Miata, Millenia, Protege & 626
WARNING: This page is about a different car, the 2001 Mazda Protege, 2001 Mazda Millenia, 2001 Mazda MX-5 Miata, 2001 Mazda MPV, and 2001 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
VSS is located on side of transaxle (transmission on Miata). Disconnect negative battery cable. Disconnect VSS connector. Rotate front wheels (rear wheels on Miata) and using analog voltmeter, measure voltage between sensor terminals. See Fig 1 . If voltmeter needle does not fluctuate, replace sensor.