CCD (Chrysler Collision Detect) Data Bus protocol
A data bus that was developed before can-bus. It has a very similar structure and can be transmitted by can-transceivers.
A few links on this topic:
https://www.autonerdz.com/yabbfiles/Attachments/ccdandpci.PDF
https://github.com/majekw/sigrok-ccd-pd
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US4739323.pdf
https://github.com/laszlodaniel/CCDLibrary
https://github.com/xerootg/CAN-CCD_bus