Corsica L4-2.2L VIN 4 (1995)
Vehicle Speed Sensor: Component Tests and General Diagnostics
Circuit Operation
The Vehicle Speed Sensor is a gear-driven Permanent Magnet Generator housed in the vehicle's transaxle. This sensor generates a sine wave output with
a frequency proportional to vehicle speed. The PCM converts this signal to an output that is switched to ground at a frequency of 4000 pulses per mile at
the (817 CKT) wire output. This output is pulled up to 0.6 volts or greater by the components that use this speed signal as an input.
System Diagnosis
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Refer to the Symptom Table for the appropriate diagnostic procedures. See: Symptom Related Diagnostic Procedures/- Symptom Table
Vehicle Speed Sensor (VSS)
A scan tool vehicle speed display should closely match the speedometer when drive wheels are turning.
