Volks, I've cobbled up a preliminary schematic of my ISCU (the C version,
FOR European 2.1L engines without catalytic converters)

http://good-times.webshots.com/photo/2296926930102108293WMmxWf

Please note it's preliminary, a lot is missing.
Also, the quality is low because I cannot output to jpg from my schematic
capture program (a very old old) and had to improvise a way to do so.

BTW, I'm quite sure by now that my output driver is OK because I sometimes
get an output on the ICV output pins (when I inject some noise in the
circuit), So it's probably somewhere in the analog circuitry or the small
transistors driver the output ones (I can't even see the names because
they're dipped in lacquer).

Last but not the least, I need more help from the list as I don't even
have a working unit!!!
Read my previous posts if you want to contribute.
Enjoy!

Cheers,
TM