Encoder Circuit

ENCODER CIRCUIT

Description

Detects condition of the front power window motor (driver side) operation and transmits to power window main switch as pulse signal.


Component Function Check


1. CHECK ENCODER OPERATION

Check front driver side door glass perform AUTO open/close operation normally when power window main switch.
Is the inspection result normal?
YES- Encoder operation is OK.
NO- Refer to "Diagnosis Procedure"


Diagnosis Procedure


Encoder Circuit Check


1. CHECK ENCODER OPERATION

1.Turn ignition 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 ignition 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 CIRCUIT

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





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

4. CHECK GROUND CIRCUIT

1.Turn ignition 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.

5. CHECK HARNESS CONTINUITY 1

1.Turn ignition switch OFF.
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 power window main switch. Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace harness.

6. CHECK HARNESS CONTINUITY 2

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.





Is the inspection result normal?
YES- Replace power window main switch. Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace harness.

7. CHECK INTERMITTENT INCIDENT

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