Auto Headlamps Will Not Turn On

Tests 389 - 393:

Tests 394 - 396:

SYMPTOM
* AUTO HEADLAMPS WILL NOT TURN ON

POSSIBLE CAUSES
- NO response (BCM) - CCD bus failure
- NO response (PCM) - CCD bus failure
- Auto headlamp signal circuit open
- Electrochromic mirror defective (default)
- BCM defective - auto headlamp sensor