Wonderful out come David.
If I could sum it up, those who have followed this thread find out how advanced the engine control systems are, what is needed to look into the program and see the software accumulations of faults and to trust 100% what is revealed with no guessing or throwing of parts at the problem..
An understanding of the system operations is very helpful to shorten the repair time.
Very important is workmanship when doing any work. This is a guard from introducing any additional faults to the system that can cause great confusion.
Good luck.

 

Way to go David. I hope your fridge had a good supply of wobbly-pops, because you earned them.