Backup Lamp: Description and Operation

BACKUP LAMPS

The CHMSL/BACKUP fuse in the instrument panel (I/P) fuse block supplies battery positive voltage to the body control module (BCM). When the driver places the gear selection into the REVERSE position, the powertrain control module (PCM) sends a class 2 message to the BCM. The message indicates that the gear selector lever is in the REVERSE position. The BCM then applies battery positive voltage from the CHMSL/BACKUP fuse supply circuit to the backup lamps voltage supply circuit. Ground for the backup lamps is supplied from G302.