ENGINE CONTROL (1MZ–FE)

SYSTEM OUTLINE
THIS SYSTEM UTILIZES AN ENGINE CONTROL MODULE (ENGINE AND ELECTRONIC CONTROLLED TRANSMISSION ECU) AND
MAINTAINS OVERALL CONTROL OF THE ENGINE, TRANSMISSION AND SO ON. AN OUTLINE OF THE ENGINE CONTROL IS
EXPLAINED HERE.

1. INPUT SIGNALS
(1) ENGINE COOLANT TEMP. (WATER TEMP.) SIGNAL CIRCUIT
THE ENGINE COOLANT TEMP. SENSOR (WATER TEMP. SENSOR) DETECTS THE ENGINE COOLANT TEMP. AND HAS A
BUILT–IN THERMISTOR WITH A RESISTANCE WHICH VARIES ACCORDING TO THE WATER TEMP. IS INPUT INTO TERMINAL
THW OF ENGINE CONTROL MODULE (ECU) AS A CONTROL SIGNAL.
(2) INTAKE AIR TEMP. SIGNAL CIRCUIT
THE INTAKE AIR TEMP. SENSOR IS INSTALLED IN THE MASS AIR FLOW (AIR FLOW METER) AND DETECTS THE INTAKE AIR
TEMP., WHICH IS INPUT AS A CONTROL SIGNAL TO TERMINAL THA OF ENGINE CONTROL MODULE (ECU).
(3) OXYGEN SENSOR SIGNAL SYSTEM
THE OXYGEN DENSITY IN THE EXHAUST GASES IS DETECTED AND INPUT AS A CONTROL SIGNAL TO TERMINAL OXL, OXR
AND OXS OF THE ENGINE CONTROL MODULE (ECU). TO MAINTAIN STABLE DETECTION PERFORMANCE BY THE OXYGEN
SENSOR, A HEATER IS USED FOR WARMING THE SENSOR. THE HEATER IS ALSO CONTROLLED BY THE ENGINE CONTROL
MODULE (ECU) (HTL, HTR AND HTS).
(4) RPM SIGNAL SYSTEM
CAMSHAFT POSITION AND CRANKSHAFT POSITION ARE DETECTED BY THE CAMSHAFT POSITION SENSOR AND
CRANKSHAFT POSITION SENSOR. CRANKSHAFT POSITION IS INPUT AS A CONTROL SIGNAL TO TERMINAL G22+ OF THE
ENGINE CONTROL MODULE (ECU), AND ENGINE RPM IS INPUT TO TERMINAL NE+.
(5) THROTTLE SIGNAL CIRCUIT
THE THROTTLE POSITION SENSOR DETECTS THE THROTTLE VALVE OPENING ANGLE AS A CONTROL SIGNAL, WHICH IS
INPUT INTO TERMINAL VTA OF THE ENGINE CONTROL MODULE (ECU). WHEN THE VALVE IS COMPLETELY CLOSED, THE
CONTROL SIGNAL IS INPUT INTO TERMINAL IDL.
(6) VEHICLE SPEED SIGNAL SYSTEM
THE VEHICLE SPEED SENSOR (SPEED SENSOR), INSTALLED INSIDE THE COMBINATION METER, DETECTS THE VEHICLE
SPEED AND INPUTS A CONTROL SIGNAL TO TERMINAL SP1 OF THE ENGINE CONTROL MODULE (ECU).
(7) PARK/NEUTRAL POSITION SW (NEUTRAL START SW) SIGNAL SYSTEM
THE PARK/NEUTRAL POSITION SW (NEUTRAL START SW) DETECTS WHETHER THE SHIFT POSITION IS IN NEUTRAL OR
PARKING OR NOT, AND INPUTS A CONTROL SIGNAL TO TERMINAL NSW OF THE ENGINE CONTROL MODULE (ECU).
(8) A/C SW SIGNAL SYSTEM
THE A/C AMPLIFIER INPUTS THE A/C OPERATIONS TO TEMRINAL A/C OF THE ENGINE CONTROL MODULE (ECU) AS A
CONTROL SIGNAL.
(9) BATTERY SIGNAL CIRCUIT
VOLTAGE IS CONSTANTLY APPLIED TO TERMINAL BATT OF THE ENGINE CONTROL MODULE (ECU). WHEN THE IGNITION SW
TURNED ON, VOLTAGE FOR ENGINE CONTROL MODULE (ECU) START–UP POWER SUPPLY IS APPLIED TO TERMINALS +B
AND +B1 OF ENGINE CONTROL MODULE (ECU) VIA EFI MAIN RELAY.
(10) INTAKE AIR VOLUME SIGNAL CIRCUIT
INTAKE AIR VOLUME IS DETECTED BY THE MASS AIR FLOW (AIR FLOW METER) AND THE SIGNAL IS INPUT TO TERMINAL VG
OF THE ENGINE CONTROL MODULE (ECU). AS A CONTROL SIGNAL.
(11) STA SIGNAL CIRCUIT
TO CONFIRM WHETHER THE ENGINE IS CRANKING, THE VOLTAGE APPLIED TO THE STARTER MOTOR DURING CRANKING IS
DETECTED AND THE SIGNAL IS INPUT INTO TERMINAL STA OF THE ENGINE CONTROL MODULE (ECU) AS A CONTROL
SIGNAL.
(12) ENGINE KNOCK SIGNAL CIRCUIT
ENGINE KNOCKING IS DETECTED BY THE KNOCK SENSOR NO. 1 AND NO. 2 AND THE SIGNALS ARE INPUT INTO TERMINALS
KNKR AND KNKL AS A CONTROL SIGNAL.

78
2. CONTROL SYSTEM
* SFI (SEQUENTIAL MULTIPORT FUEL INJECTION) (EFI (ELECTRONIC FUEL INJECTION) SYSTEM
THE EFI SYSTEM MONITORS THE ENGINE CONDITION THROUGH THE SIGNALS INPUT FROM EACH SENSOR (INPUT SIGNALS
FROM (1) TO (12) ETC.). THE BEST FUEL INJECTION VOLUME IS DECIDED BASED ON THIS DATA AND THE PROGRAM MEMORIZED
BY THE ENGINE CONTROL MODULE (ECU), AND THE CONTROL SIGNAL IS OUTPUT TO TERMINALS #10, #20, #30, #40, #50 AND #60
OF THE ENGINE CONTROL MODULE (ECU) TO OPERATE THE INJECTOR (INJECT THE FUEL). THE EFI SYSTEM PRODUCES
CONTROL OF FUEL INJECTION OPERATION BY THE ENGINE CONTROL MODULE (ECU) IN RESPONSE TO THE DRIVING
CONDITIONS.
* ESA (ELECTRONIC SPARK ADVANCE) SYSTEM
THE ESA SYSTEM MONITORS THE ENGINE CONDITION THROUGH THE SIGNALS INPUT TO THE ENGINE CONTROL MODULE (ECU)
FROM EACH SENSOR (INPUT SIGNALS FROM (1), (3), (4) TO (12) ETC.). THE BEST IGNITION TIMING IS DECIDED ACCORDING TO
THIS DATA AND THE MEMORIZED DATA IN THE ENGINE CONTROL MODULE (ECU) AND THE CONTROL SIGNAL IS OUTPUTS TO
TERMINALS IGT1, IGT2, IGT3, IGT4, IGT5 AND IGT6. THIS SIGNAL CONTROLS THE IGNITER TO PROVIDE THE BEST IGNITION
TIMING FOR THE DRIVING CONDITIONS.
* HEATED OXYGEN SENSOR (OXYGEN SENSOR) HEATER CONTROL SYSTEM
THE OXYGEN SENSOR HEATER CONTROL SYSTEM TURNS THE HEATER ON WHEN THE INTAKE AIR VOLUME IS LOW (TEMP. OF
EXHAUST EMISSIONS IS LOW), AND WARMS UP THE OXYGEN SENSOR (NO. 1 AND NO. 2) TO IMPROVE DETECTION
PERFORMANCE OF THE SENSOR.
THE ENGINE CONTROL MODULE (ECU) EVALUATES THE SIGNALS FROM EACH SENSOR (INPUT SIGNALS FROM (1), (4), (9) TO (10)
ETC.), AND OUTPUT CURRENT TO TERMINALS HTL, HTR AND HTS AND CONTROL THE HEATER.
* IAC (IDLE AIR CONTROL (ISC)) SYSTEM
THE IAC (ISC) SYSTEM (ROTARY SOLENOID TYPE) INCREASES THE RPM AND PROVIDES IDLE STABILITY FOR FAST IDLE–UP
WHEN THE ENGINE IS COLD, AND WHEN THE IDLE SPEED HAS DROPPED DUE TO ELECTRICAL LOAD AND SO ON, THE ENGINE
CONTROL MODULE (ECU) EVALUATES THE SIGNALS FROM EACH SENSOR (INPUT SIGNALS FROM (1), (4), (5), (8), (9) ETC.),
OUTPUTS CURRENT TO TERMINALS RSO AND RSC TO CONTROL IDLE AIR CONTROL VALVE.
* EGR CONTROL SYSTEM
THE EGR CONTROL SYSTEM DETECTS THE SIGNAL FROM EACH SENSOR (INPUT SIGNALS FROM (1), (4), (9), (10), ETC)., AND
OUTPUTS CURRENT TO TERMINAL EGR TO CONTROL THE EGR VALVE.
* ACIS (ACOUSTIC CONTROL INDUCTION SYSTEM)
ACIS INCLUDES A VALVE IN THE BULKHEAD SEPARATING THE SURGE TANK INTO TWO PARTS. THIS VALVE IS OPENED AND
CLOSED IN ACCORDANCE WITH THE DRIVING CONDITIONS TO CONTROL THE INTAKE MANIFOLD LENGTH IN TWO STAGES FOR
INCREASED ENGINE OUTPUT IN ALL RANGES FROM LOW TO HIGH SPEEDS.
THE ENGINE CONTROL MODULE (ECU) JUDGES THE ENGINE SPEED BY THE SIGNALS ((4), (5)) FROM EACH SENSOR AND
OUTPUTS SIGNALS TO THE TERMINAL ACIS TO CONTROL THE VSV (FOR OPENING AND CLOSING THE INTAKE CONTROL VALVE)

3. DIAGNOSIS SYSTEM
WITH THE DIAGNOSIS SYSTEM, WHEN THERE IS A MALFUNCTION IN THE ENGINE CONTROL MODULE (ECU) SIGNAL SYSTEM, THE
MALFUNCTIONING SYSTEM IS RECORDED IN THE MEMORY.

4. FAIL–SAFE SYSTEM
WHEN A MALFUNCTION HAS OCCURRED IN ANY SYSTEM, IF THERE IS A POSSIBILITY OF ENGINE TROUBLE BEING CAUSED BY
CONTINUED CONTROL BASED ON THE SIGNALS FROM THAT SYSTEM, THE FAIL–SAFE SYSTEM EITHER CONTROLS THE SYSTEM
BY USING DATA (STANDARD VALUES) RECORDED IN THE ENGINE CONTROL MODULE (ECU) MEMORY OR ELSE STOPS THE
ENGINE.

79
ENGINE CONTROL (1MZ–FE)
B–O

B–W

4 AM1 ST1 7 B–W B–W

L–B

B–O B–O
10 AM2 IG2 9 B–O

FROM POWER SOURCE

SYSTEM (SEE PAGE 64)
I12 8 1G 9 1D
W–R

IGNITION SW

B–O
W

7. 5A 10A
IGN STARTER
9 1G 1 2G

2
4
16 IP1
1
40A 30A 6 1A

B–W

B–W
AM1 AM2
B–O

B–O
20 3B 2 3C
1
I20
1 1E 2 2H

4
2 3D B–O B–O
B–O

IP1

B–W
W

6 6

L–B
9 IP1
3 EF1 3 2
B–O

15 IP3
W

CIRCUIT
OPENING
I18 RELAY
1 A
B

B–O

L–B
6 4 1
A , F16

B–O B–O B–O

100A ALT

FUSE BOX

E12 I18 E12 I18

6 6 6
F10

W–B

G–R

L–B

1 B
B–O

B–O

B–O

B–O

B–O

B–O

13 3A
16 IJ1
L–B
B

2 2 2 2 2 2 18 3C
INJECTOR NO. 1

INJECTOR NO. 6

INJECTOR NO. 3

INJECTOR NO. 4

INJECTOR NO. 5

INJECTOR NO. 2

W–B

B
4 BX1
11 1C
L–B
1 1 1 1 1 1
I4

I9

I6

I7

I8

I5

FL MAIN
2. 0L

1 1M
GR
W

Y
L

G–R
W–B

L
BATTERY
GR

IG

80
B–O B–O

B–W

B–W

L–B L–B

B–O B–O A A B–O B–O

FROM POWER SOURCE SYSTEM (SEE PAGE 64) A J6

JUNCTION
CONNECTOR

B–W

B–O
18 IP1
B–O B–O B–O
15A 15A 10A I18 E10 E12 E11
EFI TAIL MIR–
HTR
B–O

B–O

B–O

B–O

B–O

B–O
(FOR INTAKE AIR CONTROL)
(FOR FUEL PRESSURE UP)
ILDE AIR CONTROL VALVE
2 2D
14 1D 10 1A
2 1 1 1 1
G

(FOR A/C IDLE–UP)

1 3 6 1G
5 3D

(ISC VALVE)
EFI MAIN

(FOR EGR)
RELAY
B–O

5 1E 2 2 2 2

VSV

VSV

VSV

VSV
5 3C

V1

V2

V3

V4
2 5 1 3

I1
B–W

B–W
G

B–O
I18 3
2 2B 3 2C 4 2D
1 EF1
W–G
W–B
B–O

B–O

1 18 IP3
12 IP3
B–W

B–W

W–L
G–B

B–R
Y–B

R–Y
B–L
2 D6
DIODE
W–L

B–R

(FOR IDLE–UP)

14 D 21 D 14 A 13 A 23 A 22 A 1 C 12 C 25 A 6 C
BATT ELS NSW STA RSO RSC ACV EGR FPU ACIS
E7 A , E8 B ,E9 C , E10 D
ENGINE CONTROL MODULE
(ENGINE AND ELECTRONIC
CONTROLLED TRANSMISSION ECU)
+B +B1 # 20 # 50 # 40 # 30 # 60 # 10
23 D 22 D 9 A 6 A 7 A 8 A 5 A 10 A
B–O

B–O

GR

W
G
R
Y

L
B–O

11
B–O B–O
I23 IP1 I23
F15
FUEL PUMP
B–O

5
L–B L–B 4 5 W–B
M BX1
B–O

20
G–R G–R
IP1
Y

GR

W
W–B

W–B

EB BL

81
ENGINE CONTROL (1MZ–FE)
B–O B–O

B
E14 E14 E13
W–B
B–O

B–O

B–O

B–O

B–O
L–B L–B

B–O B–O B–O B–O

I18 I18 I18
BR
E12 E13 E13
BR

W–B
B–O

B–O

B–O

B–O

B–O

B–O

B–O

B–O

BR
1 1 1 BR
COIL NO. 2

COIL NO. 4

COIL NO. 6
(SHIELDED)
IGNITION

IGNITION

IGNITION
4 IQ1 5 IQ1

HEATED OXYGEN SENSOR

I17

I19

I21

1 1 1
2 2 2

W–B
B–O

B–O

B–O
B–O

BR

BR
BR
(BANK1 SENSOR2)

HEATED OXYGEN SENSOR

HEATED OXYGEN SENSOR

2 4 2 4 2 4
COIL NO. 1

COIL NO. 3

COIL NO. 5
IGNITION

IGNITION

IGNITION

+B E +B E +B E

(BANK1 SENSOR1)

(BANK2 SENSOR1)

(SHIELDED)
2 2 2
OX HT OX HT OX HT
I16

I18

I20
LG–B
B–O

L–B

GR

H9
G

(SHIELDED) 3 1 3 1 3 1

(SHIELDED)
1 B 2 B 3 B 4 B 5 B 6 B 7 B 8 B 7 A

H11

H12
+B COIL1 COIL2 COIL3 COIL4 COIL6 GND

L–B
P–B

W
COIL5 TACH B
I 2 A , I 15 B

(SHIELDED)
IGNITER R–L
IGF IGT1 IGT2 IGT3 IGT4 IGT5 IGT6

V–R
R–L
8 A 6 A 5 A 4 A 3 A 2 A 1 A 9 II1 10 II1 8 II1 R–L
(SHIELDED)

R–L B–O
I18 I18
B
GR–B
W–G
W–R

G–R
Y–R

R–B
L–B

P–B

W–B

R–L
L–B
W
12 A 24 A 16 A 15 A 26 A 30 A 29 A 26 D 25 D 13 B 11 C 19 B 10 C
IGF IGT1 IGT2 IGT3 IGT4 IGT5 IGT6 OXS HTS OXR HTR OXL HTL
E7 A ,E8 B ,E9 C , E10 D
ENGINE CONTROL MODULE(ENGINE AND ELECTRONIC
CONTROLLED TRANSMISSION ECU)
FC VG VG– THA E2 VC VTA IDL THG THW ACT A/C E01 E02 E03 KNKR
18 B 8 B 7 C 21 B 22 B 1 B 7 B 32 A 14 C 20 B 5 D 20 D 33 A 34 A 28 A 15 B
L–W

LG–R

B–Y
ENGINE COOLANT TEMP. SENSOR

I18
G–R

R–B

B–Y
L–R
L–B

BR
R

G–Y

G–B
(EFI WATER TEMP. SENSOR)

(SHIELDED)

W
L–W

A/C AMPLIFIER

A/C AMPLIFIER

4 3 2 2 2
FROM
TEMP. SENSOR

B–O
FROM COOLING

TO

3 EE1 1 EE1
EGR GAS

G–R
W–B

W–B

W–B
FAN ECU

E4
E1

(SHIELDED)

1 1
1 2 5 3
+B VG VG– THA
W

T1 1
THROTTLE
BR

BR

E2 POSITION
BR

SENSOR
KNOCK SENSOR 1

M6 1
4
MASS AIR FLOW
BR

(AIR FLOW METER) BR BR

I18 I18 I18
K1

ED

82
 (SHIELDED)
B

8 5

(SHIELDED)

(SHIELDED)

(SHIELDED)
W–B W–B
1C 1M
L–B BR

B–O BR BR

BR BR

BR BR

BR BR

(SHIELDED) FROM POWER SOURCE SYSTEM (SEE PAGE 64)

FROM POWER

JUNCTION CONNECTOR
SOURCE SYSTEM F BR
(SEE PAGE 64) I23
7 3D 3 3D

10A

(SHIELDED)

G–R
B–O

L–B

(CHECK ENGINE WARNING LIGHT)

F
BR

BR
GAUGE
B

MALFUNCTION INDICATOR LAMP

W–B

19 12 1 3 3 18 3D
7. 5A 6
IG– +B FP E1 E1 12 3D
OBD 1D

G–R
J1

D1

R–L
DATA LINK CONNECTOR 4 5

W–B
BR

BR

BR

BR

BR
1 (CHECK CONNECTOR)

A , C10 B
CG SG 3 B 6 1B

[COMB. METER]
TE1 TE2 OX1 OX2 D24

R–L
CONNECTOR

3 3D DATA LINK 2 IP3

8 2 4 15
DATA LINK

G–W CONNECTOR 3 C
2 (TDCL)
GR–B

CONNECTOR
BATT SDL

R–L
JUNCTION
B

R–L

C9
D3

16 2 6 A
1 IP1 C
B

2
R–L R–L

J2
W
G–W

IM1
19 IP1
B–O V5
VEHICLE SPEED
G–R

SENSOR
B–O

W–B (SPEED SENSOR) 1

5 C 11 D 28 D 3 C 1
TE1 TE2 SDL W 2 3
(FOR IGNITION
NOISE FILTER

LG
E7 A , E8 B ,E9 C , E10 D
P
SYSTEM)

ENGINE CONTROL MODULE(ENGINE AND ELECTRONIC 11 IP2 14 IP2

CONTROLLED TRANSMISSION ECU) 2
N1

KNKL G22+ G22– NE+ NE– E1 SP1 16 IP3

G–B

14 B 16 B 17 B 5 B 6 B 16 C 12 D
BR

J7 5 12
JUNCTION
B–W

COMBINATION
V–Y
BR
G
R
L

CONNECTOR
SPEED
W–B

W–B

(SHIELDED) A
METER

(SHIELDED) A
C8

4
A BR
(SHIELDED)

G
B

I18 I18
V–Y

BR

BR

BR

A A BR
A
A A

4 EE1 2 EE1 22 3D A BR
I18
A
A (SHIELDED)
(SHIELDED)

(SHIELDED)

(SHIELDED)

10 3D (SHIELDED)
B–W

E14
R
L

V–Y
W

BR

BR
CRANKSHAFT POSITION

1 1 1 BR
CAMSHAFT POSITION
KNOCK SENSOR 2

BR
W–B

W–B
BR

BR
SENSOR

SENSOR

2 2
K2

C17

C18

EC ED IE

83
ENGINE CONTROL (1MZ–FE)
SERVICE HINTS
CIRCUIT OPENING RELAY
2–1 : CLOSED WITH STARTER RUNNING OR MEASURING PLATE (VOLUME AIR FLOW (AIR FLOW METER)) OPEN
EFI MAIN RELAY
2–4 : CLOSED WITH IGNITION SW AT ON OR ST POSITION
E 4 ENGINE COOLANT TEMP. SENSOR (EFI WATER TEMP. SENSOR)
1–2 : 10.0 – 20.0 K (–20°C, –4°F)
: 4.0 – 7.0 K (0°C, 32°F)
: 2.0 – 3.0 K (20°C, 68°F)
: 0.9 – 1.3 K (40°C, 104°F)
: 0.4 – 0.7 K (60°C, 140°F)
: 0.2 – 0.4 K (80°C, 176°F)
E 7(A), E 8(B), E 9(C), E10(D) ENGINE CONTROL MODULE (ENGINE AND ELECTRONIC CONTROLLED
TRANSMISSION ECU)
VOLTAGE AT ENGINE CONTROL MODULE (ECU) WIRING CONNECTOR
BATT – E1 : ALWAYS 9.0–14.0 VOLTS
+B – E1 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
+B1 – E1 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
IDL – E1 : 9.0–14.0 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY OPEN)
0–3.0 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY CLOSED)
VC – E1 : ALWAYS 4.5–5.5 VOLTS (IGNITION SW AT ON POSITION)
VTA – E1 : 0.3–0.8 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY CLOSED)
3.2–4.9 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY OPEN)
VG – E1 : 4.0–5.5 VOLTS (IGNITION SW AT ON POSITION)
THA – E1 : 0.5–3.4 VOLTS (IGNITION SW ON AND INTAKE AIR TEMP. 20°C, 68°F)
THW – E1 : 0.2–1.0 VOLTS (ENGINE IDLING AND COOLANT TEMP. 80°C, 176°F)
#10, #20, #30, #40, #50, #60
– E01 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
PULSE GENERATION (ENGINE IDLING)
IGT1, IGT2, IGT3
IGT4, IGT5, IGT6 – E1 : PULSE GENERATION (ENGINE IDLING)
IGF – E1 : 4.5–5.5 VOLTS (IGNITION SW AT ON POSITION)
PULSE GENERATION (ENGINE IDLING)
G22+ – G– : PULSE GENERATION (ENGINE IDLING)
NE+ – G– : PULSE GENERATION (ENGINE IDLING)
RSC, RSO – E1 : PULSE GENERATION (ENGINE IDLING AND A/C OPERATION)
OXS, OXL, OXR – E1 : PULSE GENERATION (MAINTAIN ENGINE SPEED AT 2500 RPM FOR TWO MINUTES AFTER WARMING UP)
HTS, HTL, HTR – E01 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
0–3.0 VOLTS (ENGINE IDLING)
KNKL, KNLR – E1 : PULSE GENERATION (ENGINE IDLING)
NSW – E1 : 9.0–14.0 VOLTS (IGNITION SW ON AND OTHER SHIFT POSITION IN P OR N POSITION)
BELOW 3.0 VOLTS (IGNITION SW ON AND SHIFT POSITION IN P OR N POSITION)
SP1 – E1 : PULSE GENERATION (IGNITION SW ON AND ROTATE DRIVING WHEEL SLOWLY)
TE1 – E1 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
TE2 – E1 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
W – E1 : BELOW 3.0 VOLTS (MULFUNCTION INDICATOR LAMP ON)
9.0–14.0 VOLTS (MULFUNCTION INDICATOR LAMP OFF AND ENGINE RUNNING)
A/C – E1 : BELOW 1.5 VOLTS (ENGINE IDLING AND A/C SW ON)
7.5–14.0 VOLTS (A/C SW OFF)
ACT – E1 : 9.0–14.0 VOLTS (ENGINE IDLING AND A/C SW ON)
BELOW 1.5 VOLTS (A/C SW OFF)
ACIS – E01 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
STA – E1 : 6.0 VOLTS OR MORE (ENGINE CRANKING)
I 4, I 5, I 6, I 7, I 8, I 9 INJECTOR
1–2 : APPROX. 13.8 
T 1 THROTTLE POSITION SENSOR
3–1 : 0.2–5.7 K WITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0 MM (0 IN.)
2–1 : LESS THAN 2.3 K WITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0.5 MM (0.020 IN.)
WITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0.7 MM (0.0276 IN.)
3–1 : 2.0–10.2 K WITH THROTTLE VALVE FULLY OPEN

84
 : PARTS LOCATION
CODE SEE PAGE CODE SEE PAGE CODE SEE PAGE
C8 32 F16 B 28 I20 29
C9 A 32 H9 D 33 I21 29
C10 B 32 H11 28 J1 33
C17 28 H12 28 J2 33
C18 28 I1 29 J6 39
D1 28 I2 A 29 J7 33
D3 32 I4 28 K1 29
D6 32 I5 29 K2 29
D24 32 I6 29 M6 29
E1 28 I7 29 N1 29
E4 28 I8 29 T1 29
E7 A 32 I9 29 V1 29
E8 B 32 F15 B 29 V2 29
E9 C 32 I16 29 V3 29
E10 D 32 I17 29 V4 29
F10 A 28 I18 29 V5 29
F15 30 I19 29

: RELAY BLOCKS
CODE SEE PAGE RELAY BLOCKS (RELAY BLOCK LOCATION)
1 25 R/B NO. 1 (LEFT KICK PANEL)
6 26 R/B NO. 6 (BEHIND GLOVE BOX)

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

CODE SEE PAGE JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1A
1B
1C
1D 20 COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1E
1G
1M
2B 22 ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
2C
22 ENGINE WIRE AND J/B NO
NO. 2 (ENGINE COMPARTMENT LEFT)
2D
2G 22 COWL WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
2H 22 ENGINE WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
3A
3B
24 COWL WIRE AND J/B NO
NO. 3 (BEHIND COMBINATION METER)
3C
3D

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

CODE SEE PAGE JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EE1 40 (1MZ–FE) ENGINE WIRE AND SENSOR WIRE
EF1 38 (1MZ–FE) ENGINE WIRE AND COWL WIRE
II1 42 COWL WIRE AND INSTRUMENT PANEL WIRE
IJ1 42 FLOOR NO. 1 WIRE AND COWL WIRE
IM1 42 INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE
IP1
IP2 44 ENGINE WIRE AND COWL WIRE
IP3
IQ1 44 ENGINE WIRE AND INSTRUMENT PANEL WIRE
46 (S/D)
BX1 48 (C/P) FUEL GAUGE WIRE AND FLOOR NO. 1 WIRE
50 (W/G)

85
ENGINE CONTROL (1MZ–FE)
: GROUND POINTS
CODE SEE PAGE GROUND POINTS LOCATION
EB 38 (1MZ–FE) FRONT LEFT FENDER
EC 38 (1MZ–FE) INTAKE MANIFOLD RH
ED 38 (1MZ–FE) INTAKE MANIFOLD LH
IE 42 LEFT KICK PANEL
IG 42 INSTRUMENT PANEL BRACE LH
46 (S/D)
BL 48 (C/P) UNDER THE LEFT QUARTER PILLAR
50 (W/G)

: SPLICE POINTS
CODE SEE PAGE WIRE HARNESS WITH SPLICE POINTS CODE SEE PAGE WIRE HARNESS WITH SPLICE POINTS
E10 E14 38 (1MZ–FE)
ENGINE WIRE
E11 I18 44
38 (1MZ–FE)
(1MZ FE) ENGINE WIRE
E12 I20
44 COWL WIRE
E13 I23

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