prometheusg

I know there are several people working on custom interfaces for their carpc's. I wanted to start a list of resources that are available for writing software to interface with OBD-II.

This is a good pdf on the API: http://www.ghg.net/dharrison/OBDScanAPI.PDF

Here's an alternate explanation of the API: http://www.obddiagnostics.com/obdinfo/info.html

List of applicable standards (SAE books are expensive, but my library has 'em!):

• J1978 - SAE-established standard for OBD II scan tools
  
  J1979 - SAE-established standard for diagnostic test modes
  
  J2012 - SAE-established standard accepted by EPA as the standard test report language for emission tests

Trouble codes (OBD-II and non-OBD-II): http://www.troublecodes.net/technical/
and http://www.obdiicsu.com/Docs/DTC/DTCData.html

For those working at the hardware level: http://www.elmelectronics.com/thehome.html#ELM320

Some more hardware fun: http://www.obd-codes.com/howto/index.php

What other resources (standards, SDK's, libraries, tutorials, etc...) do you know about?

MP3Car.com

 

DavidL

J2534 - SAE established standard for "Pass through Reprogramming" of new vehicle ECUs through a generic hardware device. Flash programming files are available via each OEM, usually via their pay to use web site or via CD subscription.

prometheusg

Scan Tool: http://www.scantool.net/obd_information.htm

Looks to me like the same API as the others...From what I can tell, they all use the same API. Someone please correct me if I'm wrong and post the API.

esteban2

Hi!!!!



I need your help please!!!!

I am writing code in Visual Basic in order to communicate to the ECU with ELM interface. I don’t know very well how to write and read the commands I have to send/receive to talk to the ECU.

Could you help me please?

I’ll appreciate your help!!!

Regards


e-mail:esteban.trinidad@tigo.net.py
Esteban

MP3Car.com