What is a btn fuse on a 2000 Mazda Protege?

A BTN fuse on a 2000 Mazda Protege typically refers to the "Body Control Module" fuse, which is responsible for various electronic functions within the vehicle, such as lighting and power Windows. If this fuse is blown, it may cause certain electrical components to malfunction or not operate at all. Checking and replacing this fuse, if necessary, can help restore functionality to those systems. Always consult the vehicle's owner manual for the specific location and rating of the fuse.