Diagnosis Procedure
- CHECK ENCODER SIGNAL
- Turn ignition switch ON.
- Check signal between front power window switch (passenger side) harness connector and ground with oscilloscope.
Signal name
(+)
(-)
Signal
(Reference value)
Front power window switch (passenger side)
Connector
Terminal
Encoder signal 1
D25
12
Ground
Refer to following signal
Encoder signal 2
15
Is the inspection result normal?
YES
Replace front power window switch (passenger side). Refer to FRONT POWER WINDOW SWITCH (PASSENGER SIDE) : Removal & Installation .
NO
GO TO 2.
- CHECK ENCODER SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect front power window switch (passenger side) connector and front power window motor (passenger side) connector.
- Check continuity between front power window switch (passenger side) harness connector and front power window motor (passenger side) harness connector.
Front power window switch (passenger side)
Front power window motor (passenger side)
Continuity
Connector
Terminal
Connector
Terminal
D25
12
D27
5
Existed
15
6
- Check continuity between front power window switch (passenger side) harness connector and ground.
Front power window switch (passenger side)
(-)
Continuity
Connector
Terminal
D25
12
Ground
Not existed
15
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace harness.
- CHECK ENCODER POWER SUPPLY CIRCUIT 1
- Connect front power window switch (passenger side) connector.
- Turn ignition switch ON.
- Check voltage between front power window motor (passenger side) harness connector and ground.
(+)
(-)
Voltage (V)
(Approx.)
Front power window motor (passenger side)
Connector
Terminal
D27
2
Ground
12
Is the inspection result normal?
YES
GO TO 5.
NO
GO TO 4.
- CHECK ENCODER POWER SUPPLY CIRCUIT 2
- Turn ignition switch OFF.
- Disconnect front power window switch (passenger side) connector.
- Check continuity between front power window switch (passenger side) harness connector and front power window motor (passenger side) harness connector.
Front power window switch (passenger side)
Front power window motor (passenger side)
Continuity
Connector
Terminal
Connector
Terminal
D25
4
D27
2
Existed
- Check continuity between front power window switch (passenger side) harness connector and ground.
Front power window switch (passenger side)
(-)
Continuity
Connector
Terminal
D25
4
Ground
Not existed
Is the inspection result normal?
YES
Replace front power window switch (passenger side). Refer to FRONT POWER WINDOW SWITCH (PASSENGER SIDE) : Removal & Installation .
NO
Repair or replace harness.
- CHECK GROUND CIRCUIT 1
- Turn ignition switch OFF.
- Check continuity between front power window motor (passenger side) harness connector and ground.
Front power window motor (passenger side)
(-)
Continuity
Connector
Terminal
D27
4
Ground
Existed
Is the inspection result normal?
YES
Replace front power window motor (passenger side). Refer to FRONT REGULATOR : Disassembly & Assembly .
NO
GO TO 6.
- CHECK GROUND CIRCUIT 2
- Disconnect front power window switch (passenger side) connector.
- Check continuity between front power window switch (passenger side) harness connector and front power window motor (passenger side) harness connector.
Front power window switch (passenger side)
Front power window motor (passenger side)
Continuity
Connector
Terminal
Connector
Terminal
D25
3
D27
4
Existed
Is the inspection result normal?
YES
GO TO 7.
NO
Repair or replace harness.
- CHECK GROUND CIRCUIT 3
Check continuity between front power window switch (passenger side) harness connector and ground.
Front power window switch (passenger side)
Continuity
Connector
Terminal
D25
3
11
Existed
Is the inspection result normal?
YES
Check intermittent incident. Refer to Inspection .
NO
Replace front power window switch (passenger side). Refer to FRONT POWER WINDOW SWITCH (PASSENGER SIDE) : Removal & Installation .