Did you perform the Lighting Systems Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Lighting Systems

1. Install a scan tool.
2. Turn the ignition ON, with the engine OFF.
3. Turn ON the parklamps.
4. With a scan tool, observe the park lamp input parameter in the DIM data list.

Does the park lamp input parameter show ON?

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Go to Step 3

Go to Step 5

With a scan tool, observe the incandescent dim #1 output parameter.

Does the incandescent dim #1 output parameter show within the specified range?

15-96%

Go to Step 4

Go to Step 6

Repair an open or high resistance in the incandescent dimming output circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

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Go to Step 7

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Repair an open or high resistance in the park lamp input circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

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Go to Step 7

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Replace the dash integration module (DIM). Refer to Dash Integration Module Replacement in Body Control System.

Did you complete the replacement?

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Go to Step 7

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Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2