TOYOTA RAV4 1996 Service Repair Manual

ON
OFFClutch pedal is depressed
BE3840N14702I09121
ON
IG ON
D (−) (+)
DI−364
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
2 Input signal check.
CHECK:
(a) See input signal check on page DI−328.
(b) Check the indicator light when the clutch pedal is de-
pressed.
OK:
The indicator light goes off when the clutch pedal is
depressed.
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 the clutch pedal is depressed.
OK:
Shift PositionVoltage
ON (pedal depressed)Below 1 V
OFF10 − 16 V
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−336).
NG

− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−365
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.

N21699
Ignition
Switch
1D 1F1E
1A
1D 1K9
22 4 247
466
B 14
BB
Junction
Connector W−BW−B
13
GND W
IG
Fuse Block
ALT
100 A
BatteryJ/B No.1R/B No.2 J/B No.1
J/B No.1Cruise Control
ECU
Fuse Block
ECU−IG
7.5 AB−Y B−Y
W
B−Y
AM1
40 AW DI−366
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
ECU Power Source Circuit
CIRCUIT DESCRIPTION
The ECU power source supplies power to the actuator and sensors, etc., Terminal GND and the cruise con-
trol ECU case are grounded.
WIRING DIAGRAM
DI42X−02

N17440
ECU−IG
Fuse Block
BE3840N14703I09122
ON
(−)GND
(+)B
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−367
1996 RAV4 (RM447U)
INSPECTION PROCEDURE
1 Check ECU−IG fuse.
PREPARATION:
Remove ECU−IG fuse from fuse block.
CHECK:
Check continuity of ECU−IG fuse.
OK:
Continuity
NG Check for short in all the harness and compo-
nents connected to the ECU−IG fuse
(See attached wiring diagram).
OK
2 Check voltage between terminals B and GND of ECU connector.
PREPARATION:
Remove ECU with connectors still connected.
CHECK:
(a) Turn ignition switch ON.
(b) Measure voltage between terminals B and GND of ECU
connector.
OK:
Voltage: 10 − 16 V
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−336).
NG

N14704BE6053I09123
LOCK
GND
DI−368
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
3 Check continuity between terminal GND of ECU connector and body ground .
CHECK:
Measure resistance between terminal GND of cruise control
ECU connector and body ground.
OK:
Resistance: 1 Ω or less
NG Repair or replace harness or connector.
OK
Check and repair harness and connector be-
tween battery and ECU.

N21700
FL Block
MAIN Fuse
80 A
BatteryR/B No.2
DOME Fuse
225
7
1J1G
15BATT Cruise Control ECU
L−Y W
15 AL−Y
N17904
DOME Fuse R/B No.2
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−369
1996 RAV4 (RM447U)
Back−up Power Source Circuit
CIRCUIT DESCRIPTION
The ECU back−up power source provides power even when the ignition switch is off and is used for DTC
memory, etc.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check DOME fuse.
PREPARATION:
Remove DOME fuse from R/B No.2.
CHECK:
Check continuity of DOME fuse.
OK:
Continuity
NG Check for short in all the harness and
components connected to the DOME fuse
(See attached wiring diagram).
OK
DI42Y−02

N14705BE6053I09124
LOCK
BATT
(−) (+)
DI−370
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
2 Check voltage between terminal BATT of ECU connector and body ground.
PREPARATION:
Remove ECU with connectors still connected.
CHECK:
Measure voltage between terminal BATT of ECU connector
and body ground.
OK:
Voltage: 10 − 16 V
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−336).
NG
Check and repair harness and connector be-
tween battery and ECU.

I22691
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−371
1996 RAV4 (RM447U)
Main Switch Circuit (Cruise Control Switch)
CIRCUIT DESCRIPTION
When the cruise control main switch is turned off, the cruise control does not operate.
WIRING DIAGRAM
DI42Z−02

BE3840N14706I09125
ON
GND
CMS (−)
(+)
N15555
42
DI−372
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
INSPECTION PROCEDURE
1 Check voltage between terminal CMS and GND of cruise control ECU connector.
PREPARATION:
Remove cruise control ECU with connectors still connected.
CHECK:
(a) Turn ignition switch ON.
(b) Measure voltage between terminal CMS and GND of
cruise control ECU connector when main switch is held
ON and OFF.
OK:
Main switchVoltage
OFF10 − 16 V
ONBelow 1 V
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−336).
NG
2 Check main switch.
PREPARATION:
(a) Remove steering wheel center pad (See page SR−12).
(b) Disconnect cruise control switch connector.
CHECK:
Check continuity between terminals 2 and 4 of cruise control
switch connector when main switch is held ON and OFF.
OK:
Main switchTerminal No. to continuity
OFF
ON2 − 4
NG Replace control switch.
OK

− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−373
1996 RAV4 (RM447U)
3 Check harness and connector between cruise control ECU and main switch,
main switch and body ground (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace cruise control ECU.