• Message length is restricted to 12 bytes, including CRC.
• Employs a multi-master arbitration scheme called ‘Carrier Sense Multiple
Access with Non-Destructive Arbitration’ (CSMA/NDA).
SAE J1850 VPW (variable pulse width): A standard of General Motors
• Pin 2: Bus+.
• Bus idles low.
• High voltage is +7 V.
• Decision point is +2.5 V.
• Message length is restricted to 12 bytes, including CRC.
• Employs CSMA/NDA.
ISO 9141-2: Primarily used by Chrysler, European, and Asian vehicles
• Pin 7: K-line.
• Pin 15: L-line (optional).
• UART signalling.
• K-line idles high, with a 510 ohm resistor ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.