I checked the resistance on the clutch coil, I get 2.3 ohms on my meter. I also check the refrigerant pressure and it is normal for the ambient temp. outside and way above what is required to engage the clutch. Reason I ask is I ran the truck with the two connectors at the compressor disconnected and it set a CEL. Hooked them back up and after a couple of short trips the light went out. I went to an auto parts place and they told me there would be no codes for the AC. After looking at the schematic you sent, it shows two different connections to ecm, pcm.
After fiddeling around under the truck and in the wheel well and with my limited electronics knowledge I have scheduled an appointment with my preferred dealer. Thanks for the reply, I was just curious since it set a CEL. bgi