Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Fog Lights Schematics Connector End View Reference: Lighting Systems Connector End Views or Computer/Integrating Systems Connector End Views in Computer/Integrating Systems | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Verify that the rear fog lamp is always on. Does the rear fog lamp operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Use the scan tool to monitor the rear fog lamp switch input with the switch in the OFF position. Does the scan tool indicate that the switch is ON? | Go to Step 4 | Go to Step 5 |
4 | Test for a short to ground in the rear fog lamp switch signal circuit. Did you find and correct the condition? | Go to Step 12 | Go to Step 10 |
5 | Remove the rear fog lamp relay. Does the rear fog lamp turn OFF? | Go to Step 6 | Go to Step 8 |
6 |
Was a ground signal found? | Go to Step 7 | Go to Step 11 |
7 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 9 |
8 | Repair the short to voltage in the rear fog lamp supply voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 12 | -- |
9 | Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 12 | -- |
10 | Replace the rear fog lamp switch. Refer to Headlamp Switch Replacement . Did you complete the repair? | Go to Step 12 | -- |
11 | Replace the rear fog lamp relay. Refer to Relay Replacement in Wiring Systems. Did you complete the repair? | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
