How do you change serpitine belt on 2002 infiniti g20?

To change the serpentine belt on a 2002 Infiniti G20, first, ensure the engine is off and cool. Locate the belt routing diagram, usually found on a sticker under the hood. Use a wrench to relieve tension on the tensioner pulley, then slide the old belt off. Finally, install the new belt according to the routing diagram, ensuring it sits properly on all pulleys before releasing the tensioner.