Diagnosis Procedure (With LH Anti-Pinch Only)

KEY CYLINDER SWITCH


Description

For vehicles equipped with LH and RH anti-pinch system, the main power window and door lock/unlock switch detects condition of the door key cylinder switch and transmits to BCM as the LOCK or UNLOCK signal.
For vehicles equipped with LH anti-pinch system only, the front door lock assembly LH (key cylinder switch) transmits the LOCK or UNLOCK signal directly to the BCM.





KEY CYLINDER SWITCH


Diagnosis Procedure (With LH Anti-Pinch Only)

Regarding Wiring Diagram information, Vehicle Security System.
1.CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
1. Turn ignition switch ON.





2. Check voltage between BCM connector and ground.





Is the inspection result normal?
YES - Replace main power window and door lock/unlock switch. LH Only Window Anti-Pinch.
NO - GO TO 2
2.CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front door lock assembly LH (key cylinder switch) connector.





3. Check continuity between front door lock assembly LH (key cylinder switch) connector and ground.





Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace harness.
3.CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT
1. Disconnect BCM connector M18.





2. Check continuity between front door lock assembly LH (key cylinder switch) connector D14 terminals 5, 6 and BCM connector
M18 (B) terminals 34, 35.





3. Check continuity between front door lock assembly LH (key cylinder switch) connector D14 (A) terminals 5, 6 and ground.





Is the inspection result normal?
YES - GO TO 4
NO - Repair or replace harness.
4.CHECK DOOR KEY CYLINDER SWITCH
Check door key cylinder switch. Component Inspection.
Is the inspection result normal?
YES - Check intermittent incident. Intermittent Incident.
NO - Replace front door lock assembly LH (key cylinder switch). Front Door Lock Front Door Lock.