1996 TOYOTA RAV4 Service Repair Manual

DI−356
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
3 Check for open and short in harness and connector between ECU and throttle
position sensor, throttle position sensor and body ground (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECU.

N17899
ECM
E6
E4
E10
E116
1 1520
P
P
IG16
P229 Y−B
OD
ECTCruise Control ECU
*1*2*1: FF
*2: 4WD Electronically
Controlled
Transaxle
SolenoidOD1
S2
P
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−357
1996 RAV4 (RM447U)
Electronically Controlled Transaxle Communication Circuit
CIRCUIT DESCRIPTION
When driving uphill under cruise control, in order to reduce shifting due to ON−OFF overdrive operation and
to provide smooth driving, when down shifting in the electronically controlled transaxle occurs, a signal to
prevent upshift until the end of the uphill slope is sent from the cruise control ECU to the electronically con-
trolled transaxle.
Terminal ECM of the cruise control ECU detects the shift change signal (output to electronically controlled
transaxle No.2 solenoid) from the electronically controlled transaxle.
If vehicle speed down, also when terminal electronically controlled transaxle of the cruise control ECU re-
ceive down shifting signal, it sends a signal from terminal OD to OD1 to cut overdrive until the end of the
uphill slope, and the gear shifts are reduced and gear shift points in the electronically controlled transaxle
are changed.
WIRING DIAGRAM
DI42U−02

BE3840N14700I09120
ON
OD (−)
(+)
DI−358
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
INSPECTION PROCEDURE
1 Check operation of overdrive.
PREPARATION:
Test drive after engine warm up.
CHECK:
Check that overdrive ON ↔ OFF occurs with operation of OD switch ON − OFF.
NG Check and repair electronically controlled
transaxle (See page DI−141 or DI−192).
OK
2 Check voltage between terminal OD of harness side connector of ECU and body
ground.
PREPARATION:
Remove ECU with connector still connected.
CHECK:
(a) Disconnect ECU connector.
(b) Turn ignition switch ON.
(c) Measure voltage between terminal OD of harness side
connector of ECU and body ground.
OK:
Voltage: 10 − 16 V
NG Go to step 5.
OK

N14701
(−)ECT
(+)
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−359
1996 RAV4 (RM447U)
3 Check voltage between terminal ECT of cruise control ECU connector and body
ground (On test drive).
PREPARATION:
(a) Connect ECU connector.
(b) Test drive after engine warm up.
CHECK:
Check voltage between terminal ECT of cruise control ECU
connector and body ground when OD switch is on and off.
OK:
Gear PositionVoltage
O/DBelow 1 V
3rd10 − 16 V
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−336).
NG
4 Check for open and short in harness and connector between terminal ECT of
cruise control ECU and electronically controlled transaxle solenoid
(See page IN−30).
NG Repair or replace harness or connector.
OK
Check and repair ECU.
5 Check for open and short in harness and connector between terminal OD of ECU
and terminal OD1 of ECM (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECU.

N17900
Park/Neutral
Position Switch
P1
P1IG11
10
8
E66
B−WCruise Control ECU
D
*1*2
ECM
DB−W
B−WB−W
*1 FF
*2: 4WD
DI−360
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
Park/Neutral Position Switch Circuit
CIRCUIT DESCRIPTION
When the shift position is put in except D position, a signal is sent from the park/neutral position switch to
the ECU. When this signal is input during cruise control driving, the ECU cancels the cruise control.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of starter.
CHECK:
Check that the starter operates normally and that the engine starts.
NG Proceed to engine troubleshooting
(See page DI−1).
OK
DI42V−02

ON
OFFShifting into
except D position
BE3840N14702I09121
ON
IG ON
D (−) (+)
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−361
1996 RAV4 (RM447U)
2 Input signal check.
PREPARATION:
(a) See input signal check on page DI−328.
(b) Check the indicator light when shifting into except D posi-
tion.
OK:
The indicator light goes off when shifting into except
D position.
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−336).
NG
3 Check voltage between terminal D of ECU connector and body ground.
PREPARATION:
Remove ECU with connectors still connected.
CHECK:
(a) Turn ignition switch ON.
(b) Measure voltage between terminal D of ECU connector
and body ground, when shifting into D position and other
positions.
OK:
Shift PositionVoltage
D position10 − 16 V
Other positionsBelow 1 V
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−336).
NG

DI−362
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
4 Check for open in harness and connector between ECU and GAUGE fuse
(See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECU.

N17901
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−363
1996 RAV4 (RM447U)
Clutch Switch Circuit
CIRCUIT DESCRIPTION
When the clutch pedal is depressed, the clutch switch sends a signal to the cruise control ECU, when this
signal is input to the cruise control ECU during cruise control driving, the cruise control ECU cancels cruise
control.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of starter.
CHECK:
Check that the starter operates normally and that the engine starts.
NG Proceed to engine troubleshooting
(See page DI−1).
OK
DI42W−02