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Home >> Land Rover >> 2015 >> Range Rover Autobiography >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Automatic Transmission/Transaxle - (8HP45) -- Range Rover/L405) >> Automatic Transmission / Transaxle - Vehicles With: 8HP45 8-Speed Automatic Transmission AWD >> Transmission Description >> Description And Operation >> Description >> Transmission Control Module

Transmission Control Module

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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 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-programmed data, the module calculates the correct gear, torque converter clutch setting and optimum pressure settings for gear shift and lock-up clutch control.

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