Vehicle Speed Sensor: Description and Operation

VEHICLE SPEED SENSOR

OPERATION
- The vehicle speed sensor is incorporated within the speedometer; it converts vehicle speed data to pulse signals and inputs those signals to the engine control module. The engine control module, based upon those signals, regulates the idle air control motor, etc.
- The vehicle speed sensor, by intermitting by the lead switch the flow (to ground) of the approximately 5 V voltage applied from the engine control module, produces vehicle speed signals.