car does not start and scanner cannot read
 

hey guys, while driving home 1 day my honda fit died on me. first it cut off and then i started it again it drove for a few and died again. finally i started it and it drove me home but it died in the drive way and to this day it has not been able to start.
my honda fit cranks but does not start. we have check the fuel pump replaced it and no change. the relays checked, fuses checked same thing. battery is good. it was then said that it was the ecu thats the problem becuz it was hot. i got a mechanic to use a scan tool to check the problem the scanner cud not connect with the ecu. tried another ecu same result, scanner does not connect so we cannot get an idea of the problem. what do u advise that we do next because am a bit frustrated with the guessing game by the mechanics