Is there a way to retrieve the error codes from the ECM without the CDS G3 tooling? I have found the trick for pre-2000 codes with the shorting of A & B and the LED flash codes. Is there a way to get the codes from a 2016 model? Is it possible to use an automotive scan tool adapted to the Mercury test port or is the communication protocol different for the marine industry? Any information is greatly appreciated. Thank you in advance. Cheers.