1996 TOYOTA RAV4 Service Repair Manual

D02307
ON
(−)
(+)OD2
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−225
1996 RAV4 (RM447U)
2 Check OVERDRIVE CUT SW2 signal.
When using TOYOTA hand−held tester:
PREPARATION:
(a) Connect a TOYOTA hand−held tester to the DLC3.
(b) Turn the ignition switch ON and TOYOTA hand−held tes-
ter main switch ON.
CHECK:
Read the OVERDRIVE CUT SW2 signal on the TOYOTA
hand−held tester.
OK:
O/D main switch pushed in:
OVERDRIVE CUT SW2 .......... ON
O/D main switch pushed once again:
OVERDRIVE CUT SW2 .......... OFF
When not using TOYOTA hand−held tester:
PREPARATION:
Turn the ignition switch ON.
CHECK:
Check the voltage between terminal OD2 of the ECM and body
ground.
OK:
O/D Main SwitchVoltage
OFFBelow 1 V
ON10 − 14 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−192).
NG
3 Check harness and connector between O/D OFF indicator light and ECM (See
page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM.

D02308
2
4
DI−226
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
4 Check O/D main switch.
PREPARATION:
(a) Disconnect the O/D main switch connector.
(b) Measure the resistance between terminals 2 and 4 of the
O/D main switch connector.
OK:
O/D Main SwitchResistance
ON∞ Ω (open)
OFF0 Ω (continuity)
NG Replace O/D main switch.
OK
Check and replace combination meter (See
page BE−37).
O/D OFF indicator light remains ON:
1 Check O/D main switch.
NG Replace O/D main switch.
OK
2 Check harness and connector between O/D OFF indicator light and O/D main
switch, and O/D OFF indicator light and ECM (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM.

Q08870
Fuse Block
Junction Connector
FL Block
Stop Light RH Stop Light LHTo ABS ECU
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−227
1996 RAV4 (RM447U)
Stop Light Switch Circuit
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling, while driving in lock−up condition, when
brakes are suddenly applied.
When the brake pedal is operated, this switch sends a signal to ECM. Then the ECM cancels of the lock−up
clutch while braking is in progress.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of stop light.
CHECK:
Check if the stop lights go on and off normally when the brake pedal is operated and released.
NG Check and repair stop light circuit.
OK
DI994−01

A00420
Brake Pedal
Depressed ON
Brake Pedal
Released
ON
STP
(+)
(−)
DI−228
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
2 Check STP signal.
When using OBD II scan tool or TOYOTA hand−held tester:
PREPARATION:
(a) Connect the OBD II scan tool or TOYOTA hand−held tes-
ter to the DLC3
(b) Turn the ignition switch ON and TOYOTA hand−held tes-
ter main switch ON.
CHECK:
Read the STP signal on the TOYOTA hand−held tester.
OK:
Brake PedalSTP Signal
DepressedON
ReleasedOFF
When not using OBD II scan tool or TOYOTA hand−held tes-
ter:
CHECK:
(a) Turn the ignition switch ON.
(b) Check the voltage between B/K of the ECM and body
ground.
OK:
Brake PedalVoltage
Depressed7.5 − 14 V
ReleasedBelow 1.5 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−192).
NG
3 Check harness and connector between ECM and stop light switch (See page
IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM.

Q08867
Junction Connector
Fuse Block
FL Block
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−229
1996 RAV4 (RM447U)
Pattern Select Switch Circuit
CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL and POWER patterns, 2 and L position and
the lock−up patterns. Following the programs corresponding to the signals from the pattern select switch,
the park / neutral position switch and other various sensors, the ECM switches the solenoid valves ON and
OFF, and control the transmission gear change and the lock−up clutch operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of PWR indicator light.
CHECK:
Check if the PWR indicator light normally when the pattern select switch is set to NORM and PWR position.
OK:
Pattern select switchPWR indicator light
PWRLight up
NORMGoes off
NG Check and repair PWR indicator light (See page
BE−37).
OK
DI41B−02

D02309
ON
(−)
(+)P
DI−230
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
2 Check PATTERN SEL SW2
When using TOYOTA hand−held tester:
PREPARATION:
(a) Connect a TOYOTA hand−held tester to the DLC3.
(b) Turn the ignition switch ON and TOYOTA hand−held tes-
ter main switch ON.
CHECK:
Read the PATTERN SEL SW2 signal on the TOYOTA hand−
held tester.
OK:
Pattern select switch pushed in:
PATTERN SEL SW2 ..........ON
Pattern select switch pushed once again:
PATTERN SEL SW2 ..........OFF
When not using TOYOTA hand−held tester:
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure voltage between terminal P of ECM and body ground
when the pattern select switch is set to the PWR (POWER)
position and NORM (NORMAL) position.
OK:
Pattern Select SwitchVoltage
PWR7.5 − 14 V
NORMBelow 1 V
HINT:
The ECM uses the normal pattern signal if the power signal is
not input.
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−192).
NG

D02310
3
1
54 2
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−231
1996 RAV4 (RM447U)
3 Check pattern select switch.
PREPARATION:
Remove the pattern select switch.
CHECK:
Measure the resistance between terminals 1 and 3 of the pat-
tern select switch connector when the select switch is set to
PWR and NORM positions.
OK:
PatternResistance
PWR0 Ω (continuity)
NORM∞ Ω (open)
NG Replace pattern select switch.
OK
4 Check harness and connector between battery and pattern select switch, and
pattern select switch and ECM (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM.

DI41C−02
Vehicle Brought to Workshop
Customer Problem Analysis
P. DI−233
Check and Clear DTC (Pre−check)
P.
DI−234
Items inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the indicated pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation
P. IN−30
Symptom
does not occur
Symptom
occurs
DTC Check
P. DI−234
Sensor CheckCircuit Inspection
P. DI−246 −DI−282
DTC Chart
P. DI−239Problem Symptoms Table
P. DI−245
Check for Fluid Leakage
P. DI−282
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
67
89
10
11
Step 8:Diagnostic steps permitting the use of the
TOYOTA hand−held tester, or TOYOTA
brake−out−box.
DI−232
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
1996 RAV4 (RM447U)
ANTI−LOCK BRAKE SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshooting in accordance with the procedure on the following pages.