this question has probably been asked a thousand times but im posting for a friend. my question is, is there a way to check the cels that come up? i know that on hondas you can use a paperclip to jump the ecu.is there a technique like this for this truck, without the need of diagnostic equipment? oh yah and its a '02 prerunner w/ the 3.4 v6 and the offroad package. thanks guys!