TCM Signals
WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
The TCM registers one part of the input signals by direct inputs, the other part by CAN bus. In addition to the direct control of the actuators, the TCM sends various output signals by CAN bus to other control modules.