Diagnosis Procedure

ENCODER

REAR LH : Diagnosis Procedure


1. CHECK ENCODER SIGNAL

1.Turn ignition switch ON.
2.Check signal between rear power window switch LH harness connector and ground with oscilloscope.










Is the inspection result normal?
YES- Replace rear power window switch LH. Removal And Installation.
NO- GO TO 2.

2. CHECK ENCODER SIGNAL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect rear power window switch LH connector and rear power window motor LH connector.
3.Check continuity between rear power window switch LH harness connector and rear power window motor
LH harness connector.





4.Check continuity rear power window switch LH harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace harness.

3. CHECK ENCODER POWER SUPPLY CIRCUIT 1

1.Connect rear power window switch LH connector.
2.Turn ignition switch ON.
3.Check voltage between rear power window motor LH harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 5.

4. CHECK GROUND CIRCUIT 1

1.Turn ignition switch OFF.
2.Check continuity between rear power window motor LH harness connector and ground.





Is the inspection result normal?
YES- Replace rear power window motor LH. Removal And Installation.
NO- GO TO 6.

5. CHECK ENCODER POWER SUPPLY CIRCUIT2

1.Turn ignition switch OFF.
2.Disconnect rear power window switch LH connector.
3.Check continuity between rear power window switch LH harness connector and rear power window motor
LH harness connector.





4.Check continuity between rear power window switch LH harness connector and ground.





Is the inspection result normal?
YES- Replace rear power window switch LH. Removal And Installation.
NO- Repair or replace harness.

6. CHECK GROUND CIRCUIT 2

1.Disconnect rear power window switch LH harness connector.
2.Check continuity between rear power window switch LH harness connector and rear power window motor
LH harness connector.





3.Check continuity between rear power window switch LH harness connector and ground.





Is the inspection result normal?
YES- Replace rear power window switch LH. Removal And Installation.
NO- Repair or replace harness.