1996 TOYOTA RAV4 Service Repair Manual

DI42J−02
DI−332
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below and proceed to the appropriate page.
DTC No.
(See Page)Detection ItemTrouble Area
−Normal−
11
(DI−338)Actuator Motor Circuit
Cruise control actuator motor
Harness or connector between actuator motor and ECU
 ECU
12
(DI−340)Actuator Magnetic Clutch Circuit
Cruise control actuator magnetic clutch
Harness or connector between ECU and magnetic clutch,
magnetic clutch and body ground
ECU
STOP Fuse
13
(DI−343)Actuator Position Senor Circuit
Cruise control actuator position sensor
Harness or connector between actuator position sensor and
ECU
ECU
14
(DI−338)Actuator Motor Circuit
Actuator Position Sensor Circuit
Cruise control actuator motor
Cruise control actuator position sensor
Harness or connector between actuator position sensor and
body ground
Harness or connector between actuator motor and ECU
 ECU
*21
(DI−346)Vehicle Speed Sensor Circuit
Vehicle speed sensor
Combination meter
Harness or connector between vehicle speed sensor and
combination meter, combination meter and ECU
 ECU
32
(DI−348)Control Switch Circuit (Cruise Control Switch)
Cruise control switch
Harness and connector between control switch and ECU
ECU
41Cruise Control ECU ECU
42Source Voltage DropBattery
HINT:
When 2 or more codes are indicated, the lowest numbered code will be displayed first.
If the inspection ”Proceed to next circuit inspection shown on matrix chart” is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue check.
If the trouble still reappears even though there are no abnormalities in any of the other circuits, then
check or replace the cruise control ECU as the last step.
(*) When the vehicle speed decrease on uphill roads, the speed can be set again and driving continued. (This
is not a malfunction.)

DI42K−01
I10025
Stop Light Switch
Park/Neutral Position SwitchVehicle Speed Sensor Cruise Control ECU Main & Control Switch
Clutch Switch
Cruise Control Actuator
R/B No.2
 DOME Fuse Fuse Block
 STOP Fuse
 ECU−IG Fuse
 GAUGE Fuse
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−333
1996 RAV4 (RM447U)
PARTS LOCATION

DI7HO−01
I10026CRUISE Control ECU DI−334
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
TERMINALS OF ECU
SymbolsTerminalsConditionStandard Value
D ↔ GND2 − 13
M/T: Depress clutch pedal.
A/T: Shift to except D position.Below 1 V
M/T: Release clutch pedal.
A/T: Shift to D position.10 − 16 V
Pi ↔ GND7 − 13
IG ON. Main switch ON.
Main indicator light ON.Below 1.2 V
IG ON. Main switch OFF.
Main indicator light OFF.10 − 16 V
Tc ↔ GND8 − 13Ignition switch ON.10 − 16 V
O/D ↔ GND9 − 13
Except during cruise control driving.10 − 16 V
O/D Switch ON.
During cruise control driving .
(Driving on flat road).
10 − 16 V
O/D Switch OFF.
During cruise control driving .
(3rd driving).
Below 1 V
L ↔ GND10 − 13During cruise control driving.9 − 15 V
Except during cruise control driving.Below 1 V
MC ↔ GND11 − 13
During cruise control driving .
COAST switch hold ON.9 − 16 V
During cruise control driving .
ACCEL switch hold ON.Below 1 V
MO ↔ GND12 − 13
During cruise control driving.
ACCEL switch hold ON.9 − 15 V
During cruise control driving.
COAST switch hold ON.Below 1 V
GND ↔ Body Ground13 −
Body GroundAlways.Below 1 V
B ↔ GND14 − 13Ignition switch ON.10 − 16 V
BATT ↔ GND15 − 13Always.10 − 16 V
STP− ↔ GND16 − 13Depress brake pedal.10 − 16 V
Release brake pedal.Below 1 V

− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−335
1996 RAV4 (RM447U) CCS ↔ GND
18 − 13
IG ON. Main switch ON.
Switch neutral position.10 − 16 V
IG ON. Main switch ON.
CANCEL switch hold ON.5.1 − 8.3 V
IG ON. Main switch ON.
SET/COAST switch hold ON.2.4 − 4.0 V
IG ON. Main switch ON.
RESUME/ACCEL switch hold ON.0.8 − 1.4 V
CMS ↔ GND19 − 13
IG ON. Main switch hold ON.
(Indicator light ON)Below 1 V
IG ON. Main switch hold OFF.
(Indicator light OFF)10 − 16 V
SPD ↔ GND20 − 13
Engine start.
Car stationary.4.7 − 5.2 V
During driving. (Pulse generated)3 − 7 V
IDL ↔ GND21 − 13IG ON. Throttle valve fully opened.Below 1 V
IG ON. Throttle valve fully closed.10 − 16 V
ECT ↔ GND22 − 13
During cruise control driving.
O/D switch ON.Below 1 V
During cruise control driving.
O/D switch OFF (3rd driving).10 − 16 V
VR1 ↔ GND23 − 13Ignition switch ON.4.7 − 5.2 V
VR2 ↔ VR324 − 25
During cruise control driving.1.0 − 4.7 V
IG ON. Control plate fully opened.4.2 − 4.7 V
IG ON. Control plate fully closed.1.0 − 1.2 V
VR3 ↔ GND25 − 13Always.Below 1 V
L− ↔ GND26 − 13Always.Below 1 V

DI42M−01
DI−336
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the DTC check but the trouble still occurs (reappears), troubleshoot for
each problem symptom, checking the circuits for each symptom in the order given in the table below. Pro-
ceed to the page indicated for each circuit.
HINT:
If the instruction ”Proceed to next circuit inspection shown on matrix chart” is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.
If the trouble still reappears even through there are no abnormalities in any of the other circuits, then
check or replace the cruise control ECU as the last step.
SymptomSuspect AreaSee page
SET not occurring or CANCEL occurring.
(DTC is Normal)
1. Main Switch Circuit (Cruise Control Switch)
2. Vehicle Speed Sensor Circuit
3. Control Switch Circuit (Cruise Control Switch)
4. Stop Light Switch Circuit
5. Park/Neutral Position Switch Circuit
6. Clutch Switch Circuit
7. Actuator
8. Cruise Control ECUDI−371
DI−346
DI−348
DI−351
DI−360
DI−363
DI−338
IN−30
SET not occurring or CANCEL occurring.
(DTC does not output)1. ECU Power Source Circuit
2. Cruise Control ECUDI−366
IN−30
Actual vehicle speed deviates above or below the set speed.
1. Actuator Control Cable
2. Vehicle Speed Sensor Circuit
3. Actuator
4. Cruise Control ECUDI−376
DI−346
DI−338
IN−XXX
Gear shifting is frequent between 3rd and OD when driving on
uphill road. (Hunting)1. Electronically Controlled Transaxle Communication
Circuit
2. Cruise Control ECUDI−357
IN−30
Cruise control not cancelled, even when brake pedal is de-
pressed.
1. Actuator Control Cable
2. Stop Light Switch Circuit
3. Actuator
4. Cruise Control ECUDI−376
DI−351
DI−338
IN−30
Cruise control not cancelled, even when transmission is shifted to
except D position. (A/T)
1. Actuator Control Cable
2. Park/Neutral Position Switch Circuit
3. Actuator
4. Cruise Control ECUDI−376
DI−360
DI−338
IN−30
Cruise control not cancelled, even when clutch pedal depressed.
(M/T)
1. Actuator Control Cable
2. Clutch Switch Circuit
3. Actuator
4. Cruise Control ECUDI−376
DI−363
DI−338
IN−30
Control switch does not operate.
(SET/COAST, ACC/RES, CANCEL not possible)
1. Actuator Control Cable
2. Control Switch Circuit (Cruise Control Switch)
3. Actuator
4. Cruise Control ECUDI−376
DI−363
DI−338
IN−30
SET possible at 40 km/h (25 mph) or less, or CANCEL does not
operate at 40 km/h (25 mph) or less.
1. Actuator Control Cable
2. Vehicle Speed Sensor Circuit
3. Actuator
4. Cruise Control ECUDI−376
DI−346
DI−338
IN−30
Poor response in ACCEL and RESUME modes.
1. Actuator Control Cable
2. Electronically Controlled Transaxle Communication
Circuit
3. Control Switch Circuit (Cruise Control Switch)
4. Actuator
5. Cruise Control ECUDI−3764
DI−357
DI−363
DI−338
IN−30

− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−337
1996 RAV4 (RM447U) O/D does not Resume, even through the road is not uphill.
1. Electronically Controlled Transaxle Communication
Circuit
2. Cruise Control ECUDI−357
IN−30
DTC memory is erased.1. Back−up Power Source Circuit
2. Cruise Control ECUDI−369
IN−30
DTC is not output, or is output when is should not be.1. Cruise Control ECUIN−30
Cruise MAIN indicator light remains ON or fails to light up.Combination meter troubleshooting on page BE−2

DI42N−02
Duty Ratio =A + BA
x 100 (%)
ON
OFFA
B
1 cycle
N07458
Cruise Control
Actuator
Motor5
Limit SwitchCruise Control
ECU
R−B 7
6
612
R−G R−G R−B
IB2
IB2MC
MO 11
DI−338
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
CIRCUIT INSPECTION
DTC 11, 14 Actuator Motor Circuit
CIRCUIT DESCRIPTION
The actuator motor is operated by signals from the ECU. Acceleration and deceleration signals are trans-
mitted by changes in the Duty Ratio (See note below).
Duty Ratio:
The duty ratio is the ratio of the period of continuity in one cycle. For example, if A is the period of continuity
in one cycle, and B is the period of non−continuity, then.
DTC No.Detection ItemTrouble Area
11Short in motor circuitCruise control actuator motor
Harness or connector between actuator motor and ECU
ECU
14Open in actuator motor circuit
WIRING DIAGRAM

N14648N17426I09111
Acceleration
SideDeceleration
Side
Control
Plate (+)5
4
(−)
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−339
1996 RAV4 (RM447U)
INSPECTION PROCEDURE
1 Check actuator motor.
PREPARATION:
(a) Remove cruise control actuator.
(b) Disconnect actuator connector.
CHECK:
(a) Connect positive + lead to terminal 5 and negative − lead
to terminal 4 of actuator connector (Magnetic clutch ON).
NOTICE:
Do not connect the high tension cables to the wrong bat-
tery terminal.
You will damage the cruise control actuator.
(b) When battery positive voltage is applied to each terminal
of actuator connector, check that the control plate moves
smoothly without hesitating.
Moving directionTerminal No. to connect
Acceleration sidePositive + − 6Negative − − 7
Deceleration sidePositive + − 7Negative − − 6
(c) With the motor rotating as in 2., check that the motor is
stopped by limit switches when the control plate moves to
fully opened or fully closed position.
NG Replace actuator assembly.
OK
2 Check harness and connector between cruise control ECU and actuator motor
(See page IN−30).
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown on matrix chart (See page DI−336).
However, when DTC 11, 14 is displayed, check and replace cruise control ECU.