The technician inspects each of the pads and rotors and makes sure that they're in good health. They'll make sure that there are no divots or scoring in the rotors, and that the brake pads have good thickness. Typically, a brand new brake pad is about 12 mm thick, and the technician will make sure that the brake pads are at least 3 mm thick. From there, they'll assess everything, see what needs to be replaced, and do the repairs at the time that are necessary.