Diagnosis - 4-Speed: Operation: TCM

The TCM receives information from various input devices and uses this information to control shift solenoids No. 1 and 2 on transaxle valve body for transaxle shifting, and control TCC solenoid for torque converter lock-up.

The TCM contains a self-diagnostic system which will store a Diagnostic Trouble Code (DTC) if a malfunction is detected in the electronic control system. DTCs can be retrieved to determine problem area. See SELF-DIAGNOSTIC SYSTEM . TCM is located under instrument panel, to left of steering column.