Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the Lighting Systems Diagnostic System Check? | Go to Step 2 | |
2 |
Does the scan tool display OFF status? | Go to Step 3 | Go to Step 6 |
3 |
Did the fog lamps turn OFF? | Go to Step 4 | Go to Step 9 |
4 | Connect a test lamp between the control circuit of the fog lamp relay and the coil side feed circuit of the fog lamp relay. Does the test lamp illuminate? | Go to Step 5 | Go to Step 10 |
5 | Test the control circuit of the fog lamp relay for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 17 | Go to Step 7 |
6 | With a scan tool, observe the fog lamp switch status in the IPM Non-HVAC data list. Does the scan tool display OFF status? | Go to Step 7 | Go to Step 12 |
7 | Inspect for poor connections at the dash integration module (DIM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 17 | Go to Step 8 |
8 | Replace the dash integration module (DIM). Refer to Dash Integration Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 17 | -- |
9 | Repair the short to power in the fog lamp power feed circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 17 | -- |
10 | Inspect for poor connections at the fog lamp relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 17 | Go to Step 11 |
11 | Replace the fog lamp relay. Did you complete the replacement? | Go to Step 17 | -- |
12 |
Does the scan tool display OFF status? | Go to Step 13 | Go to Step 14 |
13 | Replace the headlamp switch. Did you complete the replacement? | Go to Step 17 | -- |
14 | Test the fog lamp switch input circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 17 | Go to Step 15 |
15 | Inspect for poor connections at the instrument panel integration module (IPM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 17 | Go to Step 16 |
16 | Replace the instrument panel integration module (IPM). Refer to Instrument Panel Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 17 | -- |
17 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
