Transaxle Control Module
Transaxle Control Module (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 include mode selector switches, Throttle Position Sensor (TPS), input speed (RPM) sensor, output speed sensor, gear position sensor, TCS module, Automatic Transaxle Fluid (ATF) temperature sensor, brake switch and kickdown switch. See Figure .
TCM contains a self-diagnostic system which stores Diagnostic Trouble Codes (DTC). If a transaxle problem exists, DTC's can be retrieved to determine transaxle problem area.