Vehicle Speed Sensor: Testing and Inspection

Checking Speed Sensor:

- Disconnect negative cable at battery.
- Remove combination meter from instrument panel.
- Connect ohmmeter between "GND" terminal and "VSS" terminal of combination meter and turn cable joint of speedometer with a screwdriver.
- Ohmmeter indicator should move back and forth between 0 (zero) and oo (infinity) 4 times while cable joint is turned one full revolution.
- Replace speedometer if check result is not satisfactory.
- Install combination meter to instrument panel.
- Connect negative cable to battery.