As I said in the other thread, the workshop manuals are only in japanese and a fella I know from the Jap U12 club informs me that they are also out of print and hard to find even in japan.
About reading the ECU's error codes, a HNU13 owner will have to help you with that as I have a CA18DET not an SR.
Also, its two TT's and one S in attesa... if you own one, you should know that