Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems in Wiring Systems.

1. Turn the ignition to the ON position.
2. Turn the headlamp switch to the ON position.
3. Turn the I/P lamp dimmer switch to a high position.

Are the I/P lamps on?

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

Go to Step 3

1. Disconnect the I/P lamp dimmer switch.
2. Using a test lamp connected to a known good ground, probe the park lamp switch ON circuit at the I/P lamp dimmer switch.

Does the test lamp illuminate?

Go to Step 5

Go to Step 4

Repair a poor connection or an open in the park lamp switch ON circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 9

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Using a test lamp, probe the I/P lamp dimmer switch between the park lamp ON circuit and the I/P dimmer switch control circuit.

Does the test lamp illuminate?

Go to Step 6

Go to Step 7

Replace the I/P lamp dimmer switch.

Refer to Instrument Panel Multifunction Switch Assembly Replacement in Instrument Panel, Gauges, and Console.

Did you complete the repair?

Go to Step 9

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Inspect the I/P dimmer switch harness connect for a poor connection. Repair if necessary.

Did you complete the repair?

Go to Step 9

Go to Step 8

Repair a poor connection, short to ground or an open in the I/P dimmer switch control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 9

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Operate the system in order to verify the repair.

Did you correct the condition?

Go to Diagnostic System Check - Lighting Systems in Wiring Systems.

Go to Step 2