Transmission Control Module
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The Transmission Control Module (TCM) is an integral part of the mechatronic valve block. The TCM is located at the bottom of the automatic transmission, within the fluid pan. The TCM is the main controlling component of the automatic transmission.
The TCM processes signals from the automatic transmission speed and temperature sensors, Powertrain Control Module (PCM) and other vehicle systems. From the received signal inputs and pre-programmed data, the TCM calculates the correct gear, torque converter clutch setting and optimum pressure settings for gear shift.
The PCM supplies the Engine Management System (EMS) data over the FlexRay bus.