Miata (M/T) & 626
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 Mazda Protege5, 2002 Mazda Protege, 2002 Mazda Millenia, 2002 Mazda MX-5 Miata, and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Vehicle Speed Sensor (VSS) is located on side of transaxle (transmission on Miata). Disconnect negative battery cable. Disconnect VSS connector. Remove VSS. Using analog voltmeter, measure voltage between sensor terminals while rotating gear on VSS. See Fig 1 . If voltmeter needle does not fluctuate, replace sensor.