Wheel Speed Sensor Rotors: Inspection
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.
Perform a comprehensive visual inspection of wheel speed sensor rotor. If any teeth are damaged or missing, or any other damage is noted, replace wheel speed sensor rotor.