I have a question for those that have been there before me. I was called by a diesel repair shop wanting to know if I could program a Ram 2500 PCM. I said yes and gave them my info. After I hung up the phone I thought, “Hmmm... I wonder if they may have been talking about the Cummins ECM?” Well, they called back today to state they had the part in hand, and just as I suspected they are talking about the Cummins ECM. I have not done one of these yet. I have a micropod 2 and wiTECH 2.0. It is my understanding that this can be done using that. I know that I will need the injector info which can be read from the old module with a scan tool or can also be read off of the injectors. Can This job also be done using Chrysler j2534 software under Misc. Functions? Is there anything I should be aware of before I travel to do this job?
The 2012 should be able to be done with j2534. I also have witech 2.0. Why wouldn't you just use that?
The only reason I wouldn’t is I don’t carry a year long subscription (I am still evaluating demand). I would have to buy a 3 day for $50 vs $25 for Tech Authority and use j2534.
On that new of one it goes pretty smoothly with the Witech software. Make sure they can swap the modules for you because reading the numbers off the injectors is a PITA. Make sure they get you the SKIM code too. This will save using your LSID and spending extra money.
I can get the SKIM code. I have my LSID and have prepared for that. I read that some of the injectors are near impossible to read without a high quality borescope.
Use the witech 2.0 read injector iqa#s in old module, make sure got skim key, then swap modules, go into skim or win and tell it you replaced ecm and want tranfer the pin # it should ask for pin then transfer pin and ecm to new module. Start and collect. I have not had good luck using jbox on dodge diesels.
Well this one got a little crazy. It was definitely ”Freak out Friday” for me. I arrived only to find out it was not a 2012, but a 2002. The Truck also had a used JTEC PCM with the wrong VIN from a 2002 HO Cummins. This truck also had a 6 speed manual trans, but the engine was not a HO engine. I could not pull the original part number from the Cummins ECM. We looked up the ecm number by VIN…
Benjamin, Sorry that it turned out to be a train wreck. Without writing the VIN to match ABS there may be a light on. As far as I know the only tool to write the VIN is the DRBIII or Emulator. I am sure they will give you a call if there is a concern. _Mike
I have used j2534 toolbox to write the vin. Sometimes it doesn't work. If you unplug abs and redo it works. Let the truck sit for 5 minutes. Plug abs back in. Don't know what it has to do with it. It works. If all else fails I have a drb3.
I had the DRBIII emulator with me. There was already ABS faults. There is no option to write the VIN or read the VIN through the Cummins ECM on this one. I proved it by unplugging the JTEC PCM on the firewall. The VIN was no longer present. Also the DRBIII does not give you the option to rewrite the VIN if it is validated. It is my understanding If I had reflashed the JTEC PCM on the firewall
In the DRB when it seems that the VIN is stored an cannot go forward, just move forward and you can program the VIN again. I did not believe it when told to me. I tried it and it works. -Mike
This is true. It is also a bit nerve wracking, because the tool does some abnormal things, including an extended period of blank screen.
Well, I was called back out to this truck today. A bonus is I rewrote the VIN in the PCM (not the Cummins ECM) which was incorrect to begin with. Thank you Michael Christopherson for the advice on using the DRB3 for that. If you select “page fwd” you can then edit the VIN. Unfortunately, it looks like my customer got a bad new Cummins ECM. I also found that the original Cummins ECM was from an
Update: Cummins finally determined the replacement ECM was indeed faulty. They sent a new ECM and I was called back out to program the replacement today. Everything went flawlessly, and the truck Is running great!!