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Home >> Ford >> 2021 >> Transit Connect Titanium, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 138 (Auxiliary Brake System) >> Description And Operation >> Auxiliary Brake System - Vehicles With: Trailer Brake Control - System Operation and Component Description >> System Operation >> TBM Wake Up
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TBM Wake Up

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: These conditions require a trailer not be connected to the trailer tow connector.

The following conditions describe the normal operation of the TBM at start up.

When the ignition is set to the ON position and the manual lever is set all the way to the left with a gain of 10, the message center should display TRAILER DISCONNECTED. At the same time, with the vehicle stationary, battery voltage should be present at pin 3 of trailer tow connector C4099 .

When not  braking the TBM sends a voltage pulse every 4 seconds to pin 3 of the trailer tow connector to determine if a trailer is connected to the trailer tow connector.

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