Transmission Control Module (TCM) Control Function
WARNING: This page is about a different car, the 2006 Mercury Montego and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
In automatic gear shift control, based on each gear shift pattern, SAA and SBB turn ON or OFF and SSC, SSD, SSE and SSF are operated linearly according to information that includes vehicle speed, the degree to which the accelerator is open and brake signals. For the gear and solenoid operation table, refer to the GENERAL SPECIFICATION TABLES .
The transmission range (TR) sensor is built in the transmission control module (TCM), it detects the automatic transmission range information via the Hall-effect sensor and outputs the information to the TCM. The TCM reads the voltage and adjusts the automatic transmission range.