1996 TOYOTA RAV4 Cv axle

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

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.