Operation CHARM: Car repair manuals for everyone.

Diagnosis Procedure





UNLOCK SENSOR


Description

Detects door lock condition of driver door.





UNLOCK SENSOR


Diagnosis Procedure

1.CHECK BCM OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect front door lock assembly (driver side) connector.
3. Check signal between front door lock assembly (driver side) harness connector and ground with oscilloscope.






Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.CHECK UNLOCK SENSOR CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and front door lock assembly (driver side) harness connector.





3. Check continuity between BCM harness connector and ground.





Is the inspection result normal?
YES - Replace BCM. Removal And Installation.
NO - Repair harness or connector.
3.CHECK UNLOCK SENSOR GROUND CIRCUIT
Check continuity between front door lock assembly (driver side) harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace front door lock assembly (driver side) ground circuit.
4.CHECK UNLOCK SENSOR
Component Inspection.
Is the inspection result normal?
YES - GO TO 5.
NO - Replace front door lock assembly (driver side). Removal And Installation.
5.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END