Originally Posted by
Creton
I have a 2019 Ram Classic that I am planning on tuning. I have an updated VCM Scanner Suite and a new MVPI2 Pro. I found the Smart-Access behind the drivers kick panel and install the Smart-Access cable. I then tried to gather info to read out the truck and kept getting "Data Protocol Failed". I could initialize the scanner and get it to work, but I couldn't get the PCM to read out.
Has anyone ran into this issue before? Causes? Cures?
Thank you to all the community for all the pointers,
Creton