MX5100 DT won't crank

[RoamingFarm]

Hi folks,
When I turn the key to start, the fuel valve opens, the glow plugs get power, but the starter solendoid does not close. So the interlocks seem to be ok. Also the starting relay tests ok. Here's the real mystery - I measure 13 volts on the wire to terminal 1 of the starting relay (this is the side of the relay going to the starter solenoid) when the key is not turned. When I put a probe on this wire and accidentally shorted it to the chassis, the fuse for the high beam relay blew. Why in the world is the high beam relay connected to solenoid side of the starter relay? A similar question came up in this forum on 06-17-2011 concerning a B2320.

 

[North Idaho Wolfman]

The control signal is a ground signal not a hot, so you can have hot and no ground, the 2 control switches are the PTO and the seat I would check those 2 switches first.
The starter system has 2 hots one that is high amperage and a control low amperage and probably the same as the high beam relay.

 

[RoamingFarm]

Thanks for the info that the control signal is ground. That clears up some confusion. If I can hear the fuel valve open when I turn the key, is that proof that the interlock switches are working?

 

[North Idaho Wolfman]

Thanks for the info that the control signal is ground. That clears up some confusion. If I can hear the fuel valve open when I turn the key, is that proof that the interlock switches are working?

No, the starter interlock is controlled threw a different circuit, there is no safety on the fuel delivery.

 

[RIDETOEAT]

This forum is a bit of a gold mine for Kubota owners and the North Idaho Wolfman is a super dude for all he contributes !!! I am very glad to have found this place and decided on Orange instead of green.