Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics

Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

1. Turn the ignition to the ON position.
2. Turn the headlamp switch to the OFF position.
3. Place the headlamp dimmer switch in the flash to pass position.

Do the high beam headlamps illuminated during flash to pass operation?

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

Go to Step 3

1. Turn the headlamp switch to the HEAD position.
2. Place the headlamp dimmer switch in the high beam position.

Are the high beam headlamps operating properly?

Go to Step 4

Go to Headlamps Inoperative - High Beams

Backprobe the flash to pass ground circuit of the headlamp dimmer switch at connector C201 with a test lamp that is connected to a battery voltage.

Does the test lamp illuminate?

Go to Step 5

Go to Step 6

Inspect for poor connections at the harness connector of the headlamp dimmer 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 8

Go to Step 7

Repair a high resistance or an open in the flash to pass ground circuit of the headlamp dimmer switch . Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 8

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Replace the headlamp dimmer switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column.

Did you complete the repair?

Go to Step 8

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2