Differential Electronic Module (DEM)
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
The DEM (if equipped) uses the high speed CAN for communication with the diagnostic tool. The DEM controls the amount of torque to be applied from the engine to all wheels. For additional information, refer to REAR DRIVE AXLE/DIFFERENTIAL .