What is the Trinary switch? Is that the switch inline with the condenser under the hood below the right hand headlamp? I'm looking it up on www.subaryparts.com but can't find it. Now, I said that I was going to be doing some tests and wouldnt stop until I found the problem. I got the under dash sensors Friday from a car in the salvage yard. Replaced them and still the same problem. That leads me to believe that my problem is with the sensor that is in the tube that comes from the condenser (High pressure switch?) It seems that the only way to get this sensor is to buy part#73431(I).which is (Pipe-Condenser-Liquid Tank). Anyone have this problem before?