He will need to do it discreetly, as they will be very suspicious and protective of their internal software and data storage. However, upon scanning he will find that they are truly entirely machine - however, their systems have been uploaded with data that did not originate from a mechanical place, but had once come from a more natural source.

They are not sick, exactly, as they are outdated. They are running an iOS from an iPhone 3, and trying - desperately - to keep themselves from updating.