For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Lighting Systems Connector End Views
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Turn ON the ignition, with the engine OFF.
2. Place the gear selector in park or neutral.

Do the backup lamps illuminate?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

3 | Disconnect the backup lamp switch, for manual transaxle or the park neutral position switch, for automatic transaxle. Are the backup lamps illuminated? | Go to Step 4 | Go to Step 5
4 | Repair the short to battery positive voltage in the backup lamp supply voltage circuit. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 6 | --
5 | Replace the appropriate switch. Refer to Backup Lamp Switch Replacement or Park/Neutral Position Switch Replacement . Did you complete the replacement? | Go to Step 6 | --
6 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3