Transaxle Control Module

Transaxle Control Module (TCM) Wiring Diagram





The TCM is an electronic circuit component that controls gear shift and idle-up according to the signal from each sensor. It is a microcomputer of an IC, transistor, diode, etc. It is installed at the right side of the steering column.








Operation of Shift Solenoid Valves and TCC Solenoid Valve

Automatic Gear Shift Diagram





Automatic shift schedule as a result of shift control is shown in the following. In case that selector lever is shifted to L at a higher than 57 km/h (35.5 mph) speed, 2nd gear is operated and then down shifts to 1st at a speed lower than that.
No up shift is available in L.
The same as, the select lever is shifted to 2 at a higher than 112 km/h (70 mph) speed, 3rd gear is operated and then down shifts to 2nd at a speed lower than that. No up shift is available in 2.





Gear shift diagram [A] and TCC lock-up diagram [B]

Component Locator





Electronic Shift Control System Components Location