Step  | Action  | Value(s)  | Yes  | No  | 
|---|---|---|---|---|
1  | Was the Fog Lights System Check performed?  | --  | Go to Step 2  | Go to Fog Lights System Check  | 
2  | 
 Does the rear fog lamps switch operate properly?  | --  | Go to Step 3  | Go to Step 7  | 
3  | Remove the fog lamp relay from the rear compartment relay center 1. Do the rear fog lamps turn off?  | --  | Go to Step 4  | Go to Step 10  | 
4  | 
 Are the rear fog lamps on?  | --  | Go to Step 5  | Go to Step 6  | 
5  | Inspect CKT 1977 (YEL) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems. Is CKT 1977 OK?  | --  | Go to Step 11  | Go to Step 13  | 
6  | Replace the body control module (PZM). Refer to Body Control Module Replacement in Body Control System. Is the repair complete?  | --  | Go to Fog Lights System Check  | --  | 
7  | Disconnect the headlamp switch connector C1. Do the rear fog lamps turn off?  | --  | Go to Step 8  | Go to Step 9  | 
8  | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Is the repair complete?  | --  | Go to Fog Lights System Check  | --  | 
9  | Inspect CKT 187 (LT BLU) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems. Is CKT 187 OK?  | --  | Go to Step 12  | Go to Step 13  | 
10  | Repair the short to voltage in CKT 122 (RED). Refer to Wiring Repairs in Wiring Systems. Is the repair complete?  | --  | Go to Fog Lights System Check  | --  | 
11  | Replace the rear fog lamp relay. Is the repair complete?  | --  | Go to Fog Lights System Check  | --  | 
12  | Replace the instrument panel cluster (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console. Is the repair complete?  | --  | Go to Fog Lights System Check  | --  | 
13  | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?  | --  | Go to Fog Lights System Check  | --  |