1. Turn the ignition OFF.
2. Connect a scan tool.
3. Turn the ignition to the ON position.
4. Using the scan tool, check for any DTCs in the body control module (BCM).

Does the scan tool show any DTCs ?

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Go to Diagnostic System Check - Body Control System in Body Control System

Go to Step 2

Turn the headlamp switch to the PARK position.

Do the park lamps operate properly?

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Go to Step 3

Go to Park Lamps Inoperative

1. Remove one of the lamps.
2. Connect a test lamp from terminal A of the lamp to ground.

Does the test lamp light?

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Go to Step 5

Go to Step 4

Locate and repair the open in CKT 2409 (BRN) between the right bussed electrical center (RBEC) and splice S200.

Is the repair complete?

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System OK

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Connect a self-powered test lamp from terminal B of the lamp to ground.

Does the test lamp light?

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Go to Step 6

Go to Step 7

Replace all of the lamps.

Is the repair complete?

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System OK

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Locate and repair CKT 1850 (BLK) for an open to ground.

Is the repair complete?

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System OK

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