Code 72, VSS Circuit Loss Transmission Output Signal: Notes
WARNING: This page is about a different car, the 1995 GMC Sonoma and 1995 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
VSS output sensor is a magnetic induction type. Gear teeth pressed on outside diameter of output carrier assembly induce an alternating current in sensor when drive wheels are turning.
NOTE:
Test numbers refer to test numbers on diagnostic chart.
- Test verifies VSS voltage at control module.
- Test checks VSS buffer ground circuit.
- Test checks VSS circuit at buffer module.
- Test verifies VSS signal at sensor.