Engine Control Module
WARNING: This page is about a different car, the 2002 Toyota ECHO, 2002 Toyota Celica, 2001 Toyota ECHO, and 2001 Toyota Celica. However, it is still accessible from the selected car via links, so may be relevant.
ECM receives information from various input devices and uses this information to control shift solenoids and torque converter lock-up. ECM contains a self-diagnostic system, which will store a Diagnostic Trouble Code (DTC) if failure or problem exists in the electronic control system.
DTC can be retrieved to determine transaxle problem area. See SELF-DIAGNOSTIC SYSTEM . On Celica, ECM is located in engine compartment, near battery. On ECHO, ECM is located behind glove compartment. See Figure and Figure .