Resistance Test
WARNING: This page is about a different car, the 1996 Mazda Millenia and 1995 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect wheel speed sensor connector. Using ohmmeter, measure resistance between wheel speed sensor connector terminals. Resistance should be 1600-2000 ohms. If resistance is not as specified, replace wheel speed sensor.