Mercruiser 350 MAG MPI 5.7L + Smartcraft (LOST ENGINE COMM ERROR)

[benchircop26]

Hi, this season i took off the engine from the boat as I had to reseal the stern inside out. The engine is working fine but sometimes before starting I am having an error LOST ENGINE COMM. The engine looks fine and I tried to check harnesses/plugs but everything looks fine. Does anyone had the same issue or maybe you know some troubleshooting. Thanks in advance.

 

[alldodge]

No easy way, its probably a loose connection. Look closely at the pin contacts, and this isn't the main power cable, it would be the harness and junction box, and terminators

 

[benchircop26]

Will go tomorrow and try to check them. Also mechanic didn't find any errors on the engine itself so you are definitely right. Thanks a lot for your help.