2015 t880 chassis node troubleshooting

Discussion in 'Trucks [ Eighteen Wheelers ]' started by dmccay0878, Mar 6, 2021.

  1. dmccay0878

    dmccay0878 Bobtail Member

    1
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    Mar 5, 2021
    0
    2015 t880 has a bank of switches on the dash that don’t work...two differential locks, suspension dump, and 5th wheel slide. Switches light up and indicators light up on dash Info center but the functions aren’t working. Also no washer fluid and wipers only work on high speed. I can hear relay click when washer fluid button is pushed so I assume the switch is good. Could this be a chassis node issue? I think all of the wires for the items not working are on the same node plug. Am I wrong? Could it be a wiring issue? I’m stumped. Not sure how to troubleshoot it
     
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