Sensor Rotor: Inspection
WARNING: This page is about a different car, the 1995 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Sensor rotor is not serviceable. Perform a comprehensive visual inspection of sensor rotor. If any teeth are damaged or missing, or any other damage is noted, replace differential. See DIFFERENTIALS & AXLE SHAFTS article in DRIVE AXLES Section.