Fog Lamps Always On Front
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics | |||
1 | Did you perform the Lighting System Diagnostic System Check? | Go to Step 2 | |
2 |
Are the front fog lamps off? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Remove front fog lamp relay 16. Do the front fog lamps turn off? | Go to Step 4 | Go to Step 6 |
4 | Connect a test lamp between the coil side feed of the front fog lamp relay and the control circuit of the front fog lamp relay. Does the test lamp illuminate? | Go to Step 5 | Go to Step 8 |
5 | Test for a short to battery voltage in the control circuit of the front fog lamp relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 10 | Go to Step 7 |
6 | Test for a short to battery voltage in the front fog lamp supply voltage circuit and the front fog lamp indicator supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 10 | Go to Step 9 |
7 | Replace the front fog lamp switch. Refer to Fog Lamp Switch Replacement . Has the repair been made? | Go to Step 10 | -- |
8 | Replace the front fog lamp relay 16. Has the repair been made? | Go to Step 10 | -- |
9 | Replace the underhood junction block. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems. Has the repair been made? | Go to Step 10 | -- |
10 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
Fog Lamps Always On Rear
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics | |||
1 | Did you perform the Lighting System Diagnostic System Check? | Go to Step 2 | |
2 |
Are the rear fog lamps off? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Remove the rear fog lamp relay. Do the rear fog lamps turn off? | Go to Step 4 | Go to Step 6 |
4 | Connect a test lamp between the coil side feed of the rear fog lamp relay and the control circuit of the rear fog lamp relay. Does the test lamp illuminate? | Go to Step 5 | Go to Step 8 |
5 | Test for a short to ground in the control circuit of the rear fog lamp relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 7 |
6 | Repair a short to battery voltage in the rear fog lamp supply voltage circuit or the rear fog lamp indicator supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | -- |
7 | Replace the Body Control Module (BCM). Refer to Body Control Module Replacement . Has the repair been made? | Go to Step 9 | -- |
8 | Replace the rear fog lamp relay. Has the repair been made? | Go to Step 9 | -- |
9 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
