Troubleshooting Hints

1. Check the R/CMPT REL Fuse. If open, repair a short to ground in circuit 840.
2. Check the backup lamps for damage to the filament or corrosion between the bulb and the lamp socket.
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove GOOD in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems. Refer to General Troubleshooting Procedures. Diagnostic Aids
^ Refer to System Diagnosis.