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MM1 Solenoid activation problem

Discussion in 'Fisher Engineering Discussion' started by tjp249, Jan 20, 2014.

  1. tjp249

    tjp249 Junior Member
    Messages: 2

    Have a MM1, 3 Plug/4 port iso setup. Bought it used and installing on a new vehicle.

    I get power to the controller, but the solenoid never engages (I never get 12V to coil side of solenoid. I do hear clicking at the plow side when engaigin directional controls, and if I apply 12V to the solenoid coil it will energize and I can get hydraulics to engage.

    So, do I have a bad 4 port module or is there something I'm missing?


  2. jshocik

    jshocik Member
    Messages: 42

    Have you tried a different solenoid? Sounds like when you jump it, everything works. I'd try a different one to see what happens.
  3. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,179

    Check pins at control connector. If possible try another control.
  4. tjp249

    tjp249 Junior Member
    Messages: 2

    Thanks for the responses,

    After downloading the schematic from Fishers website it definitely is a control issue and not the iso. Dug into it and I have a bad 10 pin to 6 pin controller adapter. Wiring harness is for V plow, and I have straight plow & controller). one pin is open.