Test C: The Courtesy Lamps Stay On Continuously
PINPOINT TEST C: THE COURTESY LAMPS STAY ON CONTINUOUSLYNormal Operation
The driver door module (DDM) monitors the door ajar switch status for each door. When a door is open, the DDM signals the lighting control module (LCM) to supply power to the courtesy lamps. The courtesy lamps are powered through circuit 53 (BK/LB). The LCM also monitors the dome lamp switch status from the instrument panel dimmer switch through circuit 1034 (BK/WH). When the LCM recognizes that the dome lamps have been requested, the LCM supplies power to the courtesy lamps on circuit 53 (BK/LB).
DTC B1322 (Driver Door Ajar Circuit Short To Ground) - is an on-demand DTC that sets if the DDM detects a short to ground on the driver door ajar circuit 867 (DB).
DTC B1566 (Door Ajar Circuit Short To Ground) - is an on-demand DTC that sets if the DDM detects a short to ground on the passenger door ajar circuit 627 (BK/OG).
DTC B1688 (Lamp Dome Input Circuit Short To Ground) - is an on-demand DTC that sets if the LCM detects a short to ground on the dome lamp input circuit 1034 (BK/WH).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Door ajar switch
- Instrument panel dimmer switch
- DDM
- LCM
C1-C5:
C6-C9:
C10-C12:
