1. Turn the ignition switch to the ON position.
2. Automatic transmissions - Depress the brake pedal and move the control lever to the REVERSE position. Manual transmissions - Depress the clutch pedal and place the shifter into REVERSE position.

Both of the backup lamps illuminate.

Backup Lamps Inoperative

Automatic transmissions - depress brake pedal and move the control lever to the PARK position. Manual transmissions - depress the clutch pedal and and place the shifter into NETURAL.

Both of the backup lamps turn OFF.

Backup Lamps Always On

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.