Re: International Problems? Ask me!
All the necessary communication lines that come out of the 60 pin connector end up going to the datalink port. So if the pcm is still hooked up to the bus, just use that. That way you don't have to search out individual pins in order to turn on the ecm. Nexiq has software to communicate with the ecm, as far as what the capabilities of that software is, I'm not sure. We originally purchased the nexiq software suite and tried to troubleshoot with it, but I was unimpressed and it would frequently crash. So now we just use the nexiq usb interface adapter with the OEM software. Servicemaxx is the factory software program that your dealership would use. I think diamond logic builder is a more simplified program that fleets use to read codes and perform repairs. Not sure what International MD is either. Servicemaxx is the only program I've ever had any familiarity with, and with it we could change any parameter that we wanted. I don't know what it costs exactly, but I don't think a subscription to servicemaxx would be a very wise investment just to change the speed limit on one bus. Not only that, but the learning curve you would face in trying to use it would also not be worth it. Unless you can't have the bus unmovable for any length of time, It would be easier for you to send your existing pcm to a place with the software already purchased, and people that are familiar with the program to do it.