scanner not seeing ecm

[Mustzilla]

Hi, wondering if any one has encountered this or knows if I might be correct in my thinking. I've had my 95 GT at two garages and they have hooked up under the dash and under the hhod two differant scanners and don't see anything can't recieve memory info nothing you don't hear the senors clicking when put into engine on mode. Could this be a sign the computer has died? Anyone have any thoughts. By the way car still starts and runs by not like it should.