What is the sensor on the left side of Chuanqi gs4 gearbox?

The engine speed sensor is located in the distributor and installed on the gearbox clutch housing.

The working principle of the transmission pressure sensor is to detect the pressure of the intake manifold behind the throttle. It detects the change of manifold pressure according to the engine speed and load, and then sends the signal to the engine control unit, and the ECU receives the signal to control the fuel injection quantity. When the engine is working, the smaller the throttle opening, the greater the vacuum degree of the intake manifold, the smaller the absolute value in the manifold and the smaller the output signal voltage. The greater the throttle opening, the smaller the vacuum degree of intake pipe, the greater the absolute pressure of manifold and the greater the output signal pressure.