According to the Haynes manual, the computer is located under the glove box, behind the relay center, and is bolted on the left side to the carrier it sits in. To get at it, the manual lists:
! disconnect negative post to battery
2 remove screws from trim panel under right end of dash
3 remove trim panel to expose relay panel ( dirctly under glove box)
it is possible you may have to disconnect wiring harness to allow room to access, you will have to see once you get in there.
Good luck
Jeff