Interior Room Lamp Power Supply Circuit

INTERIOR ROOM LAMP POWER SUPPLY CIRCUIT





Description
Provides the interior room lamp power supply. Also cuts the power supply when the interior room lamp battery saver activating.




Component Function Check
1.CHECK INTERIOR ROOM LAMP POWER SUPPLY FUNCTION
CONSULT-III ACTIVE TEST
1. Turn ignition switch ON.
2. Turn each interior room lamp ON.
- Map lamp
- Room lamp
- Luggage room lamp
3. Select "BATTERY SAVER" of BCM (BATTERY SAVER) active test item.
4. With operating the test items, check that each interior room lamp is turned ON/OFF.






Is the interior room lamp turned ON/OFF?
YES - Interior room lamp power supply circuit is normal.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK INTERIOR ROOM LAMP POWER SUPPLY OUTPUT
CONSULT-III ACTIVE TEST
1. Turn ignition switch ON.
2. Select "BATTERY SAVER" of BCM (BATTERY SAVER) active test item.
3. With operating the test item, check voltage between BCM harness connector and ground.






Is the measurement value normal?
YES - GO TO 2.
NO - Replace BCM. Exploded View.
2.CHECK INTERIOR ROOM LAMP POWER SUPPLY OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the following connectors.
- Map lamp
- Room lamp
- Luggage room lamp
3. Check continuity between BCM harness connector and each interior room lamp harness connector.






Does continuity exist?
YES - GO TO 3.
NO - Repair the harnesses or connectors.
3.CHECK INTERIOR ROOM LAMP POWER SUPPLY SHORT CIRCUIT
Check continuity between BCM harness connector and ground.






Does continuity exist?
YES - Repair the harnesses or connectors.
NO - Check that each interior room lamp has no internal short circuit.