Transmission is equipped with a shift lock and key lock system. Shift lock system prevents shift lever from being moved from Park unless brake pedal is depressed. ELECTRONIC CONTROLLED TRANSMISSION ELECTRONIC CONTROL UNIT (ECT ECU) 1) The ECT ECU receives information from various input devices and uses this information to control No. 1, No. 2 and lock-up solenoids. The ECT ECU contains a self-diagnostic system, which will store code if failure or problem exists in the electronic control system.
Input & Output Devices (Corolla Shown, Prizm Is Similar) Courtesy of Toyota Motor Sales, U.S.A., Inc. Park/Neutral Position Switch Park/Neutral position switch delivers an input signal to ECT ECU to indicate shift lever position. SELF-DIAGNOSTIC SYSTEM. ECT ECU monitors transmission operation and contains a self-diagnostic system which stores code if transmission electronic control system failure or problem exists.
