TOYOTA RAV4 1996 Service Repair Manual

Q08869
Junction Connector Fuse Block
FL Block Junction Connector
O/D Main Switch*
O/D Main switch
Contacts go open with switch pushed in.
Contacts go closed with switch pushed once again. *:
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−161
1996 RAV4 (RM447U)
O/D Main Switch & O/D OFF Indicator Light Circuit
CIRCUIT DESCRIPTION
The O/D main switch contacts go open when the switch is pushed in and go closed when it is pushed once
again. In O/D main switch OFF position, the O/D OFF indicator lights up, and the ECM prohibits shifting to
O/D.
WIRING DIAGRAM
DI40N−02

BE3840Q02238Q08075D04177
ON
ON
OFF
DI−162
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
INSPECTION PROCEDURE
O/D OFF indicator light does not light up.
1 Check operation of O/D Main Switch.
CHECK:
(a) Turn the ignition switch ON.
(b) Check the ”O/D OFF” indicator light when the O/D main
switch is pushed in to ON.
OK:
”O/D OFF” indicator light goes off.
(c) Check the ”O/D OFF” indicator light when the O/D main
switch is pushed again, to OFF.
OK:
”O/D OFF” indicator light lights up.
NG Go to step 4.
OK

D02211
ON
OD2
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−163
1996 RAV4 (RM447U)
2 Check OVERDRIVE CUT SW2 signal.
When using TOYOTA hand−held tester:
PREPARATION:
(a) Connect the 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 OD2 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−141).
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.

Q08778
2
4
Q08778
2
4
DI−164
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
4 Check O/D main switch.
PREPARATION:
(a) Disconnect the O/D main switch connector.
(b) Check the continuity 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.
CHECK:
(a) Disconnect the O/D main switch connector.
(b) Check the continuity 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

− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−165
1996 RAV4 (RM447U)
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.

Q05352
Cruise Control ECU
C16
ECM
4 − 6 V
9
ODOD1
Y−B20
E6
D02210
ON
OD1
DI−166
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
O/D Cancel Signal Circuit
CIRCUIT DESCRIPTION
While driving uphill with cruise control activated, in order to minimize gear shifting and provide smooth cruis-
ing, O/D may be prohibited temporarily under some conditions.
The cruise control ECU sends O/D cur signals to the ECM as necessary and the ECM cancels O/D shifting
until these signals are discontinued.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminal OD1 of ECM and body ground.
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminal OD1 of the ECM and
body ground.
OK:
Voltage: 4 − 6 V
OK Proceed next circuit inspection shown on prob-
lem symptoms table (See page DI−141).
NG
DI40O−01

BE3840Q07660D02287
ON
OD
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−167
1996 RAV4 (RM447U)
2 Check voltage between terminal OD of cruise control ECU harness side connec-
tor and body ground.
PREPARATION:
(a) Disconnect the cruise control ECU connector.
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage between terminal OD of the cruise control
ECU harness side connector and body ground.
OK:
Voltage: 9 − 14 V
OK Check and replace cruise control ECU (See
page IN−30).
NG
3 Check harness and connector between cruise control ECU and ECM (See page
IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM.

Q08867
Junction Connector
Fuse Block
FL Block
DI−168
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
Pattern Select Switch Circuit
CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL and POWER patterns, 2 position, and L posi-
tion 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−2).
OK
DI40P−02

D02208
ON
P
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−169
1996 RAV4 (RM447U)
2 Check PATTERN SEL SW2.
When using TOYOTA hand−held tester:
PREPARATION:
(a) Connect the 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 the voltage between terminal P of the ECM and body
ground when the pattern select switch is set to the PWR (POW-
ER) 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−141).
NG

Q08779
3
1
DI−170
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
3 Check pattern select switch.
PREPARATION:
Remove the pattern select switch.
CHECK:
Check the resistance between terminals 1 and 3 of the pattern
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.