Circuit Description

Vehicle speed values are provided by the Vehicle Speed Sensor (VSS). The sensor is mounted on the differential area of the transaxle housing. The PM generator produces a pulsing voltage whenever vehicle speed is greater than 3 MPH. These pulses occur 16 times per each revolution of the differential housing and are translated to provide vehicle speed in miles per hour.

DTC will set if there is VSS signal when engine speed is between 1400-4000 RPM, MAP sensor indication is less than .5 volt (3 psi) for greater than 5 seconds or vehicle not in Park/Neutral (A/T). VSS signal is continuously checked once these conditions are met. If VSS signal is missing, speedometer will be inoperative.