The pump is located next to the windshield water tank, to access it you have to go by the passenger�s side, remove the Allen nuts for the mudguard that is right above the front tire, remove the cover and you will see the pump just in the right side, almost behind the fender.
I discover this location because suddenly the water sistem in the windshield stop sendig water, I touhgt it was the pump, but water was still going out, the mudguardcover and wheel were wet. I removed the mudguard and found that the hose was disconected. I fixed it and put the mudgard back in place. I prefered to do it myself and took me about 30 minutes from start to finish. I could have took a day in the ford dealer to fix it and who knows how much they could have charged for it.
My SUV is a 2006 Ford Escape 3.0 V6, I have been comparing the haynes manual (http://wiki.answers.com/Q/Special:Booksources&isbn=1563925206) for 2001 to 2003 models and basically us the same thing for all the models. So is useful for everyone who wants to do repairs by your own.