I have a 2012 300 with Icon controls. my gauges are all on and green my lights for the contol underneath is solid green, no fuses blown that I can find anywhere. No RPM, no engine data or anything is coming though to them please help.
You can check all the connections in case something came loose. Most likely you will need to have a trained tech with the diagnostic software determine what error codes are stored and with that information, can start the troubleshooting procedures.
"There is never just one thing wrong with a boat";
-- Travis McGee, main character in a book series by John D. McDonald
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.
The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.