Schematic Reference: Exterior Lights Schematics

Did you perform the Lighting Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

Verify the fault is present.

Does the system operate normally?

Go to Testing for Electrical Intermittents in Wiring Systems

Go to Step 3

Remove and inspect the RR PRK fuse. Refer to Wiring Repairs in Wiring Systems.

Is the fuse open?

Go to Step 6

Go to Step 5

Connect a test lamp from between the lamp ground circuit and a battery positive voltage circuit.

Does the test lamp illuminate?

Go to Step 8

Go to Step 7

1. Inspect the tail lamp for open filament. Replace the bulb if needed
2. Ensure that connector C4 at the rear lamps bussing block and C405 are properly seated. Refer to Testing for Electrical Intermittents in Wiring Systems.

Was the problem found?

Go to Step 9

Go to Step 6

1. Repair the short to ground in the fused park lamp feed circuit.
2. Replace the fuse. Refer to Testing for Short to Ground in Wiring Systems.

Did you complete the repair?

Go to Step 9

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Repair the open in the lamp ground circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 9

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Repair the fused park lamp feed circuit between the fuse and the lamp. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 9

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3