The ABS does have rotations per mile perimeter for tire size that must be set correctly if the truck uses it, 2 actually, drive and steer. You can also program the ABS to not transmit "high resolution wheel speed" over the data link. This may also require the cab controller to be set to ignore it as well.
I have also run into the VSS picking up stray voltages, our Pete's would spike the speedo when you go from high to low range on the trans while parked as well as stop a regen. I wrapped the VSS wires with aluminum tape and it solved our regen problems. I never seen a VSS fault from it, I assume that the 1 MPH difference was not enough to set a fault, or it did not happen long enough. In may case 35 MPH was enough to set faults and confuse the system.
Replacing ABS Modual??
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by murat, Jun 16, 2017.
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