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

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

1. Turn ON the ignition, with the engine OFF.
2. Using a scan tool, command the high beam indicator ON.
3. Observe the high beam indicator on the instrument cluster.

Does the indicator illuminate?

Go to Step 3

Go to Step 4

1. Place the headlamp switch in the HEADLAMP position.
2. Place the headlamp dimmer switch in the HIGH position.

Does the indicator illuminate?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 6

Inspect the high beam indicator bulb for an open filament.

Did you find an inoperative bulb?

Go to Step 8

Go to Step 5

Inspect for poor connections at the harness connector of the instrument panel cluster (IPC). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 10

Go to Step 7

Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 10

Go to Step 9

Replace the IPC. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 10

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Replace the high beam indicator bulb. Refer to Instrument Cluster Bulb Replacement .

Did you complete the replacement?

Go to Step 10

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Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

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 2