Vehicle Speed Sensor: Description and Operation

OPERATION
- The vehicle speed sensor is directly attached to the speedometer driven gear in the transmission. It detects the vehicle speed and sends it to the engine control module after converting to pulse signals, based on which the engine control module controls the idle speed control motor.
- The output terminal of the vehicle speed sensor has a voltage of approx. 5 V applied from the control module. The vehicle speed sensor generates pulse signals by turning on and off the power transistor.