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 2016 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.