Unfortunately, on the 'side of the wall' we only deal with the cars from 89-98. As yours is 2002, you should post on the other side with the newer cars. That being said, our wonderful kick-fix pages does have a section for testing the MAF:
Again, this is for the older cars, and I don't know if its applicable to your car.
'91 Tracker 8V, 1.6L, 5 sp, 4wd, 2dr, conv, CAMI, horribly rusty
'97 Suzuki Vitara 8v, 1.6L 5 sp, 4wd, 2dr, tintop, horribly purple
'61 NSU Quickly - 150mpg