CONSTRUCTION
This non-contact type accelerator pedal position sensor uses a Hall IC, which is mounted on the accelerator pedal arm.
A magnetic yoke is mounted at the base of the accelerator pedal arm. This yoke rotates around the Hall IC in accordance with the amount of effort that is applied to the accelerator pedal. The Hall IC converts the changes in the magnetic flux that occur into electrical signals, and outputs them in the form of accelerator pedal position signals to the ECM.
The Hall IC contains 2 circuits, 1 for the main signal and 1 for the sub signal. The Hall IC converts the accelerator pedal position (angle) into electric signals that have differing characteristics and outputs them to the ECM.
The ECM detects "Kick Down On" according to the voltage (VPA signal) from the accelerator pedal position sensor.