Schematic Reference: Exterior Lights Schematics

Did you perform the Lighting Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

Operate the backup lamps to verify the fault is present.

Does the system operate normally?

Go to Testing for Electrical Intermittents in Wiring Systems

Go to Step 3

1. Turn the ON the ignition with the engine OFF.
2. Set the park brake.
3. Place the transmission in neutral.
4. Disconnect the park/neutral position switch.

Are the back-up lamps on?

Go to Step 4

Go to Step 5

Remove the VEH B/U fuse.

Are the back-up lamps on?

Go to Step 6

Go to Step 7

Inspect for poor connections at the harness connector of the park/neutral position switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 8

Repair the backup lamp supply voltage circuit for a short to voltage between the engine wiring harness junction block and the back-up lamps. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 9

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Repair the backup lamp supply voltage circuit for a short to voltage between the engine wiring harness junction block and the back-up lamp switch. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 9

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Replace the park/neutral position switch. Refer to the following:

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