Pinpoint Test F: The Message Center Displays Trailer Disconnected, Trailer Gain XX.XX, No Trailer After A Trailer Is Connected To The Vehicle And The Manual Slider Switch Is Moved Or A Gain Button Is Pressed.
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Normal Operation and Fault Conditions
The TRM requires a minimum of 5 seconds after a trailer is connected to "detect" the trailer. This learning process requires no input from the brake pedal, manual slider switch or gain buttons. If the brake is pressed, the manual slider switch is moved or a gain button is pressed, the learning process is stopped and the TRM cannot detect the trailer.
REFER to: Auxiliary Brake System - System Operation and Component Description .
Possible Sources
- INFORM the customer of the learning process and they must wait at least 5 seconds after connecting a trailer before pressing the brake pedal, moving the manual slider switch or pressing the gain buttons.
Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods