Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Fog Lights Schematics Connector End View Reference: Lighting Systems Connector End Views or Data Communication Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Verify that the rear fog lamps are always on. Do the rear fog lamps operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | 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 . 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 . Did you complete the repair? | Go to Step 12 | -- |
9 | Replace the BCM. Refer to Control Module References 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 . 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 |
