Diagnosis Procedure
NOTE:
Before performing the diagnosis, check that the following is normal.
- Interior room lamp power supply
- Trunk room lamp bulb
- CHECK TRUNK ROOM LAMP OUTPUT
- Turn ignition switch OFF.
- Remove the trunk room lamp bulb.
- Check continuity between BCM harness connector and ground.
BCM
Ground
Condition
Continuity
Connector
Terminal
M121
49
Trunk lid
Open
Existed
Closed
Not existed
Is the inspection result normal?
YES
GO TO 2.
NO
Continuity exists and remains unchanged: GO TO 3.
NO
Continuity does not exist and remains unchanged: Replace BCM. Refer to Removal and Installation .
- CHECK TRUNK ROOM LAMP OPEN CIRCUIT
- Disconnect BCM connector and trunk room lamp connector.
- Check continuity between BCM harness connector and trunk room lamp harness connector.
BCM
Trunk room lamp
Continuity
Connector
Terminal
Connector
Terminal
M121
49
B47
2
Existed
Is the inspection result normal?
YES
Replace trunk room lamp.
NO
Repair or replace harnesses.
- CHECK TRUNK ROOM LAMP SHORT CIRCUIT
- Disconnect BCM connector and trunk room lamp connector.
- Check continuity between BCM harness connector and ground.
BCM
Ground
Continuity
Connector
Terminal
M121
49
Not existed
Is the inspection result normal?
YES
Replace BCM. Refer to Removal and Installation .
NO
Repair or replace harnesses.