SW1 L4-1.9L SOHC VIN 8 (1996)
Vehicle Speed Sensor: Description and Operation
General Description
VEHICLE SPEED SENSOR
The PCM provides vehicle speed to the instrument cluster for the speedometer by way of the VSS. The vehicle speed sensor (VSS) is a variable
reluctance pulse generator that senses the transaxle output. It operates between 0-161 km/h (0-120 mph).
PULSE OUTPUT
The PCM supplies an output to the instrument cluster (speedometer/odometer). This signal is 5000 pulses/mile, representing the divided down vehicle
speed. It is a square wave signal from 0 to 12 volts. The correct output to the speedometer depends on the PCM being programmed with the correct tire
size. Refer to Vehicle ID table using a Scan tool to be sure tire size option matches the tire size on the vehicle.
