Circuit Description

Vehicle speed values are provided by the Vehicle Speed Sensor (VSS). The VSS 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 greater than 1500 RPM, MAP sensor indication is greater than 0.5 volt (3 psi), transaxle not in Park/Neutral (A/T) and DTC P0107 or P0108 is not set. VSS signal is continuously checked once these conditions are met. If VSS signal is missing, speedometer will be inoperative.