Differential Electronic Module (DEM)
WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 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 DIFFERENTIAL ELECTRONIC MODULE (DEM) .