Pinpoint Test I : One Or Both Upper Or Lower Low Beams Only Are On Continuously - Vehicles With Halogen Headlamps: 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 .
BCM DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1D00:15 | Left Low Beam: Circuit Short to Battery or Open | A continuous memory and on-demand DTC that sets when the BCM detects a short to voltage from the LH low beam output circuit. |
| B1D01:15 | Right Low Beam: Circuit Short to Battery or Open | A continuous memory and on-demand DTC that sets when the BCM detects a short to voltage from the RH low beam output circuit. |
BCMB DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1D00:15 | Left Low Beam: Circuit Short to Battery or Open | A continuous memory and on-demand DTC that sets when the BCMB detects a short to voltage from the LH low beam output circuit. |
| B1D01:15 | Right Low Beam: Circuit Short to Battery or Open | A continuous memory and on-demand DTC that sets when the BCMB detects a short to voltage from the RH low beam output circuit. |
Possible Sources
- Wiring, terminals or connectors
- BCM
- BCMB (Auxiliary Lighting Control Module [ALCM])