1996 TOYOTA RAV4 ECU

15
ABBREVIATIONS D
ABBREVIATIONS
The following abbreviations are used in this manual.
ABS = Anti-Lock Brake System
A/C = Air Conditioning
A/T = Automatic Transaxle
COMB. = Combination
DIFF. = Differential
ECU = Electronic Control Unit
EGR = Exhaust Gas Recirculation
EVAP = Evaporative Emission
J/B = Junction Block
LH = Left-Hand
M/T = Manual Transaxle
O/D = Overdrive
R/B = Relay Block
RH = Right-Hand
SFI = Sequential Multiport Fuel Injection
SRS = Supplemental Restraint System
SW = Switch
TEMP. = Temperature
VSV = Vacuum Switching Valve
w/ = With
w/o = Without
2WD = Two Wheel Drive
4WD = Four Wheel Drive
* The titles given inside the components are the names of the terminals (terminal codes) and are not
treated as being abbreviations.

30
G ELECTRICAL WIRING ROUTING
Position of Parts in Instrument Panel
A 12 A/C Amplifier C 6 Cigarette Lighter Illumination
A 13 A/C Control SW C 7 Clock
A 14 A/C Thermistor C 8 Clutch Start SW
A 15 ABS Deceleration Sensor C 9 Combination Meter
A 16 ABS ECU C 10 Combination Meter
A 17 ABS ECU C 11 Combination Meter
A 18 Airbag Sensor Assembly C 12 Combination SW
A 19 Airbag Squib (Front Passenger Airbag Assembly) C 13 Combination SW
A 20 Airbag Squib (Steering Wheel Pad) C 14 Combination SW
C 15 Cruise Control Clutch SW
B 3 Blower Motor C 16 Cruise Control ECU
B 4 Blower Resisitor
B 5 Blower SW D 2 Data Link Connector 3
B 6 Buckle SW LH D 3 Defroster Mode SW
D 4 Diode (Engine Idle-Up)
C 4 Center Diff. Lock Control SW D 5 Door Lock Control Relay
C 5 Cigarette Lighter

31
G
Position of Parts in Instrument Panel
E 3 Electronically Controlled Transmission Pattern J 9 Junction Connector
Select SW J 10 Junction Connector
E 4 Engine Control Module J 11 Junction Connector
E 5 Engine Control Module
E 6 Engine Control Module K 2 Key Interlock Solenoid
F 8 Fuse Block O 4 O/D Main SW
H 4 Hazard SW P 2 Parking Brake SW
I 10 Ignition SW R 3 Radio and Player
R 4 Radio and Player
J 1 Junction Connector R 5 Rear Window Defogger SW
J 2 Junction Connector R 6 Remote Control Mirror SW
J 3 Junction Connector R 7 Rheostat
J 4 Junction Connector
J 5 Junction Connector S 4 Shift Lock ECU
J 6 Junction Connector S 5 Stop Light SW
J 7 Junction Connector
J 8 Junction Connector U 1 Unlock Warning SW

55
12
3
3
1
2210 11
2
2
L-R
B-Y
B
W
WR
R
-Y L
-R
-L
-O
B
G
W R-L
R-B ST RELAY
H-LP RELAY15A H-LP RH
15A H-LP LH 5
4
29
9
G -R
3
4
1
8G
B
G
R
B
R- 7L 6B
8
1
159
2
1 7 . 5A D EF- I/U P
10A TAIL
10A STO P1 7. 5A O BD1 7. 5A SRS
6
12
3
107
1 1
5
4
1 FUSE BLOCK
15A CIG & RAD
7. 5A ECU- IG20A WIPER
7. 5A TURN
10 A G AU G E
7. 5A IGN F 8
30A PO WER
30A DEF
W W-GB B-OB B- Y L-R
DE FOG GER
RE LAY
TAILLIG HT
RELAY 1
15
1
5
1
5
13
2
3
2
3
2 2
2
1E11
1F6
1F8
1K2
1K1
65
POWER MAIN
RELAYW-R1D
1D71F
1F4
1F1
1E9
1D8
1
1C

68
ENGINE CONTROL
I 4 IG 1 9
C 12
+BB 6
OX1B 5
OX2B 15
TE 1
B 2PIM
B 1VC
B 11VTA
B 3TH A
B 4TH W
B 7PTNK
B 9E2 B- R B- R B-O
BR
BR
Y
BR BR BR
B-R B-R
L-W B- R
BR LG-R
YY
L-R
Y-B
W
L- Y
BR BR
BR
B
B
BR
BR(
SHIELDED) (
SHIELDED)
A 5
G+ A 4
NE+A 17
NE -A 3
IG F
C 17ELS
B 10KNK
2
B B
(
SHIELDED)
(
SHIELDED)
MANIFOLD
ABSO LUTE
PRESSURE
SENSORTHROTTLE
POSITION
SENSOR
FROM TAI
RELAY (
L)
FR O M D EF
RELAY (
L)
CK
SO R ENGINE CONTROL MODULEB E 4 , E 5
AC, E 6
ENSOR
A 2 G-
A 1 G+ IGNITION COIL AND DISTRIBUTOR
I I 2 B1
B2
DISTRIBUTOR
B-O
BB-O
IG N ITIO N
COIL
A 20
IG T
R
G
R
B
L-Y (
SHIELDED)
BRB-O
1 2
1 2
OXYGEN SENSOR
(
BANK 1 SENSO R1)
OXYGEN SENSOR
(
BANK 1 SENSO R2) O 2
O 3
L
TO CRUISE
CONTROL ECU
V V
BR
B BBR
BR (
SHIELDED) (
SHIELDED)
I 5 I 5 I 5 I 4
DATA LINK CO NNECTOR 1 D 1
(
SHIELDED) (
SHIELDED)
B
TO A/C
AM PLIFIER
B-W
I 4W
G
I 5
B I 3 , I 4
A
IG2 8
1 2
CRANKSHAFT POSITION
SENSOR C 2
G
1 2
1 2
1 3 232
E2
Y
R
R
Y
L-Y
VCC PTNK1
G
BL-R
L Y
INTAKE AIR TEM P. SENSOR I 9
DIO
(
EN D 4
LLIG H T
OGGER
KNO
SEN K 1
ENGINE COOLANT TEMP. S E 2
IG 1 5
APOR PRESSURE SENSOR 1
I 5
8 12 3
TE 1+B E1
534
-C B TAC
IG T IG F
21 GNITER
3 1DE
GINE IDLE-UP)
1E2 VC PIM
M 11 432
T 1

133
I 4 I 4 B 2PIM
B 1VC
B 11VTA
B 3TH A
B 4THW
B 7PTN K
B 9E2
Y
BR BR BR
LG-R
YY
L-R
Y-B
W
BR BR
BR
BR
BR SENSOR
OR
ENGINE CONTROL M ODULEB E 4 , E 5AC, E 6
B 15
L-W
A 2
A 15 A1C13 C3C2A8A7B14 B13
TE1S1
S2 SL ST SLD+ SLD- FR+ FR- RR+ RR-
P-B
P
Y-B
LG
L- B
BR-B
Y-R
W-R
L- Y
R-L
I 5 I 5 I 5 TO CRUISE
CONTROL ECUIG 2 14 IG 2 13
IG 2 12 A 3
B 3A 1A2(
2W D)
B 1(
4W D)
B 5 B 6
(
4W D)
(
4W D)(
4WD)
(
4WD)
(
4W D)
(
4W D)
(
4W D)
(
4W D)L-B
BR - B LG
B E 1 , A
ELECTRO NICALLY
CONTROLLED
TRANSM ISSION SOLENOID
(
4W D)(
4W D)
I 5 P
PFROM CRUISE CONTROL ECU
1 31212 SOLENOID VALVE
SLD S 1
VEHICLE SPEED
SENSOR (
FRO N T) V 3
VEHICLE SPEED
SENSOR (
REAR) V 4
1 2
1 2
11 1 3 2432
32
E2
L Y
BR
BR
Y
L- Y
VCC PTNK
L-R
L Y M 1
MANIFOLD ABSOLUTE
PRESSURE SENSOR
THRO TTLE
POSITION T 1
INTAKE AIR TEMP. SENS I 9
ENGINE COOLANT
TEM P
. SE
NSOR E 2
VAPOR PRESSURE
SENSOR V 1 8
B-RDATA LINK
CONNECTOR 1 D 1
12I 5
IG 1 5
E2 VC PIM
+B TE1

138
SHIFT LOCK
IGR-W
W-BL-BGR
B-Y B-YGR
R-W
G-W G-W
GH T LOCK FROM POW ER SOURCE SYSTEM (
SEE PAGE 54)
15A
CIG &
RAD7. 5A
ECU-IG10A
STOP
713 18 612 15
FUSE B F 8
1 2
STOP LI
SW S 5
1I 13
1C 8
2
64L-RL G-WG G-R S 4
SHIFT LOCK
SOLENOID
1 2
W-B
W-B
Y INTERLOCK
LEN OID
1E 4
1H 31E 6
1H 101F 2
1I 11
51 2
KLS+ E AC C IG STP
P1
P
P2
SLS-
SLS+ SHIFT LOCK ECU
2
3
1SHIFT LOCK
CONTROL SW
1
KE
SO K 2
4C 3
4C 1 4C10

139
WHEN THE IGNITION SW IS TURNED TO ACC POSITION THE CURRENT FROM THE CIG & RAD FUSE FLOWS TO TERMINAL 5 OF THE
SHIFT LOCK ECU, IN THE ON POSITION, THE CURRENT FROM THE ECU-IG FUSE FLOWS TO TERMINAL 1 OF THE ECU.
1. SHIFT LOCK MECHANISM
WITH THE IGNITION SW ON, WHEN A SIGNAL THAT THE BRAKE PEDAL IS DEPRESSED (STOP LIGHT SW ON) AND A SIGNAL THAT
THE SHIFT LEVER IS PUT IN Pº POSITION (CONTINUITY BETWEEN P1 AND P OF THE SHIFT LOCK CONTROL SW) IS INPUT TO THE
ECU, THE ECU OPERATES AND CURRENT FLOWS FROM TERMINAL 1 OF THE ECU "TERMINAL SLS+ OF THE SHIFT LOCK
SOLENOID "SOLENOID " TERMINAL SLS- "TERMINAL 4 OF THE ECU "GROUND. THIS CAUSES THE SHIFT LOCK SOLENOID
TO TURN ON (PLATE STOPPER DISENGAGES) AND THE SHIFT LEVER CAN SHIFT INTO POSITION OTHER THAN THE Pº.
2. KEY INTERLOCK MECHANISM
WITH THE IGNITION SW ON OR ACC POSITION, WHEN THE SHIFT LEVER IS PUT IN Pº POSITION (NO CONTINUITY BETWEEN P2
AND P OF SHIFT LOCK CONTROL SW), THE CURRENT FLOWING FROM TERMINAL 6 OF THE ECU "THE KEY INTERLOCK SOLENOID
IS CUT OFF. THIS CAUSES THE KEY INTERLOCK SOLENOID TO TURN OFF (LOCK LEVER DISENGAGES FROM LOCK POSITION) AND
THE IGNITION KEY CAN BE TURNED FROM ACC TO LOCK POSITION.
S 4 SHIFT LOCK ECU
5-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ACC OR ON POSITION
1-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
4-GROUND : ALWAYS CONTINUITY
2-GROUND : APPROX. 12 VOLTS WITH THE BRAKE PEDAL DEPRESSED
S 5 STOP LIGHT SW
2-1 : CLOSED WITH THE BRAKE PEDAL DEPRESSED
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
F 831S 431
K 231S 531
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1C20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
1E20FUSE BLOCK ASSY WIRE AND J/B NO 1 (LOWER FINISH PANEL)1F20FUSE BLOCK ASSY WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
1H20INSTRUMENT PANEL WIRE AND J/B NO 1 (LOWER FINISH PANEL)1I20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
4C22INSTRUMENT PANEL WIRE AND J/B NO. 4 (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IG36RIGHT KICK PANEL
F 8
(
SEE PAGE 26)
12K 2
12
X4
56S 4
12S 5
BRO W N
SYSTEM OUTLINE
SERVICE HINTS