For 1990-2009 cars

Step | Action | Normal Result(s) | Abnormal Result(s)*
--- | --- | --- | ---
1 | Place the gear selector lever in the REVERSE position (manual transmission). | Backup lamps illuminate. | Backup Lamps Inoperative
2 | Place the gear selector lever in the REVERSE position (automatic transmission). | Backup lamps illuminate. | Backup Lamps Inoperative
3 | Place the gear selector in any range but REVERSE. | Backup lamps go out. | Backup Lamps Always On
* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.