Initial Inspection and Diagnostic Overview

1. Verify the customer concern by operating the backup lamps.
2. Visually inspect the components of the backup lamp system.

Mechanical
- Transmission range switch/sensor.

Electrical
- Blown fuse:
+ 15 A METER.
- Damaged backup lamp miniature bulb.
- Damaged wiring harness.
- Loose or corroded connections.

3. Check the wiring harness for obvious signs of shorts, opens, bad connections, or damage.
4. If fault is not visually evident, determine the symptom and proceed to the Symptom Chart. Symptom Related Diagnostic Procedures