Pinpoint Test B : The AUTOLAMPS Are On Continuously: Notes
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Headlamps/Autolamps for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Exterior Lighting - Overview .
REFER to: Exterior Lighting - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1A85:11 | Ambient Light Sensor: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the light sensor input circuit. |
| B1A85:13 | Ambient Light Sensor: Circuit Open | An on-demand DTC that sets when the BCM detects an open or short to voltage from the light sensor input circuit. |
Possible Sources
- Wiring, terminals or connectors
- Light sensor
- BCM
Visual Inspection and Diagnostic Pre-checks
- Inspect the headlamp switch for damage.
- Inspect the light sensor for damage.