Where is the electronic throttle control unit of Toyota Prado diesel EFI engine?

Under the air inlet hose, look down along the air filter.

Toyota's electronic throttle is developed from the cable-type electronic throttle. The cable-type electronic throttle still directly controls the throttle shaft through the cable, and the throttle motor is only responsible for the throttle opening control in the idle speed and idle speed transition zone. Electronic throttle is a throttle body controlled by electronic control. This throttle is not mechanically connected with the accelerator pedal, and the engine control unit controls the opening of the throttle according to the position of the accelerator pedal.