Diagnosis Procedure

INTERIOR ROOM LAMP CONTROL CIRCUIT


Diagnosis Procedure

1.CHECK INTERIOR ROOM LAMP CONTROL OUTPUT
CONSULT-III





1. Switch the front room/map lamp assembly switch to DOOR.
2. Turn ignition switch ON.
3. Select "INT LAMP" of BCM (INT LAMP) active test item.
4. While operating the test item, check voltage between BCM connector M20 terminal 63 and ground.





Is the inspection result normal?
YES - Interior room lamp control circuit is operating normally.
Fixed ON>>GO TO 3
Fixed OFF>>GO TO 2
2.CHECK INTERIOR ROOM LAMP CONTROL OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, door mirror connectors and front room/map lamp assembly connector.
3. Check continuity between BCM connector M20 (A) terminal 63 and the door mirror connectors (B) and front room/map lamp assembly connector (C).










4. Reconnect the front room/map lamp assembly connector.
5. Check continuity between BCM connector M20 (A) terminal 63





1. and the 2nd and 3rd row personal lamp connectors (B) terminal





Is the inspection result normal?
YES - Check interior room lamps for an open. If OK, replace BCM. Refer to Service and Repair. If NG, replace interior room lamp. Refer to Service and Repair or Door Mirror Assembly.
NO - Repair the harness or connectors.
3.CHECK INTERIOR ROOM LAMP CONTROL SHORT CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, door mirror connectors and
2nd and 3rd row personal lamp connectors.
3. Switch the front room/map lamp assembly switch to ON position.
4. Check continuity between BCM connector M20 terminal 63 and ground.





Is the inspection result normal?
YES - Check interior room lamps for a short circuit. If OK, replace BCM. Refer to Service and Repair. If NG, replace interior room lamp. Refer to Service and Repair or Door Mirror Assembly.
NO - Repair the harness or connectors.