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

Connector End View Reference: Lighting Systems Connector End Views or Body Control System Connector End Views

1

Did you perform the Lighting Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

1. Turn ON the ignition, with the engine OFF.
2. Expose the sunload sensor to a bright light.
3. Place the wiper/washer switch in the OFF position.
4. Place the headlamp switch in the OFF position.
5. Place the fog lamp switch in the OFF position.
6. Wait more than 6 seconds.

Does the HEADLAMPS SUGGESTED message display on the instrument panel cluster (IPC)?

Go to Step 3

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

1. Install a scan tool.
2. Observe the Photocell Status in the Climate Control Panel (CCP) Inputs data list.

Does the scan tool display Light?

Go to Step 4

Go to Twilight Sentinel Inoperative

Inspect for poor connections at the harness connector of the dash integration module (DIM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 6

Go to Step 5

Important:: Perform the setup procedure for the DIM.

Replace the DIM. Refer to Dash Integration Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 6

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2