I just charge the battery, it went up from 9.95V to 12.48V as per the Fluke meter and 13.1V as per DAS. Again same message, "communication error with the control unit". It seems like N3/10 is fried. I also tested the battery with my Snap-on instrument, and it tested good at 12.48V and 698 CCA AFTER Charging. Can I open the ECU to inspect it visually? Any thoughts are welcome.

Darrel