Hello,
I've got a defective Bosch MS6.2 EDC ECU from an Iveco Cursor 10 engine. It first did not close the main supply relay, but the engine started if you manually supplied it with power. The diag led would remain permanently lit in the meantime. After a week or so it ceased to start at all.
The truck had a problem with the ground wires that went into the ecu and i suspect that's the cause of the failure. It also kept the glow plug on.
After I cracked it open and analyzed it a bit, I think the culprits may be 2 ic's labeled Bosch 30327 and Bosch 30119. I suspect both of them to be drivers. Google wasn't of any help and I hope that someone here can give me some info.
I can post some photos if they are requested.

Thank you