Hi,
usually you cannot access a cpu, because its protected against pirates, no readout .
So (from my experience) best chance is : clean ... remove all dirt/oxidation with a needle or so,
clean with Isopropanol or Aceton, dry with hair dryer , ...and try.
If not working after this...buy a new.
(Replacing the chip is useless, if you dont have access to the original program - from Maserati or a good professional car thief . :) )
If you feel a post has answered your question, please click on " Best Answer ".