New ecm

[Rawze]

(07-12-2019 )Lonestar10 Wrote:  Welp back to original ECM 2nd ECM off the shelf at Cummins wouldnt communicate with their computer my original would come on like a pro.

sounds like to me that their bench harness may be pushing one of the pins in when their plugging it in?. that or second one was in rom-boot mode and they did not know how to recover it?

just think how bad of a time it would have been if you had not let them try to flash it themselves first. they would have accused you of the problem.