CM871 to CM570 Odometer Issue

[e30rik]

(04-01-2025 )Rawze Wrote:  cm570 barely had J1939 on it. It is mostly J1708. A 2009 truck is going to be mostly J1939.

Right, are you saying this ECM isn't able to communicate with the truck properly? Everything seems to work besides the odo. It does have a diagnostics port hooked up but not sure which one it is visually. According to the PO it is capable of running ELD.