Backup Lamp: Description and Operation

BACKUP LAMPS

The backup lamps are designed to operate with the ignition in the ON position. Placing the transaxle in the R position closes the backup lamp circuit and turns the backup lamps on.

Manual Transaxle
On vehicles equipped with a manual transaxle, the circuit closes through the backup lamp switch. When the ignition switch is in the RUN or START positions it applies power to the gauge fuse, located in the the Instrument Panel Fuse Block. Current flows from the fuse to Right Instrument Panel Junction Block. Current then flows through SP107 then finally going to the backup lamp switch cavity 2. When the switch is closed it allows voltage to be applied to Right Instrument Panel Junction Block through backup lamp switch cavity 1, which leaves the Right Instrument Panel Junction Block C1 cavity 2. After leaving the Right Instrument Panel Junction Block, current is split through SP302, to the rear combination lamp cavity 2. Ground is finally provided at the rear combination lamp cavity 3.

Automatic Transaxle
On vehicles equipped with an automatic transaxle, the circuit closes through the park neutral position (PNP) switch. When the ignition switch is in the RUN or START positions it applies power to the gauge fuse, located in the the Instrument Panel Fuse Block. Current flows from the fuse to Right Instrument Panel Junction Block. Current then flows through SP107 then finally going to the backup lamp switch cavity 3. When the switch is closed it allows voltage to be applied to Right Instrument Panel Junction Block through backup lamp switch cavity 2, which leaves the Right Instrument Panel Junction Block C1 cavity 2. After leaving the Right Instrument Panel Junction Block, current is split through SP302, to the rear combination lamp cavity 2. Ground is finally provided at the rear combination lamp cavity 3.