Normal Operation
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The transmission control module (TCM) monitors the controller area network (CAN) communication circuit 1814 (WH/LB) and circuit 1815 (PK/LB) for an ABS module event. If an ABS event occurs, the TCM monitors the Total Torque Desired in the TCM. If the Total Torque Desired is greater than 200 Nm (148 lb-ft), the TCM sets DTC C1218.