Schematic Reference: Fog Lights Schematics

Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

1. Turn ON the ignition, with the engine OFF.
2. Turn the headlamp switch to the HEAD position.
3. Turn the headlamp dimmer switch to the LOW beam position.
4. Place the fog lamps switch in the ON position.

Do the fog lamps illuminate?

Go to Step 3

Go to Fog Lamps Inoperative

Observe the fog lamp indicator of the Instrument Panel Cluster (IPC).

Does the Instrument Panel Cluster (IPC) fog lamp indicator illuminate?

Go to Step 4

Go to Step 5

Observe the fog lamp on indicator of the fog lamp switch.

Does the fog lamp on indicator of the fog lamp switch illuminate?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 6

1. Turn OFF the ignition.
2. Disconnect the Instrument Panel Cluster (IPC) connector.
3. Turn ON the ignition, with the engine OFF.
4. Probe the fog lamps supply voltage circuit of the Instrument Panel Cluster (IPC) with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 8

Go to Step 12

Backprobe the fog lamps supply voltage circuit of the fog lamp switch connector with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 7

Go to Step 10

1. Disconnect the fog lamp switch connector.
2. Probe the ground circuit of the fog lamp switch connector with a test lamp that is connected to battery voltage.

Does the test lamp illuminate?

Go to Step 9

Go to Step 11

Inspect for poor connections at the harness connector of the instrument panel cluster. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 13

Inspect for poor connections at the harness connector of the fog lamp switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 14

Repair the open or a high resistance in the fog lamp supply voltage circuit of the fog lamp switch. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 15

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Repair an open or a high resistance in the ground circuit of the fog lamp switch. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 15

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Repair the open or a high resistance in the fog lamp supply voltage circuit of the Instrument Panel Cluster (IPC). Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 15

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Important: Perform the set up procedure for the Instrument Panel Cluster (IPC).

Replace the Instrument Panel Cluster (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement and the set up procedure?

Go to Step 15

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Replace the fog lamp switch. Refer to Instrument Panel Multifunction Switch Assembly Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement?

Go to Step 15

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2