Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Lighting Systems Connector End Views or Body Control System Connector End Views in Body Control System | |||
1 | Did you perform the Lighting Systems Diagnostic System Check? | Go to Step 2 | |
2 | Verify that the backup lamps are always on. Do the backup lamps operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Is the vehicle equipped with a manual transmission? | Go to Step 5 | Go to Step 4 |
4 | Use the scan tool to check if there are any codes set in the current or history Powertrain DTC Information. Are any codes present? | Go to the Diagnostic System Check in the appropriate Transmission Section | Go to Step 7 |
5 |
Do the backup lamps illuminate? | Go to Step 6 | Go to Step 9 |
6 | Test the backup lamp signal circuit of the BCM for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 7 |
7 | Test the backup lamp supply voltage circuit of the BCM for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 8 |
8 | Inspect for poor connections at the harness connector of the Body Control Module (BCM). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 10 |
9 | Replace backup lamp switch. Refer to Backup Lamp Switch Replacement in Manual Transmission - NV 3500, Backup Lamp Switch Replacement in Manual Transmission - NV 4500 or Backup Lamp Switch Replacement in Manual Transmission - ZF S6-650. Did you complete the replacement? | Go to Step 11 | -- |
10 |
Important: Perform the setup procedure for the BCM. Replace the body control module (BCM). Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 11 | -- |
11 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
