Don´t think anyone has opened one of them yet. You can be the first So it´s just to start cutting, at least to se if there is an AUD port and go from there. Guessing 7052, maybe m32r but no way to know before you open it up.
They are not always in same place, but there you got some visible AUD pads! Just to try and read it out like in this thread: http://ecuhacking.activeboard.com/t14206571/using-aud-interface-to-read-the-memory-contents/