PINPOINT TEST AH : One Or More Trailer Stop/Turn Lamps Are Inoperative Or Always On: Notes
WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic Overview
One Or More Trailer Stop/Turn Lamps Are Inoperative Or Always On
Refer to Trailer/Camper Adapter for schematic and connector information.
Normal Operation and Fault Conditions
Refer to Exterior Lighting .
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 Trailer Module (TRM) detects a short to ground from the left trailer stop/turn lamp voltage supply circuit. |
| B1D08:12 | Left Trailer Direction Indicator: Circuit Short To Battery | A continuous memory and on-demand DTC that sets when the Trailer Module (TRM) detects a short to voltage from the left trailer stop/turn lamp voltage supply circuit. |
| B1D09:11 | Right Trailer Direction Indicator: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the Trailer Module (TRM) detects a short to ground from the right trailer stop/turn lamp voltage supply circuit. |
| B1D09:12 | Right Trailer Direction Indicator: Circuit Short To Battery | A continuous memory and on-demand DTC that sets when the Trailer Module (TRM) detects a short to voltage from the right trailer stop/turn lamp voltage supply circuit. |
| U1000:00 | Solid State Driver Protection Actived-Driver Disabled: No Sub Type Information | This DTC sets when the Trailer Module (TRM) has temporarily shut down the output driver. The module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The Trailer Module (TRM) cannot enable the output until the cause of the short is corrected, the DTCs have been cleared and a successful self-test is run. |
| U3000:49 | Control Module: Internal Electronic Failure | This DTC sets when the Trailer Module (TRM) has permanently shut down the output driver. The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the Trailer Module (TRM) can withstand. CORRECT the cause of the excessive current draw before installing a new Trailer Module (TRM). |
Visual Inspection and Diagnostic Pre-checks
- Inspect the BJB fuse 21 (30A).
- Inspect the vehicle stop and turn lamps for correct operation.
- Inspect the trailer tow connector for damage.