APP sensor (accelerator pedal position) along with the throttle valve, it is used to implement the control-by-wire principle. This sensor is a resistive sensor. The sensors in the accelerator pedal are designed to register the driver's requests to accelerate, decelerate or maintain the vehicle's speed. These signals are input to the ECM, and the throttle valve, via an electric motor built into the throttle body, opens, changing the angle.
APP sensor signals (accelerator pedal position) are checked for absolute value and reliability. Two different reference voltages are supplied to the pedal. If one sensor fails, the signal from the second can be used in emergency control mode.
The wires connecting the ground and signal circuit of both potentiometers to the EMS are twisted into two twisted pairs, which made it possible to avoid using a screen.
When an incorrect signal is received from the ECM (engine control unit) goes into emergency mode. APP sensor (accelerator pedal position) mounted on the accelerator pedal.
(The original article is located on: LRman.ru)
APP Sensor C0787 Connector Pin Table (accelerator pedal position)
| Contact No. | Purpose | Input signal/output signal |
| 1 | Sensor mass 2 | - |
| 2 | Sensor 1 control signal | Output signal |
| 3 | Sensor mass 1 | - |
| 4 | Not used | - |
| 5 | Sensor 2 control signal | Output signal |
| 6 | Power supply 2.5V | Input signal |
| 7 | Power supply 1 5V | Input signal |
| 8 | Not used | - |
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