this link will give u your answer http://www.Ford-trucks.com/forums/647209-4x4-control-module-4x4-flash-problem-3.html
The 4x4 control module is located behind the kick panel in the passenger side floor board. The module simply unplugs and you plug the new one in.
I have a 2001 Ford Explorer sport trac and the module is located behind the front passengers side panel. I would have to believe that the 2002 Explorer would be the same.
behind the glove box
you will have to remove the dash bord
Take your car to a Chevy Dealer
The security module on 2002 Ford Explorer is on the passenger side, second row behind the seat belt panel.
just unplug it but do not have the car on. Also you will have to get it programed.
ford will do it because there is a recall on this item
just take the fuse out, that's what i did to mine,wont hurt nothing..........
The 2002 Acura airbag control module is located on the firewall in the engine compartment. The airbag control module will be on the drivers side of the firewall.
The powertrain control module (PCM) is visible from the engine compartment on the firewall on the passenger side. The RAP module for your keyless entry should be in the jack storage compartment (at least it is on the 4 door)
Replace the fuse and the relay called the CCRM (Constant Control Relay Module).