Have Fisher min mount 2, motor activates but plow won't move. Checked the magnetism on S1-S3 seems ok. Any suggestions?

mm means what, Mickey Mouse? LOL

pumps fail many a way.
sucks air
leaks bad runs drive.
impeller bad.
filters.
or not primed.

Fisher Minute Mount MM 1 or MM 2 plow
i guess elect motor spins ok and oil is full
so bad pump is sucks air or is not primed and is air locked.

First make sure you have a good cable feeding the solenoid battery terminal check with a test light if ok, turn the plow switch on and test both sides of the solenoid if there's battery voltage there check at the plow lift motor is it plugged in, if so check at the plow lift motor battery terminal and if it lights your light repair the motor....these motors are know for seizing or getting stuck if you take the cap off you can probably fix it, put a punch mark on the cap, barrel and end frame to ensure alignment when reassembled. I hope this helps. Take Care.

Start by plugging everything in and pop the cover off the control part on the plow and check for magnetism on all 3 solenoids when you hit the various buttons on your plow controller. The pull should be very strong and noticable...a weak magnetic pull is likely just residual magnetism on your screwdriver. In my case, the S3 solenoid wasn't firing and that causes exactly what you're describing.

If your S3 isn't firing you can test the wiring by moving the S3 hot wire to the S2 solenoid. If your wiring is good the plow will misbehave in an entirely different way. Also get out your ohm meter and test the S3, if its good you should get 7 ohms on it.

You need to use the guide from Fisher and be methodical about it. Start at the plow and work your way backwrds towards the truck.

2002 Fisher Minute Mount Inst-Act Wont Angle [Archive] - PlowSite ...

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Nov 17, 2011 - 90 posts - ‎9 authors
My plow went up it was jerking and did it in steps , but , it got there . Now , it onlyjerks when i try to angle it right or left or up . I filled the fluid ... Drop it and if it doesn'traise you can just use a jack and shorten the transport chain to hold it. .... I do havecontinuity on the plow side for all 3 wires going to the plug . Hooking Up A Fisher Minute Mount 2 In Under 1 ...
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There solinoids on pump. Check wiring and grounds. Make sure all small wires are intact and in good condition. But most likely there's a loose corroded or green wire causing issue

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

looks like the problem came from the pump or belt

You may have to bleed air out of the system to get it to work properly. Hope this helps.