Unlock Sensor

UNLOCK SENSOR





Description
Detects door lock condition of driver door.




Component Function Check
1.CHECK FUNCTION
With CONSULT-III
Check unlock sensor UNLK SEN � DR in "DATA MONITOR" mode.





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




Diagnosis Procedure
Regarding Wiring Diagram information, [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 M18 (A) terminal 27 and front door lock assembly LH connector (B) terminal 3.





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. Service and Repair.
5.CHECK UNLOCK SENSOR
SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 6
NO - Replace front door lock assembly LH. Front Door Lock.
6.CHECK 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. Front Door Lock.