Light Bar Lamps
WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before performing the following tests on vehicles manufactured for markets outside of North America, confirm whether both the park lamps and the low beam headlamps operate satisfactorily. If the park lamps or low beam headlamps are inoperative or operate improperly, diagnose and repair that problem before attempting to repair the light bar lamps.
| CONDITION | POSSIBLE CAUSES | CORRECTION |
|---|---|---|
| ONE LIGHT BAR LAMP DOES NOT ILLUMINATE | 1. Faulty or missing bulb. | 1. Test and replace off road lamp bulb as required. |
| 2. Faulty ground circuit | 2. Test and repair open off road lamp ground circuit as required. | |
| 3. Faulty supply circuit. | Test and repair open lightbar switch output circuit as required. | |
| NO LIGHT BAR LAMPS ILLUMINATE | 1. Faulty or missing fuse. | 1. Test and replace light bar lamp fuse as required. |
| 2. Faulty switch feed circuit. | 2. Test and repair open fused B(+) circuit to light bar switch as required. | |
| 3. Faulty ground circuit. | 3. Test and repair open off road lamp ground circuit as required. | |
| 4. Faulty supply circuit. | 4. Test and repair open lightbar switch output circuit as required. | |
| 5. Faulty switch ground circuit. | 5. Test and repair open light bar switch ground circuit as required. | |
| 6. Faulty switch supply circuit. | 6. Test and repair open fused ignition switch output (run-start) circuit (North America) or park lamp relay output circuit (except North America) as required. | |
| 7 Faulty switch. | 7. Test and replace light bar lamp switch as required. | |
| LIGHT BAR LAMPS DO NOT EXTINGUISH | 1. Faulty supply circuit. | 1. Test and repair shorted lightbar switch output circuit as required. |
| 2. Faulty switch. | 2. Test and replace light bar lamp switch as required. | |
| INOPERATIVE OR INCORRECT LIGHT BAR INDICATIONS IN INSTRUMENT CLUSTER | 1. Faulty switch sense circuit. | 1. Test and repair open/shorted lightbar switch sense circuit as required. |
| 2. Incorrect BCM programming. | 2. Use a diagnostic scan tool to check and program correct country code into BCM as required. | |
| 3. Faulty BCM inputs or outputs. | 3. Use a diagnostic scan tool to test the BCM inputs or outputs. Refer to BODY DIAGNOSTIC PROCEDURES . |