Volvo Repair: ignition cut out, foot area, computor

Question
HEY BILBO THANX FOR YOUR ANSWER BUT UNORTUNATELY I HAVE CHANGED AND CHECK ALL THE COMPONENTS THAT YOU HAVE SUGGESTED ALREADY AND STILL THE SAME PROBLEM. THIS IS WHY I WAS WONDERING IF THERE WAS A COMPUTOR JUST FOR THE IGNITION ITSELF. THANX AGAIN
TRACEY  

Answer
Tracy,
    There are at least 2 computers that control ignition.
         E C U..inside engine compartment.
       Another computer located near pass. foot area behind panel to right...I think.
         CHECK your fuses..throughly...be sure they are corrosion free.

         Good Luck,
         Bilbo