Component Description
WARNING: This page is about a different car, the 2015 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
TBM
The TBM is the electronic control unit for the trailer brake system. The TBM monitors all sensor inputs and all HS-CAN messages relating to trailer braking and directly controls the trailer brakes using a PWM signal. Vehicle configuration information is sent to a new TBM from the BCM when the ignition is set to ON.