HI, I am getting alarm 1 on both traction and hyd controllers. Battery voltage is fine as are fuses. I am getting my 48v pos supply to the contactor but don't seem to be getting the neg. Anybody any ideas of where i could be losing the negative or why my main contactor is not being supplied the neg. My traction controller is testing ok.
Thanks
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Hi Diesel,
Is the main contactor coming in,truck will still light up the display even if this doesn't come in,obviously make sure you have 48v both sides of the contactor,or at the 2 main heavy fuses,as they're sealed you can't actually see tips,so will need to check with a meter,and have you also checked the small microswitch on the side of the emergency disconnect?
as a general rule, negative is supplied through the controller.
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