ENGINE CONTROL

B B

G- W(W)
3 2C
R- W

G- W(W)
5 AM2 IG2 4 2G B- O

ST2 4 R
B- R

12 IE1 B- R
I10
G- W

R- W

B- O
IGNITION SW

B- R
5 2G

FROM POWER SOURCE SYSTEM (SEE PAGE 46)

3 1C 9 1G 11 1G 12 1G

2 2C

20A EFI1

15A IGN

20A A/F
5A EFI2
B- R

6 1E

30A 1 5 3 1 1 5 1 5
C/OPN RELAY

AM2

IG2 RELAY

A/F RELAY
EFI MAIN

10A EFI3
RELAY

2 1A 2 3 5 2 2 3 2 3
B- G

9 1F 3 1F 1 1C 1 1D 12 1D 4 1D 6 1C

2
B- W
G- R

B- R

B- R
L- B
100A MAIN1

F12
FUSIBLE A9 IA1
LINK
L- B(LG)

BLOCK
B- R

2 IB2 B- W

G- R

B- R

B- R
W- B

L- B

BATTERY

4
FUEL PUMP

M
F16

5
W- B

EA BK

2002 RAV4 (EWD466U)

56
 * 1 : SHIELDED

B B

G- W(W) G- W(W)

R- W R- W

B- W

B- O B- O

B- R
E2
B- R

B- R

B- R
AIR FUEL RATIO SENSOR

AIR FUEL RATIO SENSOR

2 1 2 1
B- R

(BANK 1 SENSOR 1)

(BANK 2 SENSOR 1)
3 4 3 4
C4 IF2
A7

A8

W- R
(* 1)

B
B- R(LG)

W- L
(*1)

16 A 14 D 23 D 5 D 13 D 22 D 4 D
+B AF1A+ AF1A- HAF1A AF2A+ AF2A- HAF2A

E4 E , E5 D , E6 C , E7 B , E8 A
ENGINE CONTROL MODULE

FC EVP1 E01 E02 E1 OX1B HT1B OX2B HT2B

3 A 6 D 21 E 31 E 17 D 11 D 3 D 15 C 14 C
G- R(W)

W- B

W- B

R- B

R- Y
(* 1)

(* 1)
BR

W
P

HEATED OXYGEN SENSOR

HEATED OXYGEN SENSOR

2 3 1 3 1
VSV (EVAP)

(BANK 1 SENSOR 2)

(BANK 2 SENSOR 2)
V3

8 IE1
B- R
1 2 4 2 4

B- W
H3

H4
G- R

B- R

B- R

B- R

G- R

B- R

B- R B- R B- R B- R
E4 E4
(*1)

(*1)

W- B
(* 1)

(* 1)
BR

BR

BR

W- B

W- B W- B

A A A A A A A
BR A

EB J6
JUNCTION CONNECTOR

2002 RAV4 (EWD466U)

57
ENGINE CONTROL

B B

G- W(W) W

R- W

B- W B- W B- W B- W
E2 E2 E2
B- O FROM POWER SOURCE SYSTEM (SEE PAGE 46)

10A

B- W

B- W

B- W

B- W
W
IG2
R- W

INJECTOR NO. 1

INJECTOR NO. 2

INJECTOR NO. 3

INJECTOR NO. 4
1 1 1 1
17 2E 2 2H 5 2M

C7 IF2 B- O

I6

I7

I8

I9
2 2 2 2
R- W(SB)

G- W(W)

B- O(W)

B- R

R
B
1 A 8 A 2 A 1 E 2 E 3 E 4 E
BATT MREL IGSW # 10 # 20 # 30 # 40

E4 E , E5 D , E6 C , E7 B , E8 A
ENGINE CONTROL MODULE

CCV RSD TBP KNK1 EOM VG E2G THA THW E2

2 C 18 E 3 C 27 E 22 A 12 D 21 D 23 E 22 E 18 D
BR(W)

R- W
G- O

L- W
Y- G

B- L

BR
W
L

7 IE2
3 IE1
G- O

MASS AIR FLOW METER

(W)
VSV (CANISTER CLOSED VALVE)

(* 1)

BR
W
CONTROL VALVE

ENGINE COOLANT

1 1 3 IB2 3 2 4 2
TEMP. SENSOR
IDLE SPEED

DUTY 5 1D VG E2G THA

G- O

1
SHORT PIN

+B GND +B E2
I1

M1

1 1
E2

2 2 3 1 5 1
SWITCHING VALVE)

KNOCK SENSOR
VSV (PRESSURE
V2

2
W- B
B- R

B- R

B- R

BR

BR
K1

2 2 1D
V5
B- R

I2
B- R B- R B- R BR BR
E4 E4 I2 I2

BR
4 IB2
B- R

8 (*1) (*1)
B- R(W)
BR

BR
B

IE2
W- B (*1) (*1)

A A A A A

J6
JUNCTION CONNECTOR

2002 RAV4 (EWD466U)

58
 B

BR
BR

(*1)
(*1)
VTA
3
L- R

24 E
TO CLUTCH START

VTA
B- Y
SW (M/T)
TO PARK/NEUTRAL
POSITION SW (A/T)

2
E2
1
VC
BR Y Y

2 D

I2
I2
VC
C8
ST RELAY

2
1
T1 B- Y(W) B- Y B

1
1

Y
20 B
IF2

BR
E5

NSW
THROTTLE POSITION (A/T) (A/T)
SENSOR

3
5
B

2
3
1
1

IE2
IE2
B- W

BR
1
2

Y(W)
1
1

10
IB2
5A ST
B- R

C10
B- R(W) B- R

7 A

BR
IF2

STA

1
3
Y Y(W)

E2
11 IB2

VCC
R- Y(W)

V4
TO PASSENGER SIDE

15 B
J/B ECU

ACMG

2
87

107

SENSOR
L- B L- B L- B

21 B

9 IB2
LG- B

PTNK
PTNK
(W) (W) TO ENGINE COOLANT TEMP. SW

17 C

ENGINE CONTROL MODULE

FAN
OR A/C SINGLE PRESSURE SW

J5

VAPOR PRESSURE
Y- G(W)

4 B
FROM A/C AMPLIFIER

AC1
(*1)

JUNCTION
CONNECTOR

2
1
Y

15 D
1
2

R- W R- W

G22+
E4 E , E5 D , E6 C , E7 B , E8 A
3 2H

5 ID1

2002 RAV4 (EWD466U)

C1 (P)
CAMSHAFT
POSITION SENSOR
10A

L P
STOP

24 D

I2
NE-
S8
STOP LIGHT SW

G- W
FROM POWER SOURCE SYSTEM (SEE PAGE 46)

(*1)

G
G- W G- W
15 A
5 2H
6 2H
8 ID1

STP

(W) (P)

2
1
R
16 D
NE+
2
1

C4 W
29 E
OCV-

CRANKSHAFT
POSITION SENSOR
C2
* 1 : SHIELDED

CAMSHAFT TIMING

1
P OIL CONTROL VALVE
11 C

W- R
PSW
19 E
OCV+

P2
W

BR
POWER STEERING
OIL PRESSURE SW

59
ENGINE CONTROL

FROM POWER SOURCE SYSTEM (SEE PAGE 46)

20A 7. 5A
DEF TAIL
SENSOR ASSEMBLY
CENTER AIRBAG

GSW2 5 2J
4

G(W)
C7

(*3)
SHORT CONNECTOR

1
L

FROM TAILLIGHT
S6 B , S7 A

(IDLE- UP)
DIODE
3
4 B 3 G(W)
2J
(* 2)

RELAY
2
4 A
1 2H
L(W)

P(SB)
74 7
J4 J4
JUNCTION JUNCTION
CONNECTOR CONNECTOR
44 6
P(SB)
L(W)

11 A 18 A
F/PS ELS

E4 E , E5 D , E6 C , E7 B , E8 A
ENGINE CONTROL MODULE

IGT1 IGT2 IGT3 IGT4 IGF TC SIL WFSE

10 E 11 E 12 E 13 E 25 E 5 B 4 A 17 A
P- B(W)

W(W)

P(W)
R

CONNECTOR
46 45 5

JUNCTION
R R
I2 I2 I2 J4
66 65 15
P- B(W)

W(W)

P(W)
G- B

L- B

G
R

R
B

13 7 15
CONNECTOR 3

TC SIL WSFE
DATA LINK

3 2 3 2 3 2 3 2
IGNITION COIL AND

IGNITION COIL AND

IGNITION COIL AND

IGNITION COIL AND

SG CG TAC BAT
D1

IGT IGF IGT IGF IGT IGF IGT IGF

IGNITER NO. 1

IGNITER NO. 2

IGNITER NO. 3

IGNITER NO. 4

5 4 9 16
W- B(W)

CONNECTOR
I2

I3

I4

I5

JUNCTION

52

10
BR BR(W) 4 14 BR(W)
J5

IE1
72
J4 B(W)
JUNCTION
CONNECTOR B(W)

9 2
W- B W- B(SB)
3C 3P

II

2002 RAV4 (EWD466U)

60
 W FROM POWER SOURCE SYSTEM (SEE PAGE 46)

10A GAUGE
10A ECU IG
7. 5A OBD
* 2 : W/ WIRELESS DOOR LOCK CONTROL
* 3 : W/O WIRELESS DOOR LOCK CONTROL

13 2L 28 2J 9 2J

R- L(SB)
B(W)

R- L
(W)
CRUISE CONTROL ECU

6 3Q

CONNECTOR
26

JUNCTION
B(W)

J5
46
OD IDLO 5 3B

CONNECTOR
42
14 13

JUNCTION
C20

B(W) 62
Y- B

R- L
J4
52

C13 IF2 C12 IF2

G- R(W)

G- R(W)
GR(W)

GR(W)
B(W)
Y- B
(W)

(W)

W
L

7 B 25 B 27 B 6 A 14 B 5 C 2 C 10 B 11 B 20 D
OD1 IDLO TACH W THWO
C12 A , C13 B , C14 C , C15 D

INDICATOR LAMP
E4 E , E5 D , E6 C , E7 B , E8 A

MALFUNCTION
ENGINE CONTROL MODULE

E04 E05 E03 SPD

COMBINATION METER

1 D 8 D 30 E 22 B
V- W(W)

88
J5
JUNCTION
CONNECTOR
78
V- W(W)

1 B 16 B 4 A 6 A
26 2J
W

W
W- B

W- B

W- B

6 2M 5 IB1 D6 IA1 D5 IA1

W

R- Y
L- B

(COMBINATION METER)

3 EA1 9 EA1
R- Y

R- L
L- B
BR

VEHICLE SPEED

B(W) 3 2
SENSOR

SI SE
B(W)
IG+
V1

1
R- L

9 10
EC IE 1D 1G

2002 RAV4 (EWD466U)

61
ENGINE CONTROL
SYSTEM OUTLINE
The engine control system utilizes a microcomputer and maintains overall control of the engine, transaxle etc. An outline of
the engine control is given here.
1. INPUT SIGNALS
(1) Engine coolant temp. signal circuit
The engine coolant temp. sensor detects the engine coolant temp. and has a built-in thermistor with a resistance, which
varies according to the engine coolant temp.. The engine coolant temp. which is input into TERMINAL THW of the
engine control module as a control signal.
(2) Intake air temp. signal circuit
The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp. which is input as a
control signal to TERMINAL THA of the engine control module.
(3) Oxygen density signal circuit
The oxygen density in the exhaust emission is detected by the heated oxygen sensors and input as a control signal to
TERMINALS OX1B and OX2B of the engine control module.
(4) RPM signal circuit
Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor.
Camshaft position is input as a control signal to TERMINAL G22+ of the engine control module, and engine RPM is
input into TERMINAL NE+.
(5) Throttle position 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.
(6) Vehicle speed circuit
The speed sensor (Combination meter) detects the vehicle speed and inputs a control signal to TERMINAL SPD of the
engine control module.
(7) Battery signal circuit
Voltage is constantly applied to TERMINAL BATT of the engine control module. With the ignition SW turned on, the
voltage for engine control module start-up power supply is applied to TERMINAL +B of the engine control module via
the EFI main relay.
(8) A/C SW signal circuit
The A/C amplifier inputs the A/C operations into TERMINAL AC1 of the engine control module.
(9) Stop light SW signal circuit
The stop light SW is used to detect whether the vehicle is braking or not and the signal is input into TERMINAL STP of
the engine control module as a control signal.
(10) Starter signal circuit
To confirm whether the engine is cranking, the voltage is applied to the starter motor during cranking is detected and the
signal is input into TERMINAL STA of the engine control module as a control signal.
(11) Engine knock signal circuit
Engine knocking is detected by knock sensor and the signal is input into TERMINAL KNK1 as a control signal.
(12) Air fuel ratio signal system
The air fuel ratio is detected and input as a control signal into TERMINALS AF1A+, AF2A+ of the engine control module.
(13) Fuel cut in a collision
The system receives the collision signal from center airbag sensor assembly in the vehicle has a collision and stops the
fuel pump operation on the side of the engine control module.

2002 RAV4 (EWD466U)

62
2. CONTROL SYSTEM
∗ SFI system
The SFI system monitors the engine condition through the signals input from each sensor to the engine control module.
And the control signal is output to TERMINALS #10, #20, #30, #40 of the engine control module to operate the injector
(Inject the fuel). The SFI system controls the fuel injection operation by the engine control module in response to the
driving conditions.
∗ ESA system
The ESA system monitors the engine condition through the signals input to the engine control module from each sensor.
The best ignition timing is decided according to this data and the memorized data in the engine control module and the
control signal is output to TERMINALS IGT1, IGT2, IGT3, IGT4. This signal controls the igniter to provide the best
ignition timing for the driving conditions.
∗ Heated oxygen sensor heater control system
The heated 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 heated oxygen sensors to improve detection performance of the sensors.
The engine control module evaluates the signals from each sensor, and outputs current to TERMINALS HT1B and
HT2B to control the heater.
∗ Idle speed control system
The idle speed control system (Rotary solenoid type) increases the RPM and provides idling stability for fast idle-up
when the engine is cold and when the idle speed has dropped due to electrical load, etc. The engine control module
evaluates the signals from each sensor, outputs current to TERMINAL RSD, and controls the idle speed control valve.
3. DIAGNOSIS SYSTEM
With the diagnosis system, when there is a malfunction in the engine control module signal system, the malfunctioning
system is recorded in the memory. The malfunctioning system can be found by reading the code displayed by the
malfunction indicator lamp.
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 memory or else stops the engine.

2002 RAV4 (EWD466U)

63
ENGINE CONTROL
SERVICE HINTS
E4 (E), E5 (D), E6 (C), E7 (B), E8 (A) ENGINE CONTROL MODULE
BATT-E1 : Always 9.0- 14.0 volts
VC-E2 : 4.5- 5.5 volts (Ignition SW at ON position)
VTA-E2 : 0.3- 1.0 volts (Ignition SW on and throttle valve fully closed)
3.2- 4.9 volts (Ignition SW on and throttle valve fully open)
VG-E2G : 1.1- 1.5 volts (Engine idling and A/C SW off)
THA-E2 : 0.5- 3.4 volts (Engine idling and intake air temp. 20°C, 68°F)
THW-E2 : 0.2- 1.0 volts (Engine idling and coolant temp. 80°C, 176°F)
IGF-E1 : 4.5- 5.5 volts (Ignition SW at ON position)
Pulse generation (Engine idling)
SIL-E1 : Pulse generation (During transmission)
TACH-E1 : Pulse generation (Engine idling)
STA-E1 : 6.0 volts or more (Engine cranking)
FC-E01 : 9.0- 14.0 volts (Ignition SW at ON position)
SPD-E1 : Pulse generation (Ignition SW on and rotate driving wheel slowly)
W-E01 : Below 3.0 volts (Ignition SW at ON position)
NSW-E1 : 9.0- 14.0 volts (Ignition SW on and other shift position in P or N position)
0- 3.0 volts (Ignition SW on and shift position in P or N position)
EVP1-E01 : 9.0- 14.0 volts (Ignition SW at ON position)
STP-E1 : 7.5- 14.0 volts (Ignition SW on and brake pedal depressed)
Below 1.5 volts (Ignition SW on and brake pedal released)
KNK1-E1 : Pulse generation (Engine idling)
PSW-E1 : 9.0- 14.0 volts (Ignition SW at ON position)
HAF1A-E04 : Below 3.0 volts (Engine idling)
IGSW-E1 : 9.0- 14.0 volts (Ignition SW at ON position)
MREL-E1 : 9.0- 14.0 volts (Ignition SW at ON position)
G22+, NE+ -NE- : Pulse generation (Engine idling)
OCV+ -OCV- : Pulse generation (Ignition SW at ON position)
HT1B, HT2B-E1 : 9.0- 14.0 volts (Engine idling)
Below 3.0 volts (Ignition SW at ON position)
AF1A+, AF2A+ -E1 : 3.3 volts (Ignition SW at ON position)
AF1A-, AF2A- -E1 : 3.0 volts (Ignition SW at ON position)
OX1B, OX2B-E1 : Pulse generation (Maintain engine speed at 2500 rpm for 90 sec. after warming up)
IGT1, IGT2, IGT3, IGT4-E1 : Pulse generation (Engine idling)
#10, #20, #30, #40-E01 : 9.0- 14.0 volts (Ignition SW at ON position)
Pulse generation (Engine idling)

: PARTS LOCATION
Code See Page Code See Page Code See Page
A7 30 E7 B 33 J4 33
A8 30 E8 A 33 J5 33
C1 30 F12 30 J6 33
C2 30 F16 34 K1 31
C4 30 H3 30 M1 31
C7 32 H4 30 P2 31
C12 A 32 I1 31 S6 B 33
C13 B 32 I2 31 S7 A 33
C14 C 32 I3 31 S8 33
C15 D 32 I4 31 T1 31
C20 32 I5 31 V1 31
D1 32 I6 31 V2 31
E2 30 I7 31 V3 31
E4 E 33 I8 31 V4 35
E5 D 33 I9 31 V5 35
E6 C 33 I10 33

2002 RAV4 (EWD466U)

64
 : RELAY BLOCKS

Code See Page Relay Blocks (Relay Block Location)

1 21 Engine Room R/B (Engine Compartment Left)
,,,
,,,
,,,
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

Code See Page Junction Block and Wire Harness (Connector Location)
1A
1C 22 Engine
g Wire and Engine
g Room J/B ((Engine
g Compartment Left))
1D
1E
1F 22 Engine
g Room Main Wire and Engine
g Room J/B (Engine
( g Compartment Left))
1G
2C
24 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
2E
2G
2H
2J 25 Instrument Panel Wire and Driver Side J/B (Lower
( Finish Panel))
2L
2M
3B 28 Engine Room Main Wire and Passenger Side J/B (Behind the Glove Box)
3C 28 Floor Wire and Passenger Side J/B (Behind the Glove Box)
3P
28 Instrument Panel Wire and Passenger Side J/B (Behind the Glove Box)
3Q

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 36 Engine Wire and Engine Room Main Wire (Under the Engine Room J/B)
IA1 38 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IB1
38 Instrument Panel Wire and Floor Wire (Left Kick Panel)
IB2
ID1 38 Instrument Panel Wire and Switch Wire (Near the Driver Side J/B)
IE1
40 Engine Wire and Instrument Panel Wire (Near the Passenger Side J/B)
IE2
IF2 40 Instrument Panel Wire and Engine Room Main Wire (Right Kick Panel)

: GROUND POINTS

Code See Page Ground Points Location

EA 36 Front Right Side of Fender Apron
EB 36 Intake Side of Cylinder Block
EC 36 Left Side of Cylinder Head
IE 38 Left Kick Panel
II 38 Right Kick Panel
BK 42 Left Rear Side of Quarter Panel

: SPLICE POINTS

Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
E2 E5 36 Engine Room Main Wire
36 Engine Wire
E4 I2 40 Engine Wire

2002 RAV4 (EWD466U)

65