ODB-II Information

[Eduard Anna]

> 
> Felix:  There exist two different hardware protocols for OBD-II.
> 
> One is a pulse-width modulated serial system and the other is a 
> variable-pulse-modulated system.  GM and Chrysler use one system and Ford 
> uses the other.
> 
> Technically, if you build a scan tool to do both protocols, the software 
> is the same.
> 
> There exist Parameter IDentifier codes that are standard for scan tool 
> use, but the individual PID's such as injector pulse width probably 
> change from car to car.
> 
> You really need a copy of SAE HS-3000, which is updated for 1996.  This 
> is the SAE book that outlines the OBD-II protocol, inclusing the pin-out 
> for the connector.
> 
> 
Does anybody knows a source for the SAE documents 
(especialy SAE HS-3000) in Germay or in Europe ?

(I know the SAE-WWW-Server (www.sae.com) but I don't have a Creditcard
 to order it)



Eduard Anna

E-Mail: tiw3edan at rz.fht-esslingen.de