dont be daft about breaking, like i said its cave man technology if you carnt figure it out then GTFO of a car! yea, if they move then there fine, which then points the fingure at either discs or pads. if i dont move, undo the cable from the caliper and pull arm that the cable pulls with some pliers and check if the piston moves, if it does the caliper is fine and its cables or just as simple as the cables arnt set up tight enough ect. . just work though it logically mate, its simple process of elimination to figure out whats faulty or broke!