Diagnosis - Aw03-72LE (With OBD-II): Operation: TCM
The TCM receives information from various input devices and uses this information to control shift solenoids No. 1 and 2 on transmission valve body for transmission shifting, and TCC solenoid for torque converter lock-up.
The TCM contains a self-diagnostic system, which will store a Diagnostic Trouble Code (DTC) if failures or problems are present in the electronic control system. DTCs can be retrieved to determine problem areas. See SELF-DIAGNOSTIC SYSTEM . Note location of TCM. See Fig 1.