Exterior Lighting: Headlamps
WARNING: This page is about a different variant/trim than selected.
| CONDITION | POSSIBLE CAUSES | CORRECTION |
|---|---|---|
| HEADLAMP DOES NOT ILLUMINATE | 1. Ineffective or missing bulb. | 1. Test and replace headlamp bulb if required. |
| 2. Ineffective ground circuit. | 2. Test and repair open headlamp ground circuit if required. | |
| 3. Ineffective feed circuit. | 3. Test and repair open headlamp low beam or high beam feed circuit if required. | |
| 4. Ineffective left (lighting) multi-function switch. | 4. Test and replace left (lighting) multi-function switch (clockspring) if required. | |
| 5. Ineffective BCM inputs or outputs. | 5. Use a diagnostic scan tool to test the BCM inputs and outputs. Refer to the appropriate diagnostic information. | |
| HEADLAMP DOES NOT EXTINGUISH | 1. Ineffective feed circuit. | 1. Test and repair shorted headlamp low beam or high beam feed circuit if required. |
| 2. Ineffective left (lighting) multi-function switch. | 2. Test and replace left (lighting) multi-function switch (clockspring) if required. | |
| 3. Ineffective BCM inputs or outputs. | 3. Use a diagnostic scan tool to test the BCM inputs and outputs. Refer to the appropriate diagnostic information. | |
| HEADLAMPS WILL NOT SWITCH FROM HIGH TO LOW BEAMS, OR FROM LOW TO HIGH BEAMS | 1. Ineffective left (lighting) multi-function switch. | 1. Test and replace left (lighting) multi-function switch (clockspring) if required. |
| 2. Ineffective BCM inputs or outputs. | 2. Use a diagnostic scan tool to test the BCM inputs and outputs. Refer to the appropriate diagnostic information. | |
| 3. Ineffective shutter mechanism. | Test and replace shutter mechanism (headlamp unit) if required. |