1kz Ecu Pinout (RELIABLE)Later models feature transponder key immobilizers built into the ECU, preventing engine start if the correct key isn't used. Swapping ECUs requires reprogramming the immobilizer or using a matching key and ECU set, or professional immobilizer bypass. Water Temperature Sensor (ECT) signal. Adjusts cold start fueling and glow plug duration. THA: Intake Air Temperature (IAT) sensor signal. Auxiliary & Chassis Inputs 1kz ecu pinout |