What is the reason why the voltages of the two signal lines under the accelerator pedal are different?

The accelerator pedal position sensor is generally composed of two six-wire Hall sensors, that is, two power lines are 5 volts and two signal lines, which will change back and forth with the height of the pedal to measure voltage and resistance and two grounding signals.

The function is to send the signal of the accelerator pedal size to the engine computer, which controls the opening of the accelerator motor according to the signal, and its main function is to provide the computer board with the engine speed signal that the driver wants to achieve, and then the computer controls the engine working state according to the signals provided by other sensors.

Generally, there are 6 wires, 2 signals, 2 5-volt power supplies and 2 signals. The voltage of the signal line will change with the action of the accelerator pedal, and the voltage of the silver signal line is generally the opposite! You can measure its signal voltage to see if it will change, and you can also measure the resistance of the sensor. Zui-that is, you can use the decoder-decoder to see the data flow changes of sensor signal voltage.