Principles of Operation: TCM
WARNING: This page is about a different car, the 2005 Lincoln Navigator and 2005 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
The TCM uses the high speed CAN (Navigator only). The TCM controls transaxle shifting, the electronic pressure control, and the torque converter clutch. For additional information, refer to AUTOMATIC TRANSMISSION - 6HP26 .