Coupe

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 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, refer to NVIS.
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. Refer to LH Only Anti-Pinch-Coupe.
NO - GO TO 2
2.CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door lock assembly LH (key cylinder switch) connector.





3. Check continuity between 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 door lock assembly LH (key cylinder switch) connector D25 terminals 5, 6 and BCM connector M18
(B) terminals 34, 56.





3. Check continuity between door lock assembly LH (key cylinder switch) connector D10 (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. Refer to Coupe.
Is the inspection result normal?
YES - Check intermittent incident. Refer to Intermittent Incident.
NO - Replace door lock assembly LH (key cylinder switch). Refer to Coupe.