Courtesy Lamp Circuit
WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
| CONDITION | POSSIBLE CAUSES | CORRECTION |
|---|---|---|
| A SINGLE LAMP IN THE COURTESY LAMP CIRCUIT DOES NOT ILLUMINATE | 1. Ineffective or missing bulb. | 1. Test and replace the courtesy lamp bulb if required. |
| 2. Ineffective lamp switch. | 2. Test and replace a dome/reading lamp switch if required. | |
| 3. Ineffective ground circuit. | 3. Test and repair the open ground circuit if required. | |
| 4. Ineffective feed circuit. | 4. Test and repair the open feed circuit if required. | |
| ALL LAMPS IN THE COURTESY LAMP CIRCUIT DO NOT ILLUMINATE | 1. Ineffective ground circuit. | 1. Test and repair the open ground circuit if required. |
| 2. Ineffective feed circuit. | 2. Test and repair the open feed circuit if required. | |
| 3. Courtesy DEFEAT feature turned ON. | 3. Turn courtesy DEFEAT feature OFF. | |
| 4. Ineffective courtesy lamp control circuit. | 4. Test and repair the courtesy lamp control circuit if required. | |
| 5. Ineffective Body Control Module (BCM) inputs or outputs. | 5. Use a diagnostic scan tool and the appropriate diagnostic information for further BCM diagnosis. | |
| A SINGLE LAMP IN THE COURTESY LAMP CIRCUIT DOES NOT EXTINGUISH | 1. Ineffective lamp switch. | 1. Test and replace a dome/reading lamp switch if required. |
| ALL LAMPS IN THE COURTESY LAMP CIRCUIT DO NOT EXTINGUISH | 1. Ineffective ajar switch. | 1. Test and replace a door ajar or liftgate ajar switch if required. |
| 2. Ineffective ajar switch sense circuit. | 2. Test and repair the shorted ajar switch sense circuit if required. | |
| 3. Ineffective BCM inputs or outputs. | 3. Use a diagnostic scan tool and the appropriate diagnostic information for further BCM diagnosis. |