Motorcraft Differential Control Module – Ford (tm309)

Motorcraft Differential Control Module converts a physical condition into a signal the powertrain module acts on. The module compares that signal against an expected range at every start-up, so a failing unit is usually logged before it becomes a driveability complaint.

Replace the Differential Control Module when the fault repeats with the harness already ruled out, when resistance drifts as the part heats up, or when a connector has corroded past cleaning. Swapping a sensor to chase a wiring fault is the most common wasted repair on these circuits.

Ordering reference for the Differential Control Module is part number tm309, categorised under Differentials. Match that number against the component you are removing before you order.

This is FORD dealer-sourced stock rather than an equivalent, so the number on the Differential Control Module traces straight back to the manufacturer.