As the information source of the automotive electronic control system, the vehicle speed sensor is the key component of the automotive electronic control system and one of the core contents of the research in the field of auto sensors technology. It detects the speed of the electronically controlled vehicle and controls ECU to use this input signal to control the idle speed of the engine, the lock of the torque converter of the automatic transmission, the shifting of the automatic transmission, the opening and closing of the engine cooling fan, the cruise control and other functions.

The vehicle transmission speed sensor supplied by MAPMS is used to detect the speed of the output shaft of the automatic transmission and convert it into the speed of the car. It is also an important basis for the shift control of the automatic transmission.

What Are the Symptoms of a Bad transmission speed sensors ?

Stop or Shut Down

When the vehicle starts or decelerates to stop while driving, there is an instant stop or flameout.

Deviation

The odometer on the instrument does not display the speed or the display is deviated, cannot accurately display the real-time mileage and speed.

Reduced Acceleration Performance

The engine acceleration performance decreases.

Vehicle Speed Sensor Features

The car speed sensor supplied by MAPMS is used to detect the speed of the output shaft of the automatic transmission and convert it into the speed of the car. It is also an important basis for the shift control of the automatic transmission.

Moreover, it is used to detect the speed of the electronically controlled car. The control computer uses this input signal to control the idle speed of the engine, the torque converter of the automatic transmission is locked, the automatic transmission gear shift, the opening and closing of the engine cooling fan, and the cruise control.

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