Schematic Reference: Backup Lamp 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

1. Turn the ON the ignition with the engine OFF.
2. Set the park brake.
3. Place the transmission in neutral.
4. Disconnect the back-up lamp switch.

Are the back-up lamps on?

Go to Step 4

Go to Step 7

Remove the VEH B/U fuse.

Are the back-up lamps on?

Go to Step 5

Go to Step 6

Repair the fused back up lamp feed circuit for a short to voltage. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 8

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Repair the back up lamp feed circuit for a short to voltage. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 8

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Replace the back-up lamp switch. Refer to Park/Neutral Position Switch Replacement in Automatic Transmission - 4L60-E, Park/Neutral Position Switch Replacement in Automatic Transmission - 4L80-E, Backup Lamp Switch Replacement in Manual Transmission - NV 3500, or Backup Lamp Switch Replacement in Manual Transmission - NV 4500.

Did you complete the repair?

Go to Step 8

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3