Medium and Heavy Trucks
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HI I'm Wayne
I will try to help you with this
what are we working on, year and model ,Please
Thank you for that
does it crank over and start ??
that code this is what the book says
Connector #4007 Pin #E Electric horn under currentThe Current from this output is below 0.5 AOpen circuitFor your AC check for a complete system charge to be sure the pressure switches are getting enough pressure to allow the compressor to cut in. If so check for a faulty switch and harness. Other potential causes are fuses and relays, Faulty harness or pressure switch. Check the harness and pressure switches
I foyu put power to your clutch ,Will the A?C work ??
Go to firewall driver side
you will see a group of 4 wires,
Blue,Green and 2 other colors unplug that
and check for corrosion
I am out of thoughts , I will opt-out
post back to the board for another expert
Sorry I could not help
hi im alex, have you had this hooked up to DLB navistar software?
yea the a/c is controlled by the body controller, if there is no power with the a/c on then body controller is shutting down ac system , this is a first gen body controller a simple softwear update could fix all these problems have seen it tons of times
do you need any help on this?
and no other warning lights on? i would check data link at the diagnostic connector
you have 60ohms at the connector?
do you have engine software? can you connect to engine?
yes this dosent seem right, the engine is on the 1708 data link should beable to communicate with it, you can hook to another truck with comm adapter you are using?
ok i would unplug all but one module see if you can connect to just one, if you can plug in another