Pinpoint Test B : One Or More Trailer Stop/Turn Lamps Are Inoperative: Notes
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Wiring Diagram Trailer/Camper Adapter 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 |
|---|---|---|
| B1D08:11 | Left Trailer Direction Indicator: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the TRM detects a short to ground from the LH trailer stoplamp/turn signal output circuit. |
| B1D09:11 | Right Trailer Direction Indicator: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the TRM detects a short to ground from the RH trailer stoplamp/turn signal output circuit. |
Possible Sources
- Fuse
- Wiring, terminals or connectors
- Trailer concern
- Trailer tow connector
- TRM
Visual Inspection and Diagnostic Pre-checks
- Verify the BJB fuse 43 (20A) is OK.
- Inspect the trailer tow connector for signs of corrosion or damage. Repair or install a new trailer tow connector as required.