Yes, OBD/j2534 refers to many protocols.
In my case I am really only particularly interested in CAN......but
I am trying to find the SAE standard so I can have a read.
J2534 defines the SAE standard. Which explains the programming process, the Software API and the hardware functionality.
I know what OBD and J2534 is and what they are.......but I was hoping to find the documentation that defines specifically how this process works.
Without the doc I can't build any hardware or write any software.
You don't happen to have the doc do you? or know the specifics of the hardware?
There is a programming pin to set a programming voltage?.....do you know what pin this is and what voltage it needs to be set to?
Do you know what the required CAN commands are for reading and writing to the ECU?
As I understand some ECUs are encrypted.......so there is some handshaking that happens before you can read and write.http://www.drewtech.com/support/j2534/index.html
the above defines a little bit of the highlevel API......for their product.
Any help you can provide would be greatly appreciated.....