Unlock Sensor

UNLOCK SENSOR

Description

Detects door lock condition of driver door.


Component Function Check


1. CHECK FUNCTION

With CONSULT
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

Regarding Wiring Diagram information, refer to "Wiring Diagram" [1][2]Electrical Diagrams.

1. CHECK UNLOCK SENSOR POWER SUPPLY

Check signal between BCM connector and ground with oscilloscope.





Is the inspection result normal?
YES- GO TO 6
NO- GO TO 2

2. CHECK UNLOCK SENSOR CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect BCM and front door lock assembly LH connector.
3.Check continuity between BCM connector and front door lock assembly LH connector.





4.Check continuity between BCM connector and ground.





Is the inspection result normal?
YES- GO TO 3
NO- Repair or replace harness between BCM and front door lock assembly LH.

3. CHECK UNLOCK SENSOR GROUND CIRCUIT

Check continuity between front door lock assembly LH connector and ground.





Is the inspection result normal?
YES- GO TO 4
NO- Repair or replace harness.

4. CHECK BCM OUTPUT SIGNAL

1.Connect BCM harness connector.
2.Check signal between BCM connector and ground with oscilloscope.





Is the inspection result normal?
YES- GO TO 5
NO- Replace BCM. Refer to "Removal and Installation" Service and Repair

5. CHECK UNLOCK SENSOR

Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 6
NO- Replace front door lock assembly LH. Refer to "FRONT DOOR LOCK : Removal and Installation" Removal And Installation.

6. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- Inspection End.


Component Inspection


1. CHECK UNLOCK SENSOR

Check unlock sensor.





Is the inspection result normal?
YES- Inspection End.
NO- Replace front lock assembly LH. Refer to "FRONT DOOR LOCK : Removal and Installation" Removal And Installation.