Smartcraft depth and temperature stopped working

[paulswagelock]

Verado motor with Smartcraft Through hull temperature and depth stopped working this season. 4 years old. Is there an inline fuse somewhere I can check (installation manual refers to one in some pictures)? Any way to troubleshoot these? I know the sensor can fail, but I would like to try to troubleshoot anything possible before a declare it just suddenly died.
Anyone know where it plugs into the network, at the motor or at the helm?
I looked at the thru hull from inside, perfectly clean and dry.

 

[paulswagelock]

Well, traced down the wires to under the motor cowling. Plugs, fuses, all look good. I suppose the transducer must have failed.

 

[Jeremygavin]

It is most likely an Airmar transducer and they are known for high failure rates. The temperature Wasn’t working on mine when I bought my boat three years ago so I replaced it with a new one. Last season the temperature stopped working again and Airmar wouldn’t cover it under warranty because it was after the warranty date so I had to buy another transducer. It is very frustrating but there is no solution.