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 front fog lamps are inoperative. Do the front fog lamps operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Is only one front fog lamp inoperative? | Go to Step 4 | Go to Step 6 |
4 | Inspect the inoperative bulb and socket for an open filament or poor terminal contact and repair or replace as necessary. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 19 | Go to Step 5 |
5 | Test the ground circuit of the inoperative lamp for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs Did you find and correct the condition? | Go to Step 19 | Go to Step 15 |
6 | With the engine OFF, turn the key to RUN and the headlamp switch to PARK. Do the park lamps illuminate? | Go to Step 7 | |
7 | Inspect the FOG LAMP fuse. Is the fuse open? | Go to Step 14 | Go to Step 8 |
8 |
Was a ground signal present? | Go to Step 11 | Go to Step 9 |
9 | Test the front fog lamp switch signal and ground circuits for an open or high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct a condition? | Go to Step 19 | Go to Step 10 |
10 |
Was a ground signal present? | Go to Step 18 | Go to Step 12 |
11 | Test for an open or high resistance in the front fog lamp supply voltage circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct a condition? | Go to Step 19 | Go to Step 17 |
12 | Test the fog lamp relay control circuit for an open high resistance or a short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 19 | Go to Step 13 |
13 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 19 | Go to Step 16 |
14 | Repair the short to ground in the fog lamp supply circuit of the inoperative lamp. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 19 | -- |
15 | Repair the fog lamp supply circuit of the inoperative lamp. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 19 | -- |
16 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 19 | -- |
17 | Replace the fog lamp relay. Refer to Relay Replacement . Did you complete the repair? | Go to Step 19 | -- |
18 | Replace the front fog lamp switch. Refer to Fog Lamp Switch Replacement . Did you complete the repair? | Go to Step 19 | -- |
19 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
