Lysholm Compressor
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.
Remove drive belt. Rotate compressor shaft by hand. Compressor shaft should rotate smoothly. Check for cracks or damage. Replace compressor as necessary.