Step | Action | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Fog Lights Schematics Connector End View Reference: Lighting Systems Connector End Views or Body Control System Connector End Views | |||||||||
1 | Did you perform the Lighting Systems Diagnostic System Check? | Go to Step 2 | |||||||
2 | Verify that the rear fog lamps are inoperative. Do the rear fog lamps operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | ||||||
3 | Is only one rear 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 Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 5 | ||||||
5 | Test the ground circuit of the inoperative lamp for a high resistance or an open. Did you find and correct the condition? | Go to Step 18 | Go to Step 14 | ||||||
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 SEO 1 fuse. Is the fuse open? | Go to Step 13 | Go to Step 8 | ||||||
8 |
Was a ground signal present? | Go to Step 11 | Go to Step 9 | ||||||
9 | Test for an open, high resistance, or short to voltage in the following circuits:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct a condition? | Go to Step 18 | Go to Step 10 | ||||||
10 |
Was a ground signal present? | Go to Step 17 | Go to Step 12 | ||||||
11 | Test for an open or high resistance in the rear fog lamp supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct a condition? | Go to Step 18 | Go to Step 16 | ||||||
12 | Inspect for poor connections at the harness connector of the Body Control Module (BCM). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 15 | ||||||
13 | Repair the fog lamp supply circuit of the inoperative lamp for a short to ground. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 18 | -- | ||||||
14 | Repair the fog lamp supply circuit of the inoperative lamp. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 18 | -- | ||||||
15 |
Important: Perform the setup procedure for the BCM. Replace the body control module (BCM). Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 18 | -- | ||||||
16 | Replace the rear fog lamp relay. Refer to Relay Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 18 | -- | ||||||
17 | Replace the rear fog lamp switch. Refer to Rear Fog Lamp Switch Replacement . Did you complete the repair? | Go to Step 18 | -- | ||||||
18 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 | ||||||
