Initial Inspection and Diagnostic Overview

1. The interior lighting system is controlled by a Generic Electronic Module (GEM).
2. Verify the customer concern by operating the interior lamps.
3. Visually inspect for obvious signs of mechanical and electrical damage.

VISUAL INSPECTION CHART

Mechanical
^ Switch(s)

Electrical
^ Fuse(s)
^ Damaged wiring harness
^ Loose or corroded connector(s)
^ Circuitry Damaged bulb(s)

4. If the concern is not visually evident, determine the symptom and proceed to the Symptom Chart. Symptom Related Diagnostic Procedures