Step  | Action  | Value(s)  | Yes  | No  | 
|---|---|---|---|---|
1  | Did you perform the Lighting System Diagnostic System Check?  | --  | Go to Step 2  | |
2  | 
 Are the courtesy lamps on?  | --  | Go to Testing for Intermittent Conditions and Poor Connections  | Go to Step 3  | 
3  | 
 Does the test lamp illuminate?  | --  | Go to Step 4  | Go to Step 5  | 
4  | Replace the headlamp switch. Refer to Headlamp Switch Replacement in Instrument Panel, Gauges, and Console. Did you complete the repair?  | --  | Go to Step 8  | --  | 
5  | Using a test lamp connected to a known good ground, probe the dome lamp switched output circuit at the headlamp switch. Does the test lamp illuminate?  | --  | Go to Step 6  | Go to Step 7  | 
6  | Repair a poor connection or an open the dome lamp ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?  | --  | Go to Step 10  | --  | 
7  | Inspect for a poor connection or an open in the dome lamp switched output circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you locate a poor connection or an open in the circuit?  | --  | Go to Step 8  | Go to Step 9  | 
8  | Repair a poor connection or an open in the dome lamp switched output circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair?  | --  | Go to Step 10  | --  | 
9  | 
 Important: Perform the setup procedure for the Body Control Module. Replace the Body Control Module. Refer to Body Control Module Replacement in Body Control Systems. Did you complete the repair?  | --  | Go to Step 10  | --  | 
10  | Operate the system in order to verify the repair. Did you correct the condition?  | --  | Go to Step 2  |