Trunk Room Lamp Switch Circuit

TRUNK ROOM LAMP SWITCH CIRCUIT





Description
Transmits trunk room lamp switch signal to trunk closure control unit.




Component Function Check
1.CHECK FUNCTION
1. Turn ignition switch OFF.
2. Check that trunk lid auto closure system operates normally when trunk lid is closed.
Is the inspection result normal?
YES - Trunk room lamp switch circuit is OK.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK TRUNK ROOM LAMP SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect trunk closure control unit connector.
3. Check signal between trunk closure control unit harness connector and ground using oscilloscope.





Is the inspection result normal?
YES - Trunk room lamp switch circuit is OK.
NO - GO TO 2.
2.CHECK TRUNK ROOM LAMP SWITCH SIGNAL CIRCUIT
1. Disconnect BCM connector, trunk room lamp switch connector and retractable hard top control unit connector
2. Check continuity between trunk room lamp switch harness connector and trunk closure control unit harness connector.





3. Check continuity between trunk closure control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace harness.
3.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END