Unlock Sensor

UNLOCK SENSOR

Description

Detects door lock condition of driver door.


Component Function Check


1. CHECK FUNCTION

Check unlock sensor ("UNLK SEN -DR") in "Data Monitor" mode.





Is the inspection result normal?
YES- Unlock sensor is OK.
NO- Refer to "Diagnosis Procedure" .


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. Refer to "Removal and Installation" Removal and Installation.
NO- Repair or replace harness.

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 harness.

4. CHECK UNLOCK SENSOR

Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 5.
NO- Replace front door lock assembly (driver side). Refer to "DOOR LOCK : Removal and Installation" Removal and Installation.

5. CHECK INTERMITTENT INCIDENT

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


Component Inspection


1. CHECK UNLOCK SENSOR

1.Turn ignition switch OFF.
2.Disconnect front door lock assembly (driver side) connector.
3.Check front door lock assembly (driver side) terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace front lock assembly (driver side). Refer to "DOOR LOCK : Removal and Installation" Removal and Installation.