Was the Headlights System Check performed?

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Go to Step 2

Go to Headlight System Check

1. Connect a scan tool to the Data Link Connector (DLC).
2. Inspect the IPC headlamp switch input.

Does the headlamp switch operate properly?

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Go to Step 3

Go to Step 5

1. Turn the headlamp switch to the ON position.
2. Disconnect the body control module (PZM) connector C2.
3. Measure the voltage to ground at the body control module (PZM) connector C2 terminal C9 (YEL).

Is battery voltage measured?

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Go to Step 4

Go to Step 7

Inspect CKT 352 (WHT) for an open or short to ground. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems.

Is CKT 352 OK?

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Go to Step 9

Go to Step 10

Inspect CKT 151 (BLK/WHT) for an open between the headlamp switch and S216. Refer to Testing for Continuity in Wiring Systems.

Is CKT 151 OK?

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Go to Step 6

Go to Step 10

Inspect CKT 10 (YEL) for an open between the instrument cluster (IPC) and the headlamp switch. Refer to Testing for Continuity in Wiring Systems.

Is CKT 10 OK?

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Go to Step 8

Go to Step 10

1. Place the ignition switch in the OFF position.
2. Remove the ignition key from the ignition switch.
3. Place the headlamp switch in the ON position.
4. Connect a fused jumper from the headlamp switch connector C1 terminal D to terminal A.

Is there an audible warning (with doors open) and are the park lamps and headlamps ON?

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Go to Step 8

Go to Step 9

Replace the headlamp switch. Refer to Headlamp Switch Replacement .

Is the headlamp switch replacement complete?

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Go to Headlight System Check

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Replace the body control module (PZM). Refer to Body Control Module Replacement in Body Control Systems.

Is the body control module replacement complete?

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Go to Headlight System Check

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Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Headlight System Check

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