Schematic Reference: Exterior Lights Schematics

Connector End View Reference: Power and Grounding Connector End Views in Wiring Systems

Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

1. Turn ON the ignition, with the engine OFF
2. Turn the headlamp switch to the PARK position.

Do all of the park lamps illuminate?

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

Go to Step 3

Is only one lamp inoperative?

Go to Step 8

Go to Step 4

1. Disconnect the headlamp switch.
2. Connect a test lamp between battery positive voltage and the park lamp supply voltage circuit of the park lamp switch at the headlamp connector.

Does the test lamp illuminate?

Go to Step 5

Go to Step 7

Test for a short to ground in the park lamp supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 6

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

Did you find and correct the condition?

Go to Step 10

Go to Step 9

Repair a high resistance or an open in the park lamp supply voltage circuit of the headlamp switch circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 10

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Repair the open or poor connection in the inoperative park lamp voltage supply circuit or ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 10

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Replace the headlamp switch. Refer to Headlamp Switch Replacement .

Did you complete the replacement?

Go to Step 10

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3