Diagnosis Procedure
- CHECK ENCODER SIGNAL
- Ignition switch ON.
- Check signal between main power window and door lock/unlock switch harness connector and ground with oscilloscope.
(+)
(-)
Signal
(Reference value)
Main power window and door lock/unlock switch
Connector
Terminal
D17
4
Ground
Refer to following signal
5
Is the inspection result normal?
YES
GO TO 7.
NO
GO TO 2.
- CHECK ENCORDER SIGNAL CIRCUIT
- Ignition switch OFF.
- Disconnect main power window and door lock/unlock switch connector and front power window motor LH connector.
- Check continuity between main power window and door lock/unlock switch harness connector and front power window motor LH harness connector.
Main power window and door lock/unlock switch
Front power window motor LH
Continuity
Connector
Terminal
Connector
Terminal
D17
4
D10
6
Yes
5
4
- Check continuity between main power window and door lock/unlock switch harness connector and ground.
Main power window and door lock/unlock switch
--
Continuity
Connector
Terminal
D17
4
Ground
No
5
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace harness.
- CHECK ENCORDER POWER SUPPLY CIRCUIT
- Connect main power window and door lock/unlock switch connector.
- Ignition switch ON.
- Check voltage between front power window motor LH harness connector and ground.
(+)
(-)
Voltage
(Approx.)
Front power window motor LH
Connector
Terminal
D10
5
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 4.
NO
GO TO 5.
- CHECK GROUND CIRCUIT
- Ignition switch OFF.
- Check continuity between front power window motor LH harness connector and ground.
Front power window motor LH
--
Continuity
Connector
Terminal
D10
3
Ground
Yes
Is the inspection result normal?
YES
GO TO 7.
NO
GO TO 6.
- CHECK HARNESS CONTINUITY 1
- Ignition switch OFF.
- Disconnect main power window and door lock/unlock switch connector.
- Check continuity between main power window and door lock/unlock switch harness connector and front power window motor LH harness connector.
Main power window and door lock/unlock switch
Front power window motor LH
Continuity
Connector
Terminal
Connector
Terminal
D17
14
D10
5
Yes
- Check continuity between main power window and door lock/unlock switch harness connector and ground.
Main power window and door lock/unlock switch
--
Continuity
Connector
Terminal
D17
14
Ground
No
Is the inspection result normal?
YES
Replace main power window and door lock/unlock switch. Refer to Removal and Installation .
NO
Repair or replace harness.
- CHECK HARNESS CONTINUITY 2
- Disconnect main power window and door lock/unlock switch connector.
- Check continuity between main power window and door lock/unlock switch harness connector and front power window motor LH harness connector.
Main power window and door lock/unlock switch
Front power window motor LH
Continuity
Connector
Terminal
Connector
Terminal
D17
12
D10
3
Yes
Is the inspection result normal?
YES
Replace main power window and door lock/unlock switch. Refer to Removal and Installation .
NO
Repair or replace harness.
- CHECK INTERMITTENT INCIDENT
Refer to Inspection Procedure .
Inspection End.