Trunk Key Cylinder Switch

TRUNK KEY CYLINDER SWITCH





Component Function Check
1.CHECK FUNCTION
1. Select "KEY CYL SW-TR" in "Data Monitor" mode of "THEFT ALM" of "BCM" using CONSULT-III.
2. Check the indication under the following conditions.





Is the inspection result normal?
YES - Trunk key cylinder switch is OK.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK TRUNK KEY CYLINDER SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect trunk key cylinder switch connector.
3. Check voltage between trunk key cylinder switch harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - GO TO 2.
2.CHECK TRUNK KEY CYLINDER SWITCH SIGNAL CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and trunk key cylinder switch harness connector.





3. Check continuity between BCM harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace harness.
3.REPLACE BCM
1. Replace BCM. Service and Repair.
2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
- INSPECTION END
4.CHECK TRUNK KEY CYLINDER SWITCH GROUND CIRCUIT
Check continuity between trunk key cylinder switch harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair or replace harness.
5.CHECK TRUNK KEY CYLINDER SWITCH
SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 6.
NO - Replace trunk key cylinder switch.
6.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END




Component Inspection
1.CHECK TRUNK KEY CYLINDER SWITCH
1. Turn ignition switch OFF.
2. Disconnect trunk key cylinder switch connector.
3. Check continuity between trunk key cylinder switch terminals.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace trunk key cylinder switch.