Overhaul - Aw50-40LE: Description
Transaxle is a 4-speed overdrive electronically controlled automatic transaxle. Transaxle consists of lock-up torque converter, oil pump, 3 planetary gear sets, clutch and brake units, valve body and 4 electronic valve body solenoids.
Valve body with solenoids and Transaxle Control Module (TCM) are used for controlling transaxle operation. Solenoids are controlled by TCM.
TCM receives input signals from various areas to determine transaxle shift points and torque converter lock-up. Areas sending signals to TCM consists of mode selector switch, Traction Control System (TCS), Throttle Position (TP) sensor, input speed (RPM) sensor, output speed sensor, gear position sensor, ATF temperature sensor, brake switch and kickdown switch. See Fig 1.
Transaxle is equipped with a mode selector switch. Switch is used for normal, sport and winter driving conditions. Transaxle is also equipped with a shift lock and starter interlock system. Shift lock system prevents shift lever from being moved from Park position unless brake pedal is applied. In case of malfunction, shift lever can be released by disconnecting fuse No. 9. Starter interlock system prevents power from being applied to starter circuit except in "P" and "N" shift lever positions.