For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 |

1. Turn the headlamp switch to the OFF position on the headlamp/instrument panel (IP) dimmer switch.
2. Turn the fog lamp switch to the OFF position.
3. Use a test lamp in order to backprobe the rear window wiper/washer and multi-function switch connector C3 terminal E to ground.

Did the test lamp light?

--

Go to Step 2

Go to Step 5

2 |

1. Disconnect the rear window wiper/washer and multi-function switch connector C3.
2. Use a test lamp in order to backprobe between the rear window wiper/washer and multi-function switch connector C3 terminal E and ground.

Did the test lamp light?

--

Go to Step 3

Go to Step 4

3 |

1. Disconnect the underhood accessory junction block connector C2.
2. Use a test lamp in order to probe the underhood accessory junction block connector C2 terminal E5 and ground.

Did the test lamp light?

--

Go to Step 9

Go to Step 5

4 |

1. Replace the rear window wiper/washer and multi-function switch. Refer to Multifunction Switch Assembly Replacement - Instrument Panel .
2. Inspect the system.

Is the repair complete?

--

Go to Fog Lights System Check

--

5 | Replace the fog lamp relay with a known good relay. Did the fog lamps turn off? | -- | Go to Step 10 | Go to Step 6
6 | Disconnect the underhood accessory junction block connector C3. Does one fog lamp stay on and the other fog lamp turn off? | -- | Go to Step 7 | Go to Step 8
7 | Repair a short to B+ in CKT 34 for the affected fog lamp. Is the repair complete? | -- | Go to Fog Lights System Check | --
8 | Replace the underhood accessory junction block. Refer to Relay/Fuse Center Replacement in Wiring System. Is the repair complete? | -- | Go to Fog Lights System Check | --
9 | Repair a short to B+ in CKT 317. Is the repair complete? | -- | Go to Fog Lights System Check | --
10 | Replace the fog lamp relay. Is the repair complete? | -- | Go to Fog Lights System Check | --