Diagnosis Procedure
INTERIOR ROOM LAMP CONTROL CIRCUIT
Description
Controls the following interior room lamps (ground side) by PWM signal
- Puddle lamps (if equipped)
- Front room/map lamp assembly
- Personal lamp 2nd row
- Personal lamp 3rd row
NOTE:
PWM signal control period is approximately 250 Hz (in the gradual brightening/dimming).
INTERIOR ROOM LAMP CONTROL CIRCUIT
Diagnosis Procedure
Regarding Wiring Diagram information, Interior Room Lamp Control System.
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 (if equipped with puddle lamps) 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. Service and Repair. If NG, replace interior room lamp. Service and Repair or Removal And Installation.
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 (if equipped with puddle lamps) 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. Service and Repair. If NG, replace interior room lamp. Service and Repair or Removal And Installation.
NO - Repair the harness or connectors.