Contenu
In a vehicle, the output speed sensor is also known as the vehicle speed sensor. It s a signal to the transmission control unit to inform it of the speed of the vehicle.
Function
The output speed sensor measures how fast a vehicle moves and s that information to other vehicle systems. The transmission control unit uses the speed to determine when to change gears, adjust the torque converter and display the vehicles speed in the speedometer.
Identification
The output speed sensor is a small unit connected to the transfer case. It has a magnetic pickup consisting of a magnet and coil, as well as a rotor with gear teeth. When these spin, it creates a square wave signal. The more signal volts created in the sensor, the faster the vehicle is moving.
Effects
Many systems within a vehicle share information from the output speed sensor. The sensor tells the anti-lock brake system when a wheel is locked and tells the power steering system the vehicles speed so it can determine how much steering pressure to apply.
