Transaxle Control Module (TCM)
TCM is located behind glove box. See Fig 1. TCM determines shift points and torque converter lock-up timing based on input signals received from various components. Components consist of mode selector switches, Throttle Position Sensor (TPS), input speed (RPM) sensor, output speed sensor, gear position sensor, TCS module, ATF temperature sensor, brake switch and kickdown switch. See Figure.
TCM contains a self-diagnostic system which stores a Diagnostic Trouble Code (DTC). If a transaxle problem exists, DTC's can be retrieved to determine transaxle problem area.