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Cab command keeps shutting off

Discussion in 'Western Plows Discussion' started by giggity, Mar 2, 2014.

  1. giggity

    giggity Senior Member
    Messages: 165

    At the end of my route this morning my cab command kept shutting itself off every 5-10 seconds or so, checked all connections and did not see anything.. Its western ultra mount 3 wire.... Any ideas??
  2. mishnick

    mishnick 2000 Club Member
    Messages: 2,243

    Your system shuts off for one of two reasons. Either it is loosing + power or the ground plow presence circuit is loosing connection to ground.
    Check the ignition feed wire. It separates from the controller wire under the steering wheel about 20 inches from the controller plug. It's a red wire. Follow it to where it connects to the fuse box or other ign source. Make sure it's a good connection.
    Next check the two fuses closest to the isolation module. Now check the pump motor relay connections. Check the small red/green wire on the large + lug. This feeds power to the isolation module via those fuses.
    Next follow the motor relay harness to past the four way intersection. Just past that will b an adapter that goes from a large plug down to four pins. Verify all pins and wires are clean and tight. That's every connection on the + side.
    The plow presence circuit is a hot wire that starts at plug C on the isolation module, goes to the grill 11 pin plug where it goes to plow side and then loops right back to truck side, if plow is connected. So check the pins on all three plugs at the isolation module and the 11 pin grill plug. Now you need to verify that loop back wire has a good path to ground. Go back to that adapter and find the black connector with a single black/org wire going through it right beside and wired to the adapter. Finally go back to the motor relay and find the same kind of plug with the black/org wire connecting to the main plow motor power cable. About a foot from the negative battery post. Of course the controller, ctlr plug and controller itself could b faulty too.
    That's it, those are all the weak points. Hope it's not too confusing.
    Last edited: Mar 2, 2014
  3. John_DeereGreen

    John_DeereGreen PlowSite.com Addict
    Messages: 1,715

    Shutting off as in you go to move the plow, and then it shuts off before the plow starts to move?

    One of ours did that when the ground for the controller was loose.