Accelerator Pedal Position Sensor
WARNING: This page is about a different car, the 2018 Infiniti Q60. However, it is still accessible from the selected car via links, so may be relevant.
The accelerator pedal position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensors detect the accelerator pedal position and transmits a signal to the ECM. The ECM uses the signal to determine the amount of fuel to be injected.
NOTE:
When one of the accelerator pedal position sensors has a malfunction, ECM uses a signal from another accelerator pedal position sensor.
In this case, ECM controls as follows.
- Limits throttle valve angle to approximately 60% or less
- Delays the throttle valve opening speed
- Fixes engine speed at an idling standard value when the brake pedal is depressed
- Fixes idle speed