Code 24, Vehicle Speed Sensor (VSS) 3.8L: Notes

Speed sensor, which is a Permanent Magnet (PM) generator, provides control module with vehicle speed information. PM generator, mounted in transmission, produces a pulsing AC voltage signal whenever vehicle speed is greater than 3 MPH. Voltage level and pulses increase with vehicle speed. Control module converts pulsing voltage to MPH, which is used by control module to calculate vehicle adjustments.

NOTE: Test numbers refer to numbers on diagnostic chart.

PM generator only produces a voltage signal if drive wheels are turning greater than 3 MPH.
Before replacing control module, MEM-CAL should be checked for correct application.