KX080-4s CAN bus high & low pins

[Handymantim]

Howdy,

I have a 2021 KX080-4s and in the cab next to the right ankle under a plastic cover with one phillips screw are 3 groups of wires. The group on the right has 4 wires and I assume it is a diagnostic plug:
Black: ground
Red: +12v with key on
Green: ?
Yellow: ?

I assume the green and yellow are CAN bus wires. Does anyone know which one is CAN high and which is CAN low?

Thanks

 

[Fordtech86]

I assume the green and yellow are CAN bus wires. Does anyone know which one is CAN high and which is CAN low?

disclaimer: I don’t know if they are CAN circuits…

but IF they are…

if you have an oscilloscope handy, you could see which one raises voltage for the high side and lowers voltage for low side

or…

if a basic volt meter is only thing you have the high side would typically read around 2.6-2.7 volts and low side 2.3-2.4 volts if network is working properly…