How to replace serpentine bel on a 2003 toyota rav4

SOURCE: diagram 2003 toyota rav4 serpitine belt routing

http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?partName=Engine+Mechanical&pageId=0900c1528019c35b&partId=0900c1528019c35b

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SOURCE: I have a 2003 rav4 v4 and I'm replacing the

You shouldn't have to loosen anything. There should be an idler pulley. It will be a spring loaded pulley which keeps the belt tight. To remove your belt, once you locate pulley, release the tension by using a socket and pull/push untill belt loosens, (with 2 people is easier) MAKE SURE YOU KNOW HOW TO PUT IT BACK ON!!! Go online, or factory, and get a diagram of belt routing.

SOURCE: how to replace a fuel pump on a toyota rav4 1998

you need to remove the rear seat to get to it, just keep in mind the system is preasurized, which in english means you need to loosen the fuel filter in the front of the car first, "THIS IS CRITICAL" if not you will cause gas to get all over the interior. The 96-00 rav4 has a hatch under the carpet, under the seats in the rear. it is a pain to get to, once you remove the seats and carpet you will see it. I would recomend you bring it to a dealer if you dont know what you are doing. But if you are like me and figured what the hell, then you will want to take these steps first...
1. Let the car sit for a long period of time, about 3 hours or more.
2. Have a low amount of fuel, do not have a full tank
3. loosen the gas cap
4. Remove the intake, and the fuse box,
5. Loosen the top nut on the fuel filter under the hood to let out the remaining pressure, do not loose the O rings. This is a good time to replace that filter too, it is about 30 bucks from toyota.
6. open the hatch in the rear,
7. remove the electric feeds from the pump.
NOTE: YOU CAN REMOVE THE POWER FROM THE PUMP AND START THE CAR TO TAKE OUT THE PREASURE, BUT I FOUND IT BETTER TO DO IT MY WAY DUE TO WHAT IT TAKES TO START IT AFTER YOU DO THIS.
8. line the floor of the rav with Plastic, bags, or cardboard, or something.
9. remove old pump
10. install new pump
11. Re attach the fuel filter or install new filter
12. get car back together enough to start it, make sure you have all the lines connected, if not gas will get everywhere...
Good Luck, it was a FUN adventure to do this...