Circuit Description
WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
The throttle motor is operated by the ECM and it opens and closes the throttle valve. If DTC is stored, the throttle valve is locked at a certain opening angle. Also, the whole electronically controlled throttle operation is cancelled until the system returns to normal and the ignition switch is turned OFF. DTCs will set if throttle control motor is locked during control of throttle control motor.