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RE: OBD-II

To: autox@autox.team.net, jss@marimba.com
Subject: RE: OBD-II
From: DOUG GILL 383-4291 <DGILL@a1.stim.tec.tn.us>
Date: Thu, 25 Mar 1999 07:51:47 -0500 (CDT)
          I wrote:
          >>>All OBD-II vehicles use the same connector and you cannot flash
          >>> an OBD-II diagnostic trouble code (DTC). For example, P0300 is
          >>> a  misfire code and the cars can't flash a "P".
          >>>
          >>>           Mumbles
          
          KeS wrote:
          >> A)  You're wrong.  There are at least two common OBD-II
          >> connector configurations.
          
          Josh wrote:
          >They are actually all the same connector, but have different
          > pinouts. How silly.  So much for standards.
          
          Well, actually, pins 2, 4, 5, and 16 are standardized.
          Pin 2 is the ECM/PCM data.
          Pin 4 is chassis ground.
          Pin 5 is signal ground to the ECM/PCM.
          Pin 16 is battery power.
          
          With the wide part of the connector at the top, the pins are 
          numbered L-R 1-8 and the narrow part on the bottom is numbered L-R 
          9-16.
          
          \ 1  2  3  4  5  6  7  8 /
           \9 10 11 12 13 14 15 16/ 
          
          The other pins are manufacturer specific.
          
          Mumbles


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