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View Full Version : Rom boot pinout for CM554 cummins ecm?



wait4me
26th March, 2018, 04:13 PM
Hi guys, As the title says, I am looking for the pin out for the rom boot mode on the 2003 CM554 ecm.

I have looked all over and it is not out there for some reason.

Pins for power and reading/writing are

Right harness plug when third tab faces you.

2 Can+
12 Can-
5 IGN
30 Ground
50 + Battery.