Component Description

With ECO pedal 

The accelerator pedal position sensor is installed on the upper section of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM.

Courtesy of NISSAN NORTH AMERICA, INC.

Without ECO pedal 

The accelerator pedal position sensor is integrated with the accelerator pedal. The sensor detects the accelerator position and sends a signal to the ECM.

Courtesy of NISSAN NORTH AMERICA, INC.

Accelerator pedal position sensor has 2 sensors. These sensors are a kind of potentiometer which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.

Courtesy of NISSAN NORTH AMERICA, INC.

Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for engine operations such as fuel cut.