Transmission Control Module
WARNING: This page is about a different car, the 2011 Jaguar XKR, 2011 Jaguar XK, 2010 Jaguar XKR, and 2010 Jaguar XK. However, it is still accessible from the selected car via links, so may be relevant.
The transmission control module (TCM) is an integral part of the Mechatronic valve block which is located at the bottom of the transmission, within the fluid pan. The transmission control module (TCM) is the main controlling component of the transmission.
The transmission control module (TCM) processes signals from the transmission speed and temperature sensors, engine control module (ECM) and other vehicle systems. From the received signal inputs and pre-programmed data, the module calculates the correct gear, torque converter clutch setting and optimum pressure settings for gear shift and lock-up clutch control.