For 1990-2009 cars only
- Inspect the Backup Circuit Breaker to determine if it is open. If it is open, Locate and Repair the cause of the overload and then Replace the circuit breaker.
- Inspect the lamps for an open or shorted filament. Replace the lamps if necessary.
- Adjust or Repair the Backup Lamp Switch if the backup lamps do not turn off.
- Inspect the wiring for broken or partially broken conductors inside the insulation which could cause system malfunction but prove to be GOOD in a continuity or voltage test with the system disconnected. These circuits maybe intermittent or resistive when in use. The circuit should be monitored for a voltage drop during operation.
- Inspect for proper installation of aftermarket electronic equipment which may affect the integrity of other systems (Refer to Checking Aftermarket Accessories ).
