Is there a repository of Suzuki ECU documentation? I'm particularly interested in 112200, 112300, and 112400. Apparently, these units were developed by Denso but are closed source, probably why they don't provide any technical documents.
what are you after, pinouts or maps?
Schematic with technical documents or at least a block diagram of the ECU(s) explaining where every block is located, interconnections between the blocks, and their working.
I don't think it's an easy task, Pinouts are easier, Maps a bit harder.. but block diagrams with working, i don't think anyone outside the manufacturer will have this info. Best of luck though.
What do you mean by maps? I thought it was easier to draw a block diagram.
It is a very silly question to begin with. You expect manufacturers to share something they spend millions of rupees developing for free? and cut their hands off.
It's a decades old piece of hardware and I've already seen things on the internet that I wouldn't have otherwise. You're not wrong tho.