Diagnosis Procedure

ENCODER


Description

The automatic back door control unit receives the pulse signals from encoders A and B that occurred due to synchronization with the back door operation. The automatic back door control unit calculates the back door position, operation direction, and operation speed according to the received pulse signals.





ENCODER


Diagnosis Procedure

1.CHECK ENCODER POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect automatic back door unit connector.
3. Check voltage between automatic back door unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.CHECK ENCODER POWER SUPPLY CIRCUIT
1. Disconnect automatic back door control unit connector.
2. Check continuity between automatic back door control unit harness connector and automatic back door unit harness connector.





3. Check continuity between automatic back door control unit harness connector and ground.





Is the inspection result normal?
YES - Replace automatic back door control unit. Removal And Installation.
NO - Repair or replace harness.
3.CHECK ENCODER GROUND CIRCUIT
1. Disconnect automatic back door unit connector.
2. Check continuity between automatic back door control unit harness connector and automatic back door unit harness connector.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace harness.
4.CHECK ENCODER SIGNAL CIRCUIT
1. Check continuity between automatic back door control unit harness connector and automatic back door unit harness connector.





2. Check continuity between automatic back door control unit harness connector and ground.





Is the inspection result normal?
YES - Replace automatic back door unit. Removal And Installation.
NO - Repair or replace harness.