Circuit Description
WARNING: This page is about a different car, the 2003 Toyota Matrix and 2003 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
For circuit description, see DTC P0120: THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT MALFUNCTION . Detecting condition of DTC is when after vehicle speed has been exceeded 19 mph (30 km/h) even once, output value of throttle position sensor is out of applicable range for vehicle speed is more than zero mph (2 trip detection logic).