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Home >> Land Rover >> 2017 >> Discovery Sport SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Electronic Engine Controls - INGENIUM I4 2.0L Petrol -- Discovery Sport/L550) >> Electronic Engine Controls - INGENIUM I4 2.0L Petrol >> Description And Operation >> Description >> Transmission Control Module

Transmission Control Module

WARNING: This page is about a different car, the 2018 Land Rover Discovery Sport. However, it is still accessible from the selected car via links, so may be relevant.
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The Transmission Control Module (TCM) is located on the top of the automatic transmission casing. The TCM is connected on the High Speed (HS) Controller Area Network (CAN) powertrain systems bus to send and receive information to and from other system modules. The TCM is the main controlling component of the transmission.

The TCM processes signals from the transmission speed and temperature sensors, Powertrain Control Module (PCM) and other vehicle systems. From the received signal inputs and pre-programed 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 HS CAN powertrain systems bus. If the TCM, the transmission or the valve block is replaced, a diagnostic routine using an approved Jaguar Land Rover diagnostic equipment will be required to calibrate the TCM.

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