Fog Lamps Always On Front
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Fog Lights Schematics DEFINITION: Front fog lamps are always on, or the front fog lamps are on with the fog lamp switch in the OFF position and park lamps on. | |||
1 | Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Are the fog lamps illuminated? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
3 | Remove the fog lamp relay. Are the fog lamps illuminated? | Go to Step 7 | Go to Step 4 |
4 | Probe the control circuit of the fog lamp relay connector with a test lamp that is connected to a good ground. Does the test lamp illuminate? | Go to Step 5 | Go to Step 10 |
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 9 |
6 | Test the fog lamp relay control circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 8 |
7 | Test the fog lamp supply voltage circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | -- |
8 | Replace the junction block - underhood. Refer to Underhood Electrical Center or Junction Block Replacement . Is the repair complete? | Go to Step 11 | -- |
9 |
Is the repair complete? | Go to Step 11 | -- |
10 | Replace the fog lamp relay. Is the repair complete? | Go to Step 11 | -- |
11 |
Do the fog lamps operate properly? | System OK | Go to Step 2 |
Fog Lamps Always On Rear
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Fog Lights Schematics DEFINITION: The rear fog lamps are on at all times or the rear fog lamps are on at all times with the headlamps on. | |||
1 | Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 | Turn the headlamp switch to the HEAD position. Are the rear fog lamps ON? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
3 | Disconnect the rear fog lamp relay. Are the rear fog lamps still on? | Go to Step 10 | Go to Step 4 |
4 | Probe the control circuit of the rear fog lamp relay connector with a test lamp that is connected to battery voltage. Does the test lamp illuminate? | Go to Step 5 | Go to Step 11 |
5 |
Does the test lamp illuminate? | Go to Step 9 | Go to Step 6 |
6 | Probe the fog lamp switch signal circuit of the rear fog lamp module connector with a test lamp that is connected to battery voltage. Does the test lamp illuminate? | Go to Step 7 | Go to Step 13 |
7 |
Does the test lamp illuminate? | Go to Step 8 | Go to Step 12 |
8 | Repair a short to ground in the signal circuit of the rear fog lamp switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | -- |
9 | Repair 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 complete the repair? | Go to Step 14 | -- |
10 | Repair the short to voltage in the supply voltage circuit of the rear fog lamps. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | -- |
11 | Replace the rear fog lamp relay. Did you complete the repair? | Go to Step 14 | -- |
12 | Replace the rear window wiper/washer and multifunction switch. Refer to Multifunction Switch Assembly Replacement - Instrument Panel . Did you complete the repair? | Go to Step 14 | -- |
13 | Replace the rear fog lamp module. Did you complete the repair? | Go to Step 14 | -- |
14 |
Do the rear fog lamps operate properly? | System OK | Go to Step 2 |
