On our 36RL, the water line is under the sink in the kitchen island. You should be able to disconnect it there and be able to see if you are getting water from the main line to the ice maker line or blow it out. There is a valve tucked up under the sink to turn it on and off. Out side, you can open the fridge panel and see the line coming up from under neath and where it connects to the solenoid.
Skip & Patty
2013 Redwood 36RL
2015 Ram 3500 Laramie CC DRW 4x4 (Bertha)