Step  | Action  | Value(s)  | Yes  | No  | 
|---|---|---|---|---|
1  | 
 Does the scan tool show any DTCs?  | --  | Go to Diagnostic System Check - Body Control System in Body Control System  | |
2  | Turn the park lamps ON. Do the park lamps function properly?  | --  | Go to Park Lamps Inoperative  | |
3  | Disconnect the headlamp and panel dimmer switch. Are the instrument panel lamps lit?  | --  | ||
4  | Replace the headlamp and panel dimmer switch. Refer to Headlamp Switch Replacement . Is the repair complete?  | --  | System OK  | --  | 
5  | Remove the ILLUM fuse. Are the instrument panel lamps lit?  | --  | ||
6  | Locate and repair CKT 8 (GRY) for a short to voltage. Is the repair complete?  | --  | System OK  | --  | 
7  | Locate and repair CKT 44 (DK GRN) for a short to voltage. Is the repair complete?  | --  | System OK  | --  |