Module, Transmission Control (TCM): Description

If the vehicle is equipped with a NAG1 transmission the TCM (1) is a separate module located behind the drivers knee bolster to the right of the steering column. On Right Hand Drive vehicles, the TCM is mounted on the left side, behind the glove box. The TCM uses the Controller Area Network (CAN) C high-speed intra-vehicle communications network to deliver commands to the transmission and monitor operations. A module on the automatic transmission shifter communicates range selection data to the transmission, also using the CAN-C network. This information is also displayed in the instrument cluster.