1996 TOYOTA RAV4 Service Repair Manual

D02312
(−)
(+)2
1
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−217
1996 RAV4 (RM447U)
Reference
Check the solenoid’s operation:
CHECK:
(a) Prepare a variable power supply.
(b) Connect positive  lead of the variable power supply to
terminal 1 of the solenoid connector and negative  lead
to terminal 2.
(c) Check the movement of the valve when the voltage is
gradually increased (A current greater than 1A should not
be supplied.).
OK:
As the voltage is increased, the valve should move
slowly in the → direction
(d) Check the movement of the valve when the voltage is cut
off.
OK:
The valve should return in the ← direction.
NG Replace solenoid valve SLD.
OK
2 Check harness and connector between shift solenoid valve SLD and ECM (See
page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM.

Q08868
To ST Relay DI−218
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
DTC P1780 Park/Neutral Position Switch Malfunction
CIRCUIT DESCRIPTION
The park/neutral position switch detects the shift lever position and sends signals to the ECM.
The ECM receives signals (NSW, R, 2 and L) from the park/neutral position switch. When the signal is not
sent to the ECM from the park/neutral position switch, the ECM judges that the shift lever is in the D position.
DTC No.DTC Detecting ConditionTrouble Area
P1780
2 or more switches are ON simultaneously for the N, R, 2 and
L positions (2 trip detection logic)
When driving under conditions (a), (b) and (c) for 30 sec. or
more, the park/neutral position switch is ON (N position).
(2 trip detection logic)
(a) Vehicle speed: 80 km/h (50 mph) or more
(b) Engine speed: 1,500 ∼ 3,000 rpm
(c) Manifold absolute pressure: 450 mmHg or more
Short in park/neutral position switch circuit.
Park/neutral position switch
ECM
WIRING DIAGRAM
DI418−02

D02301
NSW
R
L ON
2
Position
P, N
R
D
2
LNSW −
Body ground
Below 1 V
10 − 14 V*
10 − 14 VBelow 1 V Below 1 V Below 1 V
Below 1 V
Below 1 V
Below 1 V Below 1 V
Below 1 V
Below 1 V Below 1 V
Below 1 V
Below 1 V 10 − 14 V
10 − 14 V 10 − 14 V 10 − 14 V*
10 − 14 V R −
Body ground2 −
Body groundL −
Body ground
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−219
1996 RAV4 (RM447U)
INSPECTION PROCEDURE
1 Check PNP SW, REVERSE, 2ND and LOW signals.
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:
Shift the shift lever to the P, R, N, 2 or L, and read the PNP SW,
REVERSE, 2ND and LOW signals on the TOYOTA hand−held
tester.
OK:
Shift positionSignal
P, NPNP SW OFF → ON
RREVERSE OFF → ON
22ND OFF → ON
LLOW OFF → ON
When not using TOYOTA hand−held tester:
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals NSW, R, 2, and L of
ECM and body ground when the shift lever is shifted to the fol-
lowing positions.
OK:
*: Voltage will drop slightly due to lighting up of the back up light.
OK Check an replace ECM.
NG

Q08076
DI−220
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
2 Check park/neutral position switch.
PREPARATION:
Disconnect the park/neutral position switch connector.
CHECK:
Check the continuity between each terminal shown below when
the shift lever is moved to each position.
Shift positionTerminal No. to continuity
P2 − 75 − 6
R2 − 8
N2 − 95 − 6
D2 − 10
22 − 3
L2 − 4
NG Replace park/neutral position switch.
OK
Repair or replace harness and connector between battery and park/neutral position switch, and
park/neutral position switch and ECM.

D02302
Cruise Control ECU
OD
C169
Y−B
E620
OD14 − 6 V ECM
D02303
ON
(−)
(+)OD1
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−221
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 in some conditions.
The cruise control ECU sends O/D cut 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 to next circuit inspection shown on
problem symptoms table (See page DI−192).
NG
DI419−01

D02305
ON
Cruise Control ECU
(−)(+)
OD
DI−222
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
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: 4 − 6 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.

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 (A540H)
DI−223
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 close when it is pushed once
again. In O/D main switch at the OFF position, the O/D OFF indicator light lights up, and the ECM prohibits
shifting to O/D.
WIRING DIAGRAM
DI41A−02

BE3840Q02238AT5623D04178
ON
OFF ON
O/D ButtonO/D OFF
Indicator lightO/D Main
Switch Point ON
OFF
ON OFF
DI−224
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
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 button
is pushed to ON.
OK:
”O/D OFF” indicator light goes off.
(c) Check the ”O/D OFF” indicator light when the O/D button
is pushed again, to OFF.
OK:
”O/D OFF” indicator light lights up.
NG Go to step 4.
OK