I picked up this 2004 Polaris sportsman 500 atp a few weeks ago and have put a lot of work into it. The only thing I can’t seem to repair is the turf mode to work. The rear diff is always locked. I pulled the solenoid off of the diff and tested it on 12v and it works. I put my meter to the lead and found very little resistance. So maybe it’s gone bad? I also checked the voltage across the harness side connection while the key was on. I noticed that with the switch on "turf" my reading was 12v and with it switched to off or awd the reading was around 10.5 – 11v. To me that seems odd, you would think switching to off would drop the voltage to nothing. I traced the wires back to a module up front with 5 leads.
Does anyone have a link to the 04 atp wiring diagram?