Automatic Transmission Diagnosis - Aw03-72LE & Aw03-73LE: Operation: Pcm
The PCM 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 PCM contains a self-diagnostic system, which will store a Diagnostic Trouble Code (DTC) if failures or problems are present in the electronic control system. DTC can be retrieved to determine problem areas. See SELF-DIAGNOSTIC SYSTEM . Note location of PCM. See Fig 1 .