Diagnosis Procedure

TRUNK ROOM LAMP SWITCH


Description

Detects trunk open/close condition.





TRUNK ROOM LAMP SWITCH


Diagnosis Procedure

Regarding Wiring Diagram information, Electrical Diagrams.
1.CHECK TRUNK LAMP SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.





2. Check voltage between BCM connector and ground using an oscilloscope.







Is the inspection result normal?
YES - GO TO 4
NO - GO TO 2
2.CHECK TRUNK LAMP SWITCH CIRCUIT
1. Disconnect BCM and trunk lamp switch and trunk release solenoid connector.





2. Check continuity between BCM connector M21 (A) terminal 130 and trunk lamp switch and trunk release solenoid connector B28
(B) terminal 1.





3. Check continuity between BCM connector M21 (A) terminal 130 and ground.





Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace harness between BCM and trunk lamp switch and trunk release solenoid.
3.CHECK TRUNK LAMP SWITCH GROUND CIRCUIT





Check continuity between trunk lid lock assembly connector and ground.





Is the inspection result normal?
YES - GO TO 4
NO - Repair or replace trunk lamp switch and trunk release solenoid ground circuit.
4.CHECK BCM OUTPUT SIGNAL
1. Insure trunk remains closed during this step.
2. Connect BCM connector.





3. Check voltage between BCM connector and ground.





Is the inspection result normal?
YES - GO TO 5
NO - Replace BCM. Body Control System.
5.CHECK TRUNK ROOM LAMP SWITCH
Component Inspection.
Is the inspection result normal?
YES - GO TO 6
NO - Replace trunk lamp switch and trunk release solenoid.
6.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- Inspection End.