Search for a post entitled "Getting Troublecodes on 300E." In the second post of that thread there is a link labeled "this page" This shows how to build the test set and may have more information.

I didn't take enough time to see if all the codes are in the write up. If not and you do get a trouble code, post it here. I have the CD and will try to find time and remember to look up the code for you.