1996 TOYOTA RAV4 ECU

N17436CRUISE Indicator Light
DI42I−02
BE4034
ON
OFF1.5 sec 0.5 secWarning
F02201Tc E1
DI−328
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
PRE−CHECK
1. DIAGNOSIS SYSTEM
(a) Check the indicator.
(1) Turn the ignition switch to ON.
(2) Check that the CRUISE MAIN indicator light comes
on when the cruise control main switch is pushed
ON, and that the indicator light goes off when the
main switch is pushed OFF.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting (See page BE−2) for the combination meter
section.
(b) Check the DTC.
HINT:
If a malfunction occurs in the vehicle speed sensors or actuator,
etc. during cruise control driving, the ECU actuates AUTO CAN-
CEL of the cruise control and blinks the CRUISE MAIN indicator
light to inform the driver of a malfunction. At the same time, the
malfunction is stored in memory as a DTC.
(c) Output of DTC using diagnosis check wire.
(1) Turn the ignition switch to ON.
(2) Using SST, connect terminals Tc and E
1 of DLC1.
SST 09843−18020
(3) Read the DTC on the CRUISE MAIN indicator light.
HINT:
If the DTC is not output, inspect the diagnosis circuit (See
page DI−374).
As an example, the blinking patterns for codes; normal,
11 and 21 are shown in the illustration.

BE4032
BE4033I00021
ON
OFF0.25 secNormal code
Malfunction codes 11 and 21
0.5 sec
0.5 sec
2.5 sec 4 sec 1.5 sec
Code 11
Code 21
0.25 sec
ON
OFF
N09348
ECUTOYOTA
hand−held tester
TOYOTA
break−out−box
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−329
1996 RAV4 (RM447U)
(4) Check for the problem, use the DTC table on the
next page.
(5) After completing the check, disconnect terminals Tc
and E
1, and turn off the display.
2. ECU TERMINAL VALUES MEASUREMENT USING
TOYOTA BRAKE−OUT−BOX AND TOYOTA HAND−
HELD TESTER
(a) Hook up the TOYOTA break−out−box and TOYOTA
hand−held tester to the vehicle.
(b) Read the ECU input/output values by following the
prompts on the scan tool screen.
HINT:
TOYOTA hand−held tester has a ”Snapshot” function.
This records the measured values and is effective in the diagno-
sis of intermittent problems.
Please refer to the TOYOTA hand−held tester/TOYOTA break−
out−box operator’s manual for further details.

N17904
R/B No. 2
DOME Fuse
DI−330
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
3. DTC CLEARANCE
(a) After completing repairs, the DTC retained in memory can
be cleared by removing the ECU−IG fuse for 10 seconds
or more, with the ignition switch off.
(b) Check that the normal code is displayed after connecting
the fuse.

BE6443
(1)
(2)
(1)
No.Operation MethodCRUISE MAIN Indicator Light
Blinking PatternDiagnosis
1 Turn SET/COAST switch ON
2Turn RES/ACC switch ON
3Turn CANCEL switch ON
Turn stop light switch ON
Depress brake pedal
Turn PNP switch OFF
(Shift to except D position)
4Drive at about 40 km/h
(25 mph)or higher
Drive at about 40 km/h
(25 mph) or below
LightON
OFF
LightON
OFF
LightON
OFFSwitch ON
Switch OFF
LightON
OFFSwitch OFF
Switch ONSET/COAST switch circuit
is normal
RES/ACC switch circuit
is normal
CANCEL switch circuit
is normal
Stop light switch circuit
is normal
PNP switch circuit is
normal
Vehicle Speed Sensor is
normal
LightON
OFF LightON
OFF
1sec.
0.25 sec.0.25 sec.
Turn clutch switch OFF
(Depress clutch pedal)Clutch switch circuit
is normal
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−331
1996 RAV4 (RM447U)
4. INPUT SIGNAL CHECK
HINT:
(1) For check No.1 − No.2.
Turn the ignition switch ON.
(2) For check No.3.
Turn ignition switch ON.
Shift to D position. (A/T Vehicle)
(3) For check No.4.
Jack up the vehicle.
Start the engine.
Shift to D position. (A/T Vehicle)
(a) Press the control switch to the SET/COAST or RES/ACC
position and hold it down or hold it up (1).
(b) Push the main switch ON (2).
(c) Check that the CRUISE MAIN indicator light blinks twice
or 3 times repeatedly after 3 seconds.
(d) Turn the SET/COAST or RES/ACC switch OFF.
(e) Operate each switch as listed in the table below.
(f) Read the blinking pattern of the CRUISE MAIN indicator
light.
(g) After performing the check, turn the main switch OFF.
HINT:
When 2 or more signals are input to the ECU, the lowest num-
bered code will be displayed first.

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

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