual powders of the device w i t h the eyes, rinse immediately with plenty of running water.
The metal components of an Air Bag which
has just exploded are very hot. Avoid
touching these components for some minutes (about 20) after the Air Bag has been
activated.
A During removal and replacement of UNEXPLODED Air Bags, always rest the Air Bag module with the opening
flap and pre-break groove facing upwards. Do not put anything on the flap.
B Under no circumstances supply the Air Bag module with electrical current.
C Do not repair the Air Bag modules. Send all faulty modules back t o the supplier.
D Do not subject the Air Bag module to heating, for example welding, hammering, drilling, machining,
etc.
- Never install in the car Air Bag units w h i c h have been dropped or which s h o w signs of any kind of
damage.
- The Air Bag modules must not be kept with flammable or combustible material.
- The gas generators must not come into contact w i t h acids, fats and heavy metals: contact w i t h such
substances could cause the creation of poisonous or harmful gases or explosive compounds.
- Spare parts must be stored in their original packaging and their temporary storage must f o l l o w the
same procedure as for an Air Bag module removed from the car and not activated, i.e. a specially-allocated locked metal cupboard must be used (impact-proof metal cabinet w i t h grilles to permit natural
internal ventilation). The cabinet must bear special signs (DANGER EXPLOSIVES - DO NOT USE
NAKE FLAMES - NOT TO BE OPENED BY UNAUTHORIZED PERSONS).
- On all versions with Air Bags, staff carrying out interventions must not work from the front seats w i t h out first rendering the system inoperative by switching the ignition off and removing the key, disconnecting and isolating the battery and finally waiting 10 minutes.
- If for exceptional atmospheric events (flood, high tides, etc.) water and mud reach a height w h i c h affects the components of the device, they must be replaced.
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AIR BAG AND PRETENSIONERS
55.
DISPOSING O F U S E D AIR BAG M O D U L E S
Air bag modules fitted on the vehicle must not be demolished with the vehicle, but removed beforehand.
Air bags cannot be scrapped without first being set off.
If an air bag module has not gone off for any reason during an accident, the device must be considered
still set to go off. All unexploded material must therefore be sent to GEMCA of Chivasso, w i t h the f o l lowing wording on the delivery note:
"AIR BAG/PRETENSIONER DEVICE CONTAINING PYROTECHNIC CHARGE TO BE DE-ACTIVATED".
Devices must be sent to GEMCA in the same packing/boxes in w h i c h the parts were received. If the
original packing is not available, packs alone can be ordered from the Volvera Parts department.
Naturally, whenever AIR BAG - PRETENSIONERS are changed, the original pack should be saved i n tact so that the unactivated device can be forwarded t o GEMCA.
Foreign markets
In the case of foreign markets, check local legislation and inform the dealer network.
Failure to respect the procedures listed above may lead to unwarranted air bag detonation and
personal injury. Un-activated air bags must NO T be disposed of using normal refuse
collection
procedures. Unactivated air bags contain substances dangerous to the health which may cause
personal injury if the sealed container containing the unit is damaged during disposal. Failure to
observe this procedure when disposing f air bags may lead to a breach of current
legislation.
Ordering procedure
If necessary, devices may be ordered as required from the Parts After-sale department in Volvera using
only the depannage procedure because Dealers should not hold a stock of such parts. In any case, during internal handling they should be entered in a charge/discharge register which shows module identification numbers and vehicle data (chassis no., registration data, model etc.)
NOTE
accordingly.
S A F E T Y R E G U L A T I O N S FOR HANDLING P R E T E N S I O N E R S
Pretensioners are made out of explosive material and they should be handled, transferred and stored
properly in order t o avoid any damage or injury.
Under normal conditions, pretensioners are activated only upon an electronic detonation command issued during impact. During activation, small quantities of gas are produced which mainly consist of nitrogen, a non-toxic gas.
The following rules must ABSOLUT EL Y be observed to ensure the safety of operators and the
condition of the belt/pretensioner
assembly. Before each repair, turn the key to STOP, remove
and disconnect the battery; wait for 10 minutes before disconnecting the pretensioner
connectors.
Any pretensioner not activated during an accident should be considered still active. Any pretensioner
undetonated due to a defect, because it is out of warranty or for other reasons for w h i c h repair is required, must be returned (whole device) to the apprropriate centre using the same procedure described
for air bag modules.
A
Copyright
Fiat Auto
151
Electrical equipment
Marea-Marea
Weekend
55.
A Never move pretensioners by holding
them by the pipe.
B Never move pretensioners by holding
them by the belt.
C Never tamper w i t h pretensioners or attempt to repair them. Send all defective
pretensioners back to the supplier.
D Never subject pretensioners to percussion,
drilling, machining or heating due to w e l d ing.
E Never allow the unit to drop or subject to
impact. Pretensioners which have been
dropped from a height greater than 1 metre
must not be used but sent back to the supplier.
When operations carried out on a veicle require temporary removal, use a steel cabinet w h i c h meets legal requirements to
house the explosive charges (see box indicated for air bag modules).
F Never bring naked flames, liquids, solvents
or lubricants close to the device and do not
expose to a temperature higher than 90 C.
With temperatures higher than 165 C, the
gas generator may self-ignite.
When handling a device which has been
activated, use gloves and protective g o g gles.
If the device has gone off, ALWAYS leave
at leastl 30 minutes following activation
before touching the device.
Wash hands w i t h soap and water after
handling the device.
Ordering procedure
Follow the same procedure described for air bag modules.
Scrapping pretensioners
Follow the same procedure indicated for air bags.
152
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Marea-Marea
Weekend
Electrical equipment
AIR BAG AND PRETENSIONERS
55.
REMOVING-REFITTING
BAG
DRIVER'S AIR
A/ways fit and remove air bag modules with the ignition key turned to
"STOP" and removed, and with the
battery positive and negative leads
disconnected and insulated. Wait 10
minutes before carrying out the following
operations.
OBSERVE
ALL SAFETY
REGULATIONS
DESCRIBED
PREVIOUSLY.
NOTE
- Replace the module in a cabinet as described previously. The correct module position is shown in the figure.
NOTE
operations
NEVER CONNECT
THE BATTERY
UNTIL FITTING HAS BEEN
COMPLETED
CORRECTLY.
NOTE
Copyright
Fiat
Auto
153
Electrical equipment
Marea-Marea
Weekend
55.
REMOVING-REFITTING WATCHSPRING
- Remove the driver's side air bag as d e scribed on the previous page. Observe the
SAFETY REGULATIONS indicated.
All the following operations must be
carried
out with
the
WHEELS
ALIGNED
WITH THE CAR'S
LONGITUDINAL AXIS (wheels
straight).
If necessary, lock the steering column).
A
A
154
no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
AIR BAG AND PRETENSIONERS
55.
Copyright
Fiat Auto
155
Electrical equipment
Marea-Marea
Weekend
55.
REMOVING-REFITTING PASSENGER
AIR BAG
A/ways fit and remove air bag modules with the ignition key turned to
"STOP" and removed and with the
battery positive and negative leads
disconnected and insulated.
Then wait 10 minutes before proceeding as follows.
OBSERVE
LATIONS
OUSLY.
ALL SAFETY
DESCRIBED
REGUPREVI-
156
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no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
AIR BAG AND PRETENSIONERS
55.
- Disconnect connector leading from the
control unit. Take care not to pull by the
lead but by the body of the connector itself.
Remove the air bag module from the vehicle.
Rest the air bag module on the work bench
w i t h the cover turned up.
NOTE
P4F157L01
- Replace the module in its cabinet as d e scribed previously. The figure shows the
correct position of the module.
NOTE
operations
NEVER
RECONNECT
THE
TERY UNTIL
INSTALLATION
COMPLETE.
NOTE
BATIS
system
LANCIA
R E P L A C I N G P A S S E N G E R S I D E A I R BAG
COVER
- Remove the passenger side air bag as d e scribed in the previous pages. Observe the
SAFETY REGULATIONS indicated.
- Move the heater control panel ( A ) and the
right hand ventilation outlet (B) t o gain access to the air bag cover retaining screws.
Copyright
Fiat Auto
157
Electrical equipment
Marea-Marea
Weekend
55.
<>
IMOTE
R E M O V I N G - R E F I T T I N G AIR
BAG C O N T R O L UNIT
.-A
158
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no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
AIR BAG AND PRETENSIONERS
55.
DO NOT RECONNECT
THE BATTERY UNTIL
INSTALLATION
IS
COMPLETE.
NOTE
Copyright
Fiat Auto
159
Electrical equipment
Marea-Marea
Weekend
55.
REMOVING-REFITTING
PRETENSIONERS
1. Remove fastening covers (A) and u n screw nut (B) adjusting height of the front
seat belt.
2. Prise up the bolt cover panel (C), then
unscrew retaining bolt ( D ) securing the
pillar trim.
3. Remove the fastener cover and unscrew
screw retaining the front seat belt.
Use tool 1878077000 t o release and raise
the rear protective strip, then unscrew bolt
(A) retaining the pillar cover.
4. Unscrew the front bolt under the facia retaining the protective strip and use tool
1878077000 to release and lift the front
protective strip. Unscrew the pillar cover
retaining bolt.
5. Lift up door seals (A) and (B) near t o the
pillar trim. Remove central pillar trim using
tool 1878077000 to gain access to the
pretensioner device.
P4F160L02
P4F160L03
160
P4F160L04
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no.
506.763/01
Marea-Marea
Electrical equipment
Weekend
55.
4IA
Always remove and fit the pretensioners with the ignition key turned
to STOP and removed and with the
battery negative and positive
leads
disconnected
and insulated.
Then
wait for 10 minutes before proceeding with the following
operations.
ALWAYS
OBSERVE
ALL
SAFETY
REGULATIONS
DESCRIBED
PREVIOUSLY.
Copyright
Fiat Auto
CONNECT
THE BATTERY
INSTALLATION
IS COM-
NOTE
NOTE
161
Electrical equipment
Marea-Marea
Weekend
Recharging
55.
BATTERY
Batteries fitted to all versions of this vehicle
are SE type (Sealed Energy) and do not require maintenance.
This type of battery offers the following advantages over the conventional type:
- very l o w electrolyte consumption due to
the use of a new type of grille and plate alloy;
- very l o w charge loss rate. This allows efficient starting for a period of 7 months: the
battery is therefore suitable for extended
storage (at temperatures less than 28C);
- reduction in the volume of gas produced
during charging: this gas is responsible for
corrosion and the resulting poor terminal
contact.
If the battery is assumed to be flat, leave unattached for at least two hours, measure the open circuit
voltage by connecting a digital voltmeter to the terminals. If less than 12.30 V it is 50% charged, if 12.48
V it is 75% charged; if 12.,66 V it is 100% charged.
// the electrolyte level is lower than the minimum level on the plastic container in one or more
chambers, open the well cover and add distilled, deionised water (as with normal
batteries).
IMOTE
Do not attempt to charge the battery quickly at voltages in excess of 75.5 V, or using high currents and high recharging
amperages.
ALTERNATOR
Check maximum voltage and current intensity delivered by the alternator on the vehicle by using a
digital multimeter and HALL effect clip-on ammeter.
Description of clip-on ammeter and use
When this clip is connected to a multimeter, it
measures: battery charge and discharge current,
current controlled by SCR (silicon controlled
diode), current uptake by starter motor, from 10 to
600A without needing to interrupt the circuit. Before beginnng measurement:
- set ' L O - H I ' switch to " L O " to meausuer up to
200A or to " H I " for measurements between 2 0 0
and 600A.
The reading may be taken in both positions for
any value, but the change in position is necessary to ensure greater reading precision on the
display.
After connecting the multimeter, set the device to the 200mV or 2V range, a.c. or d.c. according t o the
current to be measured.
If the range selected is 200mV, the reading will be directly in Amps. If the range is 2V, the reading will
be multiplied by one thousand.
Now reset the gauge by means of the "ZERO A D J U S T " knob. When the presence of dispersed electrical fields is suspected, reset to zero w i t h the clip held 5-10 cm from the driver.
In the case of d.c. measurements, hysteresis effects could make it impossible to reset the clip t o zero. In
this event, open and close the clip a few times and then proceed to reset.
162
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no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Recharging
55.
NOTE
NOTE
- 4 0
- 2 0
+ 2 0
+ 4 0
+ 0 0
+ 8 0
P4F163L06
Refer to Group 00
"TECHNICAL
DA TA " for the type of alternator fitted to the various vehicle
versions
and
specifications.
+ 1 1 0
op
*
E l e c t r o n i c regulator v o l t a g e a s a f u n c t i o n o f e n v i r o n m e n t a l t e m p e r a t u r e
Copyright
Fiat Auto
163
Electrical equipment
Marea-Marea
Weekend
Recharging
55.
164
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no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Recharging
55.
Overhaul
If the alternator charge signal is missing or irregular, carry out the following checks before
fully dismantling the alternator:
Copyright
Fiat Auto
165
Electrical equipment
Marea-Marea
Weekend
Recharging
55.
Checking diodes
Checking
excitation
diodes
positive
diodes
negative
diodes
P4F166L03
166
P4F166L04
Publication
no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Recharging
55.
NOTE
Copyright
Fiat Auto
167
Electrical equipment
Marea-Marea
Weekend
Recharging
55.
<i>
(5-6);
- the gauge should show a certain resistance value for each measurement.
<>
168
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no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Recharging
55.
1. Loosen nuts retaining belt tensioner bearing, prise off the belt and remove from the
vehicle.
2. Disconnect electrical connections, then
unscrew lower alternator retaining bolt.
3. Position a hydraulic jack beneath the e n gine mount as shown in the figure.
4. Unscrew the bolts retaining the engine
mount to the body
5. Lower the hydraulic jack in order to remover the alternator.
NOTE
Copyright
Fiat Auto
169
Electrical equipment
Marea-Marea
Weekend
Recharging
55.
170
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no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Recharging
55.
1. Unscrew the nuts retaining the first section of the exhaust pipe t o the power unit
and remove from the vehicle.
2. Position a hydraulic jack beneath the
power unit as shown in the figure.
3. Unscrew the reaction bracket bolt. Lower
the hydraulic jack in order t o move the
power unit to take out the alternator.
4. Open the protective cover and disconnect
the electrical connections from t h e alternator.
5. Unscrew bolts retaining the alternator to
the power unit and remove from the vehicle.
NOTE
Copyright
Fiat Auto
171
Electrical equipment
Marea-Marea
Weekend
Recharging
55.
R e m o v i n g - r e f i t t i n g (engine 1998)
Place the vehicle on a lift and drain the heating/ventilating system (see Section 5 0 ) .
Remove the right light cluster as described in
the relevant paragraph.
1. Raise the vehicle and loosen the belt tensioner bearing after removing the lower
protective guard.
2. Lower the vehicle and remove the compressor protection shown in the figure.
3. Disconnect electrical connection and the
heating/ventilation pipe shown.
4. Disconnect the heating/ventilation system pipe from the compressor. Work
through the empty light cluster compartment.
5. Loosen the bolt retaining the alternator
support bracket.
172
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Marea-Marea
Electrical equipment
Weekend
Recharging
55.
Copyright
Fiat Auto
P4F173L01
P4F173L02
P4F173L04
P4F173L05
173
Electrical equipment
Marea-Marea
Weekend
Recharging
55.
174
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no.
506.763/01
Marea-Marea
Electrical equipment
Weekend
Recharging
55.
2.
3.
4.
5.
Copyright
Fiat Auto
VII-96 - Update
174/1
Electrical equipment
Marea-Marea Weekend
Recharging
55.
1 Disconnect power steering pipe mount
(A) after unscrewing the retaining nuts indicated.
2. Position a lift beneath the central rear
gearbox mount (A) as shown in the figure.
Then raise slightly.
Unscrew mount bolts (B) and allow the
engine-gearbox assembly to lower.
3. Unscrew both alternator retaining bolts,
then move slighly to one side.
4. Remove the alternator by turning and
pulling out.
174/2
VM-96 - Update
NOTE
NOTE
Marea-Marea
Electrical equipment
Weekend
Recharging
55.
REMOVING-REFITTING
(Engine 2387TD)
- Remove the starter motor as described previously.
- Remove the right front wheel.
1. Unscrew bolts (A) and remove retaining
caps ( B ) then remove the right front
wheel guard.
2. Loosen belt tensioner bolt ( A ) .
Fit tool 1860966000 to the hexagonal
socket ( B ) and turn in the arrowed direction to loosen the drive belt until it can be
removed at point ( C ) ; remove the belt
from alternator pulley ( D ) .
3. Open cover ( A ) and disconnect connections (B and C) from the alternator.
4. Unscrew lower alternator bolts ( A ) and
upper alternator bolts ( B ) .
P4F211L03
Vlt-96 - Update
174/3
Electrical equipment
Marea-Marea
Weekend
Recharging
55.
1. Unscrew lower bolt fastening the oil d i p stick.
2. Lower the lift and unscrew the upper oil
dipstick screw, then remove from the e n gine.
3. Unscrew bolts from the oil vapour separator (A) then move slightly.
4. Remove the alternator from the compartment left free by the oil vapour separator.
174/4
N OTE
IMOTE
VII-96 - Update
Publication
operations
no.
506.763/02
Marea-Marea
Weekend
Electrical equipment
Starting
55.
S T A R T E R MOTOR
Copyright
Fiat Auto
175
Electrical equipment
Marea-Marea
Weekend
Starting
55.
Bench overhaul
1 . Position the starter motor as shown in the
figure and unscrew the bolts indicated.
2. Unscrew the bolts indicated and withdraw the starter mtor steel protection.
3. Take the pressure off the brushes by positioning the tabs as shown in the figure.
4. Unscrew electrical connection retaining
nut indicated.
176
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506.763/01
Marea-Marea
Electrical equipment
Weekend
Starting
55.
P4F177104
Copyright
Fiat Auto
P4F177L05
177
Electrical equipment
Marea-Marea
Weekend
Starting
55.
P4F178L02
disas-
178
Front mount
Solenoids
Spring guide bush
Safety buffer
Pinion engagement fork
Rear mount
Brush carrier stator-plate assembly
Rotor-pinion assembly with free wheel
Publication
no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Starting
55.
Checks
Carry out the following tests on the starter motor:
rotor: test continuity, short-circuits and earth insulation
stator: test continuity and earth insulation
brush carrier mount: earth insulation
solenoids: test continuity and earth insulation
BM
When the starter motor engages noisily upon start-up, replace the pinion-free
wheel.
Copyright
Fiat Auto
179
Electrical equipment
Marea-Marea
Weekend
55.
NOTE
180
To service and check the starter motor, refer to information given in previous pages for another engine version.
Publication
no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Starting
55.
Removing-refitting (engine 1747)
1. Unscrew nut indicated and remove the
vehicle battery.
IMOTE
Copyright
Fiat Auto
181
Electrical equipment
Marea-Marea
Weekend
Starting
55.
NOTE
1850167000
182
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no.
506.763/01
Marea-Marea
Weekend
Electrical equipment
Starting
55.
Copyright
Fiat Auto
NOTE
183
Electrical equipment
Marea-Marea
Weekend
Starting
55.
REMOVING-REFITTING
(Engine 1910TD)
- Position the vehicle on a stand.
1. Open the bonnet lid and remove the battery after disconnecting the electrical terminals and the retaining bracket ( A ) .
Disconnect the engine protection after
unscrewing nuts ( B ) .
2. Unscrew bolts ( A ) and move the power
steering reservoir t o one side.
3. Unscrew both upper starter motor bolts
and move square ( A ) out of the way.
4. Raise the vehicle and remove the lower
engine protection ( A ) after unscrewing
the retaining bolts.
5. Disconnect supports ( A ) and (B) from the
exhaust pipe section after unscrewing the
retaining bolts.
Remove the exhaust pipe section (C) after
disconnecting from flanges ( D ) and (E). ,
184
VII-96
Upddtc-
Publication
no.
506.763/02
Marea-Marea
Electrical equipment
Weekend
Starting
55.
Copyright
Fiat Auto
Vtl-96 - Update
NOTE
NOTE
operations
185
Electrical equipment
Marea-Marea
Weekend
Starting
55.
REMOVING-REFITTING
(Engine 2387TD)
1. Place the vehicle on a lift and open the
bonnet lid.
Disconnect pipe (A) from the side indicated.
Unscrew nuts ( B ) and slightly move fuel
filter (C).
2. Disconnect connectors and remove the
fuel filter.
3. Unscrew both upper starter motor retaining bolts.
4. Disconnect supply connections ( A ) and
(B).
5. Raise the vehicle; disconnect the oil
vapour pipe from side ( A ) .
Unscrew lower starter motor bolt ( B ) and
then remove from the vehicle.
NOTE Reverse order of removal
operations
to refit.
NOTE
186
VII-96 - Update
Publication
no.
506.763/02
Marea-Marea
Electrical equipment
Weekend
Lighting
55.
E L E C T R I C HEADLAMP ALIGNMENT D E V I C E
The front headlamp units are vertically aligned, according to car load, by means of a potentiometer o n
the control panel. Four numbers screen-printed o n to the potentiometer correspond t o four different
load conditions.
- Position 0:
driver alone or w i t h a front seat passenger.
- Position 1:
all seats occupied (5 people).
- Position 2:
all seats occupied plus maximum permitted load
in the luggage compartment.
- Position 3:
driver only, plus a 400 kg load, all stowed in the
luggage compartment.
Location of components and wiring harness for electric headlamp adjustment device
3.
4.
5.
7.
8.
10.
11.
12.
Copyright
Fiat Auto
IX-97 - Update
187
Electrical equipment
Marea-Marea
Weekend
Lighting
55.
Operation
Headlamp alignment is adjusted electrically. Alignment can be carried out w h e n the ignition key is
turned t o MAR and the headlamps are dipped. The headlamps are moved by t w o motor actuators
(43-44) fitted directly t o the light units. Control unit (45) consists of a resistance divider and a potentiometer. A potentiometer knob on the facia may be adjusted t o four different positions corresponding t o
four headlamp settings. The wiring diagram shows connections for the various system devices.
The system is supplied by a 12V source from the ignition switch and is protected by fuse (F5) located on
junction unit (4). The actuator consists of a motor t o which is fitted a potentiometric position transducer
and an electronic control unit.
Wiring diagram showing headlamp alignment device connections
43
44
11
r H I I N I
10
r x x l
<c
o o o <=>
CO ^
00
NZ
HB
NZ
U j Ljjj Ljjj 3 j
M
13
-NZ
N.D.
NZ
-HB-
NZrHB-
HBH
C4I3 70
12 3 6 7 8
UJ
LU
R R
86
HR | N
HR
N,D.
5 7
- R R
LTJ
N.D.
LB-
t3
8787a 30 85
N.D.
-LB L
m HR LR
H
-AG*AG-
N.D.
AG
AG
LR
HR
NZ
NZ N
y y \
\y
42
to
45
12
188
Publication
no.
506.763/06
Marea-Marea
Weekend
Electrical equipment
Contents
55.
page
TAXI VERSION
- Location of supplementary
components on vehicle
Copyright
Fiat Auto
electrical
1
- Wiring diagram
Marea-Marea
Electrical equipment
Weekend
TAXI version
55.
TAXI versions of the Marea and Marea Weekend are available w i t h t w o engines: 1581 16v (manual
gearbox or automatic transmission) or 1910 turbodiesel equipped with a manual gearbox.
This outfit is specific to both Saloon and Weekend versions. It includes certain equipment w h i c h may be
used to convert the vehicles easily into TAXIs:
-
Wiring for connection of taxi meter, taxi radio and a roof-mounted TAXI sign
Power point in the luggage compartment (to supply vacuum cleaner, minibar etc.)
Upgraded 60 A h battery (originally 50 Ah) for 1581 16v version
Upgraded 70 A h battery (originally 60 Ah) for 1910 TD version
Key
P4F01BL01
Copyright
Fiat Auto
307.
308.
309.
310.
311.
312.
313.
Electrical equipment
Marea-Marea
Weekend
TAXI version
55
PREDISPOSITION
TAXI M E T E R
to refit
FOR CONNECTING
P4F02BL04
Publication
no.
506.763/03
Marea-Marea
Electrical equipment
Weekend
TAXI version
55.
1. Unscrew the seven retaining screws i n d i cated.
2. Remove the lining to gain access t o t h e
following predispositions:
a. taxi meter connection joint
b. 7.5A taxi meter fuse
PREDISPOSITION
TAXI RADIO
to refit
FOR CONNECTING
Copyright
Fiat Auto
Electrical equipment
Marea-Marea
Weekend
TAXI version
version
power
compartment
point
power
P4F04BL04
Publication
no.
506.763/03
Marea-Marea
Electrical equipment
Weekend
TAXI version
55.
ENGINE BAY F U S E S
The following fuses are housed on the left rear side of the engine bay and protected by a cover:
FUSE D
30A
40A
50A
4. Junction unit
6. Instrument panel
1 1 . Battery
Copyright
Fiat Auto
..
Electrical equipment
Marea-Marea
Weekend
TAXI version
55,
Wiring diagram
307
R-S-[7,5A]-a-R
H i l l 11
10
11
YYYT
IsJ
1|1
TTTT
310
l i l IsJ
BN
S N.D.
1314
L.
313
R-*-RN-
RN
rTr-Bll
R R ^ - C 7,5A
N.D.
308
.87 8766
85 30
I* H
N
RN
|
C
315
30A
C B - - C2
4?
H
-C 8
JW
IS
RN-
ip-C
28C 14 28A
L - G N - * - CN-
N.D.
4
N.D.
306
GV
GN R C
BN I N I HM I
I I I
1
3015/5450
RN
TARIFFS
Kl|| Kl||
Kl|
BN
309
1312
12
11
RN
RN
eT4
e
e-
311
TT
18
3
N -
To stalk unit
Marea-Marea
Weekend
Electrical system
Wiring diagrams
55.
;
Electrical symbols
Explanation to the wiring diagrams
Wiring diagrams
Key
Copyright
Fiat
Auto
page
1
4
5
141
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Marea - Marea Weekend
ELX
SX
NAME
1370
1581
1910
TD-75
1910
TD-100
1581
1581
c.a.
1747
HLX
1910
TD-100
2387
TD
1747
1998
2387
TD
7 7
9 9
11 11 11
11
11 11 11
11
13 13
13
13
Fiat Marea
Courtesy light- Symbol illumination
15 15
15
15
15 15 15
15
15 15 15 15
17 17
17
17
17 17 17
17
17 17 17 17
19 19
19
19
19 19 19
19
19 19 19 19
21 21
21
21
21 21 21
21
21
23 23 23
23
23 23 23 23
23 23 23 23
-
25 25 25
Alarm system
29 29 29
29
29 29 29 29
29 29 29 29
31 31
31
31
31 31 31
31
31 31 31 31
33 33 33 33
33 33 33 33
IMOTE
The numbers in the table correspond to the page number of the relevant wiring
4F196N
Copyright
Fiat
Auto
VII 9 6 - U p d a t e
diagram
Electrical system
Marea-Marea
Weekend
Wiring diagrams
55.
Marea - Marea Weekend
ELX
SX
NAME
1370
1581
1910
TD-75
2387
TD
41 41 41
43 43 43
43
43 43 43
43
43 43 43 43
45 45 45
45
45 45 45
45
45 45 45 45
35
37
41
Fuel level gauge and reserve warning light - Handbrake on and low brake fluid warning
light - Speedometer - Total mileage counter/trip recorder and reset button - Coolant temperature gauge - Low oil pressure warning light - Front brake pad wear warning light - Seat
belt warning light
1910
TD-100
41
Windscreen wash/wipe - Rear window w a s h / w i p e - Electric horns - Heated rear window Headlamp washer
Headlamp adjuster
35
37
1581 1747
c.a.
35 35 35
37 37 37
39 - 39
41 41 41
35 35 35
37 37 37
39 41 41 41
Electric sunroof
1910
TD-100 1581
HLX
35 35 35 35
37 37 37 37
-
41
67 67 67
Starting - Electronic ignition and fuel injection - Recharging and warning light - Low engine oil pressure warning light - Fuel injection fault warning light - Rev counter
69 71
Starting - Electronic fuel injection - Recharging and warning light - Low engine oil pressure
warning light - Heater plugs warning light - Fuel injection fault warning light - Fuel preheating
Starting - E.G.R. control - Fuel injection control - Plug preheating and warning light Recharging and warning light - Low engine oil pressure warning light
67
67 67 67
67
71 71 73
80/21
80/25
67 67 67 67
73 75
80/21 80/23
-
80/23
NOTE
70/1
The numbers in the table correspond to the page number of the relevant wiring
diagram.
4F196N
I X - 9 7 - Update
Publication
no.
506.763/07
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Electrical symbols
Side lights
Choke
lg.switch discharge
Water in fuel
filter
Heated seat
to
Dipped headlamps
Direction
indicators
with central door lock-
Plug preheating
ing
Turbocompressor
pressure
Seat belts
Heated rear w i n d o w
Handbrake on and l o w
brake fluid level
/Heft indicator
/
Front fog lamps
A.B.S.
(O)
Brake pad
wear
Hazard
mill!!!!
<-^>
Indicators
()
Handbrake on and l o w
brake fluid level
Electric horns
()
&
Right indicator
Turbocompressor
pressure
Windscreen wiper
Electric sunroof
120
Km/h
Speed limits
Catalytic
temperature
Recharging
Fuel gauge
Resistor
J ,
Coolant
temperature
converter
Diode
P4F001N01
Copyright
Fiat
Auto
Electrical system
Marea-Marea
Weekend
Wiring diagrams
55.
Electrical symbols
'0
Differential lock
Bulb
Electronic injection
Fuse
Temperature
Brake
fluid
level
(Japanese version)
Anti-theft device
Selector
switch
Doors open
Electric w i n d o w s
Button open
Earth
BRAKE
Switch open
Coil-operated
(relay)
switch
SPORT
Motor
Transistor
Rear w i n d o w wiper
Air Bag
Pulse
(Timer)
generator
Analogue clock
A.B.S. (Japanese
version)
Digital clock
W'screen wash/wipe
Speedometer
Rear wind.wash/wipe
Windscreen wiper
Rev counter
Headlamp washer
ANT I
LOCK
STOP
Publication
no.
506.763/01
Marea-Marea
Weekend
Electrical system
Wiring diagrams
55.
Electrical symbols
388
Digital speedometer
iiiiiiiiiii
a u
Econometer
Digital
gauge
if
engine
coolant
iiiiiiiiuiii
E3
Voltmeter
4F003N
Copyright
Fiat
Auto
Electrical system
Marea-Marea
Weekend
Wiring diagrams
55.
Explanation to wiring diagrams
177
179
11
10
RR
nrri
R M
96
10
<x
< r
C3
C3
co * in oo
X
l
T ,
13
LTJ
40
Ljjj I II
94
181
R CB
AR
N.D.
RN
-AB
R | R
AR
BR-
I9
1
( 11
C -
"io
LR-
L. 2
6- le
ii
N.D.
1
176
-NZ-BR--
!-(. 3
( 13
ARAR-
>II
4
14
"il
e-15
L(. 6
~24
B-
( 16
-NZ--
-( 17
M
-RVRN
N,D,}
N.D,
LR
(. 18
B
. 27
95
, 28 -{ 10
IRVr
-RVLR - L R
NN
N.D,
c-*-c
r-,
I 15/54
15/54 I
30
50
Int/n JI pos
DOI lnt/a
Int
staz^
;
178
Key to references
A Component number
B Connection number
_
V M
Z ,
;
12
180
[ub/ication no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Versions with Check Panel
Side lights and warning lamp - Dipped beam headlamps - Main beam headlamps and warning light - Number plate lights
11
|Q
3><
DEE
GL
|D
ID
10
N.D.
-HN-
<k
AV
AB
[T
4567
4-+R
2-fe-
70 t
. 1
16 (*)
Ei;
1 2 3 4 5
E.
HR L R G
N.D.
C CB-
I N.D,
LBLB-
GL AB
86
i-g-
5 6 7
30 85
-i-f tr
N
N,D.
I
R -
ll
3
GR
N.D.
HN
H VN
8787o
GN
EE3Tr
G V
- G V ^ GV- V 1 V -
N N
AV
1
\l
l
GV G
GL A V
SOP;
3
13
-MN-
GV
ID |D
El
LE M R
ijj LXJ
VN
N 1>
ij
HN
3 R R
J7TTT
<r <c <c <x
CD O CD O
cn
\o co
6-&-LB3-^GN-CB-CB-
LTJ
HL HB
17 0 0
-AG A G -GV GVAG | G
N.D, C B
J GN|GR H L HB
GN
GRiHL!HB!
S-GN
IT T ' f l
I 15/54
15/54 I I
LR
G V AG
I lnt/o
GN
GN HB
L B GL GR G V H L
frj? tj?
1 2 3 4 5 6 7 8
AV
-GRp
12 18
I
-. N
236B
(*)
--HB
HL-_
-NZ-
16
(*>J> (pQ)
7 42 22
12
|STOP|
TD
-;oo;- --GN-
(.____- ~ T
"I
[-.
.STOP
n
N
N !
NZ
18 X
HL
N
i
! N HL !
| ] ci
14 QW)
HB
^ N HB J
Fiat
Auto
GRHOv-
C W j 15
X 19
Copyright
C IT
NZ
->o;-
-(g)-
rrrra
i'J
ft
-0-
Electrical system
Marea-Marea
Weekend
Location of components
55.
Fuse and relay unit
4D
MB 55.
HN n.d.
VN1C*
RN 120A
Z13
RNad.
AN 70
AV70
*H13
V13*
HON
GN120Bg]gr]
T7i
* R n.d.
HR 5
H45
HR4F
HR7B*
Lad.
* LR 7B
N 42
G12B
<| J
P4F007N01
>GV70
Side lights and warning lamp - Dipped beam headlamps - Main beam headlamps and warning light - Number plate lights
HB4D
Key to components
1
2
3
4
5
6
7
8
9
10
10A
11
12
13
14
15
16
17
18
19
22
28
42
70
236
7Q
AV 6 C
G4D.
AG n.d..
N1Q0B.
N100A
_N10OB
N10OA
Z 120B
* AB4D.
GL 1A _
GV 13.
M 29.
AR 120B _
Cn.d.
N100B.
NXB_
NKXDB
AN AC
N 100B
4F0Q6N
Publication
no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Versions without Check Panel
Side lights and warning lamp - Dipped beam headlamps - Main beam headlamps and warning light - Number plate lights
11
3-R-
\<"^>
Ll Al
ID -> I D
<=> O
~
If A
HN
10
HJ LJJ tjj
VN
ID
|D
A AJ
LIJ
M R
AV
5><
GV
13
-AB1 ( GV V- V1
AV
N
,AB
HN
N
Pi
VN
87B7a
30 85
7a 30
85
R
m i
2 3
4
5 6 7
4 5
T J
N.D.
2-fe- R
HR
N.D.
86
(0)
HR
R R
LTJ
6-g-LB-
N.D.
LBLB-
3-g-GN9
10
GR HL!
GR|
HL
HB GN
HB!
Er
1 2 3 4 5
m HR LR G
LTJ
N.D.
IGN
-CB*-CBGN
N.D. |
C CB-
GN
N.D,
16 (*)
17 (*)
-AGAGAG | G
GV
-GVGV-
N.D,
N
^ 2
Int/Q
GN LB
^ 2
pos
GRP
(H 10)
C Y
tUfLLl
236B
42
T D
22
0-1
=oo;-
-GR-
>0c
HL
N
18 4
14
HL
HB
N
HB
19
315
Copyright
Fiat
Auto
Electrical system
Marea-Marea
Weekend
Location of components
55.
4Q
MB 55.
4D
HN 1A
VN1A<
RN 120A
AN 70
H13
AB13.
Z13
RNn.d
AV1A
g]GN171
V13
4F
GN120B
AR 238B
AR 66
HB15
HR 5
45
H
LR7B
G12B
4Q
Marea
u s ea n c
RN 264.
HB 236B
re
' '
AR238B
AR 66
GN16
Key to components
1
2
3
4
5
6
7
8
9
10
10A
11
12
13
14
15
16
17
18
19
22
28
42
236
RN 107B
RN 107A
Marea Weekend
1J
RN107B
RN 107A
RN 245
av u m t
A 17
Side lights and warning lamp - Main beam headlamps and warning light - Number plate lights
A 17
RN 265
* R n.d
HR4F
L n.d.
N42
HR 7B
H 4 C
AB4D
NZ 8
MB AD
V2A
H2A
Publication
no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Front fog lamps - Rear fog
lamps
30
10
111111
31
R -
<E
11
CD
<r <c
o o o
so co
R
N
M
RR'
N.D.
Mr
N.D,
87 30 85
127
N.D.
* N
N.D.
32
# 2 9
33
R R
70
rrpn
86
GV
LN
N.D.
a
M
MN I
m
2
-GN
N.D.
' H -i
LTJ
2 3 4
CB
N.D,
-
N.D.
LTJ
CB
X ! _ " H
HR
-GNGNH
|H
16 (*)
11
CB
11
J
1
L
-AGAG-
CHECK
GV
GV-
N.D.
GV
a,
HL
Q
|,_
AG
CB
GV
LN
HL
AG
HN
HB
.
1
15/54J
tff\l
Jt
c
16
--
28Ad^
IH
Hi
12
(0)
()
22
34
H
H
* H
N.D.
( ) Variant for versions without Check Panel
17
N 1
Fiat Auto
Copyright
HR
tST-
18
-(g)-
GN
<S>-
19
-040-
-0-
Electrical system
Marea-Marea
Weekend
Location of components
55.
4J
AG
4H
C ad.
70.
AN 23B
AN6B
RN 6C
RG6C
GN 69
AN7C
GN58
20
RV6C
22
* M 70
N8
MN 234
* R 33
M n.d.
LN 34
GV ad.
N ad.
M ad.
34A
lamps
LN32
HB
GL6B
Key to components
3
4
6
8
10
10A
11
12
16
17
18
19
22
28
29
30
31
32
33
34
70
N.D.
34B
ad.
N 22
MB 244B
GN ad.
HM 244B
* MN ad.
70
AG
RN
28A.
Z 34A.
ad..
S36.
G6C.
ad.
HRad.
HN a d .
HG ad..
HVad.
C n.d_
AR244B
N100A
N100B
N100A
Z120B
S120B
AV4D
4F012N
10
Publication
no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Versions with Check Panel
Direction indicators and warning lamp - Hazard warning lights - Braking lights - Reversing
lights
11
-Mill
r<: x<E x x
O
ro
<t
<:
iAN
55
159
El
BR
N.D.
AR
AN
3-AN-
^ 2
20
<ty
40
-AR-RNi_ N .
t"jv ?jv
1415
18
14
6 7
Mi i i is +rK
RN RG! AN!
RN RG AN R !
,
N.D, |
A RN
RN-
N.D.
AR
45
123
RN
13
A A
-ARAR
3- N
DID
ijj
N.D,
AN
||i
10
CD
vt> co
Il ijj llj
| 7 N.D,
A iBN B !
21
LR A AR LB
AN AB
a 1112
CLIHH
CB AR
AB
23
N.D.
-ABABj_
16 (*)
17<*)
N.D,
r-0-i
-0-
a fry I
i|jefj
-<8)
I 15/54 I
-RG-
C -CB-
YT
'fi
.11
i n t / a J pos
a,
LB
* EL
52
LR
AN
IE ^2
N N
2.
RG
RN
A AN
sjj
^2
10
11
1 2 3 4 9 10
M M
M
-AN
-0
ft
236B
(*)
- N
12
16
N Z
AN-RG-
-<8>-
NZ
500;
6-
-BN-N-
NZ
JL
41
4- 18
(*) Variant for Marea Weekend
Copyright
Fiat
Auto
()
For the 1581 automatic transmission version, see specific wiring diagram
11
Electrical system
Marea-Marea
Weekend
Location of components
55.
4Q
AB70.
AN 16
AR55
A n.d.
AV70
U)GN171
4
RN n.d.
GN 120B g
AR 107A
_.Rn.d. ess
R41*
[j
4Q
AN 16*
.
AR107A
MN 236B
MB56B
R n.d.
4H
RN264
Key to components
1
2
3
4
6
7
8
9
10
10A
11
12
13
16
17
18
RN 107A
^
use anc
re
' '
a vu n
'
C n.d.
AN 6B
* B17
B n.d /
RN 107A
lights
RN 107B
Marea
cs
R 236B *
Marea Weekend
P4F019N01
A17
RN 107B
AN 7C
RV6C
AN 23B
RN 6C
MN 234
Marea Weekend
19
20
21
22
23
40
41
55
159
236
N.D.
*| 3
SN 7 A
BR n.d
RN 98
V AC
H AC
RN 9 7
S7A
GV70
HB4D
4 F 0 U N
12
Publication
no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Versions without Check Panel
Direction indicators and warning lamp - Hazard warning lights - Braking lights - Reversing
lights
11
1
r x x r
<c *z
O
.*.T
A.
<r
O
TJ-
kD
3-R'
Mill
<z
O
co
, N.D.
159
ID
N.D,
-ARAR
|D
o|
RNRN-
T " 11
13
N.D.
A A
55
;o<6
BR
A N
AN
10
li ijj il ijj
.]
IAN
N (h
-AR-
N.D.
"
40
RN-
N.D,
N-AN-
20
21
LR A
AR LB
AN
AB
LIS-.
23
N.D.
-AB-AB-
17 (x)
16 (*)
N
f T
T
15/54'
J . 15/54
30
J.
50
'j'
Y Y 'f
N N
AN
10
11
R N
HOT
12
236B
._.
A
B
N
_7
+ J
NZ
-RN-
I?
41
(*) Variant for Marea Weekend
Copyright
Fiat Auto
( ) For the 1581 automatic transmission version, see specific wiring diagram
13
19
-F**
^8H
0-0
-0-
Electrical system
Marea-Marea
Weekend
Location of components
55.
4Q
u s eanc
re
* '
a vu n
'
4E
.AB13
AN 1 6 *
G R 6 6
GR17
. . _
Rn.d. c s
RN n.d *
A n.d.
AV1A
R 4 1 *
M B 5 6 B
gGN171
GN120B
R G 1 6
R N 1 7 *
Marea
Fuse and relay unit
4E
4(j
AN 16*
AR
238B
A R 6 6
HB15
A 1 7 *
HL
236B
_ | _ R n . d .
[caj
AR107A
MN
236B
RN107B
R 236B *
M B 5 6 B
R G 1 6
RN245
R N 1 7 *
Marea
Marea Weekend
4Q
u s ea n c
re
* '
a V un]
4H
R N 2 6 4 .
AR
HB
238B
236B.
AR
| p |
RN 107A
6 6
n.d.
AN 23B
AN 6 B
17 *
B n.d..
B 1 7
RN 2 6 5
Panel
G N 16
Direction indicators and warning lamp - Hazard warning lights - Braking lights - Reversing
Key to
1
2
3
4
6
7
8
9
10
10A
11
12
13
16
17
18
lights
RN 107A
AN 7 C
RN 107B
M N 2 3 4
Marea Weekend
components
Front left lights cluster
Front right lights cluster
Power fuse box
Fuse and relay unit
Instrument panel
Stalk unit
Front left earth
Front right earth
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Right/left front cables connection
Rear left lights cluster
Rear right lights cluster
Rear left earth
19
20
21
22
23
40
41
55
159
236
N.D.
12
SN25
RN97
4C
AB4D
14
Publication
no.
506.763/01
Electrical system
Marea
Wiring diagrams
55.
Fiat
Marea
illumination
;trH|l|l|l|l|lr-R-e
10
o o o o
11
O) ^
il
LIJ LJJ
M
CO
LJJ
BR
L_
N.D.
BR
- C CB-
N.D,
-GVGV-
10
C
15/54
5/54 J'
30
50
GV
,4, El
I In-t/c
Irrt/a
.
In-t
s W
-RN-
ll
4^
-RN12 3 4
CB
12
101112
RG GN
CB
i f|L-
ft
GN
GN GN
N.D,
1I
-GNGN
N
GN
a.
110
.11
[331
12 3
107B
GN
N GN
GR
-HV-
35
-HVN N
H
f
4 5 6 7 8
1 2 3 4 5 6 7 !
Oo
HV-
-HV HV-
11I
86
(III)
N.D.
RN
I 00600661
36
-HG-
-HGHG-
HR
t^28A
22
HR
HN
-HN-
(ZD
< I
HG-
I V
=1
-HG-
HR
4 f c 2 8 B
42
HR
HN I
87
-HR-
108
109
RNRN
HV
ip^2
244
RN
HN HR
RN
tjszjm
1 2 3
N.D.
BR
HG __BR BL
1 2 3
N N
7 1314
18
RN
245
15
RN
1
RN
Auto
'
in
N.D,
N N
-HNHN-
48
64
BL
-HNHN-
IN
58
-HRHR-
a
3-N
69
N.D,
N.D.
Fiat
(ZD
qn=i
Copyright
GN N
I I
N
L1
34
L-iL-
GR
RG|
IL
J65
243
19
Electrical system
Marea-Marea
Weekend
Location of c o m p o n e n t s
55.
4J
48A
70.
RG6C
*N22.
GN 69
GN58*
36
P4F027N01
Fiat
A n.d.
AG n.d.
Bad
Marea
Courtesy light - S y m b o l
Key to
illumination
MN n.d.
LR28A
components
HV28A
3
4
6
7
10
10A
11
12
18
19
22
28
34
35
36
42
48
58
64
65
69 Cigarette lighter
86 Rear cables/rear left door cables connec
tion
87 Rear cables/rear right door cables connec
tion
107B Front courtesy light
108 Rear left door lock
109 Rear right door lock
110 Front left door lock
111 Front right door lock
243 Luggage compartment light button
244 Integrated services electronic control unit
245 Rear courtesy light
N.D. Ultrasound-soldered joint taped in wirin<
loom
4F021N
16
Publication
no.
506.763/01
Marea
Electrical system
Weekend
Wiring d i a g r a m s
55.
Marea
Fiat
Courtesy light -Symbol
Weekend
illumination
r-HIIIII
10
<zo <
<c O
<=>c <z>
<z>
11
CO
SD OO
BR
l_
N.D.
BR
- C CB-
rrji
N.D.
-GVGV-
10
C
5/54 I
15/54
30
50
GV
CB
LS
-RN
GV
RN-
-RN12 3 4
in-t/tt JI pos
I livt/a
in-t
sto2
101112
CB
tftftJ
RG GN
CB
LjOTLU ft
ft
12
GN
GN GN
N.D.
-GNGNN
ELj32
110
GR
GN
[331
GN
GR
12 3
107B
GN N
RG |
N
JEE
121
34
si
-HV-
I^N
N N
-HV-
35
N
69
58
-HR-HR-
N.D.
HV-
-HVHV-
f~T1
d:^28A
22
-HG-
-I
-HNN H N
-HR-
108
236B
NZ-
-NZ^
RV-RN^
-RV RVBR-BR*BR
HV
HG
RN
N.D.
HN HR
, ,BR BL
N.D
RN-
RNN
1 2 3
I ->
-HG-
87
-HR
N.D.
BR
7 1314
RN
RN
244
18
264
Copyright
Fiat
Auto
17
265
19
65 C
HR-
109
-NZ N - i
RN
N NZ
1 2 3.
-HG-
42
H"
HN
HN
36
c^28B
HR
N.D.
HR
HR
86
CO
( I I I '
HN
N N
111
r-T)
0Q0660O
-HG-HG-
-HNHN-
IN
N.D,
RN
N.D,
48
64
BL
1 2 3 4 5 6 7
Oo
(ZD
LS
rr
4 5 6 7 8
[ i
243
Electrical system
Marea-Marea
Weekend
Location of components
55.
P4F031N01
Fiat Marea
Weekend
illumination
Key to components
3
4
6
7
10
10A
11
12
18
19
22
28
34
35
36
42
48
58
64
65
69
86
87
107B
108
109
110
111
236
243
244
264
265
Cigarette lighter
Rear/rear left door cables connection
Rear/rear right door cables connection
Front courtesy light
Rear left door lock
Rear right door lock
Front left door lock
Front right door lock
Rear cable/tailgate cable connection
Luggage compartment light button
Integrated services electronic control unit
Rear left courtesy light
Rear right courtesy light
236B ^
ear
c a D
t a
' / ''9
a t e
connection
P4F032N01
4F024N
4F025N
18
Publication
no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Radio system (high level: A D 1 8 5 H) - Cigarette
lighter
Location of
*r"HH 1111IH-
10
49
11
<c ^ < r
C5
CO "*J" sD CO
I ij H ijj
BN
RG
N.D,
50
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N.D.
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components
N.D.
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G 1
NZ
RG
SN
BN
El
BR
NZ
8685308787
RG
BN
35t
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Cjl3 36
SN
BN
NZ
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8 10 2
15
51
BN
r
5
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9101112
.01112
52
NZ
RG
G N
GN
L
c C
N.D.
A N
4 3 70
AG
N
AG
AG
C B
N . D . } } N.D.
22
AG
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42
AG
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pos
AR
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9 8
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69
48
BR
2 28B
AB
.
AG
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AR
12
54
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53
BR-AR
AR-
B R - H - B R- A R--
AG
1
AB
-n*
(*) Wiring for Compact Disc
()
P4FO34N01
4F027N
Copyright
Fiat
Auto
19
Electrical system
Marea
- Marea
Weekend
Location of components
55.
4|
N22
*|H4J
C B n.d.
AB n.d.
GN69*
CB7C
R48A
Cn.d.
28B
AR23A
GN48A
GN 58
asn
AG
48B
AB
AR
Ln.d.
488
48B
* AG 54
AB 54
AR53
BR 53
Ln.d.
HN n.d.
HRn.d
BR
48B
AV238B
L238A
P4F035N01
lighter
components
53
54
69
70
236
248
N.D.
AV28B
ZB67
N22
Rn.d.
GV78B
AG 67
AV78A
H110A
Nn.d.
A HOB
ZG76
CB73A
The cables involved in the wiring diagram are marked with an asterisk.
4F028N
20
Publication
no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring d i a g r a m s
55.
Radio system (medium level: A D 185 M) - Cigarette
lighter
Location of
*rH1111IH10
L
R-E
49
11
BN
RG
N.D.
N.D.
-RG-
BR
N.D.
-SN-
-BNi
RG
BN
NZ-
N.D.
NZ
SN
El I d
BR
frl
RG
BN
50
NZ
SN
H LJJ H i j j
NZ
SN
8685 308787
35t:
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NZ
LU
TT1
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15
51
BN
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8 10
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CB-W- -
B | El
2
NZ
SN|
52
9 101112
1112
GN
C C
AN
t 70
N.D.
AG
N
AG CB
N.D.f
{N.D.
(N.D.
AG C
22
AG
142
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m
GN
AG
Ll
I 15/54 I
30
50
in-t
staz
R
GN N
45678
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69
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Oo
CQJ
SN RG
NZ BN
Ll
rrr
33L
OODDDD 1
B DuOODO
J
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f i i i )
48
12
Copyright
Fiat
Auto
21
components
Electrical system
Marea-Marea
Weekend
Location of components
55.
4|
4J
CB
n.d.
AB
n.d.
GN69*
CB7C
C
35
* R 48A
n.d.
AR 23A
GN48A
GN 58
HV
/ /
n.d.
MN n.d.
AV28B
ZB67
N 22
R
n.d.
GV78B
A G 67
lighter
Key to components
3
4
10
10A
11
12
22
35
36
42
48
49
50
51
52
69
70
N.D.
CN 244A
AV78A
H110A
N
n.d.
A110B
ZG76
CB73A
70
> AG
ad.
HR n.d.
HN n.d.
HG n.d.
HVad.
Cad
AR244B
S120B
22
Publication
no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Electric front
windows
11
-Hiiiiih-f
10
x x x a
77
CO
<=>
T T
C ? C 3
CO
-ZB-BR-
M R BR
76
|HM--ZG-
ZB
36
-BR; 1
GN-
-BV-
c -
-SB-
|N,D.
74
t :i
-ZB
r.BR-GN
- C
-SB-
M
IN
'
^
-SB-
73
244
-CB- R -
-ZB
-BR-
-CN-
35
-RVN.D.
N.D. R
R - i - R
-BVCBi
-RN-
-RN-
-RN-
-ZG
-BV-
CN-
-CN
KV-
-RV
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72
) N.D.
El
LR
BR i
8685 308787
- C CB1 2
N.D.
CB-
C AG
I 15/54
15/54J .I
50
in-t/nJ I pos
. Int/a
int
staz
234
5' ~
86
-AG
30
Copyright
Fiat
Auto
N.D.
1 X
14
1
T
H
_|
12
-SB-
-ZG-BV-CB-CN-
AGAG-
GN-
-3- c
LU
N.D.
c c
23
-LR-
-LR-
1
2
3
4
5
6
7
8
- 9
10
-RV-
- N -
20
-LR-LR-
11
12
13
14
15
16
17
18
19
Electrical system
Marea-Marea
Weekend
Location of components
55.
35
HV 28C _
HV n.d.
AV28B
ZB67
N22
And.
R n.d. *
ZG 2 4 4 A
GV78B
Bad.
AG 6 7
* C B 244A
BV 244A
C N 244A
AV78A
H110A
N ad.
A tlOB
ZG76*
C B 73A *
20
Electric front
windows
Key to c o m p o n e n t s
3
4
10
10A
11
12
22
35
36
42
72
73
74
76
77
244
BN TUB
MN n.d
LR28A
HV28A
H trlA
_
N74
A111B
AG 68
MN 68
24
Publication
no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Electric rear
windows
78
t " - r l l l l l l H - " -
10
-AV-
T T T X
^ < c < c <c
<=> o o o
CO
CO
85
-BR-
-ggaj
-ZB-
I! LJJ ij H
- C -
M R
83
-AN
-GV-i
N.D.c
N.D,
AV-
-BVZG-LVNlRN-LN-
ZG-
N.D.
82
|N.D.
28B
86
-BVd
-AV
-AN
, N i
-GV
-GN-P
ANGV-GNR-
-GN-
84
87
35
-BV-ZG
-LV-N
-RN-LN
GV-GNAV-ANL L
N,D,
-RN RN-GV
-GN-AV
-AN- L
-RN
BR-ZBBN-
-BR
-ZB-BN
RN-BV-
-RN
-BV-
BNlRN-
-BV-
238
N.D.
-BR-ZB-BV-ZG-
-LV-RN-
-GN-GV-AN-AV-BN
BV-LN-LV-
-LN-
80
AR-
N.D,
^7
Iff
N.D,
L.
C CB-
M
1
15/54
lnt/n
nn-;
lnt/a I' pos
stoz
244
T1 4
^_
12
22 18
81
Copyright
Fiat
Auto
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
N.D.
Tffl
25
A .
:
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Electrical system
Marea-Marea
Weekend
Location of components
55.
28B
35
HV28C.
HV n.d.
AV 28B
ZB67
N 22
Electric rear
R n.d.
windows
GV 78B
Key to components
3
4
10
10A
11
12
18
19
22
35
78
80
81
82
83
84
85
AG 67
AV 78A
H110A
C B 73A
H n.d
RN n.d.
HR 28B
26
Publication no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring d i a g r a m s
55.
omnium--
<r
o
[l370l
140
11
Nin
10
|15811
195
|1747|
160
|1998|
190
L
> 6
!
1
GV
BR
20 23
12 31 48
LS H
HT
GV
AB GV
47 55
1
GV
BR
BR
BR
CO
L^J
LEJ LIJ
R M
GV GV N
GV I GV
AB BR BR
N BR f BR
] 55A
139
GV
237
148
N.D.
c c
Ll
N.D.
-CB-
C CB-
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-RN-MN-
R RN -
N.D.
i
131
2 13
13
LB
CB
CB
199
} N.D.
'15/54 '
30
50
r-,
LS
1
M N
r-n
17
12
Copyright
Fiat
Auto
27
components
Electrical system
Marea-Marea
Weekend
Location of c o m p o n e n t s
55.
Front left/engine cables connecti on
GV131.
* MN
131.
N148.
GV140
* N 148.
N148
* GV 195
1581
131 B Fiat
light
GV 160C
*N148_
* GV 190.
1747
1998
components
Power fuse box
Fuse and relay unit
Instrument panel
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Front/left engine cables connection
Fiat CODE electronic control unit
Diagnostic socket for injection
Fuel injection/ignition control unit (1370)
Earth for electronic fuel injection
Ignition/fuel injection electronic control
unit (1747)
Ignition/fuel injection electronic control
unit (1998)
Ignition/fuel injection electronic control
unit (1581)
Aerial for Fiat CODE system
Fiat CODE system fuse
* C B n.d.
* GV55A
N55A
1 39
1747
BR 1 4 0 .
BR 1 6 0 C .
N 148.
N148.
BR 195
N n.d.
AB195
The cables involved in the wiring diagram are marked with an asterisk.
28
Publication
no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Alarm
system
t~ l l l l l l
N
10
103
TP
<E
CO
CD
11
Ii
it
106
CD
CD
NZ
105
NZ
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M
BR
N
N
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N.D,
N
BR
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10
T T T
5
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11
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28B
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36
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22
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86
N H
N IN
I NI
N-
243
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R
- --RN^--RN
19
Copyright
Fiat Auto
109
N!
18
-HN-
42
iRV RN
29
87
-HR
HR-
Electrical system
Marea-Marea
Weekend
Location of components
P4F055N01
Alarm
system
Key to
components
3
4
8
10
10A
11
12
18
19
22
28
34
35
36
42
70
86
87
100
103
105
106
107A
108
109
110
111
236
243
4F04SN
30
Publication
no.
506.763/01
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Central door locking
system
11
j-'-HIIINH 1
10
110
( , )
(g
N N
<o
l i L|J
CO
ijj LJJ
M R BR
35
n Li
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113
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10
T
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11
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nos
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54 JI
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2 3456 7
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N.D,
22
36
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N.D.
in
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LH
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100
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2
70
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it
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108
86
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G
G
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6 8
14 16
7
13 15
15
87
109
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(*) Variants for Marea Weekend
Copyright
Fiat
Auto
31
zip
Electrical system
Marea-Marea Weekend
Location of c o m p o n e n t s
55.
35
HV28C
CN 244A
AV78A
H110A*
N
n.d.
A110B*
ZG76
CB73A
36
P4F059N01
system
components
BN TI1B *
H1t1A
A1t1B
AG 68
MN68
32
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Electrically-adjustable and heated external rearview mirrors
L o c a t i o n of
11
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Fiat Auto
18
22
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42
33
components
Electrical system
Marea-Marea Weekend
Location of components
55.
35
HV 28C . ^
HV n.d.
C28B
CB
AG
244A
67
BV244A
CN
36
mirrors
244A
Key to components
3
4
10
10A
11
12
18
22
28
35
36
42
66
67
68
234
N 68 *
A111B
AG68
MN 6 8 *
34
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Electric sunroof
Location of components
*T"-H 1111IHL
10
11
<c
CD
<r <r
CD
CD
CO
VD oo
ro
91
R BR
92
CD
87 87 30 85
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86
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86 85 30 87 87
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N.D,
15
T
6 8
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12
18
U
93A
35
Electrical system
Marea-Marea Weekend
Location of components
55.
4C
u s e
a n c
r e
' y
u n
'
28C
MB 55
RN 120A
AN 70
CB7D
28
Ln.d.
Lad.
HN ad.
HRad.
R92
HG ad. _
70
Electric sunroof
Z34A_
RN n.d.
C28A
Z 36
Key to components
3
4
10
10A
11
12
18
22
28
70
91
92
92A
93A
244
N.D.
N100A
N10OB
N10OA
Z120B
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HR ad.
HN ad.
HG ad.
HVad.
C n.d.
AR 244B
91
S120B
AV4D
AN 4C
N100B
02
* AG n.d.
R n.d. *
N 22
36
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Headlamp
adjuster
Location of
43
44
11
10
'
'
m i
<z
<c <z
<0
o
n o
* e
o= <oo=
LTJ
NZ
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13
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N.D,
NZ
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:HB-
G G
HBH
^ 7 0
1E 3678
N.D.
R
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8787a
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30 85
HR
R R
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N.D.
5 7
86
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m
&
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LB-
123
LU
HR LR
H
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N.D.
.Ll
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LU
I lnt/a J pos
int
s-toz
I mt/a
DOS
12
NZ
ft
NZ
LR
AG
if
45
42
37
components
Electrical system
Marea-Marea Weekend
Location of components
55.
Fuse and relay unit
4P
AB13
RN n.d.
* HR 5
H45
An.d.
AV1A
* LR 7B
ON 171
GN120B
4J
\g\\\
G12B
AG 7 0 .
RG6C
* R n.d.
GN 69
HR4F
HR 7 B
L
GN58
1 J
Headlamp adjuster
n.d.
N42
Key to components
BR n.d
RN 98
V4C
3
4
5
7
8
10
10A
11
12
13
42
43
H4C
RN 97
S7A
GV70
HB4D
43
45
H 4F
H4D
NZ 4 2
G70
* The cables involved in the wiring diagram are marked with an asterisk.
4F060N
38
Publication no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Heated front
seats
H11111
RE
19
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<r
x t
CD
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11
CD
R BR
91
El H
86 85 30 87 87
1 2
Ia
263
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87 30 85
86
AG
N.D.
R R
N.D,
R
R R
15
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3-3
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AN-
AG
AN
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3 70
AG
AG
AG
N
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AG
22
AG
Ll
30
5/54
II
15/54
50
135 r.
134
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DOS
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s-toz
K
12
N
134A
135A
18
4F063N
1-97 - Update
39
Electrical system
Marea-Marea Weekend
Location of components
55.
Dash/
28 B
ON 35
QV 35
AN 35
AV 35
ON 2366
GV 2386
AN 2386
L ad.
Lrvd.
AV2386
L23BA
70
Z 34A
RN ad.
C 28A
Z 36
N 1O0A
N1O0B
NWOA
Z 1206
AG ad.
HR ad.
HN ad.
HGad.
HVad.
C n.d.
AR244B
91
AN 4 C *
N 1006
1 34
e a r
c a D
e s
^
' / d r i v e r ' s heated seat cables
connection
A G n.d.
Key to
components
R ad.
3
4
10
10A
11
12
18
22
28
70
91
134
R n.d.
*|
22
joint
taped
L n.d.
N.D. Ultrasound-soldered
wiring loom
263
18
in
* The cables involved in the wiring diagram are marked with an asterisk.
40
I - 97 - U p d a t e
Marea-Marea Weekend
Electrical system
Wiring diagrams
55.
Air Bag and pretensioners and fault warning
light
Location of components
P4F078N01
P4F077N01
4F066N
Copyright
4F067N
Fiat
Auto
41
Electrical system
Marea-Marea Weekend
Location of components
55.
e
114
'
e c t r o n
'
control unit
BR 130
NZ130<
V239
* VN 239
115
117
B g / d a s h b o a r d cables connection
* C114
G TI4
* GN 114
C 6B
1 30
133
s t e m
u s e
light
components
Power fuse box
Fuse and relay unit
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Left dashboard earth
Air Bag electronic control unit
Passenger's Air Bag
Driver's Air Bag
Air Bag/dashboard cables connection
Diagnostic socket for Air Bag device
Air Bag fuse
Clock spring connection
Air Bag/left pretensioner cable connections
Air Bag/right pretensioner cable connections
Left pretensioner
Right pretensioner
Ultrasound-soldered joint taped in wiring
loom
* BR 114
NZ114
231
Clock P i 9 connection
116
239
* V 114
116
VN114
LN114
The cables involved in the wiring diagram are marked with an asterisk.
42
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
W i n d s c r e e n w a s h / w i p e - Rear w i n d o w w a s h / w i p e - Electric horns - Heated rear w i n d o w - H e a d l a m p
washer
98
99
25
97
46
47
A.
i i r
30 P 31
RN
N N N
o
n
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co
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pi
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(RN.)
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87 85 86
8685308787
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(VN*) |
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8685308787
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ti
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N N N
SG
1110
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RN
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14 13
N,D,
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5-3HN5 67 8
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T T
AG
HL
LN
MN
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MN
c - * - c
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Vll-96 - Update
43
LU
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4=
253
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-MN-
244
AR
|CB
236B
9
10
11
12
13
14
15
16
17
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cf:3 28C
22
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CB
AG
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fe
26<x>
Electrical system
Marea-Marea Weekend
Location of components
55.
Stalk unit
Stalk unit
7D
CB 28C
C L 28C
H24
HN24
C n.d.
HG24
LN4I
GV24
1 3
LB 23A
SN13*
SG n.d
BR
n.d.
V4C
H AC
SN25
RN97
S7A
GV70
HB4D
28C
34A
Switch unit
[^1 H V 2 7 0 _ .
C L 236B
LN32
HB n.d.
* CB 236B
MB 244B
P4F083N01
RV92A
Z 70
washer
* HM 244B
HL7C
NZ56A
Key to
3
4
7
8
9
10
10A
11
12
13
18
19
22
24
25
26
28
34
components
MN n.d
CB7D
236B ^
ear
c a D
t a
' / ''9
a t e
connection
CB26
CB 28C
NZ 18
NZ n.d
G261A
RV244C
HB4G
N18
MN4E
RN 244C
HL4E
MN39
N 39
HB15
CL
H261A
R ad.
26
44
Publication
no.
506.763/02
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Fuel level gauge and reserve w a r n i n g light - Handbrake on and l o w brake fluid w a r n i n g light - Speedometer - Trip
recorder/total m i l e a g e counter a n d reset button - C o o l a n t t e m p e r a t u r e gauge - L o w engine oil pressure w a r n i n g light Front brake pad w e a r warning light - Seat belt w a r n i n g light
11
88
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182
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22
Electrical system
Marea-Marea Weekend
Location of components
55.
Instrument panel
6A
,
AG n.d.
LN55
2387 CN 55 _
BN88
Instrument panel
6B
MN 293 [2387|
BR n.d.
BR 89
2387
HN 269
HN55.
1747
MN 131
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CL 55
HG55
MG55_
2387 HM55
HL 120B
CN55
[2387]* C B 55
RV95
/
C117
R41
* HG 28A
GL34A
AR 55 [2387]
AN 4H
* N22
HB55*
28A
RVad.
RVrvd.
HR244C
HN 244C
Bnd.
BR
P4F087N01
28C
66
HV 270 _
components
Power fuse box
Fuse and relay unit
Instrument panel
Front left earth
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Front righ/left cables connection
Rear left earth
Left dashboard earth
Dashboard/rear cables connection
Front left/engine cables connection
Fuel gauge sender unit
CB7D
70
Z34A
RN n.d.
C 28A
Z 36
70
88
89
89A
AG
N100A
N100B
N10OA
Z120B
n.d.
HR n.d.
HN n.d.
HG n.d.
HVad.
Cnd.
AR244B
AN AC
N100B
V I I 9 6 - Update
46
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Instrument panel connections
| 1581
10
11
BR
1370
"i
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| 1747
1998
160
190
140
137
42
158
HR N
LN
LN
J
BR
LN
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142
182
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262
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BN N HN AN
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1 2 3 4 5 6 7 8 9 10 11121314151617181920
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47
N N N
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131
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go
22
Electrical system
Location of components
55.
gy^
6B
Instrument panel
Instrument panel
A G n.d.
BN 28A
LN 55
GN n.d. *
* BN 88
LB n.d.
C117
HG55
R4I
HM55
A 4H *
HG 28A
HL 120B
CN 55
GL34A
RV95
* L 55
28A
GR58*
HN 2 6 9
HN55
AN 4 H
N 22
HB55*
GR6C
BN6B*
HL6C
HB6C
28C
Instrument panel
Key to
3
4
6
8
10
10A
11
12
13
22
28
34
55
56
58
70
88
89
89A
90
95
114
117
120
131
HG 6B
RVad.
HR 244C
HN 244C
B ad.
Gad.
@
BN 90
HG56A
HB15
BV270 c s
HL 14
GR17
GN16
H ad.
AG 66
ZB
BR
66
66
connections
[csl
HV270
components
137
140
142
143
158
160
181
182
182A
190
195
253
262
RV92A
NZ 56A
CB 7D
70
N100A
N10OB
N100A
Z120B
* AG ad.
HRad.
HN ad.
HGad.
HVad.
C ad.
AR244B
S120B
AV4D
48
Publication
no.
506.763/01
Marea-Marea Weekend
Electrical system
Wiring diagrams
55.
Check panel
connections
40
m
E33
ID ID
AR
13
RN
GL
L_
-GV-
-GV-
N.D,
GV
GL
70
RN
CHECK
jji.
GV
GL
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RVi
I 3 5 I
1
1-3-RG
4 I 6
I 11 I 13 I 15 I 17 I
10 12 I 14 I 16 I 18
RV GN HB
111
HG HN
RG
I GL GR GV HL RN
HV HR AV
|_
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N.D.
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HR
HN
28B
42
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87
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109
17 <*)
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236B (*)
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243<*)
19
Marea-Marea Weekend
Electrical system
Location of components
55.
28A
ZB66
HL6C
HB6C
Marea
Dashboard/rear cables connection
_M6B
.C70
BR
HB6C
66
Marea Weekend
Dashboard/front cables connection
70
Z34A
RN ad.
N100A
N100B
N100A
Z120B
C 28A
Z36
AG
Check Panel
Key to
1
2
4
6
8
9
13
14
15
16
17
18
19
22
28
35
36
connections
HR ad.
HN ad.
HG ad.
HVad.
C ad.
AR244B
components
40
42
70
86
87
108
109
110
111
236
243
ad.
86
S120B
AV4D
G108A
LV82
H 108A
HN 108C
RN 82
BV 84
LN 82
ZG 84
N18
ZG238A
N 82
LN 238B
N 108C
BV 238A
H n.d.
RN n.d.
HN 28B
50
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Thermostatically-controlled air conditioner/heater (1370-1581 engine)
rxxT 3-
260
IIIIII-11
LIJ Ljj li ij
10
115811
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87 30 85
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23
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AG
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195
1581
140
1370
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147
22
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232
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202
51
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55
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253
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249
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258
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207
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259
202
11.
12
256
206
AR
12 3 4
255
209
RN-
254
Electrical system
Marea-Marea Weekend
Location of components
55.
Front left/engine cables connection
HB 6 A
HM6A
AR4D
L 6A
CN6A
RN12A
C n.d.
LN6A
B4D
RN145
C n.d.
LN 140
55
1581
'
C n.d.
NZ6
RN145
C n.d.
LN 195
HN 6A
HG 6A
S121
engine)
AUTO
components
connection
211
222
232
235
244
249
253
254
255
256
258
259
260
Anti-frost sensor
Air conditioner earth
Compressor air conditioner
Air conditioner compressor cables connection
Integated services electronic control unit
Climate control diagnostic socket
Climate control unit
Climate control system controls with car interior
temperature sensor
Climate control fan speed electronic variator
Air mixer control actuator
Treated air temperature sensor
Switch for required temperature adjustment
"MAX-DEF" microswitch
HL 6A
* AR70
AN a d .
VG121
1 2*7
1370
1581
SVG253B
C B 253B
g ] AB n.d.
GN
n.d.
B 253B
K*T1
LN
ad.
L128
MN 55
LN121
RV55
* AN
ad.
AR128
L122
MN 124 *
52
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Thermostatically-controlled
(*)
Copyright
CD
CD
CD
io oo
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engine)
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CD
Fiat Auto
53
Electrical system
Marea-Marea Weekend
Location of components
55.
55
1747
AB122
MN124*
Cn.d.
LN6A
l
NZ 8
A 121
HN 6A
HI SI
70
MB4C
B 4D
RV124
HG 6A
A G 212
S 121
AG123A[]
AR159
HM n.d.
H
AN 160B
M 147
MB 257
G160C
.LR160A
S160C
A G 160B
HG142
HN 143
N137
BN159
Rn.d.
Cad.
LN 160B
C 28A
z 36 .
Z34A
RN n.d.
HQn.d.
HVrvd.
C n.d.
AR244B
1 20B
c o n c
'' '
o n e r
Z70.
AUTO
components
235
244
249
253
254
255
256
258
259
260
cables connection
GN4D.
HL 6A
S70*
* AR70
AN r u t .
VG 121
*^VG253B
GN n.d.
C B 253B
* \ \ A B n.d.
120 AAir
1 24
B 253B
1747
L N n.d.
RN4C
AN n.d.
R n.d.
RV 55
MN 55
54
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Thermostatically-adjustable
(*)
Copyright
engine)
Fiat
Auto
55
Electrical system
Marea-Marea Weekend
Location of components
55.
55
HN6A
HG6A
AB120B
70
N191
MN127
AR159
HM n.d.
HB158
BC190
M147
CN n.d.
MB 250
H189
MB 4 C * L R 1 9 0
S 190
GR 191
B190
HG142
HN 143
RV127*
N137
S 121
BN 159
RN 145
C n.d.
LN 190
N 100A
N100B
N100A
Z120B.
*Z36
HGad.
HVad
C ad.
AR244B
120B
Thermostatically-adjustable air conditioner/heater (1998
Key to
3
4
6
10
10A
11
12
22
36
55
68
70
120
121
124
127
147
190
202
206
207
209
211
222
AN4C
N 100B
engine)
components
232
235
244
249
253
254
255
256
258
259
260
Compressor earth
Air conditioner compressor cables connection
Integrated services electronic control unit
Air conditioner diagnostic socket
Air conditioner control unit
Air conditioner controls with car interior temperature sensor
Climate control fan speed electronic variator
Air mixing control actuator
Treated air temperature sensor
Required temperature adjustment switch
"MAX-DEF" microswitch
S70
AR70
AN a d .
VG 121
[]VG253B
CB253B
GN n.d.
[ajt] AB a d .
1 27
B253B*
1998
L126
MN55
* LN n.d
* RV55
AN n.d.
AG ad.
AB121
AB123
AR123
AN n.d.
RV124
LN124
L122
MN 124
56
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Versions with air conditioner
Engine cooling system - Engine coolant gauge (1370-1581
engine)
Location of components
11
& R
<r
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frfl
li l]jJ II Lj
172
123A
170
10
i n oo
IIIMI-NH
154
87 30 85
BN
BR
86
N I R
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BN
BN
AR
BNi-- BN
R - J - R
BN
129
i-L-
| |
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126
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128
L
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122
El
8685308787
BR
158
LU
87 30 85
IT
HB
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86
87 30
it 1.1.1. li
AB I AR I AG
AN
N
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123
121
AG
AN-
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AN
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14 1
HB
c-? 5 5
127
AB-R-
HB-
-AR
L - - - L
ARAN
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AN
N
CB AG
{ N.D.
{ N.D.
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70
C AG
22
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DOS
30
50 lirt
staz
r
HB
N R
1111
14 17
12
Copyright
Fiat
Auto
57
Electrical system
Marea-Marea Weekend
Location of components
55.
55
1370
MN 127
HB 158
M147
MB 250
Rad.
LN 6 A
B4D
S140
HG142
HN 143
N137
BN159
55
1581
RN 145
. C n.d.
.LN140
RN 145
Cad.
HG 6A
S121
*| 27
LN
195
1370
engine)
[ j a n ] LN a d
1581
Key to
3
4
6
8
10
10A
11
12
22
55
70
121
122
123
components
Power fuse box
Fuse and relay unit
Instrument panel
Front left earth
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Left dashboard earth
Front left/engine cables connection
Dashboard/front cables connection
Three-stage pressure switch
Engine cooling fan low speed relay
Engine cooling fan high speed timer
L128
joint
taped
MN55
LN 121
A 121*
1 26
* A B 123
* AR 123
* AN a d .
RV124
LN124
1 23
L122*
MN 124
1370
1581
in
AR 123A
* L ad.
*L127
* AR 127
58
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Versions w i t h air conditioner
Engine cooling system - Engine coolant temperature gauge (1747 engine)
11
lllllr-i
10
CD CD CD
l O 00
li
ijj
il LJJ
BR
Location of components
154
123A
170
"I
87 30 85
122
86
87 30 85
86
AG
AB
J
N.D
-j N.D.
129
K I
#
El
128
c t b
L
El
8685308787
BR
N.D,
DTJ
-13-8- R
126 70
c
121
158
HB
-AGi
N
AG
- C B I
14 1
HB AB
55
HB AN
AG
160
-AN-AGN
CB AG
N.D.
j { N.D.
C AG
22
AG
frr
15/54 I
30
50
J. 15/54 J.
M
HB
"t t T ^
, Int/o. J pos
int
s-toz
Int/o. I DOS
K
14 17
Ti Ti
12
Copyright
Fiat
Auto
59
Electrical system
Marea-Marea Weekend
Location of components
55.
55
1747
AB122*
AR 159
HM ad
MN 124
HB158
* AN 160B
M147
MB 2 5 7
G160C
LR160A
S160C
AG160B
HG142
HN143
N137
BN 159
C n.d
LN6A
B 4D
NZ 8
HN6A
HG6A
R n.d.
Cad
LN160B
70
Z34A
RNad.
NK50A
N100B
N100A
Z120B
C 28A
Z36
AG
ad.
HRad.
HQ ad.
HVad.
C ad
AR244B
1 22
conditioner
1 23A
C n.d.
Power fuse
Fuse and relay unit
Instrument panel
Front left earth
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Left dashboard earth
Front left/engine cables connection
Dashboard/front cables connection
Three-stage pressure switch
Engine cooling fan low speed relay
Engine cooling fan high speed relay
Radiator/front cables connection
Radiator/front cables connection
Power fuse protecting engine cooling fan
Engine cooling fan
Water temperature sensor for gauge
Resistor for engine cooling fan
n g
'
n e
c o
l' 9 f
a n
1747
1747
engine)
Key to components
3
4
6
8
10
10A
11
12
22
55
70
121
122
123A
126
128
129
154
158
170
AN4C
N100B
* C ad
L126
AB55
1 26
Si/^N
128
N8
1747
* M123A
L170
R129
R154
M ad.
* The cables involved in the wiring diagram are marked with an asterisk.
60
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Versions w i t h air conditioner
Engine cooling system - Engine coolant temperature gauge (1998 engine)
Location of
11
a R
III!
ijj
BR
154
170
"I
[i
Ir-"
10
87 30 85
N
BN
129
172
123A
AR
AG
11
lARl
128
N
N
126
AG
-AG-
122
El I^SI
8685308787
BR
frfl
m
158
i
LU
87 30 85
HB
AG
121
P 85 86 87 30
86
Ffffi
AB I AR N
I AG
AN
123
AB
AG
AN-
-AGi
AN
-CBi
14 1
f -
HB
II
C3 55
127
HB
-AB
-AR
ABAGAN
AN
AN
CB AG
&
_L
N.D.
{ N.D.
N.D,)} N.D,
70
C AG
f-c
22
AG
HB
I 15/54'
15/54 J.
30
50
N R
m5 L S I
DO?
',' I n t / a ' I pos
int
staz
14 17
V%
12
Copyright
Fiat
Auto
61
components
Electrical system
Marea-Marea Weekend
Location of components
55.
Front left/engine cables connection
55
HB6A
HM 6 A
AR 4 D
L6A
CN6A
RN12A
1998
C n.d
LN6A
B 4D
RN145
C n.d.
HN 6 A
HG6A
AB 120B
LN 190
70
C28A
Z36
AG
ad
HR a d
HN ad.
HQ ad.
HVad
C ad.
AR244B
^ 27
1998
engine)
Key to components
3 Power fuse box
4 Fuse and relay unit
6 Instrument panel
8 Front left earth
10 Battery earth on engine
10A Battery earth on body shell
11 Battery
12 Ignition switch
22 Left dashboard earth
55 Front left/engine cables connection
70 Dashboard/front cables connection
121 Three-stage pressure switch
122 Engine cooling fan low speed relay
123 Engine cooling fan high speed timer
123A Engine cooling fan high speed relay
126 Radiator/front cables connection
L126
MN 55
LN n.d.
A B 121
| 25
N8
AG a d .
L127
A B 123
AR 123
AN a d .
RV124
LN124
L122*
MN 124
1 28
M123A
R129
N 172
R154
M ad.
62
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Versions w i t h o u t air conditioner
Engine cooling system - Engine coolant temperature gauge - Manual heater: car interior ventilation (1370-1581-1998 engine)
r x x r
<r
CD
CO
x
o
T
3R
11
llllll~H
<r <x
o
o
IT) CO
H ijj LTJ
M
154
63
10
TfZ J
N
BR
129
126 Ldp
R
El
E l
86 85 30 87 87
17K*)
BR
rfri
-GN-AN-
m
-AG-
-GR
-AN-
202
} N.D.
AN
HB
-GR-
GR
15 1
158
-GR--GM>-l
AN
r
3
206
N.D.
-GR
HB
N.D.
3
GR
-GR
71V
HN.D,
55
HB
RB
HN
GR VG AN
VG
HN
RB
CB AG
MA/*
N;D.{ | N.D,
C AG
22
0
207
208
AG
HB
15/54
15/54
30
50
12
Copyright
Fiat
Auto
63
N R
Electrical system
Marea-Marea Weekend
Location of components
55.
Thermostat on radiator
63
1 26
R129
N8
N154
N126
R154
^ 29
1 54
1370
AUTO
1581
1998
* R TI
R126
171
conditioner
Engine cooling system - Engine coolant temperature gauge - Manual heater: car interior ventilation (1370-1581-1998 engine)
Key to
3
4
6
8
10
10A
11
12
22
55
63
70
126
129
154
158
171
202
N8
components
Power fuse box
Fuse and relay unit
Instrument panel
Front left earth
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Left dashboard earth
Front left/engine cables connection
Thermostat on radiator
Dashboard/front cables connection
Radiator/front cables connection
Power fuse protecting engine cooling fan
Engine cooling fan
Water temperature sensor for gauge
Heater cables connections
Light for heater/air conditioner controls
symbols
GN4D
AN n.d.
206
2Q7
AN 171
N n.d.
* B 208
VG208
GR n.d.
HN 208
GR n.d.
64
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Versions without air conditioner
Engine cooling system - Engine coolant temperature gauge - Manual heater: car interior ventilation (1747
engine)
11
rxxr
IIIIII
Lp [Ju LJJ
M
154
63
212
Din
I I
10
87 30 85
86
BR
AG
129
126
c N.D. c
El
fFI
17K*)
BR
86 85 30 B7 87
-GN-AN-
-GR
-AN-
-13-&- R
ran:
} N.D,
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AN
d-CBi
AG
GR
Vz
N.D.
3 15 14 L
202
AN
3
B
7*7
-GR-
N N
-AGi
7
- 6
5
206
N.D,
-17-f3-GN-
GR-
HB
-GR
-GR-
GR
-GR
-3-&-AN-
HB
- } N.D.
i 55
158
HB
AG
RB
160
HN
GR VG AN
VG
HN
22
-AG-
-ww
} N.D.
12
Copyright
Fiat Auto
10
1
C AG
207
208
HB
I HI
15/54 I
50
>
AG
30
CB AG
N.D.}
RB
, Int/Q J pos
int
stoz
p
trrftj
(*) For thermostatically-adjusted heater, see preceding pages
65
N R
12
Electrical system
Marea-Marea Weekend
Location of components
55.
Front left/engine cables connection
55
HB 6A
HM 6A
AR 4D
L6ACN 6A
RN12A
1747
AB122
MN124
Cn.d
LN6A
B4D
NZ 8
HN6A
HG6A
AG 212
"| 25
RV124
AR 159
HM n.d.
HB158
AN 160B
M147
MB 257
G160C
LR160A
S160C
AG160B
HG142
HN143
N137
BN 159
212
Rn.d
Cn.d.
LN160B
4? 4?
AUTO
R 212.
N 8.
N 63 _
* R154.
206
207
208
212
1 71
R129
engine)
N8
GN4D
* AN n.d.
206
208
a n
e e c
'
r e s
i tor
N n.d.
* GR
n.d..
B 207
VG 207
HN 207
* RB n.d.
66
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagram
55.
Anti-lock braking system (A.B.S.) and fault warning
light
Location of
177
0"
* - " - H I I | l l ! ! H l t f " nR
10
R
179
11
1
JOT..
CD
CD
* in co
LJJ
CD
96
<r
CD
I li
40
T
R CB
N.D.
94
-NZ
R |R
RN
AR
-AB
ABj*
BR-*
BR-
176
181
li
( 1
AR
LR->~Io
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L-. 3
( . 13
N.D.
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li
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G ->23
h
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15
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(. 16
NZ--25.
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frl8
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CB
N.D, {
N.D.
LR
ili~L> 10
95
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N N
^ N.D.
N
N.D.
c c
m i ? , 1
G
J 174
I 15/54
15/54 I
Irrt/a JI pos
DO:
Jrrt/a
30
50 Irrt
s-toz
n., ,71
178
12
j
180
4F110N
Copyright
Fiat Auto
67
components
Electrical system
Marea-Marea Weekend
55.
P4F131N01
light
components
4F112N
68
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Starting s y s t e m - Electronic ignition a n d fuel injection - Recharging s y s t e m and w a r n i n g light - L o w engine oil pressure
warning light - Fuel injection fault warning light (1370 engine)
11
145
H--HIII^
10
143
157
'II
50
R R
RN
ir
MB
SN
MB
n
i
MB
rfl
C
B
87 30 85
.. 30 85
m
R
NZ
RN
ri
it
-MB-
140
86
156
-HR B
-(. 35
17
-(.34
R - > is
-(. 33
-LN--15
-(. 32
L - >H
-(. 31
G 13
-(. 30
N 12
-(. 29
-MB
B N - - H11
-(. 28
-LN
-HBMO
27
VB- 9
26
-SG
-SN--8
25
-NZ
BV--77
24
-CB
-GV--6
jf.,23
- S
c======~
V-
RV
155
(>d
RV
55
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HNLN
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-RN-
N,D,
12 3
[Zjj
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RN
SG
(N.D.
HR
NZ
GV
55B^
55AcfiG
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r
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50
n t / Q II pos
OQ5
, lnt/a
Int
stGZ
Fiat
N CB
LU
MB
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_n_
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12
Auto
57
BG BN
MB
BV
LN
N I N IN
GV
NZ
56B
GV
RN
N NZ
TT
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Copyright
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HN LN HG CN
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15/54
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a.
. 22
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237
|
86
BN-
t|l27
MB
86
BN
87 30 85
150
HN
BN
151
87 30 85
85
BN
124
T
2
141
131
linn
BN
R M
R CB
247
ft
[jj Ljjj S L
13
250
18
142
RN
SG
ti
6
137
149
132
131
69
144
u
138
136
148
139
Marea-Marea Weekend
Electrical system
Location of components
55.
Front left/engine cables connection
55
HB 6 A
HM 6A
AR4D
L6A
CN 6A
RN 12A
C n.d.
ggy^
ggg
1370
1370
GV131
SG 132
N131
RN 132
* SG 140
RN n.d.
140
P4F135N01
Starting system - Electronic ignition and fuel injection - Recharging s y s t e m and w a r n i n g light - L o w engine oil pressure
w a r n i n g light - Fuel injection fault w a r n i n g light (1370 engine)
Key to
3
4
6
8
10
10A
11
12
18
55
55A
55B
56
57
124
127
131
132
136
137
138
139
F u e l
in
1370
components
140
141
142
143
144
145
146
148
149
150
151
155
157
237
247
250
1
2
16
BR55A
17
R144
31
V138
L55
32
B144
N148
C138
18
* HR n.d.
33
GV 55A
19
* R n.d.
34
* V155
BV149
20
N148
35
*B155
SN157
21
BG149 '
* VB146
23
* S55
10
HB146
24
CB146
NZ151
BNad.
25
12
N141
27
* SG55B
13
G141
28
LN55
14
L136
29
MB 138
LN 136
30
N148
ti
* RN n.d.
15
70
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Starting - Electronic ignition and fuel injection - Recharging and w a r n i n g light - L o w engine oil pressure w a r n i n g
Fuel injection fault warning light (1370 engine)
11
Copyright
Fiat
Auto
IX-96 - Update
light
143
70/1
Electrical system
Marea-Marea Weekend
Location of components
55.
Front left/engine cables connection
55
1370
HB6A
HM 6 A
AR4D
L6A
CN6A
RN12A
C n.d.
MN 127
AR 159
HR n.d.
HB 158
M147
MB 250
* R n.d.
MB4C
S140
R n.d.
RV127*
HG 142
HN143
N137
BN159
. RN 145
. C n.d.
. LN 140 *
55g
1370
* GV
131
* SG 132
* N 131
RN 132
SG140
RN n.d.
P4F135N01
Starting - Electronic ignition a n d fuel injection - Recharging a n d w a r n i n g light - L o w engine oil pressure w a r n i n g
Fuel injection fault warning light (1370 engine
Key to
3
4
6
8
10
10A
11
12
18
55
55A
55B
56
light
140
1370
components
Power fuse box
Fuse and relay unit
Instrument panel
Front left earth
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Rear left earth
Connection between front left/engine cables
Connection between front left/engine cables
Front right/engine cables connection
Fuel gauge control unit
57 Inertial switch
124 Air conditioner compressor control relay
127 Connection between front left cable/cable
on relay cable
131 Fiat CODE electronic control unit
132 Petrol vapours cut-off solenoid
136 Knock sensor
137 Car speed sensor
138 Idle adjustment actuator (1370-1581)
139 Diagnostic socket for fuel injection
Alternator
Rpm and TDC sensor
Starter motor
Potentiometer on throttle valve
Earth for electronic fuel injection
Instrumented fuel injector (1370)
Fuel injection relay (1370-1747-1998)
RN n.d.
16
R144
31
V138
BR55A
17
L 55
32
B144
N148
C138
18
* HR n.d.
33
GV 55A
19
* R n.d.
34
* V155
BV149
20
N148
35
B155
SN157
21
BG149
S 55
VB146
23
10
HB146
24
CB146
11
BN n.d.
25
* NZ 151
12
N141
27
SG55B
G141
28
LN55
14
L136
29
MB 138
15
* LN 136
30
N148
13
The wires involved in the wiring diagram are marked with an asterisk.
4F199N
70/2
Publication
no.
506.763/07
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Starting s y s t e m - Electronic ignition and fuel injection - Recharging system and w a r n i n g light - L o w engine oil pressure
w a r n i n g light - Fuel injection fault warning light (1581 engine)
11
145
-11111IH---I
^ 143
198 152
RN
co
ft
VB
ffl
NZ
NZ BZ
VZ
RN
t
MB
AZ
NZ
BG CB
jRN-
87 30 85
HM29
-HG--2
'-( 30
MZ--3
31
-BR
G - > 4^
32
-CB
CN. 33
86
R-
-AZRV
3>
n
i
T
2
13
156
RV
^5127
-MB
R CB
-BV-
-SN
BN-
MB MB
55
-RV-
S -
-MB-
RN
-HN
-LN-HG-CN-
-LRS
-MBRN
HNLN
;HG
CB-
NZ
-BG
-NZ-
N N
HN LN HG CN
CB
R1
| N.D.
NG
-NGMB
-HR-HR-
-MB*-MB-
SG
HZ GZ
r
RN C
50
Itrt
Fiat
N NZ
lnt/a J pos
ni.
Copyright
MB
22 8
J E E L
Auto
NZ
,T1
12
56B
5 7 .(*)
. . 118T581
GV
5 5 B ^ ] 55A
NZ
HG
MZ
RZ
N CB
RN
L^D
SG
HR
GV
RN
RN
JJL.
142
_TL
C MB MB
RN ZB
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15 8 7
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138 137
144
132
131.
71
MB Z
RB
121413 6 5 4 1110
3291
MB
\\\ m m m
GV
rr
A - 16
N - 17
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MB
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196
35
36
37
38
39
40
41
42
43
44
45
18
. 46
19
- 0 47
-VBR Z - 20
48
-GV
- H Z - ^ 21
49
N - 22
-(. 50
-LB
23
BZ<. 51
24
SG 0 52
- Z
25
{. 53
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L R - ^ 26
-f. 54
-NZ
27
(. 55
-BN
-HR-
A
N N
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237
ZB--7
-(.
3
-NZ-LN-- 9
-BVS - - 10
-(.
-HL
L N - - 11
-HVA B - - 12
-GZ
13
C(
14
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15
-RB-
155
RV
-BR--
-VZ
AB
139
195
-AB---
LB CN
124
121
RM
TI
2 5 2 (*)
HN
II li
NZ
NZI V
GN LR
R R RN
^- *sD oo
LJJ
L|J
"3T
XT
rxxr
o
r.
ABC
30 50
<z
146
192
ft ft
10
157
193
Electrical system
Marea-Marea Weekend
Location of components
55.
55
1581
HM6A
AR4D_
L6A
CN 6A
RN 12A
, ,
HB6A
AR159
HR n.d.
HB 158
M147
MN127
|c*jRN 276
MB 196
* C n.d
R n.d.
LN 6 A
B4D
LR 195
S 195
MB 4 C *
* NZ 8
R n.d.
HN6A
HG 6A
S121
HG 142
HN143
N137
BN 159
RV127
. RN 145
. C n.d.
. LN 195
55Q
1581
1581
GV131
SG132
N131
RN 132
SG195
* MB 196
1 95
Starting system - Electronic ignition and fuel injection - Recharging s y s t e m and w a r n i n g light - L o w engine oil pressure
w a r n i n g light - Fuel injection fault w a r n i n g light (1581 engine)
Key to
3
4
6
8
10
10A
11
12
18
22
55
55A
55B
56
57
121
124
127
131
132
137
138
139
141
142
143
144
1581
components
145
146
148
152
155
157
162
163
164
165
168
192
193
194
195
196
197
198
237
Starter motor
Potentiometer on throttle valve
Earth for electronic fuel injection
Fuse protecting fuel injection (1581 - 1747)
Ignition coils assembly (1370-1581)
Water temperature sensor for fuel injection
Fuel injector (1st)
Fuel injector (2nd)
Fuel injector (3rd)
Fuel injector (4th)
Timing sensor
Air temperature sensor
Earth for electronic fuel injection (1581)
Fuel injection cables/injector flange connection
(1581)
Ignition/fuel injection electronic control unit
(1581)
Multiple relay (1581)
Absolute pressure sensor (1581)
Fuse protecting ignition/fuel injection control unit
(1581)
Fiat CODE fuse
* HZ 138
39
HV194
HG194
22
N141
40
GZ138
MZ 138
23
BZ 146
42
G141
24
SG55B
44
BG 252
CN 252
26
47
VB157
ZB 196
28
HR n.d.
48
* GV55A
29
VZ192
49
* R144
10
* S 55
30
B144
50
* LB 252
11
* LN 168
31
BR 139
52
* Z 196
12
AB139
32
CB 252
53
* NG n.d.
13
C n.d.
34
SN197
54
NZ148
14
* A G 197
35
RB196
55
BN 155
16
A n.d.
36
NZ148
N n.d.
37
BV155
RZ138
38
HL194
HM 194
21
2
3
17
20
LN55
LR55
L55
37
xp I I I I I I I I I I
nJr I I I I I t I
Jl^M
M
19
The cables involved in the wiring diagram are marked with an asterisk.
72
Publication
no.
506.763/01
Marea-Marea Weekend
Electrical system
Wiring diagrams
55.
Starting system - Electronic ignition and fuel injection - Recharging system and warning light - L o w engine oil pressure
w a r n i n g light - Fuel injection fault w a r n i n g light (1747 engine)
r-HNMIrf
10
Copyright
Fiat
Auto
73
Electrical system
Marea-Marea Weekend
Location of components
55.
Front left/engine cables connection
55
HB 6A
HM6A
AR4D
L6A
CN 6A
RN 12A
C n.d
LN 6A
B4D
* NZ 8
HN 6A
HG6A
1747
mm
AG212
AB 122
AR 159
HM n.d.
MN 124
HB 158
AN 160B
M147
MB 257
G160C
MB4C LR160A
S160C
A 121 AG 160B
HG 142
RV 124
HN143
* N137
S121
BN159
AG 123A g*]*
55B
R n.d.
- C n.d.
LN 160B
Front right/engine cables connection
1747
GV131
N131
SG132
RN 132
LG
N148
GV160C
1 60
light
components
Power fuse box
Fuse and relay unit
Instrument panel
Front left earth
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Rear left earth
Left dashboard earth
Front left/engine cables connection
Front left/engine cables connection
Front right/engine cables connection
Front left/engine cables connection
Fuel gauge sender unit
Inertial switch
Three-stage pressure switch
Engine cooling fan low speed relay
Engine cooling fan high speed relay
Air conditioner compressor relay
Fiat CODE electronic control unit
Fuel vapour cut-off solenoid
Knock sensor
Car speed sensor
Diagnostic socket for fuel injection
Low oil pressure warning light switch
143
144
145
146
148
150
152
157
160
161
162
163
164
165
166
167
168
237
250
257
Alternator
Rpm and TDC sensor
Starter motor
Potentiometer on throttle valve
Earth for electronic fuel injection
Fuel injection relay (1370 - 1747 - 1998)
Fuse protecting fuel injection (1581 - 1747)
Water temperature sensor for fuel injection
Ignition/fuel injection electronic control unit
(1747)
Ignition power module (1747)
Fuel injector (1st)
Fuel injector (2nd)
Fuel injector (3rd)
Fuel injector (4th)
Idle adjustment actuator (1747-1998)
Air flow meter (1747 - 1998 - 2387)
Timing sensor
FIAT CODE rear fuse
Fuel pump fuse (1370 - 1747 - 1998)
Fuel pump relay (1747)
160A
R n.
LG55B
GN 163
SN257
GV164
G165
HG 166
N148*
ZB 161
SB 161
AN 55
AG 55
* LN 55
* GR 162
N n.d.
N ad.
GV55A*
L136
CB n.d.
R144
V146
N ad.
S55
R ad.
ad.
* N ad.
LN
VN
ad.
ad. *
N ad.
N ad. *
RN a d .
BR a d .
* The cables involved in the wiring diagram are marked with an asterisk.
74
Publication
no.
506.763/01
Electrical system
Wiring diagrams
55.
Starting s y s t e m - Electronic ignition and fuel injection - Recharging s y s t e m and w a r n i n g light - L o w engine oil pressure
w a r n i n g light - Fuel injection fault w a r n i n g light (1998 engine)
:^4llllllrf"-i
75
Electrical system
Marea-Marea Weekend
Location of components
55.
Front left/engine cables connection
55
1998
HB6A
HM6A
AR4D
L6A
CN6A
RN 12A
N191
MN127
159
HM n.d.
HB158
BC190
M147
CN n.d.
MB 250
H189
.
LR 190
MB 4C *
,
^
C n.d.
LN6A
B4D
*NZ8
55^
*B190
HG142
HN143
*N137
BN159
GR191
HN 6A
HG 6 A
AB 120B
RV 127
S121
1998
5513
.RN145
. C n.d.
LN190*
1998
GV131
SG 132
N131
RN 132
ZB190
NZ n.d.
P4F147N01
Starter - Electronic ignition a n d fuel injection - Recharging s y s t e m and w a r n i n g light - L o w engine oil pressure
light - Fuel injection f a u l t w a r n i n g light ( 1 9 9 8 engine)
Key to components
3 Power fuse box
4 Fuse and relay unit
6 Instrument panel
8 Front left earth
10 Battery earth on engine
10A Battery earth on body shell
91 Battery
12 Ignition switch
18 Rear left earth
55 Front left/engine cables connection
55A Front left/engine cables connection
55B Front right/engine cables connection
55C Front left/engine cables connection
56 Fuel gauge sender unit
57 Inertial switch
120 Air conditioner cables connection
121 Three-stage pressure switch
124 Air conditioner compressor relay
127 Front left cable/cable on relay bracket connection
131 Fiat CODE electronic control unit
132 Fuel vapour cut-off solenoid
136 Knock sensor
136A Knock sensor (1998)
137 Car speed sensor
139 Diagnostic socket for fuel injection
141 Heated Lambda probe
142 Low oil pressure warning light switch
143 Alternator
144 Rpm and TDC sensor
145
146
148
150
151
157
162
163
164
165
165A
166
167
168
183
184
185
186
187
188
189
190
191
192
237
247
250
warning
190
1998
Starter motor
Potentiometer on throttle valve
Earth for electronic injection
Fuel injection relay (1370 - 1747 - 1998)
Lambda probe, fuel pump, fuel injectors relay
(1370-1998)
Water temperature sensor for fuel injection
Fuel injector (1st)
Fuel injector (2nd)
Fuel injector (3rd)
Fuel injector (4th)
Fuel injector (5th)
Idle adjustment actuator (1747-1998)
Air flowmeter (1747-1998-2387)
Timing sensor
Ignition coil (1st) (1998)
Ignition coil (2nd) (1998)
Ignition coil (3rd) (1998)
Ignition coil (4th) (1998)
Ignition coil (5th) (1998)
Ignition coil earth (1998)
Timing variator (1998)
Ignition/fuel injection control unit (1998)
Timing variator relay (1998)
Air temperature sensor
Fiat CODE fuse
Lambda probe fuse (1370-1998)
Fuel pump fuse (1370 - 1747 - 1998)
_\_ _
_2 _
_3 _
4_
V183
17
N148
18
ORN151
19
R162
37
NZ n.d.
RV n.d.
38
MB 187
* N n.d.
39
SN 185
S 55
AN 166
20
B184
40
_5 _
ZB 55B
21
C L 186
41
B 55
_6 _
* L55
22
C166
42
N 148
AV167
24
* BN 148
45
* G 157
*N168
27
* C n.d.
47
GV55A
B141
48
L144
_7 _
_8 _
_9 _
MG n.d.
28
10_
M141
29
L 136A
49
LN144
_n _
* N 136
30
GR n.d.
51
LN55
NBn.d.
32
LR55
52
BC55
N 148
34
HV 165A
53
AR146
* SB 164
35
A G 165
54
M 192
* H163
36
S150
55
BR 139
J 2
J 4
_
_
15_
16_
76
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Automatic transmission - Fault warning
11111 It-
R
'll N
10
JTXTX
CD
CD
CO
CD
1-
40 271
195
274
WL7
so
RN
AR|
nt
MN
N
RN
55
AR
AR
RN
R
RN
87 30 85
R
NZ
BN
-3-&-GN-
NZ
in
BR
VN
CN
N
AR
-RN4^-RN-
RN
N.D,
268
N.D.c
-LN
a
B
282
10 11 12
HM
LN
-18-f^-RN-
281
86
IRN
5-^-AR-
283
LB
AR
86
32 44 50
CB BG
277
275
9
87 30 85
276
273
<:
IT)
145
VD OO
light
267
NZ
LN-
-LR-
-NZ:
-NZ-
-AR-
-AR-
-NZ-
-NZi
NZ
252
-GNGN-
-SN
LB43-NZ
-CNCB-BG-
LR-
CB
-GN-
-GN->1 ,
r*
N - * 2
. 10
- B ->3]
-f- ll
-LN-M
12
-HM1
MNH> 14
-MB-F-7'
, 15
3
16
Er
269
-VN->i
- N > 2
-MN
-MN-
HN-GN-
<fo
AG->3
-GN-VN
r
N
16
-HR
HN-
HN Z R
4-1-
NI
N-#-N-
-BV.
RN-
43
BV
28C
-N
HV
-BR
BV
N.D,
HV
-AB--
110
HV
4 3 35
HV
HM
GN
SN
i
I 15/54
15/5. _.
30
50
r
. l ivt/n
r t / a jI pos
Irrt
staz
12
Fiat
Auto
22
Copyright
HR
NN
AG
HV
}N,D,
S NZ C N
MB
HG
MN
AR
1 2 3 4 5 6 7 8 9 10
2
1
-HV
L
V
M HN L N
MB
4
3
19
11
:i
6 I 8 10 12 14
7 9 11 13
244
VN
272
21
Z > io
- ( . 23
V - > 11
24
R > 12
. 25
13
-MN-f. 26
-MB-
BN
HV
BV
-AB-
fN.
N.D.
43 28A
19
-RN-
BRHV-
18
IN
270
CB
279
280
284
278
Electrical system
Marea-Marea Weekend
Location of components
55.
267L
R n.d.
N n.d.
HN 284
A G 279
N n.d.
n\ [
VN 2 8 4 *
* MN 284
MB 2 8 4 .
HR 279
C n.d.
HG284*
M 284
LN 268
BR 278
AB 278
267R
N 278
S279
SN 280
L 284
OKO
Automatic
Key to
3
4
6
8
10
10A
11
12
19
22
28
35
40
55
110
145
195
244
252
267
268
269
270
271
272
273
transmission
Fault warning
light
components
268
BG195
274
275
276
277
278
279
280
281
282
R n.d.
* NZ n.d.
B 279
AR 279
269
B 283
MN 267R
BR 283
* BN 283
* R n.d.
N n.d.
78
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Diagnostic sockets
connections
113701
|15811
140
J
? 6
!
|1747|
fl998l
160
190
195
L
12 1731 48
litl
GV
BRGV
GV
47 55
GV
AB BR
253
ABI N
BR
BR I BR
GV GV GV N
GV I GV
<*>
139
148
100
-
1581
1
3
2
4
5
-
-AB
BR-f
-23
22
- 21
r-sA
L3
10
11
12
BR AB
267
N|
rt4n
278
AB j
NZ
r -r
T
(*) Not 1581
10
BR
J26
|^25 ^24
^23
^22
J a "Ja)
18 J
17 J
16 J
15 J
14 J
13 J
^\
8
12
/j^v
2
^\
NZ
BRIAB
176
181
4F129N
Copyright
Fiat
Auto
79
Electrical system
Marea-Marea Weekend
Location of components
55.
1 Q2
1 30
BR 114
N100A
NZ114
NZ 8
1 39
BR 160C
BR 140
N148
Diagnostic sockets
Key to
8
55A
100
103
114
130
131
139
140
148
160
174
176
181
190
195
249
253
267
278
N148
connections
components
BR 190
N148
249
27g
BR 2 6 7 L
C B 253A
* N n.d
VG 253A
80
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Fiat-CODE system and warning light (TD
11
engine)
1910
|387|
229
266
Location of
components
P4F158N01
4F214N
Copyright
Fiat
Auto
VII-96 - Updale
80/1
Electrical system
Location of components
55.
Front left/engine cables connection
1910
GV
131
S 229
BR 2 2 6 .
2387
LG266
BR
P4F159N01
131
components
139
RN n . d . .
C B n.d.
2387 HV 55
GV 55A
L . NG 55 12387 j
TD BR 55A
1 39
N55A*
2387
* BR 5 5 A .
*N14S.
AB 2 6 6
4F215N
V I I - 9 6 - Update
80/2
VII-96
- Updato
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Instrument
panel connections
10
engine)
|1910-75|
III 11
frI
(TD
H i
298
11
|1910-75|
201
ijj
AG
CBI
Ji4
11 50
CN I AR
a .
IHRI
ll
143
I L
11
IT
IT
HB
HG
182
3?5[5E
B+t?182A
CB
BR
I
I
BR
H N
ijj
BR
I
BR
88
-;oo:ID
M G
m l 3
MG
N Z
A G
BN
AG
181
89
H -c
NZ HN LN CN CL HG MG HM CB CN AR L HB
-GL-e_L?
ZL3
i N -B
c^89A
L i !
HN
B R
RV
95
c[> l - p - A N
2
2 3
CB
43 11743
RV
6 11
Tjnjr^njnjr
R
114
34
IT
10 2 7
13
I 387 I
IS
142
158
LN I AG
00
ill
18 15 9
137
266
137
J~L
<o
: <o
:
o
00
294
| 2387 |
2387
| 1910 |
11910-1001
-BR-
N.D.
-BRN.D.
AG LB GN
GN
l_
-LBLB-GNGNN.D.
BN AG
I
1
HN
AG-^-AG
N.D.
AGAG
BR
123456789
MN
CB
N.D.
MN
HL
H G
262
HG
G R
HB RV
LB GN BN
A N
GL
HG
BN
pzpH
10 11121314151617181920
1 2 3 4 5 6 7 8 9 10 111211141516171819 20
ISJ
28A
BN
H G
MN
N
(0)
HL
8
293
120Bcj3
I 23871
f r r f rT
r
115/54 J
GR
28C
MN
J i r t / o . J pos
N Z
HG
ft
XXtJL
253
131
12
58
i m
18
I T
L'U
Copyright
Fiat Auto
NZ N N
NZ
GN
V I I - 9 6 - Update
*T
^ " T
80/3
, r
O T
56A
90
22
Marea-Marea Weekend
Electrical system
Location of components
55.
BN 28A
2 9 3 * [2387]
MN
* A G n.d.
* LN 55
Instrument panel
6B
Instrument panel
6A
GN n.d. *
BR n.d. [2387]
[2387] CN 55 _ _
BN 88
BR 8 9 *
GR58*
* HN 269
B n.d. *
HN 5 5 .
MN 131
_ . I* CTI7
C L 55 TD
R4I
* HG 28A
HG 55
[23871 MG 55 .
,
*HM55.
HL 120B
, * C N 5 5 ^
RV95 *
.
A 4H *
* GL34A
AN 4H *
N22
HB55*
Z 269 *
28A
n.d.
HR 244C
HN244C
Bad.
Qn.d.
ZB66
28C
Instrument panel connections (TC engine)
Key to
3
4
6
8
10
10A
11
12
13
22
28
34
55
56
58
70
88
89
89A
components
CB7D
70
Z34A.
ad..
N10OA
N100B
N100A
Z120B
C28A.
Z36.
AG
S36.
G6C.
ad.
HR ad..
HN ad..
HG ad.
HV a d . .
Crvd.
AR244B.
AN AC
N1O0B
The cables involved in the wiring diagram are marked with an asterisk.
VII-96 - Update
80/4
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Thermostatically-controlled heater / air conditioner (1910-75 engine)
r x x r
<z <z <c <:
Ljjj H ijj
M
259
207
211
)h
10
11
O O O
Q
CO ^ " \D 0 0
lllllh-
260
N
258
249
- + c
ffl
124(1)
AN
121<*)
BR
N S
N V
BL
CB VG
68
87 30 85
86
MN i MG
AN
LN
R
BL
S VG
N.D.
253
BL
127
LN .
:~^AN-:
MN---
-LN
N.D.
-.
I- MG
120A
-RN-0-R.
El l ^ l
3
N.D.
1
70
CB-VG
-BL-
R | R
N
N!
36
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'r'AN!
frl
BL
120B
m
-NZ-
86 85 30 87 87
-AR-
-AR-
-GN-
-GN-RG-
VG-
hVG--CB-AB-
-AR
IHL-
L____|
N.D.
-RG-
N.D
A B
55
N.D.
c c-
AB
--VG-
AN
-AR-CB-
p:l-^::: ^:i.^
r
+\
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3 15 14
254
17-^GN
HL
11 19
AG
GN
N.D.
N.D, {
294
AG
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M
J '15/54
. 15/54 JJ .
I Irrt/a
int/o JI pos
DO
30
50 mt
staz^
HN
N
BL
AR
i
ft
17
m
244
222
232
Copyright
Fiat
Auto
-BN
147
AG
12
-RNGN-i
GN
22
ft
-HN-
I- N
4+
VII-96 - Update
80/5
RG
N AN
GN
GN N
13
CI
202
CI
202
j^, i
0
256
1 2
206
AR
r|"|'j".i
12 3 4
255
209
RN-
Electrical system
Marea-Marea Weekend
Location of components
55.
55
1910-75
Cud.
NZ 8
HN n.d.
HG 6 A
70
C28A
Z36
S 120B
AV4D
HG n.d.
HVn.d
Cn.i
AR244B
P4F167N01
120B
AN AC
N100B
Key to components
3
4
6
10
10A
11
12
22
36
55
68
70
120
121
124
* HL 6 A
AB 55
AR70
GN n.d. *
* VG 121
B 253B
1 27
1910-75
NG304
RG55
C N n.d.
* A N n.d.
The cables involved in the wiring diagram are marked with an asterisk.
V I I - 9 6 - Update
80/6
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Thermostatically-controlled heater/air conditioner (1910-100
3X
<z
<t <r x
CD
CD
ro
LIJ
CD
LIJ
mill-
il
CD
vj3 o o
LJJ
engine)
LJJ
260
fl'
207
258
249
ft ft
10
ffi
124 (*)
BR
259
AN
121(1)
N S
N V
~zi
N
Z
BL
BL
BL-
CB
VG
N.D,
BL
N.D.
120A
El
-VG
N
CB-
BL-
N
N
120B
8685 30 87 87
-7-AB-
N.D.
-RN-B-R-
253
EB]
-NZN
Z
-GN-RG
AB
- S -HN-
L____|
HN
-CB-
N.D.f
j
-RGVG-
AN
-AR-CB-
3 15 14
a
-HN-
i N
- B -
GN
- Z RN
N.D. k
GN
a
TI.
HN
ft
17
244
:N
()
(|)
232
222
Auto
BL
Fiat
M
AR
Copyright
5^235
AG
12
"
-RG-RN-BN-
"
VII-96 - Update
80/7
G
N
N
H
GN
[1
202
GN
I]
CI
202
RG
N AN
AR
J^l
12
256
206
12 3 4
255
209
254
Electrical system
Marea-Marea Weekend
Location of components
55.
55
1910-100
HB6A
HM 6 A
AR4D
L 6A
CN6A
RN12A
C 200
RN145
LN 6 A
B4D
70
C N 288
Z 34A
n.d
N1O0A
N100B
N100A
Z120B
C28A
Z36
HG n.d.
HVad.
C ad
AR244B
P4F171N01
AUTO
235
244
249
253
254
HL 6A
AB55
AR 7 0
GN n.d.
VG121
B253B*
1 27
1910-100
NZ
8
VN 13
NG 3 0 4
RG55
CN n.d.
engine)
components
120B
AN 4C
N100B
AB121
AR n.d.
AN n.d.
MN55*
L N n.d.
MG55*
* MN124
LN 124
MG124
AN 124
AR123
4F224N
V I I - 9 6 - Update
80/8
V I I - 9 6 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Thermostatically-controlled heater/air conditioner (2387 engine)
llllll-
r r r x
<: <u <t <n
CD
CD
CD
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127
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249
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131
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298
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305
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8
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15/54 I
AR
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i
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12
17
t f f l
244
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222
232
Copyright
Fiat
Auto
VII -96 - U p d a t e
RG
BL
80/9
] [l
202
GN
f]
CI
202
1 . rj" i
12
256
206
AR
N AN
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12 3
255
209
RNL -fe
Electrical system
Marea-Marea Weekend
Location of components
55.
P4F175N01
(2387
1 20B
jfr
Key to
c o r |
d i t i o n e r cables connection
ine)
3ft]
*Z70
AUTO
components
GN4D
3
4
6
10
10A
11
12
13
22
36
55
68
70
120
121
124
232
235
244
249
253
254
* HL 6A
AB55
AR70
GN n.d.
VG 121
[]
| 2 7
.B253B
ABn.d..
NG304
80/10
VII-96 - Update
Publication
no.
506.763/02
Marea-Marea
Electrical system
Weekend
Wiring diagrams
55.
Versions w i t h air conditioner
Engine cooling system - Engine coolant temperature gauge (1910
engine)
Location of
111111*
11
& R
<r
CD
CD
CD
CD
i n oo
ON
LIJ
<c
154A
170
154
components
172
123A
10
87 30 85
86
ijj lH ill
AN
AG AR
AR
129A
129
n
N
N
Ci
87 30 85
IT
HB
4ttl28B
4
AR
AG
AR
126
AR
86
N | AN
AG
AB
-AN
is
ARl
AG
121
-13-&- R
iff4L
I
122
158
237
C ^ 1 2 8 A
R |
R N
CN
AG
f" AG-
HB
AG
t l ? 5 5
HB
127
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N.D,
CB
j j N.D.
c
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-AR-
-ru
22
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C
I ^
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30 87 86 85 P
14 17
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ft
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I lrrt/o I nns
cn
,4.
J P
30
50 Irrt
staz
1 5 / 5 4
CN
I AR I
Pi
4^
123
12
P4F178N01
4F230N
Copyright
Fiat
Auto
VII-96 - Update
80/11
VII-96
Update
Electrical system
Marea-Marea Weekend
Location of components
55.
127
1910
NG304
RG55
* C N n.d.
RG304
N8
* A G n.d.
CN 123
A B 121
N123*
L A G 123
A B 123
AR n.d.
AN n.d
Versions w i t h air
3
4
6
8
10
10A
11
12
22
55
121
1910
^S^^T?
1 28A
conditioner
1 26
engine)
components
Power fuse box
Fuse and relay unit
Instrument panel
Front left earth
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Left dashboard earth
Front left/engine cables connection
Three-stage pressure switch
A G n.d
AR n.d. /
* AG 172
AR172
^Q^T
^/>Qkir
* N 17?
1 28B
o^y^^ASy
J^^^^^\
154A ^ . / ^ ^ ^ ^ ^ ^
RN 129A
- J i ^ ^
^
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3
1910
* N n.d.
* N n.d.
M170
R122
Ln.d.
L n.d.
4F231N
80/12
VII-96 - Updale
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Versions with air conditioner
Engine cooling system - Engine coolant temperature gauge (2387 engine)
Location of
111111-*
11
3R
<E
1
C
CD CD
ON >!- i n oo
CD
CD
H li i
154A
154
172
123A
10
87
L |
170
30 85
86
BN
BN
components
N AN
AR
J
129A
129
RN
RN
t
8
R|R
|
87
30 85
N AN
C i HB
-13-S- R
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126
121
AR
86
AG
AB
C "AN
CN
AG
f AG-
HB
CI?
AG
AR AR
122
158
1 2 8 B
L4 R
2 3 7
C ^R1 2 8 A
AG
5 5
HB
127
AG- -AG
AB- -AB
CN- -PN-AR-
A R -
CB
N.D,
Ic cI
N.D.
22
N CN
AG I AR I AB
r-,
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r-,
rhhf
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,LH
HB
NR
SL22.
30
I 15/54 50
I
pos
lirt I n t / n s tIa z nn<!
K
14
17
30 87 86 85 P
4^
123
12
P4F178N01
4F234N
Copyright
Fiat
Auto
VII-96 - Update
80/13
VII-96 - Update
Marea-Marea Weekend
Electrical system
Location of components
55.
Front left/engine cables connection
55
NG
HB6A
MG6A
GR 4D
AR6A
CB6A
RG127
VN n.d.
CN 6A
BN4D
2387
131B
HN n.d.
HG6A
j 27
2387
NG304
RG55
CN n.d.
RG304
CN
123
* AB 121
N123*
AG 123
AB 123
AR ad.
AN ad.
Versions w i t h air
126
conditioner
engine)
1 28A
2387
N8
components
Power fuse box
Fuse and relay unit
Instrument panel
Front left earth
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Front right/left cables connection
Left dashboard earth
Front left/engine cables connection
Dashboard/front cables connection
Three-stage pressure switch
R154
AG ad.
* AR ad.
R154A
N172
G172
1 28B
2387
80/14
V I I - 9 6 - Update
Marea-Marea
Electrical system
Weekend
Wiring d i a g r a m s
55.
Versions without air conditioner
Engine cooling system - Engine coolant temperature gauge - Manual heater: c a r interior ventilation (1910-75 engine)
11
CD CD CD CD
87 30 85
ijj li Ljjj
M
128A
126
RN
AGIAR
N
LR
N -*- N
BR
-GN
DC
AN
AN I
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AN-
-AN
GR
N.D,
171(*>
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1
GR-k-KglH
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a-CBi
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86
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87 30 85
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129A
123A
122
in oo
172
170
154
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N
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202
158
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208
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207
22
AG
HB
frr
J 15/54
15/54 50
JI
30
-t
14 17
ft
(*) For thermostatically-controlled
see preceding pages
12
Copyright
Fiat Auto
N R
L22_
t
II W
/ i JJ DO
pos
In-t/o.
int
staz^
ft.
TI
VII-96 - Update
heater,
80/15
Electrical system
Marea-Marea Weekend
Location of components
55.
1 26
1 28A
on
AG 122
AR 123A
AR 172
AG 172
N172
F r o n t
1 28B
r a c
'i
a t 0 1
* RN 129A
1 29
N n.d.
N n.d.
M170
R n.d.
R 128A
L n.d.
L n.d.
P4F187N01
171
* N8
Key to components
3
4
6
8
10
10A
11
12
22
55
63
70
122
GN4D
AN n.d.
206
AN 171
N n.d.
B208
VG 208
* HN 208
GR n.d.
* GR n.d.
The cables involved in the wiring diagram are marked with an asterisk.
80/16
VII-96 - Updale
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Versions without air conditioner
Engine cooling system - Engine coolant temperature gauge - Manual heater: car interior ventilation (1910-100 engine)
11
rxxr
11 III h
3 R
<z o
<r
o o
o
to *
m oo
LJJ LIJ
170
154
172
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12
Fiat Auto
HB
N.D.
Copyright
IT
HB
-i3-fe- R
8-
158
VII-96 - Updalfi
heater,
80/17
Electrical system
Marea-Marea Weekend
Location of components
55.
1 20
1 28
RN 123A
R129
N8
L 123A
N172
AR 172
| 20
R154
1 B4
2Q7
R Tl
R128
P4F191N01
171
Engine cooling system - Engine coolant temperatur coolant - Manual heater: car interior ventilation ( 1 9 1 0 - 1 0 0 engine
N8
Key to components
3
4
6
8
10
10A
11
12
22
55
63
70
123A
206
AN 171
* N n.d.
B208
VG 208
HN 208
GR n.d.
GR n.d.
4F241N
VII-96 Update
80/18
VII-96
Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Versions without air conditioner
Engine cooling system - Engine coolant temperature gauge - Manual heater: car interior ventilation (2387 engine)
11
XTXX
3R
154A
LH
87 30 85
BN
BN
BR
129A
123A
rtrn
10
122
llllll->
172
170
154
86
N | AN
AG
87 30 85
86
I AN
R
|
AR
129
RN
^
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4|:zil28B
128AL||D
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RNI
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N
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126
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206
N.D.
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GR
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237
GR
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158
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6
5
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55
HB
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4
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N
N.D. |
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207
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C
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208
22
VG
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CB
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G , .
M l . .|.
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HB
.|
14 17
ft
(*) For thermostatically-controlled
see preceding pages
12
Copyright
Fiat
Auto
N R
V I I - 9 6 - Update
heater,
80/19
Electrical system
Marea-Marea Weekend
Location of components
55.
1 2@
1 28A
2387
N8
A G 122
R154
* R154A
AR 123A
N172
RN 129A
G172
1 28B
1 29
RN n.d.
* M n.d.
B170
R n.d.
* R 128A
* L n.d.
* L n.d.
P4F195N01
Versions w i t h o u t air
conditioner
Engine cooling system - Engine coolant temperature gauge - M a n u a l heater: car interior ventilation (2387
Key to
3
4
6
8
10
10A
11
12
22
55
63
70
122
171
engine)
N8
components
Power fuse box
Fuse and relay unit
Instrument panel
Front left earth
Battery earth on engine
Battery earth on body shell
Battery
Ignition switch
Left dashboard earth
Front left/engine cables connection
Thermostat on radiator
Dashboard/front cables connection
Engine cooling fan low speed relay
GN4D
AN n.d.
206
207
AN 171
* N n.d.
B 208
VG 208
HN 208
GR n.d.
* GR n.d.
VII-96 - Update
80/20
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Starting s y s t e m - Electronic injection - Recharging s y s t e m and w a r n i n g light - L o w engine oil pressure w a r n i n g
Heater plugs w a r n i n g light - Fuel injection fault w a r n i n g light - Fuel preheating (1910-100 engine)
JHlllllrf-n
3
<:
SO ^ ~ VJD
ij
RJ
LJJ
143
87 30 85
86
30
XT
CO
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124
121
145
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289 290
303
MG
87 30 85
N
RN
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RG* J
R
RN
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HN
i
2
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50-
BCi
4h
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AR
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12 3
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131
294
m
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6
87
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86
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296
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200
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229
167
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light
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1 2 3
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12
16
14
17
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C
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22
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V I I - 9 6 - Update
VG
5-1,
85 30
87
295A
ir
142
4F246N
Fiat
HV
86
Copyright
:;B
121
ft
12
C
RN
80/21
297 285
295B
287
288
148
192
157
139
Marea-Marea Weekend
Electrical system
Location of components
55.
55
1910-100
MN127
HB6A
HM
6A
AR4D
L6A
CN
6A
RN 12A
C 200
RN145
* LN 6 A
CN
5JJQ
288
GV 131
RN 295A
R n.d.
P4F199N01
Starting system - Electronic injection - Recharging s y s t e m and w a r n i n g light - L o w engine oil pressure w a r n i n g
Heater plugs warning light - Fuel injection fault w a r n i n g light - Fuel preheating (1910-100 engine)
Key to
3
4
6
8
10
10A
11
12
18
55
55A
55C
56
57
121
124
127
294
light
1910-100
components
131
137
139
142
143
145
148
157
Alternator
Starter motor
Earth for electronic injection
Water temperature sensor for injection
167
168
192
200
201
223
224
226
228
229
237
285
287
Air flowmeter
Timing sensor
Air temperature sensor
Electrostop relay (TD)
Plug preheating control unit (TD)
Rpm sensor (TD)
Instrumented fuel injector (TD)
Diagnostic socket for FIAT CODE system
Heater plugs (TD)
Engine cut-out electrostop (TD)
Fiat CODE fuse
E.G.R. solenoid (TD)
Solenoid on diesel pump for advance (TD)
* A G 55
19
S 55
21
NZ n.d.
NL148
11
* G n.d.
12
* BC 201B
22
AV 167
AR 296
13
BR 139
23
V296
* HV 285
14
ZB 201B
24
M192
25
VG 157
288
289
290
294
* R n.d.
B55
AN 287
15
N 224
16
SB 297
B 223
18
L55
LN55
The
4F247N
VII-96
Update
80/22
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Starting s y s t e m - Electronic injection - Recharging system and w a r n i n g light - L o w engine oil pressure w a r n i n g light Heater plugs w a r n i n g light - Fuel injection fault w a r n i n g light - Fuel preheating (2387 engine)
r-Hliffh
10
145
VN I VN
30
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87 30 85
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86
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R
R L
SI
86
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ni
LN
LR
r Hr-MGN
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55
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1213 1516
14
HG
ARMG
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15/54
17
N.D.
142
N
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MB N , _ ,
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Fiat
Auto
N NZ
56
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57
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18
VU-96 - Update
NGBR HV
VN
85 30 87
200
131
80/23
NZ
MB
16
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12
Copyright
RN
R IR I R
22 8
55C
50
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39
41
42
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R BR
NZ
JRG HN
R CB
VB
ZB BL
287
12 3
<1
MG
T
13
Ti
7 6 43 5 2 1
"EE"
CB
224
40
R NG
_TL
50
223
285
UI
30
292
87 30 85
167
R R RN
30!
304
303
291
137
124
ij ijj H I!
143
RB
86
N N N N
RN
85 30 87
288
BR
R
H
H
HIH I H
148
290
289
55
SN
H
III
(0)
229
AB->27
-(.
LG->28
157
-AB
139
Electrical system
Marea-Marea Weekend
Location of components
55
NG131B
HB6A
MG6A
GR4D
AR 6A
C B 6A
RG 127
HV131B
RN n.d.
MG n.d.
HB158
NG n.d.
HV266
RN 266
VN n.d.
AR 2 6 6 *
C B 137 *
MB 200
CN6A
MB4C*
BN4D
N 8
* HN n.d.
* HG 6 A
BR 127 *
NZ127
V 121
CL6A
BR 289
NZ 266
V266
C L 266
* HG142
* HN143
ggQ
VB 2 9 1 .
BR 131B .
LR 2 9 2 .
H 291
LG 266
P4F203N01
263
light
1
Key to
3
4
6
8
10
10A
11
12
18
22
40
55
55A
55C
56
57
121
124
components
167
200
201
223
224
228
229
266
Air flowmeter
Electrostop relay (TD)
Heater plug control unit (TD)
Rpm sensor (TD)
Instrumented injector (TD)
Heater plugs (TD)
Engine cut-out electrostop (TD)
Electronic fuel injection control unit (2387TD)
288
289
290
291
292
303
304
R n.d.
41
* HM 201
HV 55
A n.d.
N148
42
B 200
19
N n.d.
44
* V55
* CN 55
21
* AV 286
47
HV223
G 224
25
* BL 55A
50
AR 55
M 285
26
RN 55A
52
HR 167
AN 201
27
AB139
53
SN 157
L G 55A
55
* VN n.d.
17
18
A n.d.
* NZ 55
28
10
A G 287
29
MG n.d.
11
CL55
33
ZB55A
12
N 224
34
HL 167
H n.d.
35
MN 286
A C 286
37
VB55A
* NZ 288
38
* LN 167
R n.d.
39
C 286
13
14
15
16
The cables involved in the wiring diagram are marked with an asterisk.
VII-96 - Update
80/24
VII-96 - Update
Electrical system
Marea-Marea Weekend
Wiring diagrams
55.
Starting system - E.G.R. control - Fuel injection control - Heater plugs and w a r n i n g light - Fuel preheating - Recharging
s y s t e m a n d w a r n i n g light - L o w engine oil pressure w a r n i n g light (1910-75 engine)
tHIIIII^-i
143
145
10
201
R-g
Him
r
-S
223
LH
3^ZI
BC-
N-
ITTT
<Z
*Z
R<
50-AG-
? n t
CO
Ljjj Tijj l i ill
CD
\D
CD
CD
4h
R R RN
Ll L
CD
296
229
AR
EL
12 3
LH
tiffin
HN
T f f i T
C S N
R M
304
30 85
RN
*RG
L_L,
l
T
-RNf R
55A
N;
NZ
GN*
HN
-BR
i-GV-
131
jl27*
200
86
N
RN N R
RG* rj
NZ
GN*
228
N.D.
in
7~!
rTV
l
RN
BR ,
4B- N
298
5 3-BR
- R ->
3-GV
- B_->2
II
5 2
13 2
R CB
MB MB
87 30
30 85
8J
86
CB '
CB
MB
55
HN
-CL
-HN-
-HN-
RNL
-HN:MG-HG-
-BR 3
-VG->4
RN
AG-
-V->5
-LNHN-
- G->
-LN-
-BC-
- C 7
MG-HG-
-AR-> 8
- N -> ?
305
237
CL
|A]
.1 i. .1
8787O30 85
li.
HN
HG
rfffvf 7 tj?
86
1 2 3 10
MG
12
N N
4*
4* 4*
16
14
R r g j
-MG-
10
-HV->
ll
^
17
\
-BR
226
-BR
302
CB
f N.D.f N.D.
o }
o T__
22
I N N N N
N N INZI N N
HV
RN C
LJ
1
Int/a Jl pos
D05
15/54 J.
' Int/o
30
50 mt
staz
MB N ,
N NZ
LH
,11
12
56
(0)
IT
142
Copyright
Fiat
Auto
VII-96 - Update
ZB
N
VG
III
(0)
NZ
57 18
iMj
NZ
80/25
300
301 285
148
299 157
Electrical system
Marea-Marea Weekend
Location of components
55.
55
J J J J ^ Y
* GV 131
S 229 *
* BR 2 2 6 .
298
Starting system - E.G.R. control - Fuel injection control - Heater plugs and w a r n i n g light - Recharging system and w a r n ing light - L o w engine oil pressure w a r n i n g light (1910-75 engine)
Key to
components
229
237
285
289
290
296
143
145
148
157
Alternator
Starter motor
Earth for electronic injection
Water temperature sensor for injection
200
201
223
226
3
4
6
8
10
10A
11
12
18
55
55A
55C
56
57
127
CODE
system
VII-96 - Update
R n.d.
C n.d.
B n.d.
* AR 296
BR 229
N148
* VG157
10
MG55
V296
TI
* HV 285
G 296
80/26
VII-96 - Update
Publication
no.
506.763/02
Marea-Marea Weekend
Electrical system
Wiring diagrams
55.
Diagnostic socket connections (TD engines)
|1910-75
298
BR
302
1910-75 |
111
226
11910 |
27
BR
I BR
BR
266
294
AB
I BR
I
139
Location o f components
12387|
11910-1001
BR
ABlBR
55A
N
N
N IN
139
12387|
11910-1001
148
BR
BR-
103
114
100
NZ
131
253
mm.
130
1 2 3 4 5 6 7 8 9 101112131415
BR
NZ
249
1 2 3 4 5 6 7 8 9 101112
VG
NZ
NZ
CB
(is)
VGICB
8.
N.D.
Z N
AB |
NZ
4
T25
T T
27
28
r
9
V17
J
T
7
BR
T
6
10
'
r5 4r
13 J
V
3
'i*
IE J
T
2
11
T
1
NZ
BRIAB
176
()
181
P4F210NO1
4F266N
Copyright
Fiat
Auto
VII-96 - Update
80/27
Electrical system
Marea-Marea Weekend
Location of components
55.
1 03
BR 114
y ^ y ^ ^ T ^ ^
N100A
NZ 8
1 39
1 30
y^^^^X^W^
NZ 114
1 39
2387
1910-100
N148
y J ^ J j r ^
N148
A R 9Rfi
1 yti
,
braking
Key to components
226
1910
BR 55A
NZ181
A B 181
249
p ^ J T ^
N148
D i a g n o s t i c s o c k e t for climate c o n t r o l
system
9AO
O
Diagnostic socket
(1910TD-75)
for
E.G.R.
system
1910-75
C B 253A
N n.d.
VG 253A
BR 298
^ J ^ j T ^
^7^^)42)^
N148
P4F212N01
VII-96 - Update
80/28
VII-96 - Update
Marea-Marea Weekend
Mercati Esteri
Electrical system
Wiring diagrams
55.
Version: Foreign markets
Parking lights and w a r n i n g lamp - Dipped beam headlamps - M a i n beam headlamps and w a r n i n g light - N u m b e r
lights - Heated front seats
plate
19
Copyright
Fiat
Auto
NKD^N-"
80/29
Electrical system
Marea-Marea Weekend
Mercati Esteri
Connector blocks
55.
28B
Lad.
Lrtd.
HRnd.
AV238B
L238A
70
Z34A.
RN n.d.
C 28A.
Z 36.
N10OA
N 1O0B
N100A
Z120B
S36.
G6C.
* AG n.d.
HR n . d .
HN n d . .
HG n.d.
HV n.d..
Cn.c
AR244B.
AN4C
N100B
1 ^.A
*
Power relay
91
e a r
R
cables/driver's heated seat connection
A G n.d.
* R n.d.
R n.d. *
P4F903N01
Parking lights and warning l a m p - Dipped b e a m headlamps - M a i n beam headlamps and warning light - N u m b e r
lights - Heated front seats
Key to components:
1 Front left lights cluster
2 Front right lights cluster
3 Power fuse box:
A 30A fuse protecting injection
B 40A fuse protecting ignition system
C 60A fuse protecting additional optional extras
D 80A fuse protecting fuse and relay unit
4 Fuse and relay unit
5 Dipped beam relay
6 Instrument panel:
C Parking lights warning light
D Main beam headlamps warning light
7 Stalk unit:
D Flasher button
E Dipped beam/main beam headlamps stalk
F Parking light stalk
8 Front left earth
9 Front right earth
10 Battery earth on bodyshell
11 Battery
4F260M
plate
12
13
14
15
16
17
18
19
28
42
70
91
134
134A
135
Ignition switch
Front right/left cables connection
Left number plate light bulb
Right number plate light bulb
Rear left lights cluster
Rear right lights cluster
Rear left earth
Rear right earth
Dashboard/rear cables connection
Earth on right dashboard
Dashboard/front cables connection
Power relay
Rear cables/heated driver's seat cables connection
Driver's seat heating pad
Rear cables/heated passenger's seat cables connection
135A
236
263
N.D.
* N42
*| 9 C
263
u s e
r o t e c t
' 9
n e a t e
seats
L134
N18
P4F904N01
* The cables shown on the wiring diagram are marked with an asterisk.
4F261N
80/30
Publication
no.
506.763/03
Marea-Marea Weekend
Electrical system
Connector blocks
55.
CONTENTS - CONNECTOR BLOCKS
page
82
82
83
4F132N
Copyright
Fiat
Auto
81
Electrical system
Marea-Marea Weekend
Connector blocks
55.
Interpretation of the codes on the connector blocks
A Identification
no. of connector
block referred to the wiring diagrams
The code "n.d." identifies a connector block taped into the wiring loom
identification
code
of engine type
1370
1581
TD
1747
<
1910
1910-75
1910-100
X 2387
P4F382N05
Identification
of climate control
type
A manual heater
B automatic heater
C automatic air conditioner
rs
Versions with auto
transmission
AUTO
WARNING All the connector blocks are shown with the cable input side in view.
Cable colour codes
A
B
C
G
H
L
M
N
R
S
V
Z
AB
AG
AN
AR
AV
Light blue
White
Orange
Yellow
Grey
Blue
Brown '
Black
Red
Pink
Green
Purple
Light blue-White
Light blue-Yellow
Light blue-Black
Light blue-Red
Light blue-Green
BG
BL
BN
BR
BV
BZ
CA
CB
CN
GN
GL
GR
GV
HG
HN
HR
HV
White-Yellow
White-Blue
White-Black
White-Red
White-Green
White-Purple
Orange-Light blue
Orange-White
Orange-Black
Yellow-Black
Yellow-Blue
Yellow-Red
Yellow-Green
Grey-Yellow
Grey-Black
Grey-Red
Grey-Green
LB
LG
LN
LR
LV
MB
MN
NZ
RB
RG
RN
RV
SN
VB
VN
VR
ZB
Blue-White
Blue-Yellow
Blue-Black
Blue-Red
Blue-Green
Brown-White
Brown-Black
Black-Purple
Red-White
Red-Yellow
Red-Black
Red-Green
Pink-Black
Green-White
Green-Black
Green-Red
Purple-White
4F133N
82
V I I - 9 6 - Update
Publication
no.
506.763/02
Marea-Marea Weekend
Electrical system
Connector blocks
55.
Front left lights cluster
VN
AC
GL 70
N8
HN n.d.
N8
Polyelliptical headlamps
Front left lights cluster
VN 4 C .
AV4D.
HN
AC
Non-polyelliptical headlamps
2
V13
GV13
A n.d.
N9
N 9
H13
N9
Polyelliptical headlamps
Front right lights cluster
V13
GV13
Non-polyelliptical headlamps
83
Marea-Marea Weekend
Electrical system
Connector blocks
55.
Power fuse box
BR4A
M n.d.
Rn.d.
os
M12A
Rn.d.
4B
Rad.
4C
[mo]
4D
re
* '
ay
un
'
AB70.
1HN1A
MB 200
MB 55
u s e anc
RN 120A
Z13
RNad.
AN 70
(TO] AN n.d
A ad.
AV70
H13
SON
AJ
GN120B |4|[$]
171
AN 16
AN a d . .
Q43.
G13.
G70.
B55.
Z13
Z13
RN n.d.
AR55
AR 107A
Rad.
os
MN 39
AV1A
g]GN171
Without Check Panel
84
MB56B
R41
GN120B
VII-96 - Updatu
Publication
no.
506.763/02
Marea-Marea Weekend
Electrical system
Connector blocks
55.
R236B
RQ16.
HL 2 3 6 B
AR 107A
HR 5
MN 2 3 6 B
H45
MB56B
LR7B
RG16
G12B
A17
A 17
RN 107B
GN16
RN 107B
RN107A
RN 245
4G
use anc
re
' '
ay
un
RN 107A
'
4Q
RN264.
RN264.
AR238B
HB 2 3 6 B .
AR 6 6
A 17
A 17
RN265
RN265
GN 16
RN 107B
RN107A
RN 107B
85
Marea-Marea Weekend
Electrical system
Connector blocks
55.
Fuse and relay unit
4H
41
Cnd
AN23B
AN6B
CB n.d
4.RN6C
A23B
AB n.d
A6B
AN 7C
RV6C JL
CB7C
MN234
C n.d
4J
AR23A
AG 70
R G 6 C .
Rn.d
HR4F
GN 69
HR7B
Ln.d
GN 58
6A
.
AGn.d
LN55
MN 293
[2387]
BRn.d
BR 89
[23871 CN 55
BN88
2387
HN269
HN 55
1747
2387
MN131
HG 55
MG55_.
HM55
HL 120B
CN55
123871 CB 55
6C
Instrument panel
6B
, ,
C L 55
HG28A
GL34A
HB55
/ z-AR55
Ct17
AN4H
[a87]
Instrument panel
7A
Stalk unit
GN28A
GR28A
RV4H
GL70
Cn.d
R n . d
HRrvd
HN n.d
HVn.d
HG n.d
RG4J
RN4H
H 24
HN24
HG 24
GV24
SGn.d
SN13
86
VII-96 - Updale
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
Stalk unit
7B
7C
Stalk unit
A4H
LR4F
LR23B
HR 5
AG n.d
GV n.d
CB4I
Stalk unit
7D
.N126
. NZ 43
.NZ55
,
N277
N 305
wto-75
N293
CB28C
2 3 8 7
CL28C
Crtd
N1A
LB23A
L_ Nnd
N97
1 Q
Battery earth
N10
Copyright
Fiat Auto
N10A
V I I - 9 6 - Update
87
Electrical system
Marea-Marea Weekend
Connector blocks
55.
11
Battery
N10
WO-75
SKMOo|||J{
Rn.d.
1 2A
'9 't'
os
o n
1 2B
switch
M n.d
'9
m t
2387
switch
R 2 7 6 os
AG n.d.
Cn.d.
Cn.d
M3
RN55
*| 2
'
_
-
BRnd
n
RN97
HB 4D
88
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
^ ^
>| ^
N18
HL28A
N n.d.
HL 236B
HL 4E
Marea
"j g
Marea Weekend
<y
N18
Nn.d.
HB236B
Marea
1 g
Marea Weekend
*| g
GN4G
GN 28A
RG4E
AN4E
N18
H28A
RG4E
GN 4 G _ *
Marea
"J y
GN28A
Marea Weekend
| -Jj
GR 4E . * _
B4G
A4G
RN4E
GR 28A
GR4E *
Marea
Marea Weekend
89
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 g
1 0
N262
N86
N 66
NZ57
N 86
v
\ \ \ \
W A \
N41
N 245
N87
1
N17
N87
N 238A
N 1 3 4
-O^OSS^M
^ ^ ^ M L K ^ _ ^ P
N107A
jliki/^^^
N107B
^<yWr
N 5>43
N 92A
NOS
/ /
N7 ? 3 6 B
N 236B
2Q
\
1
L e
\
\ \
\ \ \
\ 4
N39
N 238A
^ - O ^ V
NU
^ <
ZHH^
N 238B
N ?fi5
N 15
^ /
N270
AN n.d
22
2*|
23A
/ ^ ^ ^ ^ ^ ^ ^
^ dashboard earth
a z a r c
N6B
N35
N W
.
_
N 34A
.
\ \
\ \
N 91
N48A
r
LB
7D
NZ28C
\ \ \ (
\cv\\A\
-^Ov^M
N 2 3 A
N 41
AB n.d
^^^Ns^^^^
^/^o^
--^^^^ir^\^=3^
N 971
-^^^V^"
N 272 _
AR4I
23B
a z a r c
24
\
\
N 22
A4H
LR7C
\
\
ft
H7A
SGnd
AN4H
HC5 7A
^ ps
/ /Sc^U
/
/
/
/
/
HN7A
fa/74
P4F390N01
4F141N
90
Electrical system
Marea-Marea Weekend
Connector blocks
55.
Marea Weekend
28A
91
Electrical system
Marea-Marea Weekend
Connector blocks
55.
Dashboard/rear cables con nection
28A
RVn.d.
HR244C
HN244C
Bad.
AG n.d.
Gad.
ZB66
HG 6B
BR66
28 B
AG48B
Lad.
._ _
AB48B
Ar, ..or,
AB54
AG 54
AR48B
BR 53
Lad.
HN ad.
HR ad.
S134
R92A
RN ad.
BR 48B
HQ a d s .
Marea
28 B
8 7
AV238B
HN 86
L238A
S263
L238A
Automatic w i n d o w closure
Lad.
Lad.
Marea Weekend
28C
Automatic w i n d o w closure
28C
[c*l H V 2 7 0 .
C L 236B .
CB 236B
RV92A
NZ 56A
CB7D
CB7D
Marea Weekend
92
Publication
no.
506.763/01
Marea-Marea Weekend
Electrical system
Connector blocks
55.
34B
Copyright
Fiat Auto
93
Electrical system
Marea-Marea Weekend
Connector blocks
55.
Dashboard/front left door cables connection
36
94
Electrical system
Marea-Marea Weekend
Connector blocks
55.
Heated rear w i n d o w
39
MN 236B
MN4E
Marea Weekend
Marea
ZJQ
Heated rear w i n d o w
39
41
R4E
RNad
N18
ARrvd
Marea
41
42
44
V236B
NZ n.d
Marea Weekend
43
HB13
95
Electrical system
Marea-Marea Weekend
Connector blocks
55.
4g
46
H4F
NZ42
A^J
48A
Radio w i t h clock
48 B
48C
Radio w i t h clock
NZ n.d.
BN n.d.
H248
BR28B
AR28B
RG n.d.
AB 28B
SN n.d.
AG28B
ZN 248
BN n.d.
RG n.d.
96
gQ
SN n.d.
NZ n.d.
Marea-Marea Weekend
Electrical system
Connector blocks
55.
51
52
RG35
SN 36
BN35
53
R e a r
l e f t
NZ36
53
loudspeaker
AR 286
AR 236A
BR28B
BR236A
Marea
Marea Weekend
Rear right loudspeaker
A G 28B
AB 28B
55
1370
HB6A
HM6A
AR4D
L6A
CN6A
RN12A
Cad.
MN 127
HB 158
M147
MB 2 5 0
LN6A
Rn.d
B4D
S 140
HG142
HN143
N137
BN 159
. R N 145
. C n.d.
. LN140
97
Electrical system
Marea-Marea Weekend
Connector blocks
55.
55
1581
@ R N 276
'
Cn.d.
HN6A
RN145
Cn.d.
HG6A
S121
55
LN195
1747
HB6A
HM6A
AR4D
L6ACN6A
RN12A
C
AB122
MN124
ad.
LN6A
MB 4 C
B 4D
NZ 8
A 121
HN6A
RV124
HG6A
mm
55
1998
AG
Rad.
ad.
L N 160B
212
HB6A
HM 6 A
AR4D
L6A
C N 6A
RN12A
C
n.d.
HN6A
HG6A
A B 120B
98
- A G 123A g t ]
HB158
A N 160B
M147
MB 257
G 160C
L R 160A
S160C
AG160B
HG142
HN143
N137
BN159
N191
R159
HM ad.
H B 158
BC190
M 147
C N ad.
MB 2 5 0
H189
L R 190
MB 4 C
S 190
B 190
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HN143
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ad.
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Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Connector blocks
55.
Front left/engine cables connection
55
1910-75
HB6A
HM6A
AR4D
L6A
CN6A
RN12A
C 200
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55
1910-100
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RG127
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BN4D
2387
HNad.
HG6A
Copyright
Fiat
Auto
VII-96 - Update
98/1
Electrical system
Marea-Marea Weekend
Connector blocks
98/2
VII-96 - Update
Publication
no.
506.763/02
Marea-Marea Weekend
Electrical system
Connector blocks
55.
55 B
Copyright
Fiat
Front
Auto
ri
9 h t / e n g i n e cables connection
VII-96 - Update
99
Electrical system
Marea-Marea Weekend
Connector blocks
55.
Fuel gauge sender unit
ggy^
NZ28C
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N56B
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c o
63
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GN4J
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N42
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100
VII-96 - Update
Electrical system
Marea-Marea Weekend
Connector blocks
55.
00
66
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LR28A
GR4E
N18
Marea Weekend
Left door mirror
03
Nad
MN 35
AG 35
BR35
Z36
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VII-96 - Updale
101
Electrical system
Marea-Marea Weekend
Connector blocks
55.
72
70
Rn.d
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70
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76
77
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BR36
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70
0
pushbutton
70
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102
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
gQ
91
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94
A.B.S. fuse
95
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105
Electrical system
Marea-Marea Weekend
Connector blocks
55.
00
0y
Rn.d.
N9
RN13
0g
00
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a r m
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106
VII-96 - Update
Publication
no.
506.763/02
Marea-Marea Weekend
Electrical system
__
Connector blocks
55.
106
1 Qyy^
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Copyright
Fiat Auto
107
Electrical system
Marea-Marea Weekend
Connector blocks
55.
110B
110B
A35
Nnd.
N n.d.
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110C
111 A
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door lock
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108
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Electrical system
Connector blocks
55.
114
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cn o cn cn cn
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117
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Copyright
Fiat
Auto
VII-96 - Update
109
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 2 1
P4F410N02
4F161N
110
V I I - 9 6 - Update
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 22
1 23
1910
1370
AN n.d.
1581
2387
R128B
1998
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TD
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c o n
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1998
M N 127.
TD
LN127
AN a d
AN 127
RV55
MN55
P4F411N02
Copyright
Fiat Auto
VII-96 - Update
111
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 26
4? #
AUTO
[1747]
212
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112
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
| 27
1370
1581
1998
Copyright
Fiat Auto
VII-96 - Update
113
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 28
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1 28A
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1910
2387
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114
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VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 29
1 29A
e n
9'
n e
c o o
li 9
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power fuse
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133
ag
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1 34
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Fiat Auto
VII-96 - Update
115
Electrical system
Marea-Marea Weekend
Connector blocks
LN
116
VII-96 - Update
Electrical system
Marea-Marea Weekend
Connector blocks
55.
139
140
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1370
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Copyright
Fiat Auto
VII-96 - Update
117
Electrical system
Marea-Marea Weekend
Connector blocks
55.
141
1581
1370
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118
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
VII-96 - Update
119
Electrical system
Marea-Marea Weekend
Connector blocks
55.
146
1 43
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120
V I I - 9 6 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
149
P4F447N01
4FZ02N
Copyright
Fiat
Auto
VII-96 - Update
120/1
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 52
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1581
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120/2
V I I - 9 6 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 65
1370
BV195
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Copyright
Fiat Auto
VII-96 - Update
120/3
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 58
1910
1581
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120/4
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VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 61
1747
CB160B
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162
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Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 64
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(3rd)
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1998
1 00
1998
SB 190
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165A
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122
Electrical system
Marea-Marea Weekend
Connector blocks
55.
166
e a
' " di
u s t m e n t
m o t o r
1998
1747
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1747
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T/47
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Copyright
Fiat
Auto
VII-96 - Update
123
Electrical system
Marea-Marea
Weekend
Connector blocks
55.
1 71
GN4D
/ |T
AN n.d.
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VII-96 - Update
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 7 0
1 SO
1
B181
M181
1 81
BR176
18
RV95
M 177
19
AB176
LR95
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28
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TI
183
1998
1998
V190
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125
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 84
Ignition
c o i l
(2nd)
1998
1 85
1998
B 190
SN190
N188
N188
C n.d
1 gg
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1 87
1998
1998
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1 88
tendon
1998
coil earth
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1998
N186
H 55
N148
4F177N
126
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Connector blocks
55.
1 90
1998
1
17
V 183
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37
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5
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AV167
24
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LN144
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54
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16
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sensor
1581
1998
1998
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1996
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sensor
1 93
1581
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VII-96 - Update
127
Electrical system
Marea-Marea Weekend
Connector blocks
55.
*|
1 95
1581
1
HM194
21
HZ 138
39
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HG 194
22
N141
40
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29
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30
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128
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
|
1 98
1581
1581
SN195
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200
1910
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201
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c o n t r
u n i t
(TD)
2387
1910-100
1910-75
Copyright
P'
Fiat Auto
VII-96 - Update
129
Electrical system
Marea-Marea Weekend
Connector blocks
55.
201
C Heater P ' 9
c o n t r
l unit (TD)
201
1910-100
1910-75
1910-100
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228.
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130
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
F
208
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re
209
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nta
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Copyright
Fiat Auto
V I I - 9 6 - Update
130/1
Electrical system
Connector b l o c k s
55.
224
22fi
1910
1910-100
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130/2
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
035
236A ^
ear
c a D
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t a
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connection
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Marea Weekend
236B
e a r
cable/tailgate connection
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237
238A
ZG86
BV86
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Copyright
Fiat Auto
ZB87
a d
L28B
BR87
131
Electrical system
Marea-Marea Weekend
Connector blocks
55.
238B
e a r
'
e c t n c
AV28B
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239
c a
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132
Marea Weekend
Publication
no.
506.763/07
Electrical system
Marea-Marea Weekend
Connector blocks
55.
244A
n t e
'
r a t e
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n t e
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r a t e
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Marea
Copyright
Fiat Auto
133
Electrical system
Marea-Marea Weekend
Connector blocks
55.
247
1370
1998
B 141 _
CN 141.
B n.d.
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248
249
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VG 2 4 9 .
134
Publication
no.
506.763/01
Electrical system
Marea-Marea Weekend
Connector blocks
55.
253B
254
HN256
Z2tlg*]
S120B
H 254
B120B
RG255A
Sn.d.
RGn.d.
C B 120B
M 209
L253A
_ BN n.d.
AR209
255
RN n.d.
B
N 253B
N206
AN a d .
H ad.
RQ253B
256
'
' ' 9
c o r |
t o l actuator
257
F u e
D u r r |
'
r e
'
a v
C ad.
HN253B
N ad.
BL a d .
MB 55
L253B
G253B []
253
BR 250
SN160A
259
Nad.
Nad
C253A
Copyright
Fiat Auto
S253A
BLad.
135
Electrical system
Marea-Marea Weekend
Connector blocks
55.
' M A X - D E F " microswitch
260
261
H 263B
AN r u t
263
M28A
Rn.d
N18
264
S28B
e a r
'' ht
N18
RN4Q
BR n.d.
Marea Weekend
265
136
e a r
Marea Weekend
n
c o u r t e s 1 : s
y light
VII-96 - Update
Publication
no.
506.763/02
Marea-Marea
Electrical system
Weekend
Connector blocks
55.
Fuel injection electronic control unit ( 2 3 8 7 T D )
2387
_1
_2
And
17
And
18
Rrvd
41
HM201
N148
42
HV55
V55
_3
B 200
19
Nad
44
_4
CN55
21
AV286
47
HV223
_5
G224
25
BL55A
50
AR55
_6
M285
26
RN55A
52
HR167
AN 201
27
AB139
53
SN 157
NZ55
28
LG55A
55
VNrvd
AG 287
29
MGn.d
CL55
33
ZB55A
N224
34
HL167
MN286
_8
_9
J
_n
12
J
Hrvd
35
14
AC 286
37
VB55A
15
NZ 288
38
LN167
16
Rn.d
39
C286
2371_
'
[I "p
IK
Alt
I"I
20,
38
11 i i i
i i
11
i i
I"I
nr
r i/lr<
55
id
VN 284
267R
P4F437N01
Copyright
Fiat Auto
VII-96 - Update
137
Electrical system
Marea-Marea Weekend
Connector blocks
55.
268
F r o n t /
NZn.d
B 279
AR279
LN275.
269
MN267R
27Q
271
Kick-down switch
BN283
N22
272
'9
273
switch solenoid
N269
AR268
N22
138
AR n.d
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
274
275
LN 268
R277
R268
Cad
Rad.
277
NZ 2 6 8 .
FIN 55
R275
RNad
2yg
HR 2 6 7 L
S267R.
AG 267L
BR267L
N267L
NZ n.d.
Nad.
AR268
AB267L
B268
280
281
Cad
Nad
HM267R
Nad
L 283
Copyright
Fiat Auto
V I I - 9 6 - Update
139
Electrical system
Marea-Marea Weekend
Connector blocks
55.
282
283
B282
BR270
L281
Nnd
VN269
Cn.d
B 283
Rn.d
284
VN267L
B267R
LN 267R
M 2671MB 2 6 7 L
MN 2 6 7 L
L267R
V267R
285
1910-75
1910-100
HV298
286
2387
HV 298
D i e s e l p u m p
2387TD
M266
287
2387
1910-100
2387
AG 266
C 266
Rad
AN 2 9 4
Rad.
AC 266
140
VII-96 - Update
Publication
no.
506.763/02
Electrical system
Connector blocks
55.
288
1910-100
2387
RBad
Rad.
RN a d .
RN295A
P C T t n e r m a l c o n t a c t
289
Rad.
ZN266
TD
( )
1910
2387
N 148
BR55
P C T neater resistor
290
TD
( )
1910
2387
SHHNZ304
Aiiro
[ $ ] NG 127
Potentiometer
(2387TD)
291
2387
H55A
N148
on
accelerator
pedal
292
e d a l
(2387TD)
2387
BL55A
Cad.
LR55A
Copyright
Fiat
Auto
VII-96 - Update
141
Electrical system
Connector blocks
55.
c
293
'
e a n e r
2387
HM6A
294
1910-100
O Q E A
Rn.d.
AO. 55
19
S55
NZad.
NL148
tl
B55
21
Gn.d.
12
BC201B
22
AV167
AR296
13
BR139
23
V296
HV285
14
ZB20B
24
M192
AN 287
15
L55
25
VG157
N224
16
SB 297
B 223
18
LN55
1910-100
13
>14
O Q C D
1910-100
RN55C
Rad.
RN 288
29$
1910-75
1910-100
G 298
142
Gad.
VN-96 - Update
Publication
no.
506.763/02
Electrical system
Marea-Marea Weekend
Connector blocks
55.
297
1910-100
298
1910-75
9QQ
'
A
Rad
Cad
Bad
AR296
BR229
N148
VG157
10
MG 55
V296
11
HV285
G296
Water temperature
(1910TD-75)
sensor
(preheating)
Of)n
switch
(1910TD-75)
1910-75
1910-75
Cad.
ZB201B
C 301
NZ148
3Q1
4 A 4
Diagnostic socket
(1910TD-75)
for
E.G.R.
system
1910-75
1910-75
C 300
Copyright
Fiat
Auto
VII-96 - Updatu
143
Electrical system
Connector blocks
55.
303
D i e s e l
304
TD
TD
NQ127
R 303
R 303.
HN127
R127
305
1910-75
TD
MO 55
NG127
R303.
MN55.
N232
144
.RG127
MV127
Vtl-96 - Update
HN127
.RG127
Publication
no.
506.763/02
Marea-Marea Weekend
Electrical system
Key^
55.
4F191N
Copyright
Fiat Auto
VII-96 - Update
141
Key t o components
1 Front left lights cluster
2 Front right lights cluster
3 Power fuse box
4 Fuse and relay unit:
E1 Ignition switch discharge relay
E2 Horn relay
E3 Heated rear window relay
5 Dipped beam relay
6 Instrument panel:
A Auto transmission fault warning light
B Air Bag fault warning light
C Side lights warning light
D Main beam headlamps warning light
E Air cleaner clogged warning light
F Fuel injection fault warning light
G Low generator recharging warning light
H Low engine oil pressure warning light
I Seat belt warning light
J Handbrake on/low brake fluid warning light
K Brake pad wear warning light
L Fiat CODE fault warning light
M ABS fault warning light (ABS)
N Maximum turbocharging pressure warning
light
0 Heater plug warning light
P Trailer lights warning light
7 Stalk unit:
A Windscreen wiper speed switch
B Windscreen/headlamps/rear window wash
switch
C Rear window wiper switch
D Flasher button
E Dipped/main beam headlamps switch
8
9
10
10A
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
28
29
30
31
32
33
34
57
58
63
64
65
66
67
4F192N
68
69
70
72
Key-dependent
Electric sunroof
Electric sunroof
Electric sunroof
A.B.S. fuse
power relay
fuse
cables connection
control unit
116
117
120
121
Alternator
Rpm and T.D.C. sensor
Starter motor
Potentiometer on throttle valve
Compressor for air conditioner
Earth for electronic injection
Instrumented injector (1370)
Fuel injection relay (1370-1747-1998)
!
|
!
j
I
i
j
j
j
j
222
223
224
226
"MAX-DEF" microswitch
Tailgate lock/unlock actuator
Seat belts warning light switch
Heated seats fuse
Rear left courtesy light
296 Potentiometer
on
accelerator
lever
(191 OTD)
297 Fast idle valve (191 OTD)
298 E.G.R. electronic control unit (191OTD-75)
299 Water temperature sensor (preheating)
(191 OTD-75)
00 K.S.B. thermal switch (191 OTD-75)
301 KSB device (191 OTD-75)
302 Diagnostic
socket for
EGR
(191 OTD-75)
303 Diesel preheating fuse (TD)
304 Diesel preheating relay (TD)
305 Compressor
D-75)
disconnect
relay
Cable colour c o d e s
A
B
C
G
H
L
M
N
R
S
V
Z
AB
AG
AN
AR
AV
BG
BL
BN
BR
BV
BZ
CA
CB
CN
GN
GL
GR
GV
HG
HN
HR
HV
LB
LG
LN
LR
LV
MB
MN
NZ
RB
RG
RN
RV
SN
VB
VN
VR
ZB
system
(191 OT-
Light blue
White
Orange
Yellow
Grey
Blue
Brown
Black
Red
Pink
Green
Purple
Light blue-White
Light blue-Yellow
Light blue-Black
Light blue-Red
Light blue-Green
White-Yellow
White-Blue
White-Black
White-Red
White-Green
White-Purple
Orange-Light blue
Orange-White
Orange-Black
Yellow-Black
Yellow-Blue
Yellow-Red
Yellow-Green
Grey-Yellow
Grey-Black
Grey-Red
Grey-Green
Blue-White
Blue-Yellow
Blue-Black
Blue-Red
Blue-Green
Brown-White
Brown-Black
Black-Purple
Red-White
Red-Yellow
Red-Black
Red-Green
Pink-Black
Green-White
Green-Black
Green-Red
Purple-White
Marea-Marea
Weekend
Section 55 D
Analytical charts
Fault diagnosis
electrical system
Marea-Marea Weekend
Fault diagnosis
Analytical charts
55D.
Chart N
Chart 1
Functions involved
Side lights and warning light - Dipped beam headlamps - Main beam
headlamps and warning light - Number plate lights
(page 1)
Chart
Central locking
Direction indicators and warning light - Hazard warning lights Braking lights - Reversing lights
(page 19)
Chart
(page 25)
Chart
(page 31)
Chart
(page 43)
4F299A
Copyright
by Fiat Auto
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
working
Not OK
Not OK
OK
The side lights and the number plate lights are not
working
In versions fitted with a Check Panel, the breaking inthe wiring or the failure of the bulb for one of
the lights is signalled, but a general supply failure for the lights is not reported and should be analyzed
as indicated.
Check the condition of fuses
2 and 3 in the junction unit
4
Not OK
OK
OK
OK
Not OK
Not OK
Copyright
by Fiat Auto
Fault diagnosis
Marea-Marea Weekend
Analytical charts
55D.
Ponticellare i cavi colore AG
e GV sul connettore B del
devioguida 7
OK
OK
Verificare
I'integrita
del
commutatore di accensione
12, revisionarlo o sostituirlo
OK
Ripristinare
cavo colore
guida 7 e il
accensione
OK
Non OK
Revisionare o sostituire
commutatore 12
Non OK
Con
chiave
su
MAR,
verificare la presenza di tensione sul cavo colore GV del
commutatore di accensione
12
Non OK
Con
chiave
su
MAR,
verificare la presenza di tensione sul cavo colore GV
connettore B devioguida 7
la continuita del
GV tra il deviocommutatore di
12
Non OK
Con
chiave
su
MAR,
verificare la presenza di tensione sul cavo colore AG del
commutatore d'accensione
12
Non OK
Verificare
I'integrita
del
commutatore d'accensione
12
il
Le luci di posizione anteriore sinistra, posteriore destra e la luce targa sinistra non funzionano
Non OK
Verificare la presenza di un
cortocircuito neH'impianto e
sostituire il fusibile 3
OK
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
Not OK
Overhaul or replace
junction unit 4
the
The right front, left rear side lights and the right no. plate lights are not working
Not OK
Not OK
Not OK
Not OK
OK
OK
OK
OK
4F303A
Copyright
by Fiat Auto
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
OK
Not OK
Not OK
Overhaul or replace
junction unit 4
the
Not OK
Not OK
Not OK
OK
OK
working
OK
OK
Not OK
Print no.
506.763/07
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
OK
Not OK
Not OK
Overhaul or replace
junction unit 4
the
Not OK
Not OK
Not OK
OK
OK
working
OK
OK
Copyright
by Fiat Auto
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
Versions
Panel:
without
Check
OK
Not OK
Overhaul or replace
junction unit 4
Not OK
Not OK
the
OK
4F306A
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
Not OK
Not OK
OK
OK
Not OK
Overhaul or replace
junction unit 4
Not OK
OK
OK
Not OK
Versions without
Check
Panel:
With the lights on, check for
voltage at the GR coloured
cable connector G pin 9 of
the junction unit 4
Versions with Check Panel:
With the lights on, check for
voltage at the GR coloured
cable connector C pin 4 of
the Check Panel 6
Not OK
the
OK
Copyright
by Fiat Auto
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
working
Not OK
Overhaul or replace
junction unit 4
the
Not OK
Not OK
Not OK
Not OK
Overhaul or replace
junction unit 4
Not OK
OK
OK
OK
working
working
the
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
OK
Not OK
OK
OK
OK
Not OK
Overhaul or replace
junction unit 4
Not OK
OK
Not OK
Not OK
Versions without
Check
Panel:
With the lights on, check for
voltage at the HL coloured
cable, connector E pin 10 of
the junction unit 4
Versions with Check Panel:
With the lights on, check for
voltage at the HL coloured
cable, connector C pin 8 of
the Check Panel 6
Not OK
the
OK
Copyright
by Fiat Auto
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
Not OK
OK
OK
OK
Not OK
Overhaul or replace
junction unit 4
Not OK
OK
Not OK
the
OK
10
Print no.
506.763/01
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
working
Not OK
Not OK
Overhaul or replace
junction unit 4
OK
Both the dipped headlamps are not w o r k i n g opreated by the steering column s w i t c h
Bridge HR & CB coloured
cables at connector B of st.
column switch unit 7
the
unit
OK
Not OK
Not OK
Overhaul or replace
junction unit 4
Not OK
OK
Both the dipped headlamps are not w o r k i n g with the main b e a m headlamps
Bridge the R and HR
coloured cables at the
dipped headlamps relay 5
the
on
OK
OK
Not OK
4F311A
Copyright
by Fiat Auto
11
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
Not OK
Not OK
Not OK
Not OK
Overhaul or replace
junction unit 4
Not OK
Not OK
OK
OK
OK
The left d i p p e d h e a d l a m p is n o t
the
working
OK
12
Print no.
506.763/07
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
OK
Not OK
OK
OK
Not OK
Overhaul or replace
junction unit 4
OK
Not OK
Not OK
the
Not OK
Not OK
OK
Copyright
by Fiat Auto
13
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
OK
Not OK
OK
OK
Not OK
Overhaul or replace
junction unit 4
OK
Not OK
Not OK
the
working
Not OK
Not OK
Overhaul or replace
junction unit 4
OK
the
4F314A
14
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
Not OK
Not OK
OK
OK
Not OK
Overhaul or replace
junction unit 4
OK
OK
Not OK
Not OK
the
Copyright
by Fiat
Auto
Not OK
15
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
OK
Not OK
Not OK
OK
OK
Not OK
Overhaul or replace
junction unit 4
OK
OK
Not OK
Not OK
the
4F316A
16
Print no.
506.763/01
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
T h e main b e a m h e a d l a m p s w a r n i n g l i g h t a r e n o t
With the lights on, check for
voltage at the LB coloured
cable connector J pin 6 of
the junction unit 4
working
Not OK
Overhaul or replace
junction unit 4
Not OK
Not OK
Not OK
the
OK
OK
OK
4F317N
Copyright
by Fiat Auto
17
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
4F318A
18
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
working
Not OK
OK
Not OK
Not OK
Not OK
Not OK
Not OK
OK
Not OK
OK
OK
working
OK
4F319A
Copyright
by Fiat Auto
19
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
4
OK
*
Bridge the N coloured cable
for the push buttons 73,
connector A w i t h an earth
OK
Restore continuity of N
coloured
cable
between
push buttons 73 & earth 22
OK
OK
Not OK
Not OK
Not OK
4
Extract connector A for the
push buttons 73 from its
housing & bridge CB/R and
N/CN coloured cables
4
Not OK
Not OK
OK
*
Extract con. for elec. w i n dows motor 76 from its housing & connector A for Ctrl unit
244: bridge BV/ZG coloured
cables at control unit 244
(pin 8 & 9) and insert an
ohmmeter
btwn
BV/ZG
coloured cables at con. of
elec. window motor 76
OK
20
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
Not OK
The right front electric w i n d o w is not working operated by the driver's side panel
Check the condition of the
fuse 8 in the junction unit 4
Not OK
Not OK
OK
OK
OK
Not OK
OK
Copyright
by Fiat Auto
21
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not
OK
OK
Not OK
OK
OK
OK
Not OK
OK
Not OK
Not OK
Extract the con. for the panel 74 from its housing &
connector A for control unit
244:
bridge the G N / S B
coloured cables at the control unit 244 (pin 2 & 6) &
insert an ohmmeter btwn
the G N / S B coloured cables
at connector for panel 74
4F322N
22
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
working
OK
OK
Not OK
Not OK
Not OK
4F323N
Copyright
by Fiat Auto
23
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
4F324N
24
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
working
Not OK
Not OK
Not OK
Not OK
Not OK
OK
Not OK
OK
Check for voltage at the R
coloured cable for fuse 81
OK
OK
With ignition on, check for
voltage at the AR cable for
the rear electric w i n d o w s
control unit 238, connector
B pin 11
OK
Bridge N coloured cables at
electric windows control
unit 238, connector A pin 3
& 4 & connector B pin 12
Not OK
With the ignition on, check
for voltage at the R coloured
cable for the rear electric
w i n d o w s inhibitor button
80
4F325N
Copyright
by Fiat
Auto
25
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
OK
Extract the connector for the
inhibitor button 80 from its
housing,
bridge the R
coloured cable with the C
coloured cable
OK
Not OK
Check the condition of the
electric rear windows con
trol unit 238
Not OK
Not OK
Not OK
OK
OK
OK
OK
4F3Z6N
26
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
Not OK
Extract connector A for the
panel 78 from its housing
and connector B for control
unit 238, bridge the A N / A V
coloured cables at control
unit 238 (pin 3 & 4 ) and i n sert an ohmmeter between
the A N / A V coloured cables
at the panel 78 connector
Not OK
OK
Check the condition of the
control unit 238
Not OK
Not OK
Not OK
OK
OK
OK
OK
Check condition of electric
w i n d o w control panel 82
OK
Copyright
by Fiat Auto
27
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
Extract the con. for the panel from its housing and con.
B for control unit 238,
bridge the LV/LN coloured
cables at the control unit
238 (pin 7 & 8) & insert an
ohmmeter btwn the LV/LN
coloured cables at the connector for the panel 82
Not OK
Not OK
OK
Check the condition of the
control unit 238
The right rear electric w i n d o w is not w o r k i n g operated by the left front panel
With the ignition on, check
for voltage at the C coloured
cable for the electric w i n dow control panel 78B
Not OK
Not OK
OK
Check the condition of the
electric
window
control
panel 78B
OK
Bridge the N coloured cable
for the panel 78B with an
earth
OK
Not OK
Extract connector B for the
panel 78 from its housing,
bridge the GV/C & N/GN
coloured cables
OK
OK
Not OK
Extract connector B for the
panel 78 from its housing,
bridge the GN/C & N/GV
coloured cables
28
Print no.
506.763/01
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
Extract connector B for the
panel 78 from its housing
and connector B for control
unit 238, bridge the GN/GV
coloured cables at control
unit 238 (pin 1 7 2) and insert an ohmmeter between
the GN/GV coloured cables
at connector for panel 78
Not OK
OK
Check the condition of the
control unit 238
Not OK
Not OK
Not OK
OK
OK
OK
OK
Copyright
by Fiat Auto
29
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
Extract the connector for
panel 83 from its housing
and connector B for control
unit 238, bridge the BN/BV
coloured cables at control
unit 238 (pin 5 & 6) and i n sert an ohmmeter btwn the
BN/BV coloured cables at
the connector for panel 83
Not OK
OK
Not OK
Not OK
Not OK
OK
Not OK
Not OK
OK
30
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
working
Not OK
Not OK
Not OK
Not OK
Not OK
OK
Not OK
OK
OK
Bridge the N coloured cable
at the control unit 244, pin
13 connector B with an
earth
Not OK
Extract connectors 35 &
244-B from their housings,
bridge the H/G coloured cables at control unit 244 (pin
5 & 4) and insert an ohmmeter at the H/G coloured
cables for connector 35
31
Fault diagnosis
Marea-Marea
Weekend
Analytical charts
5
OK
Not OK
Not OK
OK
Not OK
Not OK
Not OK
OK
OK
OK
OK
Not OK
4
4F332N
32
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
Not OK
Not OK
OK
The central locking does not lock the doors operated by he receiver
Not OK
Restore continuity of A
coloured cable between receiver 107A and control unit
244, connector C, pin 6
Not OK
OK
The central locking does not unlock the doors operated by the receiver
Not OK
Not OK
OK
4F333N
Copyright
by Fiat Auto
33
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
The c e n t r a l l o c k i n g is n o t w o r k i n g o p e r a t e d b y t h e a l a r m d e v i c e c o n t r o l u n i t
OK
OK
Not OK
Not OK
Not OK
Not OK
OK
OK
Not OK
Not OK
4F334N
34
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
The central locking does not lock the doors operated by the left front lock
OK
Not OK
Not OK
OK
Not OK
Not OK
OK
OK
Not OK
4F336N
Copyright
by Fiat
Auto
35
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
The central locking does not lock the doors operated by the right front lock
OK
Not OK
Restore continuity of A
coloured cable btwn control
unit 244 & connector 36
Not OK
OK
Not OK
Not OK
OK
OK
Not OK
4F336N
36
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
OK
Not OK
Not OK
The central locking does not unlock the doors operated by the left front lock
OK
Not OK
Not OK
Not OK
OK
OK
Copyright
by Fiat Auto
37
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Bridge the B/N coloured cables at the left front lock assembly 110
OK
Not OK
Not OK
The central locking does not unlock the doors operated by the right front
Bridge the N coloured cable
at the right front central
locking 111 with an earth
lock
OK
Not OK
Not OK
Not OK
OK
38
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
OK
OK
Not OK
Not OK
working
Not OK
Not OK
Not OK
OK
OK
4F339N
Copyright
by Fiat Auto
39
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
working
Not OK
Not OK
Not OK
OK
OK
working
Not OK
OK
4F340N
40
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical c h a r t s
5
Not OK
Not OK
OK
Not OK
Not OK
Not OK
OK
OK
Copyright
by Fiat Auto
41
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
4F342N
42
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
working
OK
OK
Restore
cont.
for
LB
coloured cable b t w n switch
23 & st. col. switch unit 7
OK
Replace
direction
indicataors/hazard w / l i g h t s i n termittent device G in st. col.
switch unit 7, or overhaul
steering col. switch unit 7
Not OK
OK
OK
Not OK
Not OK
The
OK
Not OK
Not OK
Copyright
by Fiat
Auto
43
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
OK
Not OK
Overhaul or replace
junction unit 4
Not OK
the
working
Not OK
OK
Not OK
OK
OK
Not OK
OK
Not OK
4F344N
44
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
55D.
OK
Restore continuity of LR
coloured cable b t w n switch
23 & st. col. switch unit 7
OK
Not OK
Left branch of direction indicators/hazard w / l i g h t s not w o r k i n g operated by st. col. switch unit
Bridge the L R / A coloured
cables at connector C of st.
col. switch unit 7
OK
OK
Not OK
Right branch of direction indicators/hazard w/lights not w o r k i n g operated by st. col. switch
Bridge LR/AN coloured cables at connector C of st.
col. switch unit 7
unit
OK
OK
Not OK
Copyright
by Fiat
Auto
45
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
switch
OK
OK
Not OK
switch
OK
OK
Not OK
Not OK
working
OK
46
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
Not OK
The right front and side direction indicators are not working
Not OK
Not OK
OK
working
Not OK
Not OK
OK
OK
Copyright
by Fiat
Auto
47
Fault diagnosis
Marea-Marea Weekend
Analytical charts
55D.
OK
Not OK
Not OK
Not OK
Not OK
OK
OK
OK
48
Print no.
506.763/01
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
Not OK
working
Not OK
Not OK
OK
Not OK
OK
OK
Not OK
Copyright
by Fiat Auto
working
Not OK
49
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
OK
Not OK
OK
OK
Not OK
Not OK
working
Not OK
Not OK
OK
OK
OK
50
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
Not OK
OK
Not OK
working
Not OK
Not OK
OK
Not OK
OK
OK
Not OK
4F351N
51
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
OK
Not OK
Overhaul or replace
junction unit 4
Not OK
the
working
OK
OK
Not OK
Not OK
Not OK
OK
working
Replace the warning light in
question in the instrument
panel 6, or overhaul the i n strument panel 6
4F352N
52
Print no.
506.763/01
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
OK
Not OK
Not OK
working
OK
Not OK
Not OK
Overhaul or
switch 23
Not OK
Check
hazard
light A
switch
Not OK
replace
the
4F353N
Copyright
by Fiat Auto
53
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
OK
OK
Not OK
OK
OK
Not OK
Not OK
OK
Not OK
OK
4F354N
54
Print no.
506.761/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
Not OK
OK
OK
Not OK
Not OK
Not OK
OK
With
reverse
engaged,
check for voltage at the BN
coloured cable for the left
rear light cluster 16
Not OK
With
reverse
engaged,
check for voltage at the BN
coloured cable connector G
pin 6 of the junction unit 4
Not OK
working
OK
4F355N
Copyright
by Fiat Auto
55
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
OK
With
reverse
engaged,
check for voltage at the B
coloured cable of the right
rear light cluster 17
OK
OK
Not OK
Not OK
With
reverse
engaged,
check for voltage at the B
coloured cable connector G
pin 7 of the junction unit 4
Not OK
working
On versions equipped w i t h a Check Panel, the break in the wiring or the failure of the bulb for one of
the t w o side brake lights - NOT the additional one is signalled but a general supply failure, analyzed
later, is not identified
Check the condition of the
fuse 1 in the junction unit 4
Not OK
OK
Overhaul or
switch 40
OK
OK
replace
the
Not OK
Not OK
56
Print no.
506.763/01
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
Not OK
OK
OK
Not OK
OK
Not OK
working
Not OK
OK
Not OK
OK
4F357IM
57
Fault diagnosis
Marea-Marea Weekend
Analytical charts
5
+
With the pedal pressed,
check for voltage at the RG
coloured cable of the left
rear light cluster 16
OK
OK
Not OK
Not OK
Not OK
Not OK
4
With the pedal pressed,
check for voltage at the RG
coloured cable connector E
pin 12 - versions without
Check Panel - or pin 3 - versions w i t h Check Panel - of
the junction unit 4
Not OK
4
Only versions with Check
Panel
With the pedal pressed,
check for voltage at pin 9,
connector C of the Check
Panel in the instrument
panel 6
The right brake light is not
working
OK
4
OK
4F358N
58
Print no.
506.763/01
Marea-Marea Weekend
Fault diagnosis
Analytical charts
5
OK
OK
Not OK
Not OK
Not OK
4F359N
59
Bodywork
Marea-Marea Weekend
Index
7
page
INTRODUCTION
- Introduction
SAFETY
- Passive safety
- Seats
- Protection against fire
2
6
8
E C O L O G Y AND T H E ENVIRONMENT
- Recyclability of materials
- Thermoplastic and thermosetting materials
9
11
BODYSHELL
- Protective treatments
- Painting
- Sound-proofing
- Impact diagnosis
- Diagram for checking underbody
- Typical measurements
12
14
15
18
19
20
R E P L A C I N G BODY PANELS
- Graphic index for external panels
28
- Graphic index for structural panels
29
- Warnings for operators
30
- Accident prevention measures
30
- Warnings for replacements
31
- Warnings for welding
31
- General instructions for repairs
32
- Symbols
37
- Front wing
38
- Rear wing (Weekend)
40
- Rear wing and wheel arch (Saloon)
49
- Side member and underdoor reinforcement 56
- Roof
63
- Rear light cluster housing (Saloon)
67
- Rear light cluster housing (Weekend)
71
- Rear cross member cover (Saloon)
75
- Rear cross member cover (Weekend)
79
Partial rear cross member cover
82/1
- Rear floor and side members
83
- Front cross member
91
- Complete front panel
95
- Partial front panel
101
- Front pillar
106
- Centre pillar
110
V I - 9 6 - Cancels a n d replaces
Bodywork
Marea-Marea Weekend
Introduction
7
INTRODUCTION
This collection of technical information is designed to support the FIAT training programme for the new
models - the Marea (4 door) and the Marea Weekend (5 door). On the basis of company expectations,
the new vehicle will consolidate the goals (comfort, practicalness, robustness) already achieved by the
Bravo and Brava models.
The subjects, above all, deal with the technical innovations, giving priority to descriptions and training.
The profile of the vehicle has an optimum "CX" (drag) factor w h i c h multiplied by the surface area gives
the results indicated in the table.
Marea
Marea Weekend
0,33
0,32
0,67
0,65
Marea
Marea Weekend
P4F01BM02
Copyright
by Fiat Auto
Bodywork
Marea-Marea Weekend
Safety
70.
PASSIVE S A F E T Y
The outstanding achievements in the design of the product have led to exceptional results, above all, in
the area of passive safety. The bodyshell has been design to crumple in a controlled manner in the case
of front, side or rear impacts and absorb the energy produced by the impact without affect the vital space
of the passenger compartment, where a survival chamber will remain intact. This structure allows good
resistance against the forces and distortions deriving from the difficult situations in w h i c h the vehicle
may find itself.
The bending and torsional rigidity of the Marea bodyshell, in addition to guaranteeing the vehicle exceptional passive resistance qualities, create a sensation of solidness and, more generally, comfort,
maintaining the correct suspension angles and offering precise driving. If we subject the bodyshell to a
torsional force (A) of 1035 kgm, it only tends to bend a degree. Likewise, it tends to yield 1 mm when a
bending force (B) of 500 kg is applied.
These are high rigidity values which translate into multiple advantages:
- less vibrations
- less noise
- better driveability
- improved resistance to the breakages caused by the use of the vehicle on unmade roads.
- sensation of compactness of the vehicle
- improved maintenance in time of the overall qualities of the vehicle.
P4F02BM01
Torsional rigidity
P4F02BM02
Bending rigidity
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Safety
7
Marea
Marea Weekend
Stripped bodyshell
1035
Bodyshell
complete w i t h
moveable parts
1744
1308
Stripped bodyshell
550
545
Bodyshell
complete w i t h
moveable parts
660
TORSIONAL
RIGIDITY
(kgm/degree)
BENDING
RIGIDITY
(kg/mm)
The table contains the torsional and bending rigidity figures for the bodyshell both stripped and c o m plete with moveable parts.
Copyright
by Fiat Auto
Bodywork
Marea-Marea Weekend
Safety
7
P4F04BM01
1. Roof
2. Dashboard cross member
3. Floor panel reinforcement
NOTE
In the case of operations to the bodyshell, if distorted, the structural reinforcements shown in
the diagram, are always replaced.
Print no.
506.763/07
Marea-Marea Weekend
Bodywork
Safety
7
P4F05BM01
NOTE
Copyright
by Fiat Auto
indicated
in
Bodywork
Marea-Marea Weekend
Safety
7
SEATS
To safeguard the integrity of the passenger compartment and consequently that of the passengers, safety devices have been adopted for the front and rear seats. The structure of all the seat cushions is
equipped w i t h an anti-submarining effect. In addition, the shape of the head restraints ensure they are
fully effective. The parts w i t h the greatest innovative safety features are to be found in the backrest.
Front seats
In the case of a rear impact at 50 km/h, the rear seats are designed to yield structurally (see fig. A ) .
Thanks to the presence of a slot (1), the frame tends to bend backwards and absorb part of the impact,
without causing damage to the rear passengers.
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Safety
7
Rear seats
The backrests for the rear seats are made from sheet metal and are reinforced by t w o high resistance
cross members ( 1 ) . Regulation ECE 2 provides for a structural resistance w i t h deformation of below 30
cm at an impact of 36 km/h w i t h a load of t w o suitcases weighing 18 kg.
The Marea's reinforcements meet these conditions with a load of 25 kg at a speed of 50 k m / h .
1.
2.
3.
4.
Anti-intrusion bars
Sheet metal backrest
Anti-submarining cushion
Reinforcement tubes
P4F07BM02
Copyright
by Fiat Auto
Bodywork
Marea-Marea Weekend
Safety
7
P R O T E C T I O N
A G A I N S T
F I R E
The collection of measures designed to protect the vehicle against fire (FPS) after an impact consist of:
- the adoption of metal fuel pipes behind the engine exhaust;
- the fitting of an inertia switch (detail A) to cut off the flow of fuel. The system includes the fuel pump
cut off and the single-acting valve on the appropriate pipe;
- the introduction of an automatic release system for the doors in the case of an impact, for all versions
fitted w i t h central locking;
- screened electric cables fitted with protective fuses;
- anti-misfiring shields (1) on the exhaust system;
- fire-proof interior fittings.
In addition, in order to reduce the risk of damage to the fuel tank (in accordance w i t h regulation ECE 2)
with the consequent escape of inflammable liquid, in the case of an impact the design makes provision
for the partial release of the tank from the underbody.
The anchorage tabs (2) have a more restrained section (see drawing) designed to break in the case of a
collision. In this way the tank (3) remains suspended from the vehicle by means of the anchorage bands
(4), but is free from any compressions or breakage due to the impact.
P4F08BM01
N O T E
tabs (2).
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Ecology and the environment
7
RECYCLABILITY OF M A T E R I A L S
Solving the problem of recycling plastic materials is born in the design stage. During this
state the possibility of reusing the material for
future components should be evaluated.
P4F09BM01
Currently only the metal parts of vehicles which reach "the end of their life" are recovered to produce
new steel and new aluminimum castings.
All of the remaining parts of vehicle, which correspond to around 25% of the weight, are abandonned or
eliminated.
This means that an enormous amount of materials and energy are wasted as well as contributing to i n creasing the size of the problem of the disposal of solid waste.
This model has been designed so that all of its plastic and elastomer (rubber) components w e i g h i n g
more than 50 grams are marked with coded symbols thereby allowing the material to be recognized during the recycling stage and ensuring that all components are recyclable.
Recycling does not make it possible to o b tain a component equal to the starting p r o d uct because the material can no longer
guarantee the necessary reliability properties or it may no longer be suitable.
From the plastics which make up the seat
upholstery we obtain insulating materials
for the building industry.
For other plastic materials recycling is carried
out in cascade fashion: for example from the
plastic from bumpers we obtain the material
for wheel arch linders which, in the next
stage, become the elements for producing
sound-insulation panels and finally end up
as fuel for furnaces.
P4F09BM02
Recycling therefore involves three successive generations of vehicles, making a contribution t o savings
in raw materials.
Copyright
by Fiat Auto
Bodywork
Marea-Marea Weekend
Harmful materials
In accordance with recent regulations, the following materials have been eliminated from the design of
the Marea:
MATERIAL
APPLICATIONS
Cadmium
Absent
CFC
(chlorofluorocarbons)
- Seat upholstery
- Plastic elements
- Air conditioners
Absent
HCFC
- Steering wheel
(hydrochlorofluorocarbor s) - Gear lever knob
Absent
Asbestos
Formaldehyde
Beryllium oxide
10
MAREA O B J E C T I V E
Absent
^ 70 ppm
Absent
Absent
Print no.
506.763/01
Bodywork
Marea-Marea Weekend
T H E R M O P L A S T I C AND T H E R M O S E T T I N G M A T E R I A L S
Below is a table with symbols and descriptions to allow the identification of materials.
This is designed to help the selection and use, in a service situation, of the most suitable products from
those available on the market, for washing the interior, painting plastic materials, repairs, sticking, etc.
The aim is to avoid possible damage from the use of products which are incompatible w i t h one another.
ISO S Y M B O L
F A M ILY N A M E
AOS
ACRYLONITRYL -BUTADENE - STYRENE
CA
CELLULOSES
6 atoms of C in a monomer structure
PA 6
PA 66
two monomer structures each with 6 atoms of C
POLYAMMIDES WITH;
11 atoms of C in a monomer structure
PA 11
12 atoms of C in a monomer structure
PA 12
POTP
polybutylene
POLYESTERS
polybutylene
PETP
PC
POLYCARBONATES
ALLOYS OF POLYCARBONATE/ABS
PC + ABS
PE
POLYTHENES
THERMOPLASTICS
PMMA
METACRYLICS
POM
ACETALS
PP
POLYPROPYLENES
PPOX
MODIFIED POLYPHENOL - OXIDES
THERMOPLASTIC ALLOYS
PPOX + PA
(POLYPHENOL OXIDES/POLYAMMIDES)
PSE
POLYSTYRENES (EXPANDED)
PVC-P
FLEXIBLE VINYLS
PVC
RIGID VINYLS
Copolymer styrene - acrylonitryl
SAN
STYRENES
Copolymer styrene - maleic anhydride
SMA
MF
MELAMMINES
PF
PHENOLS
POLYURETHANES
PUR
UF
URICS
THRMHRD. MAT.
POLYESTERS
for compression moulding (SMC)
UP
UNSATURATES
for injection moulding (BMC)
THERMOHARDNING MATERIALS
LOADS & REINFORCEMENTS
ISO SYMBOL
GB
GF
GH
M
T
WD
SF
DESCRIPTION
Balls of glass
Glassfibre
Glass matting
Minerals
Talc
Wood chippings
Textile fibres (synthetic or natural)
ELASTOMER
ISO SYMBOL
ACM
AU
CSH
CR
EPDM
ECO
PM
MVQ
NBR
NR
IR
SBR
11R
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by Fiat Auto
MATERIALS
TYPE OF RUBBER
CHLOROETHYL-VINYL-ETHER-ACRYLATE
POLYURETHANE
CHLOROSULPHANATE POLYTHENE
CHLOROPRENE
MONOMER ETHYLENE PROPYLENE DIENE
EPIHYDROCHLORINE
CARBON FLUORIDE
SILICON
ACRYLNITRYLBUTADIENE
NATURAL ISOPRENE
SYNTHETIC ISOPRENE
BUTADIENE STYRENE
ISOBUTYLENE/ISOPRENE
11
Bodywork
Bodyshell
7
PROTECTIVE TREATMENTS
Protective treatment
The choice of materials which make up the bodyshell is designed to achive an excellent standard of
quality in order to offer a high quality product w h i c h is long lasting.
60% of the weight of the bodyshell is produced from galvanized steel panels. Of this 60%, 75% of it is
twin galvanized.
As far as the outside panels are concerned, the figure for galvanized panels reaches 90%.
The galvanizing effect is produced by different technological processes:
- deposition through a galvanizing process; the panel is immersed or comes into contact w i t h a bath,
according to whether it is a twin or single galvanizing process, resulting in a high standard surface f i n ish;
- fire deposition; the melted zinc is deposited thermally on the panel. This process, which is used mainly for structural elements of the bodyshell, produces thicknesses of up to 20 microns, compared w i t h
the 7 microns obtained with the galvanizing process.
The synthetic wheel arch liners also have anti-corrosion functions.
The protection of all the box sections is achived by using galvanized panels which, after painting, are
sprayed internally w i t h wax based oil to prevent internal oxidation.
The following areas of the bodyshell, felt to be the most critical, are also subject to treatment:
- Suspension mountings
- Tank mounting
- Exposed seat belt mounting
- Bodyshell/mechanical components connecting area
12
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Bodyshell
7
PFI3BMOI
Copyright
by Fiat Auto
13
Bodywork
Marea-Marea Weekend
Bodyshell
7
PAINTING
Painting the bodyshell is now known to have t w o basic objectives: protection of the body panel against
environmental attacks and producing a shiny, rich colour in terms of aesthetics.
|| Q f i
Kg
IHB^LW
Vemiciatura originale
Peinture originale/Original painting
Originallackierung/Pintado original
Colore/Teinte/Colour
Farbton/Color
BLACK Q
632
Codice/Code/Codigo
LACRIT - DELTRON
DELTA - REFLEX
0 #1
Vemiciatura originals
Peinture originale/Original painting
Originallackierung/Pintado original
Colore/Teinte/Colour
Farbton/Color
The table below indicates the range of pastel and metallic colours
for the t w o models of the Marea:
Codice/Code/Codigo
Kg
IHi^HP
B / B / M. S.
230
LACRIT - DELTRON
DELTA-REFLEX
P4F14BM01
Type
Code
Code PPG
Single layer
VR 249
577.022
Enamel Red
B/B
VR 1 6 9 / A
259.121
Lord Blue
B/B
VR 438
259.800
Bolsena Blue
B/B
VR 4 9 3 / A
259.812
Type
Code
Code PPG
Siena Red
M.S.
VR 1 0 6 / A
237.172
Pompei Red
M.S.
VR 1 0 7 / A
237.179
Tivoli Green
M.S.
VR 3 3 3 / A
237.392
Dark Green
M.S.
VR 336
237.325
Ice Blue
M.S.
VR 4 1 0 / A
237.901
Leader Blue
M.S.
VR 488
237.860
River Grey
M.S.
VR 6 0 5 / A
237.686
Vinci Grey
M.S.
VR 6 0 6 / A
237.685
Steel Grey
M.S.
VR 647
237.630
Luxor Beige
M.S.
VR 702
237.515
Silk Black
M.S.
VR 8 0 3 / A
237.521
Pastel
White
Metallic
14
Marea
Marea Weekend
Marea
Marea Weekend
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Bodyshell
7
SOUND-INSULATION
The EEC regulations imposed an external noise level of below 74 decibels for the Marea whilst, in effect,
at an average speed of 100 kph in fifth gear the noise level inside the passenger compartment reaches 70
decibels.
The improvement of driving comfort, understood as quietness and quality of life inside the passenger
compartment, has been achieved mainly by working on the following three areas of noise production:
- engine,
- rolling,
- aerodynamics.
All the engine types fitted on the Marea belong to a new generation with technological features also designed to improve the aspect of acoustics/vibrations.
This same concept is also valid for the components which transmit the drive, the suspension and the
bodyshell anchorages.
The aerodynamics are also safeguarded by the favourable shape of the vehicle; the care taken over these
components often have adverse effects on the acoustics:
- door handles,
- external rear view mirrors,
- bumpers,
- various profiles.
^
90
85
80
75
70
70dB
65
60
55
50
Copyright
75
by Fiat Auto
100
125
150
175
Km/h
15
Bodywork
Marea-Marea Weekend
Bodyshell
7
16
Marea-Marea Weekend
Bodywork
Bodyshell
7a
P4F17BM01
IMOTE
Taking into consideration the excellent level of acoustic comfort achieved, in the case of repair
operations it is necessary to guarantee that the same levels are achieved as during
construction.
Copyright
by Fiat Auto
17
Bodywork
Marea-Marea Weekend
Bodyshell
7
IMPACT D I A G N O S I S
This chapter is designed to highlight the most practical and appropriate way to work in order to allow
body fitters to achieve the best possible results.
Before starting to repair a vehicle, even if it is only slightly damaged, a series of checks should be carried
out.
Check with a template
These checks make it possible, amongst other things, to check that the infrastructure elements are not
very distorted in relation ot the original geometry, w h i c h w o u l d involve the removal of the mechanical
components and the repair of the vehicle at the repair bench.
The comparative measurements can be subject to appreciabledifferences ( 3 mm approx) w h i c h the
experience of the repairer will allow him to establish whether they are due to possible impacts or
whether they are due to manufacturing tolerances.
Start the check in a part of the vehicle not affected by the impact. For example, in the case of a vehicle
which has suffered a collision at the front, in order to check whether the structure has been distorted,
check points C-E = B-F; if there are not considerable differences in the length, move on to checking
points B-D = A-E. It is possible in this way to establish a more exact diagnosis before the repair.
P4F18BM01
Checking points
18
the mechanical
components
Print no.
damage.
506.763/01
Bodywork
Marea-Marea Weekend
Bodyshell
7
SEZIONE C-C
2269
948*5
640
<^_4j\-
678
126
2701
279,4*1
SEZIONE A-A
38,65
233'45"
465*1
17,5
Copyright
by Fiat Auto
19
Bodywork
Marea-Marea Weekend
Bodyshell
7
TYPICAL MEASUREMENTS
P4F20BM01
Measurements for checking windscreen housing, engine compartment and distance of front shock
absorber mounting turrets
20
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Bodyshell
7
P4F21BM01
P4F21BM02
Copyright
by Fiat
Auto
21
Bodywork
Marea
Bodyshell
7
P4F22BM01
P4F22BM02
, P4F22BM03
P4F22BM04
Measurements for checking distance between centre pillars for doors measured by the seat belt
mounting nuts and between the lock strikers (Marea)
22
Print no.
506.763/01
Marea
Bodywork
Bodyshell
7
P4F23BM02
P4F23BM03
Copyright
by Fiat Auto
23
Bodywork
Bodyshell
7
Marea Weekend
Measuring centre pillar housing and door housing dimensions (Marea Weekend)
Measurements for checking distance between centre pillars for doors measured by the seat belt
mounting nuts and between the lock strikers (Marea Weekend)
P4F22BM02
24
Print no.
506.763/01
Marea Weekend
Bodywork
Bodyshell
7
P4F25BM01
P4F23BM03
Copyright
by Fiat Auto
25
Bodywork
Matea
Bodyshell
7
26
Print no.
506.763/07
Marea Weekend
Bodywork
Bodyshell
7a
P4F27BM01
Copyright
by Fiat Auto
27
Bodywork
Marea-Marea Weekend
Replacement operation
Rear wing
and wheel arch
Rear wing
P4F28BM02
P4F28BM03
page 38
Marea: page 49
Roof
P4F28BM05
page 56
page 63
Marea: page 67
P4F28BM07
28
P4F28BM09
P4F28BM08
Marea: page 75
Print no.
506.763/07
Bodywork
Marea-Marea Weekend
P4F29BM07
G R A P H I C INDEX OF S T R U C T U A L PANELS
Replacement operation
Rear floor
and side members
P4F29BM02
page 83
page 91
page 95
Front pillar
Centre pillar
P4F29BM06
page 101
Copyright
by Fiat Auto
page 106
page 110
29
Bodywork
Marea-Marea Weekend
WARNINGS FOR O P E R A T O R S
General instructions
Given the high level of design of vehicles, it is vital, in order to achieve a good repair, not to leave anything to chance and to refit the components and parts exactly as they were originally (for example: thermal shields, wiring, pipes, in particular in the area of the exhaust).
In order to ensure a good repair:
- protect the delicate parts of the vehicle (seats, steering wheel, wings, etc.);
- use professional products and tools;
- adhere to the tightening torques;
- carry out a final check before handing the vehicle over to the Customer (adjust the clock, check the
operation of the anti-theft system, check the lighting and signalling devices, etc.).
Safety
The handling of certain devices (for example: spring/shock absorber assembly, automatic transmission,
etc.) and certain components (braking system, A.B.S., air-bag, etc.) requires special attention as regards
safety, cleanliness and, above all, care.
The symbol @ (warning) used in this manual warns that it is necessary to take special care whilst carrying out a procedure and that failure to observe this care can result in danger for the safety of the operator
or the safety of the vehicle.
Protective clothing
Make sure that, depending on the operations
to be carried out, protective goggles, e a r muffs, dust masks are w o r n . As a rule, protective overalls, gloves, shoes and headgear
should be worn.
Safety supports
After having raised the vehicle, positionon
suitable safety supports, such as chocks or
stands.
To identify the support points, refer to the
paragraph "VEHICLE SUPPORT POINTS".
Inflammable materials
Make sure that the earth lead for the
battery has been removed
before
starting any repair procedure (this is
to prevent short circuits or accidental
starting).
30
P4F30BM01
1.
2.
3.
4.
5.
6.
7.
8.
9.
Protective headgear
Ear-muffs
Welding gloves
Gloves
Protective shoes
Protective shield
Overalls
Dust mask
Protective goggles
Print no.
506.763/02
Marea-Marea Weekend
Bodywork
Replacing body panels
7
If welding has to be carried out near the tank, the petrol vapour separator or the active charcoal
filter, then they must be removed from their housing.
Always seal the free connections of the fuel pipes, the petrol vapour pipes and the brake fluid
pipes, each time the connectors are removed.
Do not smoke whilst carrying out repair procedures on the vehicle.
Do not use inflammable products to clean components.
Working environment
The working environment should be well
ventilated and well lit to ensure the safety of
the operators.
Since paint and sealant products can give off
toxic gases if heated, when cutting and removing damaged panels it is preferable to use
a power saw or chisel instead of an oxyhydrogen flame.
Use suction to contain the dust created.
Use exhaust fans for harmful gases (fumes
produced by welding, exhaust gases, etc.).
Make sure that the straightener is used correctly according to the procedures in the
Manufacturer's Manual.
in front of the
WARNINGS FOR R E P L A C E M E N T S
nn^a
It is always advisable to use genuine spares. This ensures the perfect outcome of the repair and
restores the original operating standards of the vehicle.
WARNINGS FOR W E L D I N G
Before carrying out electrical welding on the vehicle, remove the electronic
avoid them from being damaged (excess voltage, high temperatures, etc.).
control
units to
31
Bodywork
Marea-Marea Weekend
70.
GENERAL INSTRUCTIONS FOR REPAIRS
Introduction
For safety reasons and to improve the quality of repairs, it is forbidden to:
- replace a side member, semi bloc or bloc, without using a repair bench; the use of the bench makes it
possible to guarantee the restructuring of the vehicle with the original manufacturing measurements,
ensuring the correct position of the elements of both the forecarriage and the rear part of the vehicle;
- cut and weld any element of the bodywork and its internal reinforcement along the same line (see f i g ure 1 ) ; carried out correctly, the operation involves a gap of several centimetres between the t w o cutting lines in order to distribute the meltable points created by the welding (see figure 2 ) ;
- heat side members for straightening.
32
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Marea-Marea Weekend
Bodywork
Replacing body panels
7
Preliminary procedures
Establish the extent of the damage, check that there is no distortion to the connected components, by
checking the bodyshell alignment figures.
Carry out any straightening operations to the bodyshell using suitable methods (jigs, templates or
gauges), before cutting the component.
After this operation check that the components not being replaced are in tact.
P4F33BM01
When carrying out the operations described, adhere strictly to the safety
procedures.
Protective shoes, ear-muffs and gloves should be worn during the cutting operations, goggles or
a visor and gloves during the welding operations and a mask and gloves during painting
operations.
33
Bodywork
Marea-Marea Weekend
R e p l a c i n g body panels
70.
Preparing the edges of the bodyshell
1. R e m o v e the s p o t w e l d s a l o n g t h e entire p e r i m e t e r of the edge of the b o d y s h e l l , u s i n g a special c u t t e r .
2. R e m o v e the metal off cuts u s i n g pliers.
3. S t r a i g h t e n t h e edges w i t h a h a m m e r and d o l l y b l o c k .
4. R e m o v e the w e l d residues u s i n g a disc g r i n d e r .
5. A p p l y t h e IVI Epox e p o x i d e t y p e primer or an e l e c t r o - w e l d a b l e g a l v a n i z e d paint or an e q u i v a l e n t
p r o d u c t , t o the areas p r e v i o u s l y g r o u n d .
34
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Marea-Marea Weekend
Bodywork
Replacing body panels
70.
P4F35BM01
P4F35BM02
Using a spray gun, apply a layer of sealant to the contact edge between the wheel arch and the rear
wing.
35
Bodywork
Marea-Marea
Weekend
P4F36BM01
P4F36BM02
11. Damping panels. Fit the clamping panels to the inside of the wing.
12. Foam. Apply the foam through the openings shown.
13. Preparing any connections t o be shaded off and/or preparing the adjacent elements for shading off
and wet sanding with P1200 abrasive paper or abrasive polish.
14. Protection (after checking the tint).
Use industrial paper which does not release volatile impurities.
15. Blowing with compressed air and preparing for painting.
Wash with anti-silicon diluent and dry, then clean w i t h a chemical buffer.
16. Painting. Follow the technical specifications and the instructions for applying enamels, recommended in the technical charts from the manufacturer of the product used.
P4F36BM03
P4F36BM04
17. After painting, spray the product (wax based oil) into the parts which are not accessible, especially
the continuous weld seams.
36
Bodywork
Marea-Marea Weekend
70.
SYMBOLS
CUTTING WITH
HACK SAWING MACHINE
CHECKING GAPS
AND ALIGNMENTS
SPOT WELDING
CLEANING WITH
ROTARY BRUSH
STRAIGHTENING EDGES
MIG WELDING
REMOVING COMPONENTS
GRINDING
REMOVING EXCESS
OFFCUTS
APPLYING SEALANT
APPLYING
ANTI-OXIDANT
PROTECTIVES
APPLYING SEALANTS
APPLICATION OF HIGH
THICKNESS ELECTROWELDABLE PROTECTIVES
CENTERING COMPONENTS
APPLYING
PROTECTIVES
FIXING COMPONENTS
Copyright
by Fiat Auto
APPLYING PAINTS
APPLYING
TIVES
MEASURING
<
UNDERBODY
WAX
PROTEC-
S Y M B O L S IN I L L U S T R A T I O N S
CUTTING LINE
SPOT WELDING
....
MIG WELDING FOR FILLING
CONTINUOUS MIG WELDING
BRAZING
37
Bodywork
Marea-Marea Weekend
FRONT WING
Removing
Remove the front light cluster as illustrated in
Section 55 - Electrical equipment.
1. Undo the fixing bolts and the button using
tool 1878077000 for the front wheel arch
liner.
2. Remove the front wheel arch liner, undoing the fixing bolts.
3. Remove the side direction indicator acting
on the retaining tabs and disconnecting
the connection.
4. Undo the bolts fixing the bumper to the
front wing and the bolts fixing the w i n g to
the front panel.
5. Undo the bolts fixing the w i n g to the u n derdoor lining.
38
Bodywork
Marea-Marea Weekend
P4F39BM01
P4F39BM03
P4F39BM04
Copyright
by Fiat Auto
39
Bodywork
Marea Weekend
Replacement
(*)
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, which could impede the repair operations or be damaged during them.
Removing
Cut the part to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
P4F33BM01
40
Bodywork
Marea Weekend
Using a saw, cut the underdoor side member and the centre and rear pillars; these parts should then be
welded "edge to edge" using the continuous welding machine.
It is advisable to cut the wing using a hand saw in order not to affect the reinforcements
neath.
under-
P4F41BM01
P4F41BM02
Copyright
by Fiat Auto
41
Bodywork
Marea Weekend
Where it is not possible to use a chamfering machine, use a special cutter w i t h an ordinary drill (it is also
possible to use an ordinary drill modified as shown in the diagram below.
Remove the rear wing taking care not to distort the internal frames.
P4F42BM03
P4F42BM04
// the removal of the wing is difficult, it is advisable to heat the sealant in the area of the wheel
arch or the foam in the upper part of the rear pillar using a hot air blower.
42
Print no.
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Marea Weekend
Bodywork
Introduction
7
Using a hammer and dolly block, straighten the edges on the vehicle.
P4F43BM01
Remove the excess parts from the replacement part so that the pillars of the replacement part are about 50 mm longer
than the part removed from the vehicle.
t
4
Position the replacement part on the vehicle and check the alignment w i t h the adjacent elements, then fix it using the special self-locking clamps;
after having made sure that it is perfectly
superimposed (pillars and underdoor),
makr the parts to be removed on the
bodyshell.
P4F43BM03
Copyright
by Fiat Auto
43
Bodywork
Marea Weekend
Introduction
1. Drill the replacement part where the rivets will be applied w i t h the continuous welding machine.
2. Grind the residues of the spot welding and strip all the internal and external surfaces in the areas to be
welded (avoid the paint in the box sections getting burnt and not adhering properly to the panels as
this will adversely affect the subsequent protection operations).
3. Apply electro-weldable anti-rust protection to the internal edges to be welded.
P4F44BM03
44
P4F44BM04
Print no.
506.763/01
Marea Weekend
Bodywork
Introduction
70.
Apply sealant between the wheel arch and the w i n g along the section shown in the diagram.
P4F45BM01
Position the replacement part on the vehicle, checking the alignment with the adjacent elements and
checking that it is perfectly aligned w i t h the components to be welded edge to edge.
P4F45BM02
Copyright
by Fiat Auto
45
Bodywork
Marea Weekend
Introduction
7
P4F46SWKB
P4F46BM01
P4F4RBM03
During the electrical spot welding, it is necessary for the panels to be welded to match perfectly
and be extremely clean in order to prevent excessive resistance which leads to burning and
consequent fragility of the weld.
P4F46BM04
46
Marea Weekend
Bodywork
Introduction
7
Using the continuous welding machine, weld the pillars and the underdoor panel, proceeding in
chain-stitch style in order not to distort the panels.
P4F47BM02
Copyright
by Fiat Auto
P4F47BM04
47
Bodywork
Marea Weekend
Introduction
70.
Finishing operations
Using a disc grinder, level the welds made on the pillars and the underdoor panel w i t h the continuous
welding machine.
P4F48BM01
out.
P4F48BM02
Protections
Refer to the instructions on pages 34 - 36.
48
Print no.
506.761/07
Bodywork
Marea
Introduction
R E A R W I N G AND W H E E L A R C H
(with luggage compartment
side
lining and lock barrel) (7090A 54)*
Replace
(*)
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, which could impede the repair operations or be damaged during them.
Removing wing
Cut the component to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
Copyright
by Fiat Auto
49
Bodywork
Marea
Introduction
7
Replacing wheel arch, luggage compartment side lining and lock barrel
(7090G72)*
(*)
The components for which the replacement procedure is given are highlighted
in the diagram at the side.
P4F60BM01
Removing wheel arch, luggage compartment side lining and lock barrel
Cut the components to be replaced and remove them from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
P4F50BM02
50
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Bodywork
Marea
Introduction
7
P4F51BM01
Preparing the wheel arch, luggage compartment side lining and lock barrel
1. Grind the internal and external edges.
2. Make equidistant holes in the front edge of the wheel arch.
3. Apply an electro-weldable anti-rust protective to the internal edges to be welded.
P4F51BM02
Copyright
by Fiat Auto
51
Bodywork
Marea
Introduction
7
P4F52BM01
Welding the wheel arch, luggage compartment side lining and lock barrel
1. Carry out the MIG welding to fill the holes made previously in the replacement part.
2. Carry out the electrical spot welding.
P4F62BM02
P4F52BM03
52
Bodywork
Marea
Introduction
P4F53BM02
53
Bodywork
Marea
Introduction
7
Make equidistant holes in the edges of the part as shown in the diagram.
Grind the internal and external edges.
Apply an electro-weldable anti-rust protective to the internal edges to be welded.
Using the spot welder, weld the fuel filler.
Reposition the replacement part on the vehicle and check that it is perfectly aligned w i t h the adjacent
elements.
P4F64BM01
P4F54BM02
54
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506.763/01
Bodywork
Marea
Finishing operations
Level the welds made using the MIG welder.
P4F55BM01
Protections
Refer to the instructions given previously on pages 34-36.
P4F55BM02
Copyright
by Fiat Auto
55
Bodywork
Marea-Marea Weekend
S I D E M E M B E R AND UNDERDOOR
R E I N F O R C E M E N T (7090G 62)*
Replacing
(*)
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, which could impede the repair operations or be damaged during them.
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Marea-Marea Weekend
Bodywork
Replacing body panels
7
Replacing underdoor
reinforcement (7090G 30)"
(*)
operation
manual.
P4F57BM02
Copyright
by Fiat Auto
57
Bodywork
Marea-Marea Weekend
34.
P4F58BM01
58
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Marea-Marea Weekend
Bodywork
Replacing body panels
7
P4F59BM01
P4F59BM02
Copyright
by Fiat Auto
59
Bodywork
Marea-Marea Weekend
P4F60BM01
60
Print no.
506.763/01
Bodywork
Marea-Marea Weekend
Make equidistant holes along the entire lower edge of the replacement part.
Grind the internal and external edges.
Apply an electro-weldable anti-rust protective to the internal edges to be welded.
Reposition the replacement part on the vehicle and check that it is perfectly aligned w i t h the adjacent
elements.
P4F61BM02
Copyright
by Fiat Auto
61
Bodywork
Marea-Marea Weekend
Finishing operations
Smooth the welds made using the MIG welder.
P4F62BM01
Protections
Refer to the previous description on pages 34-36.
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Marea-Marea Weekend
Bodywork
Replacing body panels
70.
I
Replacing
operation
manual.
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, w h i c h could impede the repair operations or be damaged during them.
Removing
Cut the component to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator t o adjust the position and the depth of the cutting so as not to damage the panels underneath.
Copyright
by Fiat Auto
63
Bodywork
Marea-Marea Weekend
P4F64BM02
64
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Marea-Marea Weekend
Bodywork
Replacing body panels
7
P4F65BM01
Copyright
by Fiat Auto
65
Bodywork
Marea-Marea Weekend
70.
Finishing operations
1. Smooth the brazing carried out at the corners of the roof.
2. Renew the sealant on the rib removed previously, then refit it on the bodyshell making sure that it adheres perfectly to the roof.
P4F66BM01
66
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506.763/01
Bodywork
Marea
REAR L I G H T C L U S T E R
HOUSING (7090G 86)*
Replacing
(*)
operation
manual.
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, which could impede the repair operations or be damaged during them.
Removing
Cut the component to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
Copyright
by Fiat Auto
67
Bodywork
Marea
P4F68BM01
68
Print no.
506.763/01
Bodywork
Marea
P4F69BM01
P4F69BM02
Copyright
by Fiat
Auto
69
Bodywork
Marea
Finishing operations
Smooth the welds made with the MIG welder.
Protections
Refer to the previous description on pages 34-36.
P4F70BM02
70
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506.763/01
Bodywork
Marea Weekend
REAR L I G H T C L U S T E R
HOUSING (7090G 86)*
Replacing
(*)
operation
manual.
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, w h i c h could impede the repair operations or be damaged during them.
Removing
Cut the component to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
P4F71BM02
Copyright
by Fiat
Auto
71
Bodywork
Marea Weekend
P4F72BM01
P4F72BM02
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Bodywork
Marea Weekend
P4F73BM01
Copyright
by Fiat Auto
73
Bodywork
Marea Weekend
_ _
Finishing operations
Smooth the welds made using the MIG welder.
74
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506.763/01
Bodywork
Marea
REAR C R O S S M E M B E R
LINING (7090A 46)*
Replacing
(*)
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, which could impede the repair operations or be damaged during them.
Removing
Cut the component to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
Copyright
by Fiat Auto
75
Bodywork
Marea
P4F76BM01
P4F76BM02
76
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Marea
Bodywork
Replacing body panels
7
P4F77BM01
Copyright
by Fiat Auto
11
Bodywork
Marea
P4F78BM01
78
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506.763/07
Bodywork
Marea Weekend
REAR C R O S S M E M B E R
LINING (7090A46)*
Replacing
operation
manual.
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, w h i c h could impede the repair operations or be damaged during them.
Removing
Cut the component to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
P4F79BM02
Copyright
by Fiat Auto
79
Bodywork
Marea Weekend
P4F80BM01
P4F80BM02
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Bodywork
Marea Weekend
P4F81BM02
Copyright
by Fiat Auto
81
Bodywork
Replacing body panels
7
Marea Weekend
Finishing operations
Smooth the welds made using the MIG welder.
P4F82BM0T
Protections
Refer t o t h e previous d e s c r i p t i o n o n pages 3 4 - 3 6 .
P4F82BM02
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Bodywork
Marea Weekend
PARTIAL REAR C R O S S
M E M B E R COVER (7090A 46)*
Replacing
(*)
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, which could impede the repair operations or be damaged during them.
Removing
Cut the component to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
P4F16CM02
Copyright
by Fiat Auto
VI-96 - Update
82/1
Bodywork
Marea Weekend
P4F16CM01
Make equidistant holes in the edges of the replacement part as shown in the diagram.
Grind the internal and external edges.
Apply an electro-weldable anti-rust protection to the internal edges to be welded.
Weld the hinge reinforcement on the side support using a spot welder.
P4F16CM02
82/2
V I - 9 6 - Update
Print no.
506.763/02
Bodywork
Marea Weekend
P4F17CM01
1. Position the side filler and check that it is perfectly aligned w i t h the adjacent elements.
2. Carry out electrical spot welding as shown in the diagram.
3. Carry out MIG welding to fill the holes made previously in the replacement part.
P4F17CM02
Copyright
by Fiat Auto
VI-96 - Update
82/3
Bodywork
Marea Weekend
P4F18CM01
Protections
Refer to the instructions given previously on pages 34-36.
P4F18CM02
82/4
VI-96 - Update
Print no.
506.763/02
Bodywork
Marea-Marea Weekend
R E A R FLOOR A N D
S I D E MEMBERS
Replacing
Removing
- Using a power saw, cut along the dotted lines illustrated below.
P4F83BM02
Copyright
by Fiat Auto
83
Bodywork
Marea-Marea Weekend
P4fSi4BM01
Remove the upper and lower spot welds on the side member.
Open the clip tab and remove the side member offcut.
Straighten the edges of the bodyshell.
Remove the weld residues.
P4F84BM02
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Marea-Marea Weekend
Bodywork
Replacing body panels
7
P4F85BM01
Copyright
by Fiat Auto
85
Bodywork
Marea-Marea Weekend
P4F86BM01
P4F86BM02
86
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Replacing body panels
7
P4F87BM01
P4F87BM02
Copyright
by Fiat Auto
87
Bodywork
Marea-Marea Weekend
P4F88BM01
P4F88BM02
88
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Replacing body panels
7
P4FS9BM01
P4F89BM02
Copyright
by Fiat Auto
89
Bodywork
Marea-Marea Weekend
70.
Finishing operations
Remove and level the weld residues.
P4F90BM01
Proceed w i t h fitting the rear cross member (see:: "Rear Cross Member")
Protections
Refer to the previous description on pages 34-36.
90
Print no.
506.763/01
Bodywork
Marea-Marea Weekend
FRONT C R O S S M E M B E R AND
LINING (7090G 07)*
Replacing
(*)
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, which could impede the repair operations or be damaged during them.
Removing
Cut the component to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
P4F91BM02
Copyright
by Fiat Auto
91
Bodywork
Marea-Marea
Weekend
P4F92BM02
92
Bodywork
Marea-Marea Weekend
R e p l a c i n g body p a n e l s
7
P4F93BM01
P4F93BM02
Copyright
by Fiat Auto
93
Bodywork
Marea-Marea Weekend
P4F94BM01
Protections
Refer to the previous description on pages 3 4 - 3 6 .
94
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Replacing body panels
7
C O M P L E T E FRONT
PANEL (7090G 10)*
Replacing
(*)
operation
manual.
P4F95BM01
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, w h i c h could impede the repair operations or be damaged during them.
Removing
Cut the component to be replaced and remove it from the vehicle, also remove the brackets inside the
engine compartment removing the spot welds using a drill.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
Copyright
by Fiat Auto
95
Bodywork
Marea-Marea Weekend
P4F96BM02
96
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Replacing body panels
P4F97BM01
Copyright
by Fiat Auto
97
Bodywork
Marea-Marea Weekend
P4F98BM01
P4F98BM02
98
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Replacing body panels
70.
Welding the outer panel
Carry out electrical spot welding as shown in the diagram.
P4F99BM01
Copyright
by Fiat Auto
99
Bodywork
Marea-Marea Weekend
P4F00CM01
Protections
Refer to the previous description on pages 34-36.
4F0DCM
100
Print no.
506.763/01
Bodywork
Marea-Marea Weekend
Replacing
P4F29BM04
Preliminary dismantling
- Remove the front cross member (see: "Replacing body panels - Front cross member)
Removing
- Cut the part to be replaced and remove it from the vehicle.
Copyright
by Fiat Auto
101
Bodywork
Marea-Marea Weekend
P4F02CM01
P4F02CM02
4F02CM
102
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Replacing body panels
70.
2. Remove the part previously marked with the cutting line (1) from the bodyshell, taking care not to
damage the inner reinforcement.
3. Remove the reinforcement part previously marked w i t h the cutting line (2) from the replacement part.
P4F03CM02
4F03CM
103
Bodywork
Marea-Marea Weekend
P4F04CM01
P4F04CM02
4F04CM
104
Print no.
506.763/01
Bodywork
Marea-Marea Weekend
Finishing operations
Remove and level the weld residues.
P4F05CM02
Proceed with fitting the front cross member (see: "Front cross member")
Protections
Refer to the previous description on pages 34-36.
Copyright
by Fiat Auto
105
Bodywork
Marea-Marea Weekend
FRONT PILLAR
(7090G 30)*
Replacing
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, which could impede the repair operations or be damaged during them.
Removing
Cut the component to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
106
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Replacing body panels
7
P4F07CM01
P4F07CM02
4F07CM
Copyright
by Fiat Auto
107
Bodywork
Marea-Marea Weekend
Preparing the replacement parts and checking the correct positioning on the bodyshell
1.
2.
3.
4.
5.
Drill the replacement part at the points where the MIG welder will be used.
Grind the internal and external edges.
Apply an electro-weldale anti-rust protective to the edges to be welded.
Position the replacement part on the vehicle and check the alignment with the adjacent elements.
Fit the hinges and the front door and check the alignment.
108
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Replacing body panels
7
Finishing operations
1. Smooth the welds made using the MIG welder.
P4F09CM01
Protections
1. Refer to the previous description on pages 34-36.
4F09CM
Copyright
by Fiat Auto
109
Bodywork
Marea-Marea Weekend
Replacing
(*)
Preliminary dismantling
Remove the moving parts of the bodywork and interior fittings, w h i c h could impede the repair opera
tions or be damaged during them.
Removing
Cut the component to be replaced and remove it from the vehicle.
The most important sections of the body panel are shown in order to allow the operator to adjust the position and the depth of the cutting so as not to damage the panels underneath.
110
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Replacing body panels
7
P4F11CM01
P4F11CM02
4F11CM
Copyright
by Fiat Auto
111
Bodywork
Marea-Marea Weekend
P4F12CM01
P4F12CM02
Rln
ZSSm
Before the final welding, check that the door housing measurements
d page 25).
ar)
4F12CM
112
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Replacing body panels
7
Finishing operations
Smooth the welds made using the MIG welder.
Protections
Refer to the previous description on pages 34-36.
P4F13CM01
4F13CM
Copyright
by Fiat
Auto
113
Marea-Marea Weekend
Bodywork
Index
7
FRONTDOOR
- Removing-refitting door
- Adjustments
- General view of removing front door
- RGmoving-refitting door panel and protective
cover
- Removing-refitting outer door handle
- Replacing door lock barrel
- Removing-refitting door lock
- Removing-refitting door opening lever
- Removing-refitting lowering w i n d o w glass
- Removing-refitting w i n d o w opening device
- Removing-refitting external rear view mirror
(electrical)
- Removing-refitting external rear view mirror
(manual)
- Removing-refitting external rear view mirror
(manual)
- Removing-refitting door seal
- Removing-refitting door rear pillar trim
R E A R DOOR
- Removing-refitting
protective cover
- Removing-refitting
- Removing-refitting
- Removing-refitting
device
- Removing-refitting
device
page
page
BUMPERS
- Removing-refitting front bumper
- Removing-refitting rear bumper (Marea)
- Removing-refitting folding rear bumper
(Marea Weekend)
- Removing-refitting folding rear bumper outer
cover (Marea Weekend)
- Removing-refitting side rear bumper (Marea
Weekend)
R E A R T A I L G A T E (Marea Weekend)
1
2
3
3
4
5
5
6
7
8
8
9
9
10
10
11
12
12
13
13
BONNET LID
- Removing-refitting bonnet lid
- Adjustments
- Removing-refitting bonnet lid release cable
- Removing-refitting engine compartment lock
striker
- Removing-refitting windscreen washer pipes
- Removing-refitting front grille
19
19
19
B O O T L I D (Marea)
- Removing-refitting boot lid
- Adjustments
- Removing-refitting boot lid lock
- Replacing lock barrel
- Removing-refitting bonnet lid release cable
- Removing-refitting rear number plate holder
20
21
22
22
23
26
17
17
18
29
30
31
32
32
33
33
35
35
SEATS
- Removing-refitting front seat
- Dismantling-reassembling front seat
- Removing-refitting rear seat (Marea)
- Removing-refitting rear seat (Marea Weekend)
INTERIOR FITTINGS
- Removing-refitting sun visors
- Removing-refitting front pillar cover
- Removing-refitting front/rear passenger grab
handles
- Removing-refitting roof lining front fixing
covers
- Removing-refitting centre pillar cover
- Removing-refitting rear parcel shelf (Marea)
- Removing-refitting rear pillar cover
(Marea)
- Removing-refitting luggage compartment side
lining (Marea Weekend)
- Removing-refitting upper luggage compartment covering (Marea Weekend)
- Removing-refitting luggage compartment pillars cover (Marea Weekend)
- Removing-refitting rear seat side cover (Marea
Weekend)
- Removing-refitting roof lining (Marea)
- Removing-refitting roof lining (Marea Weekend)
- General view of dashboard
- Removing-refitting dashboard
- Removing-refitting rear air vent
- Removing-refitting tunnel cover armrest
- Removing-refitting tunnel cover pocket
- Removing-refitting front seat belts
- Removing-refitting rear seat belts (Marea)
- Removing-refitting rear seat belts (Marea
Weekend)
36
37
40
41
42
42
42
42
43
44
44
45
45
46
46
47
50
51
53
60
60
60
61
62
62
Cont' w
Copyright
by Fiat
Auto
Bodywork
Marea-Marea Weekend
Index
7
page
Mechanical seat belt pre-tensioners
62/1
EXTERIOR FITTINGS
- Removing-refitting exterior side rubbing
strips
- Removing-refitting side trims on roof panel
(Marea)
- Removing-refitting side trims on roof panel
(Marea Weekend)
- Removing-refitting roof rail (Marea Weekend)
SUN ROOF
- Introduction
- Removing-refitting complete roof
- Dismantling-reassembling complete
roof
- Adjustments during refitting
63
65
66
67
69
72
sun
73
74
WINDOW GLASSES
- Stuck w i n d o w glasses
- Tools
- Replacing front w i n d o w glass ( w i n d screen)
- Replacing rear w i n d o w glass (rearscreen)
(Marea)
- Replacing rear w i n d o w glass (rearscreen)
(Marea Weekend)
- Replacing rear fixed side w i n d o w glass
(Marea Weekend)
75
75
79
83
85
87
V I I - 9 6 - Cancels a n d replaces
Print no.
506.763/02
Bodywork
Marea-Marea Weekend
Bumpers
70.
REMOVING-REFITTING
FRONT BUMPER
1. Raise the bonnet lid, then undo the upper
bolts fixing the bumpers to the front cross
member cover.
2. Undo the bolts fixing the front wheel arch
liner.
3. Using tool 1878077000, remove the button fixing and extract the front wheel arch
liner.
4. Undo the bolts fixing the bumpers to the
front w i n g .
5. Remove the front bumper from the
bodyshell, undoing the lower fixing bolts
shown by the arrows.
NOTE
Copyright
by Fiat
Auto
Bodywork
Marea
Bumpers
7
REMOVING-REFITTING
REAR BUMPER
1. Undo the bolts (A) fixing the bumpers to
the wheel arch liner.
Undo the bolt (B) fixing the bumpers to
the rear wing.
2. Remove the wheel arch liner, undoing the
fixing nuts,
3. R e m o v e t h e luggage compartment floor
covering (A).
U n d o t h e bolts fixing the rear luggage
compartment protection, then remove the
protection.
4 U n d o t h e fixing bolts and release the butt o n s for the luggage compartment side
lining, then remove it
Undo the bolt (A) fixing the bumper to the
bodyshell.
5. Undo the bolts fixing the bumpers to the
bodyshell, Remove the bumpers.
IMOTE
P4F024M04
Print no.
506.763/Of
Marea Weekend
Bodywork
Bumpers
7
R E M O V I N G - R E F I T T I N G REAR
FOLDING B U M P E R
1. Acting on the button ( A ) , lower the
bumper.
- Undo the bolts shown fixing the hinges
and remove the folding rear bumper.
Adjusting position of folding rear bumper
2. Loosen the bolts fixing the hinges, then
adjust the position of the folding rear
bumper.
IMOTE
REMOVING-REFITTING FOLDING
REAR B U M P E R OUTER C O V E R
3. Open the rear tailgate and undo the bolts
shown.
4. Undo the bolts shown and remove the
folding rear bumper outer cover.
P4F003M02
P4F003M03
Copyright
by Fiat Auto
P4F003M04
P4F004M02
Print no.
506.763/07
Bodywork
Marea-Marea Weekend
Front door
7
R E M O V I N G - R E F I T T I N G DOOR
NOTE
ADJUSTMENTS
NOTE
Copyright
by Fiat
Auto
Bodywork
Marea-Marea Weekend
Front door
7
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
Print no.
506.763/02
Bodywork
Marea-Marea Weekend
Front door
7
R E M O V I N G - R E F I T T I N G DOOR
AND P R O T E C T I V E C O V E R
PANEL
Copyright
by Fiat
Auto
Bodywork
Marea-Marea Weekend
Front door
7
REMOVING-REFITTING
HANDLE
OUTER
DOOR
NOTE
P4F03AM02
P4F03AM03
Print no.
506.763/01
Bodywork
Marea-Marea Weekend
Front door
7
R E M O V I N G - R E F I T T I N G DOOR
LOCK
Remove the outer handle for the door following the instructions on the previous page.
1 . Undo the bolts fixing the lock to the door
(A, B and C).
2. Remove the lock from the door disconnecting the connectors shown by the arrows and door opening control rod.
NOTE
R E M O V I N G - R E F I T T I N G DOOR OPENING
LEVER
Remove the door panel following the instructions given on the previous pages.
3.
NOTE
P4F04AM02
P4F04AM03
Copyright
by Fiat Auto
Bodywork
Marea-Marea Weekend
Front door
7
R E M O V I N G - R E F I T T I N G LOWERING
WINDOW G L A S S
- Remove the door panel and protective cover as described on the previous pages.
- Remove the external rear view mirror, as
described on the pages w h i c h follow.
- Remove the outer glass scraper trim.
1. Completely raise the w i n d o w .
Undo the bolts (A) then remove the rear
w i n d o w guide.
Undo the bolts (B) then remove the front
w i n d o w guide.
2. Release the w i n d o w from its fixing device.
R E M O V I N G - R E F I T T I N G WINDOW
OPENING D E V I C E
3. Release the w i n d o w from its device as described above, then undo the bolts fixing
the w i n d o w opening device to the door.
4. Extract the w i n d o w opening device from
its housing.
NOTE
10
Print no.
506.763/02
Marea-Marea Weekend
Bodywork
Front door
7
REMOVING-REFITTING EXTERNAL
REAR V I E W MIRROR (electric)
1. Gently remove the mirror fixing cover trim,
acting on the retaining tabs.
2. Disconnect the electrical connector ( A ) ,
then remove the trim.
3. Release the rubber protection ( A ) .
4. Undo the bolts fixing the mirror to the
bodyshell.
5. Remove the external rear view mirror c o m plete with plastic trim.
IMOTE
P4F011M04
Copyright
by Fiat Auto
11
Bodywork
Marea-Marea Weekend
Front door
7
REMOVING-REFITTING EXTERNAL
REARA V I E W MIRROR (manual)
1. Remove the rubber cover.
2. Undo the fixing ring nut.
3. Remove the fixing cover trim for the mirror, acting on the retaining tabs.
4. Undo the bolts fixing the mirror to the
bodyshell.
5. Remove the external rear view mirror complete w i t h plastic trim.
IMOTE
12
Print no.
506.763/01
Bodywork
Marea-Marea Weekend
Front door
1. Remove the external rear view mirror, f o l lowing the instructions on the previous
page.
2. Remove the door trim, starting from the
upper section (A), working towards the
lower section ( B ) .
NOTE
R E M O V I N G - R E F I T T I N G REAR DOOR
PILLAR T R I M
3. Working from outside the vehicle, partly
remove the finishing trim and the perimeter trim for the door w i n d o w housing.
4. Remove the door trim, undoing the fixing
bolts shown by the arrows.
IMOTE To refit simply reverse the order of
the operations carried out for the removal.
P4F07AM03
Copyright
by Fiat Auto
P4F07AM04
13
Bodywork
Marea-Marea Weekend
Rear door
7
R E M O V I N G - R E F I T T I N G DOOR
PANEL AND P R O T E C T I V E LINING
1878077000
P4F014M04
14
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Rear door
7
REMOVING-REFITTING LOWERING
WINDOW G L A S S
Remove the door panel and protective cover,
following the instructions on the previous
page.
Remove the fixed w i n d o w glass, as described
above.
3. Release the w i n d o w from its device (the
diagram shows the version with manually
operated windows; the version w i t h electric w i n d o w s is the same).
4. Undo the fixing bolt shown and extract
the w i n d o w guide.
P4F015M02
P4F015M03
Copyright
by Fiat Auto
15
Bodywork
Marea-Marea Weekend
Rear door
7
REMOVING-REFITTING MANUALLY
O P E R A T E D WINDOW OPENING D E V I C E
- Remove the w i n d o w from the w i n d o w
opening device, following the instructions
given previously, then undo the fixing nuts
shown by the arrows and extract the w i n d o w opening device.
NOTE
REMOVING-REFITTING ELECTRICALLY
O P E R A T E D WINDOW OPENING D E V I C E
- Remove the w i n d o w from the electrically
operated w i n d o w opening device, following the instructions given previously, then
undo the fixing nuts shown by the arrows
and extract the w i n d o w opening device.
NOTE
16
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Bonnet lid
7
R E M O V I N G - R E F I T T I N G BONNET
LID
ADJUSTMENTS
Adjusting position of
bonnet lid
3. Loosen the bolts fixing the bonnet lid,
then adjust its position.
NOTE
A d j u s t i n g bonnet lid
closing device
4. Working as illustrated in the diagram, adjust the vertical position of the bonnet lid;
it is possible to carry out the same adjustment by rotating the rubber mountings at
the edge of the engine compartment.
NOTE
P4F017M02
Copyright
by Fiat Auto
17
Bodywork
Marea-Marea Weekend
Bonnet lid
7
REMOVING-REFITTING
OPENING C A B L E
BONNET
LID
A
NOTE
P4F018M04
18
Print no.
506.763/01
Matea-Marea Weekend
Bodywork
Bonnet lid
7
R E M O V I N G - R E F I T T I N G B O N N E T LID
LOCK S T R I K E R
REMOVING-REFITTING WINDSCREEN
WASHER PIPES
2. Using tool 1878077000, remove the fixing buttons and remove the bonnet lid
sound-proofing lining.
3. Remove the windscreen washer pipes, releasing them from the bonnet lid after having removed the bands and disconnected
them from the jets.
NOTE
REMOVING-REFITTING FRONT
GRILLE
4. Raise the bonnet lid, then remove the
front grille undoing the fixing nuts shown
in the diagram;.
NOTE
P4F019M03
Copyright
by Fiat Auto
19
Bodywork
Marea
Boot lid
7
R E M O V I N G - R E F I T T I N G BOOT LID
- Using a screwdriver, remove the rear no.
plate lights.
Si
IA
P4F020M02
P4F020M03
20
Print no.
506.763/01
Bodywork
Marea
Boot lid
7
ADJUSTMENTS
Adjusting position of boot lid buffers
- Rotate the rubber buffers at the end of the
boot lid.
*
Copyright
by Fiat Auto
21
Bodywork
Marea
Boot lid
7
R E M O V I N G - R E F I T T I N G BOOT LID
LOCK
1. Open the boot lid and undo the bolts fixing the lock shown by the arrows.
2. Remove the lock releasing the rod joined
with the lock barrel.
NOTE
R E P L A C I N G LOCK
BARREL
3. Loosen the fixing bolts shown, then remove the barrel from the lock, disconnecting the joining rod.
4. Insert the key in the barrel, lift up the retaining spring, shown by the arrow, then
extract the barrel and replace it.
NOTE
P4F022M02
22
Print no.
506.763/01
Bodywork
Marea
Boot lid
7
R E M O V I N G - R E F I T T I N G BOOT LID
OPENING C A B L E
P4FO23MOI
P4F023M03
Copyright
by Fiat
Auto
23
Bodywork
Marea
Boot lid
7
P4F024M04
24
Print no.
506.763/01
Bodywork
Marea
Boot lid
7
- Undo the fixing bolts and release the buttons for the luggage compartment left covering, then remove it.
- Working on the left hand side of the luggage compartment, lift up the floor covering (A) and release the cable from the three
bands ( B ) .
P4F026M03
Copyright
by Fiat
Auto
25
Bodywork
Marea
Boot lid
7
R E M O V I N G - R E F I T T I N G REAR
N U M B E R PLATE HOLDER
26
Print no.
506.763/01
Bodywork
Marea
Boot lid
7
If the number plate holder which has been removed is being reused:
- Using a suitable blade, cut and level the
sealant trying to reduce the thickness to a
minimum. It is not necessary to completely
remove the remaining sealant. Take care
not to damage the number plate holder.
If a new number plate holder is being used:
- Thoroughly clean the housing of the
sealant w i t h an air jet and degrease fully
with heptane.
- Apply the adhesion promoter (primer), using the pad which comes with the kit, to
the perimeter where the sealant is applied.
- Wait for 15 minutes before proceeding
with the operations in order to allow the
evaporation of the adhesion promoter
(primer) diluent.
Preparing the boot lid
- Using a suitable blade, cut and level the
sealant in the number plate holder housing
in the boot lid.
- Thoroughly clean and degrease the housing for the number plate holder in the boot
lid, using a wad of paper soaked in heptane.
P4F027M03
Copyright by Fiat
Auto
27
Bodywork
Marea
Boot lid
7
Refitting
- using a spray gun, apply the SP3 (SPECIAL
ENGINES)
silicon
sealant
or
(MASCHERPA) EMAX 160 or an equivalent product, to the number plate holder
contact surface, starting from the lower
part, as illustrated in the diagram;
IMOTE
Cut the plastic nozzle in order to apply the sealant so that the correct
amount of sealant as shown in the
inset comes out.
The number plate holder must be positioned within 5 minutes after applying the sealant.
28
Print no.
506.763/01
Marea Weekend
Bodywork
Rear tailgate
7
R E M O V I N G - R E F I T T I N G REAR T A I L G A T E
- Remove the interior fittings and the n u m ber plate holder lights, following the i n structions in the specific paragraphs.
- Disconnect the connector (A) for the
rearscreen washer pipe.
- Remove the protective outer casing ( B ) .
- Disconnect the connectors (C, D, E, F).
Where necessary, fix the cables and
connect them to a sensor in order to
facilitate the subsequent refitting inside the tailgate.
Working carefully, remove the cables from
the tailgate.
the
the
the
the
Copyright
by Fiat Auto
29
Bodywork
Marea Weekend
Rear tailgate
7
ADJUSTMENTS
Adjusting position of tailgate
- Remove the upper panel for the tailgate
working as described overleaf.
- Loosen the bolts fixing the hinges ( A ) .
P4F030M03
30
Print no.
506.763/01
Marea Weekend
Bodywork
Rear tailgate
7
REMOVING-REFITTING TAILGATE
INTERIOR F I T T I N G S
Lower panel
1. Open the rear tailgate and undo the bolts
shown.
- Using tool 1878077000, separate the panel for the tailgate from the retaining
springs.
Upper panel
2. Undo the bolts shown and move the upper panel slightly to one side.
3. Disconnect the connector from the 3rd
brake light, then remove the upper panel.
Copyright
by Fiat Auto
The bulbs for the 3rd brake light can not be replaced.
31
Bodywork
Marea Weekend
Rear tailgate
7
Side panels
- Undo the bolts shown.
- Using tool 1878077000, separate the side
panel from the retaining springs.
NOTE
R E M O V I N G - R E F I T T I N G REAR T A I L G A T E
LOCK I D L E R
- Remove the lower tailgate panel as described on the previous page.
- Remove the central locking motor (see
Group 55 - Electrical Equipment).
- Open the retainers (A) for the lock control
rods.
- Undo the bolt (B) and remove the idler.
- Release the seal (C) from its housing.
R E M O V I N G - R E F I T T I N G REAR T A I L G A T E
LOCKS
- Remove the lower panel for the tailgate as
described on the previous page.
- Open the retainer (A) for the lock control
rod involved in the removal.
- Undo the bolts (B) and remove the lock
with the rod.
P4F032M03
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Print no.
506.763/01
Bodywork
Marea Weekend
Rear tailgate
7
R E M O V I N G - R E F I T T I N G REAR
B U M P E R OPENING
IDLER M E C H A N I S M
1. Acting on the button ( A ) , lower the
bumper.
- Undo the bolts shown and remove the cover.
2. Disconnect the two rods ( A ) .
- Undo the nut (B) and extract the rear
bumper opening idler mechanism.
REMOVING-REFITTING FOLDING
REAR B U M E R LOCKS
- Remove the folding rear bumper as described on the previous page.
4. Undo the bolts shown and remove the
cover.
P4F033M02
Copyright
by Fiat Auto
33
Bodywork
Marea Weekend
Rear tailgate
7
34
Print no.
506.763/01
Bodywork
Marea Weekend
Rear tailgate
7
REMOVING-REFITTING NUMBER
PLATE L I G H T HOLDER AND LOCK
- Remove the idler for the rear rear tailgate
locks, following the instructions given on
the previous pages.
1. Undo the bolts fixing the number plate
light holder and lock.
2. Undo the outer bolts (A) and move the
number plate light holder and lock assembly slightly.
3. Disconnect the connectors (A) and remove the number plate light holder and
lock assembly.
N O T E To refit, simply reverse the order of
the operations carried out for the removal.
R E P L A C I N G REAR T A I L G A T E
LOCK B A R R E L
- Remove the number plate light holder and
lock assembly, following the instructions
given above.
4. Undo the bolts (A) and remove the lock
assembly.
Using a screwdriver, extract the spring (B)
and remove the lock barrel (C).
NOTE
P4F036M03
Copyright
by Fiat Auto
35
Bodywork
Marea-Marea Weekend
Seats
7
REMOVING-REFITTING
FRONT S E A T
Order of operations
- Place the seat in the "completely backwards" end of travel position, then undo
the bolts fixing the seat guides to the floor;
P4F036M01
P4FO36M03
36
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Seats
7
DISMANTLING-REASSEMBLING
FRONT S E A T
The seat is shown without the side
trims; they should be removed after
the adjustment lever and the seat belt
attachment system have been removed.
1. Remove the fixing cover for the vertical
seat adjustment lever, acting on the retaining tabs.
2. Remove the vertical seat adjustment lever
undoing the fixing bolts.
3. Remove the vertical seat adjustment unit
undoing the fixing bolts.
4. Remove the attachment system for the
seat belt undoing the fixing bolt.
5. Remove the backrest angle adjustment
knob after having removed the fixing cap.
P4F39AM03
P4F39AM04
Copyright
by Fiat Auto
P4F39AM05
37
Bodywork
Marea-Marea Weekend
Seats
7
P4F40AM07
P4F40AM08
P4F40AM05
38
IX 9 7 - Cancels a n d replaces
Marea-Marea Weekend
Bodywork
Seats
7
P4F41AM01
P4F41AM02
1. Lift up the head restraint, rotate the supports through 90 to allow the release of
the pin then remove the head restraint
from the backrest.
2. Remove the edge of the backrest covering
from the attachment system.
3. Disconnect the tensioning rods from the
seats.
4. Disconnect the hooks for the covering
from the backrest frame.
5. Remove the backrest covering and upholstering from the seat frame.
IMOTE To refit, suitably reverse the order of
the operations carried out for the removal.
P4F41AM03
P4F41AM04
Copyright
by Fiat Auto
P4F41AM05
39
Bodywork
Marea
Seats
70.
P4F040M04
P4F040M05
P4F040M06
R E M O V I N G - R E F I T T I N G FRONT
SEAT
- Undo the bolts fixing the cushion to the
bodyshell, then remove it from the vehicle.
- Undo the bolt (A) fixing the backrest, then
lift it upwards to release it from the retainers and remove it.
- To facilitate the removal of the backrest, after having undone the fixing bolt ( A ) , use a
lever on the side retainers (B).
IMOTE To refit, simply reverse the order of
the operations carried out for the removal.
P4F040M08
40
Print no.
506.763/07
Marea Weekend
Bodywork
Seats
7
REMOVING-REFITTING
REAR S E A T
1. Undo the bolt (A) and extract the left seat
releasing it from the pin ( B ) .
If necessary, loosen the pin bolt ( B ) .
- Proceed in the same way for the right seat,
undoing bolt (C) instead of ( A ) .
P4F041M03
Copyright
by Fiat Auto
P4F041 M04
41
Bodywork
Marea-Marea Weekend
Interior fittings
7
R E M O V I N G - R E F I T T I N G SUN
V I S O R S AND A T T A C H M E N T S
1. Loosen the fixing bolts shown and remove
the sun visors and attachment systems.
REMOVING-REFITTING
FRONT PILLAR C O V E R
2. Move the door seal by the pillar cover
aside.
- Using tool 1878077000, release the front
pillar cover from the retainers.
REMOVING-REFITTING
FRONT/REAR PASSENGER
GRAB HANDLES
3. Remove the fixing covers and undo the
bolts underneath, then remove the passenger grab handles.
REMOVING-REFITTING
ROOF LINING F I X I N G
FRONT C O V E R S
4. Using tool 1878077000, remove the covers.
P4F042M02
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Print no.
506.763/07
Marea-Marea Weekend
Bodywork
Interior fittings
7
P4F043M02
P4F043M04
Copyright
by Fiat Auto
43
Bodywork
Marea
Interior fittings
7
REMOVING-REFITTING
SHELF
REAR
PARCEL
REMOVING-REFITTING
REAR PILLAR C O V E R
- Remove the rear parcel shelf following the
instructions given above.
3. Undo the bolts for the rear pillar cover.
4. Move the door seal aside by the pillar cover, then remove the rear pillar cover, using
tool 1878077000.
NOTE
P4F044M03
44
Marea Weekend
Bodywork
Interior fittings
7
REMOVING-REFITTING SIDE
LUGGAGE COMPARTMENT COVERING
- Remove the luggage compartment covering cloth.
- Lower the moving rear bumper.
- Lower the rear seat backrest.
- Release the retainers and remove the cover
(A).
- Move the tailgate housing seal aside by the
luggage compartment cover.
Undo the bolts fixing the luggage compartment cover and remove it.
NOTE
REMOVING-REFITTING
UPPER
LUGGAGE C O M P A R T M E N T C O V E R I N G
- Using tool 1878077000, remove the upper
cover releasing it from the retaining
springs.
NOTE
Copyright
by Fiat Auto
45
Bodywork
Marea Weekend
Interior fittings
7
REMOVING-REFITTING LUGGAGE
C O M P A R T M E N T PILLAR C O V E R S
- Remove the rear speakers, as described in
the specific paragraph.
1 . Release the central plate with clothes
hook (A). Undo the bolt underneath and
remove the frame.
- Movethe door housing seal (B) by the pillar cover.
- Remove the cowling (C) and undo the nut
underneath fixing the seat belt idler.
2. Remove the trim ( A ) .
Undo the bolts shown and remove the
luggage compartment pillar cover.
IMOTE
R E M O V I N G - R E F I T T I N G REAR S E A T
S I D E COVER
- Fold over the rear seat and lower the backrest.
3. Undo the bolts (A) retaining the cover..
Remove the door housing seal by the cover.
4. Remove the fixing cover and undo the
bolt fixing the rear seat belt, then remove
the side cover for the rear seat.
IMOTE
46
Print no.
506.763/01
Bodywork
Marea
Interior fittings
7
R E M O V I N G - R E F I T T I N G ROOF LINING
Dismantling the vehicle
Remove the parts shown in the diagram; for the removal procedures, see.the specific paragraphs.
The parts are numbered in the dismantling order.
P4F047M01
1.
2.
3.
4.
5.
6.
7.
8.
9.
P4F25AM02
Copyright
by Fiat Auto
47
Bodywork
Marea
Interior fittings
7
in
P4F37AM02
48
Bodywork
Marea
Interior fittings
7
6 minutes
P4F37AM03
90
P4F38AM01
P4F38AM02
P4F38AM03
49
Bodywork
Marea Weekend
Interior fittings
7
R E M O V I N G - R E F I T T I N G T H E ROOF LINING
Dismantling the vehicle
Remove the parts shown in the diagram; for the removal procedures, see the specific paragraphs.
The parts are numbered in the dismantling order.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
P4F050MO2
P4F050M03
. Working in the area of the luggage compartment, remove the retainers for the roof lining, using tool
1878077000.
. Areas for applying adhesive to the roof lining.
For the procedures of removing and refitting the roof lining follow the instructions given for the Marea
(See previous pages). In this case too, the lining for the version w i t h a sun roof is not stuck to the
roof.
50
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Bodywork
Marea-Marea Weekend
Interior fittings
7
DASHBOARD
G E N E R A L VIEW Dismantling
P4F08AM01
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Speaker grille
Speaker
Dashboard cover
Steering column switch unit
Horn/air bag protection
Steering wheel
Half-casings
Glove compartment
Cover
Radio
Centre panel
Emergency switch
Switch unit
Trims
Copyright
by Fiat Auto
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
51
Bodywork
Marea-Marea Weekend
Interior fittings
7
GENERAL V I E W of Retainers
P4F09AM01
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Bodywork
Marea-Marea Weekend
Interior fittings
7
REMOVING-REFITTING
DASHBOARD
P4F10AM03
P4F10AM04
53
Bodywork
Marea-Marea Weekend
Interior fittings
7
P4F11AM01
P4F11AM03
54
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Interior fittings
7
P4F12AM01
<r
9 '
P4F12AM04
Copyright
by Fiat Auto
55
Bodywork
Marea-Marea Weekend
Interior fittings
7
1. Working from inside the glove compartment, release the closures (A) and remove
the cover.
2. Loosen the fixing bolts shown and gently
remove the glove compartment.
3. Disconnect the connector for the courtesy
light.
4. Undo the bolts fixing the right air vent,
then remove it.
5. Undo the bolt shown fixing the dashboard, right hand side.
P4F13AM03
P4F13AM04
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Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Interior fittings
7
P4F14AM02
1. Undo the bolt shown and remove the underdoor cover (running board) aside on
both sides of the vehicle.
2. Working appropriately, undo the bolt fixing the dashboard to the bodyshell on
both sides.
3. Working on the side shown, remove the
left and right speaker grilles.
4. Remove the left and right speakers, undoing the fixing bolts and disconnecting the
appropriate connectors.
5. Undo the dashoard fixing bolts in the right
and left speaker housings.
P4F14AM04
P4F14AM05
57
Bodywork
Marea-Marea Weekend
Interior fittings
7
P4F1BAM01
P4F15AM04
58
Marea-Marea Weekend
Bodywork
Interior fittings
7
P4F16AM03
Copyright
by Fiat Auto
59
Bodywork
Marea-Marea Weekend
Interior fittings
7
REMOVING-REFITTING
REAR AIR V E N T
1. Extract the rear ashtray.
2. Undo the bolts shown and remove the rear
air vent
P4F060M02
P4F060M03
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Print no.
506.763/01
Bodywork
Marea-Marea Weekend
Interior fittings
7
NOTE
REMOVING-REFITTING
BELTS
FRONT
SEAT
See:
for vehicles fitted with Air Bags: Group 55
- Air Bag and pre-tensioners.
for vehicles without Air Bags: Group 70 mechanically operated pre-tensioners.
P4F061 M04
Copyright
by Fiat Auto
61
Bodywork
Marea-Marea Weekend
Interior fittings
7
REMOVING-REFITTING
B E L T S (Marea)
REAR
SEAT
IMOTE
REMOVING-REFITTING
B E L T S (Marea Weekend)
REAR
SEAT
- Remove the luggage compartment side lining working as described in the specific
paragraph.
3. Remove the fixing cover shown, then undo the lower belt fixing bolt.
4. Remove the trim (A) and undo the seat
belt idler fixing nut (B) underneath.
- Undo the fixing bolt and remove the reel.
IMOTE
P4F062M02
P4F062M04
62
Print no.
506.763/01
Marea-Marea Weekend
Bodywork
Mechanical seat belt pre-tensioner
7
NOTE
conPY-
INTRODUCTION
PRE-TENSIONERS for seat belts are devices integrated in the reel which, in the case of a frontal impact,
recover the inevitable lengthening of the belts due to the action of the weight of the body of the person in
the seat, ensuring that they remain close to the backrest.
In effect, it is vital for the belt to remain as close as possible to the person's body in order to gradually absorb the kinetic energy which they assume during the impact.
The lengthening of the belt can be due to the following causes:
- delay in the operation of the inertia locking device;
- stretching of the belt fibres;
- wrapping of the belt around the reel (spooling effect);
- thick clothing which increases the distance between the belt and the chest.
OPERATION
The pre-tensioner fitted on the vehicle is equipped
with a special bracket (see pages which follow)
which has the task of activating the system.
This takes place because the end of the above
mentioned bracket acts on the pulley (14) overcoming the spring (12) loading and pushing the
pulley (14) tooth (13) in the direction of the arrow shown in the detail of the diagram, releasing
the oscillating mass (1) allowing it to act.
Sudden deceleration, caused by an impact causes the oscillating mass ( 1 ) to move forwards and
compresses the opposing spring ( 2 ) . If the deceleration is sufficiently rapid, the oscillating
mass engages in such a position that it releases
the gas generator (4) from its retaining system
(3) which moves downwards, throught the action of the thrust spring (5) and comes into contact with the striker (6) which engags the
charge.
This gives rise to the combustion of the pyrotechnic charge which activates the main
charge and the gases which develop in the
chamber (7) flow, through the appropriate port,
to the piston (8) causing the rapid movement
along the expansion chamber.
The metal rod (9), fixed at one end to the piston
and at the other to a pulley fitted on the actual axis
of the winding (10) for the belt (11) produces the
rotary movement required for the rewinding.
At the end of the operation the reel locks in the
maximum belt recall position on the body of the
occupant of the appropriate seat.
The locking of the seat belt is an indication that the pre-tensioner has been activated or of a malfunction of the reel. In
both cases the device must be replaced.
P4F101M01
by Fiat Auto
V l 1
"
9 6
" P
d a t e
62/1
Bodywork
Marea-Marea Weekend
REMOVING B R A C K E T
The removal of the brackets prevents the pyrotechnic device from being accidentally
activated.
This operation should be carried out each time a service operation which could cause the
device to be accidentally activated is carried out. The bracket should ALWAYS ONLY BE REFITTED with the pre-tensioner unit fitted on the vehicle in order to avoid personal injury to the
operators.
Break the protective collar (5) (guarantee
seal), undoing the fixing bolt (4) and remove
the bracket (3) (see also diagram below).
Undo the bolts (2) fixing the pre-tensioner
support to the bodyshell and remove the support assembly (6) and pre-tensioner (1) from
the pillar and separate the t w o components.
R E F I T T I N G S E A T B E L T WITH P R E - T E N SIONER
P4F102M01
NOTE
It should be remembered that the system is correctly set when the head of the bolt (4) breaks at
the correct point.
The bolt (4) and the bracket
(3) should
be replaced
each time the pre-tensioner
is
removed.
4F102M
62/2
VII-96 - Update
Print no.
506.763/02
Bodywork
Marea-Marea Weekend
remove
Copyright
by Fiat
Auto
VII-96 - Update
62/3
Bodywork
Marea-Marea Weekend
If as a result of exceptional
atmospheric conditions (flood, high tide,
etc.) the water and mud
reaches
such a height that it affects the device components, then the device
must be replaced.
Pre-tensioners
do nto require any
maintenance and should definintely
not be lubricated. Any
operations
modifying
its original
conditions
mean that it cannot be used.
Bodywork operations
G. Do not subject the area surrounding the
pre-tensioner ( 6 0 - 7 0 cm radius) to impact during bodywork repairs (for example the use of a hammer); if necessary, remove the complete pre-tensioner assembly.
If painting operations require the use of
lamps in the area surrounding the pre-tensioner or welding or brazing has to be carried out, the complete reel-pre-tensioner
assembly must be removed.
r= 6 0 + 7 0 cm
Ordering methods
Follow the same procedures already described for ordering Air Bag modules (see section 55 - Electrical
equipment).
NOTE
Pre-tensioners have bee specially designed to be fitted on every indvidual type and marque of
vehicle therefore they cannot be adapted, reused or fitted on other vehicles, only those for
which they were designed and produced. Any attempts to reuse, adapt or install
pre-tensioners
on a different type of vehicle could result in serious or fatal injuries to the occupants of the v ehicle in the case or either an accident or normal usage. After fitting the bracket, the pre-tensioner
can be activated if struck with sufficient force.
4F104M
62/4
V I I - 9 6 - Update
Print no.
506.763/02
Bodywork
Marea-Marea Weekend
REMOVING-REFITTING
ERS
PRE-TENSION-
P4F105M02
P4F105M03
Copyright
by Fiat Auto
VII-96 - Update
62/5
Bodywork
Marea-Marea Weekend
A TUTSICUREZZA
ILLU-
A pretensionatore montato,
rimontare una nuova staff a di armamento
con le relative viti a frattura prestabilita.
4F106M
62/6
VII-96 - Aggiorna
Stampato
506.761/02
Marea-Marea Weekend
Bodywork
Exterior fittings
7
REMOVING-REFITTING
S I D E RUBBING S T R I P S
1. The trims concerned are those illustrated
in the diagram.
Removing
2. Heat the panel near the trim to be replaced
to facilitate the removal of the double-sided tape from the bodyshell.
3. Working appropriately, using a plastic
spatula, gradually remove the rubbing
strip from the bodyshell; also remove the
residues of the double-sided tape.
Do not reuse rubbing
have been removed.
strips
which
Refitting
4. Thoroughly clean and degrease the area of
the bodyshell where the trim is fitted using
heptane.
P4F063M03
Copyright
by Fiat Auto
63
Bodywork
Marea-Marea Weekend
Exterior fittings
7
Check the alignment of the springs (A) fixing the trim with the openings in the
bodyshell.
Remove the protective film (B) from the
double-sided tape and position the fixing
springs (A) in the appropriate openings at
the same time assisting the adhesion of the
double-sided tape to the bodyshell,
through gentle pressure applied manually
along the entire trim.
It is absolutely forbidden to
the adhesive
surfaces
with
hands.
touch
your
P4F064M02
64
Print no.
506.763/01
Bodywork
Marea
Exterior fittings
7
Refitting
3. Thoroughly clean and degrease the housing of
the trim in the roof, using heptane, paying special attention to the areas where the d o u ble-sided tape will be stuck.
4. Check the condition of the protective film ( A )
on the double-sided tape on the replacement
trim.
The sticking should be carried out with
the temperature of the areas involved on
the roof and the upper trim at 18 C
(lower temperatures alter the polymerization of the adhesive with consequent
deterioration of the sticking).
5. Insert the trim is the housing starting from the
rear of the vehicle using the heated rear w i n d screen as a reference, removing the protective
film (A) from the double-sided tape just before
sticking.
Copyright
by Fiat Auto
65
Bodywork
Marea Weekend
Exterior fittings
7
4IA
Do not re-use
the trims
removed.
Refitting
3. Thoroughly clean and de-grease the
housing of the trim in the roof using heptane, paying special attention to the area
where the double-sided tape will be stuck.
4. Check the condition of the protective film
(A) on the double-sided tape on the replacement trim
The sticking of the double-sided
tape should be carried out with the
temperature of the areas of the roof
and trim involved above 18 C (lower temperatures alter the polymerization of the adhesive with consequent
deterioration of the sticking)
66
V I I - 9 6 - Cancels a n d replaces
Print no.
506.763/02
Bodywork
Marea Weekend
Exterior fittings
7
P4F067M02
R E M O V I N G - R E F I T T I N G ROOF
RAIL
- Remove the rear light cluster f o l l o w i n g the
instructions in Section 55 - Electrical
equipment.
- Remove the front and rear passenger grab
handles following the instructions in the
specific paragraph.
- Remove the luggage compartment pillar
cover, following the instructions in the
specific paragraph.
3. Remove the fixing cover and undo the
height adjustment nut for the front seat
belt.
4. Remove the bolt cover, then undo the bolt
fixing the pillar cover.
Move the door housing seal (A) aside by
the roof lining.
Copyright
by Fiat Auto
67
Bodywork
Marea Weekend
Exterior fittings
7
NOTE
68
Print no.
506.763/01
Bodywork
Marea-Marea Weekend
Sun roof
7
INTRODUCTION
Emergency manoeuvre
If the electrically operated device fails, the
sun roof can be operated manually, proceeding as follows:
- remove the caps and the bolts ( 2 ) ;
- extract the special key (3) from inside the
courtesy light;
- insert it in the special splining in the electric motor, then rotate and move the roof.
P4F31AM03
Copyright
by Fiat Auto
P4F31AM04
69
Bodywork
Marea
Sun roof
7
P4F32AM01
1.
2.
3.
4.
70
6.
7.
8.
9.
10.
11.
Print no.
506.763/01
Marea Weekend
Bodywork
Sun roof
7
P4F33AM01
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
1 2.
13.
71
Bodywork
Marea-Marea Weekend
Sun roof
7
R E M O V I N G - R E F I T T I N G C O M P L E T E ROOF
After dismantling the internal components (see previous pages), proceed with the removal of the c o m plete sun roof, following the instructions given below:
- disconnect the water drainage pipes ( 1 ) ;
- undo the centre bolt (2) and the nuts (3) on the frame front cross member; (3);
working from the side, remove the nuts (4) and the bolts ( 5 ) ;
P4F34AM01
IMOTE
72
The centre brackets (6) are connected to the roof rib (7); to remove the sun roof frame,
pletely disconnect them (see detail A).
Print no.
com-
506.763/07
Marea-Marea Weekend
Bodywork
Sun roof
7
D I S M A N T L I N G - R E A S S E M B L I N G C O M P L E T E SUN ROOF
To remove the sun roof, proceed as described below:
- Remove the w i n d o w (1) from the pullies (6) via the bolts (9). Remove the water collection duct ( 8 ) .
Remove the sun visor (2) releasing it from the guides (see detail A ) .
- Remove the electric motor (3).
- Remove the terminals (4) (water drainage) stuck w i t h Betaseal polyurethane type sealant.
- Undo the two end of travel bolts ( 5 ) .
- Extract the pullies (6) after having moved them into the end of travel position.
- Remove the Bowden drive cable (10).
- Remove the deflector (7).
P4F35AM01
The bolts (9) securing the glass are treated with special
adhesive.
After the equivalent of six travels for the actual bolt it is no longer effective. ONLY
TYPE OF BOLTS SHOULD BE USED.
NOTE
THESE
vehicle:
When refitting, lubricate the sliding parts with MOL YKOTE PG 30 L type grease or an equivalent product.
Copyright
by Fiat Auto
73
Bodywork
Marea-Marea Weekend
Sun roof
7
A D J U S T M E N T S DURING
REFITTING
1. position the rollers (1) for the pullies exactly at the start of the sliding duct ( 2 ) ,
before the reference shown by the arrow;
2. refit the electric motor with the reference
(A) by the micro-switch (3);
- lastly, refit the w i n d o w .
Adjusting the window
3. If necessary, adjust the alignment of the
w i n d o w w i t h the profile of the roof using
the slots in the frame (4).
Adjusting the spoiler
There are t w o slotted openings (shown by
the arrows) in the edges of the spoiler (5)
for fixing and alignment with the vehicle
profile.
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Window glasses
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BONDED W I N D O W S
Marea
P4F075M02
EQUIPMENT
To remove and refit the bonded windows, use the products and the equipment described below
Composition of bonding Kit
1.
2.
3.
4.
5.
6.
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Thermal knife
This consists of a piece of equipment w h i c h heats up a blade to facilitate cutting the sealant.
The temperature of the blade can be adjusted up to 700 C, but it is advisable to use the knife up to a
temperature of around 150 C in order to avoid burning the sealant and producing harmful fumes. The
knife is, however, fitted with a fume exhaust system.
Different shaped blades are available to adapt to different cutting conditions.
It is important that during the cutting the blade is always kept perfectly parallel to the w i n d o w to avoid
excessive force and the risk of possibly breaking the actual w i n d o w .
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1.
2.
3.
4.
5.
6.
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Supply socket
Knife casing
Temperature adjustment knob
Compressed air tap
On switch
Protective fuse
7.
8.
9.
10.
11.
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Vibrating knife
The vibrating knife is made up of special
shears and a set of vibrating blades w i t h a
number of electrically adjustable oscillations.
It can be used to cut polyurethane sealants.
It is important that during the cutting the
blade is always kept parallel to the w i n d o w
and the bodywork, to prevent the blade from
breaking.
The diagrams at the side and underneath illustrate several situations w h i c h recur when
cutting bonded w i n d o w s showing the type
of blade required.
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Wire
In order to cut the sealant using the
wire, it is necessary to use the tool
illustrated in the diagram.
1. Traction handle
2. Retaining tool
Repeat the operation for 30 cm sections, reducing the length at the corners of the w i n d o w so that the sealant is completely cut.
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1.
2.
3.
4.
5.
6.
7.
Pillar covers
Sun visors
Sun visor attachment
Courtesy light
Rear view mirror
Grab handle
Roof lining fixing trims
8.
9.
10.
11.
12.
13.
Door seals
Spacers
Windscreen wiper blades
Lower cover
Perimeter trim
Retaining mountings
Gently lower the lining under the roof without distorting it.
Protect the dashboard and the seats w i t h a suitable cloth or paper.
Press on the retaining mountings (13) and push them downwards.
Protect the perimeter of the windscreen housing w i t h adhesive tape.
The perimeter trim (12) for the window
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should always be
replaced.
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Refitting
- Fit the trim on the windscreen, avoiding
touching the area where the adhesion promoter (primer) has been applied w i t h your
hands.
- Carry out a test fitting to centre the w i n d screen perfectly and apply the reference
marks.
The sliding retaining mountings
(A)
located in the lower part
should
support the windscreen
upwards
and keep it aligned with the roof.
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- Using the special suction pads, place the windscreen in position immediately after applying the
sealant.
- Using suitable belts and shims, exert slight pressure on the w i n d o w so that the trim is correctly aligned
with the pillars.
Keep the w i n d o w under pressure for at least 1 hour. During this period it is possible to spray water over
the w i n d o w to identify any penetration points and accelerate the polymerization of the sealant.
Any excess sealant on the inside of the pillars can be removed when the sealant has hardened by cutting it with a blade and removing it with pliers.
Take care not to damage the serigraphed
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the
windscreen.
Bodywork
Marea
Window glasses
7
P4F26AM01
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IMOTE
IMOTE
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84
used,
check
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Marea Weekend
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R E P L A C I N G T H E REAR WINDOW G L A S S ( R E A R S C R E E N )
Dismantling and protecting the vehicle
Remove the parts shown in the diagram: see the specific paragraphs for the removal procedures.
The parts are numbered in order of dismantling.
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1. Lower panel
2. Upper panel
3. Side panel
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IM O T E
NOTE
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NOTE
NOTE
used,
check
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