| CM870 ECM communication |
| Yesterday, (Subject: CM870 ECM communication ) Post: #1 | |||
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| CM870 ECM communication Good afternoon. I have a CM870 that I'm having trouble with. The customer had a custom file in this one and we couldn't communicate with the OEM side datalink, but could connect thru the 3 pin weatherpack connector on the Cummins side of the ECM. We bought a reman ECM pre-programmed and installed it this morning. It communicated normally thru the cab diagnostic port and ran normally except an active egr valve fault. Anyway I had our "expert" flash it to help out with that egr fault and he mentioned it failed almost thru flashing and now it won't communicate thru the OEM port again, but will communicate through the Cummins side weather pack plug. I feel like this communication issue was caused both by the previous flash and the one we just did this morning. Any ideas on how to get through this? Thanks everyone for the help! | |||
| Yesterday, (Subject: CM870 ECM communication ) Post: #2 | |||
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| RE: CM870 ECM communication What adapter are you using? Stop and get ahold of someone from here before you get the ECM into a "Rom Boot" state... | |||
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