Encoder Circuit

ENCODER CIRCUIT

Diagnosis Procedure


1. CHECK ENCODER PULSE SIGNAL

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










Is the inspection result normal?
YES- GO TO 7.
NO- GO TO 2.

2. CHECK ENCODER SIGNAL CIRCUIT

1.Turn power switch OFF.
2.Disconnect power window main switch connector and front power window motor (driver side) connector.
3.Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.





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





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

3. CHECK ENCODER POWER SUPPLY

1.Connect power window main switch connector.
2.Turn power switch ON.
3.Check voltage between front power window motor (driver side) harness connector and ground.





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

4. CHECK ENCODER POWER SUPPLY CIRCUIT

1.Turn power switch OFF.
2.Disconnect power window main switch connector.
3.Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.





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





Is the inspection result normal?
YES- Replace power window main switch.
NO- Repair or replace harness.

5. CHECK ENCODER GROUND CIRCUIT

1.Turn power switch OFF.
2.Check continuity between front power window motor (driver side) harness connector and ground.





Is the inspection result normal?
YES- GO TO 7.
NO- GO TO 6.

6. CHECK ENCODER GROUND CIRCUIT

1.Disconnect power window main switch connector.
2.Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.





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





Is the inspection result normal?
YES- Replace front power window motor (driver side).
NO- Repair or replace harness.

7. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- INSPECTION END