Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems | |||
1 | Did you perform the Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Do both backup lamps illuminate? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Is only one lamp inoperative? | Go to Step 9 | Go to Step 4 |
4 |
Does the test lamp illuminate? | Go to Step 5 | Go to Step 7 |
5 |
Do the backup lamps illuminate? | Go to Step 11 | Go to Step 6 |
6 | Test the backup lamps switched voltage supply circuit for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 8 |
7 | Test the STOP/B/U lamps fuse voltage supply circuit for a poor connection, an open or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 10 |
8 |
Important: Perform the setup procedure for the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration in Computer/Integrating Systems. Replace the BCM. Refer to Body Control Module Replacement in Computer/Integrating Systems. Did you complete the repair? | Go to Step 12 | -- |
9 | Repair the open or the high resistance in the inoperative backup lamp switched voltage supply or the ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 12 | -- |
10 | Replace the underhood electrical center. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems. Did you complete the repair? | Go to Step 12 | -- |
11 | Replace the reverse lamp relay. Refer to Relay Replacement in Wiring Systems. Did you complete the repair? | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
