Circuit Description

WARNING: This page is about a different car, the 2003 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

The accelerator pedal position (APP) sensor is mounted on the accelerator pedal to detect the opening angle of the accelerator pedal. Since this sensor is electronically controlled with hall elements, accurate control and reliability can be obtained. Two sensors are used to detect the accelerator position and malfunctions of the accelerator position sensor. The voltage applied to APP sensor pedal terminals VPA and VPA2 of the ECM toggles between 0-5 volts, in proportion to the opening angle of the accelerator pedal. The VPA signal indicates the actual accelerator pedal opening angle and is used for the engine control. The VPA2 signal indicates the information about the opening angle and is used for detecting a malfunction. The ECM determines the current opening angle of the accelerator pedal from these signals input from terminals VPA and VPA2. ECM controls the throttle motor based on these signals.