Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

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

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

Do the I/P lamps dim?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Disconnect the headlamp switch.

Are the I/P lamps on?

Go to Step 4

Go to Step 5

Repair a short to B+ in the I/P dimming control circuit.

Did you complete the repair?

Go to Step 6

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Replace the headlamp switch.

Refer to Headlamp Switch Replacement .

Did you complete the repair?

Go to Step 6

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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

Go to Step 2