[Diy_efi] good reading
Steve Ravet
Steve.Ravet at arm.com
Mon Feb 28 03:40:49 GMT 2005
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________________________________
From: diy_efi-bounces at diy-efi.org
[mailto:diy_efi-bounces at diy-efi.org] On Behalf Of David Cooley
Sent: Sunday, February 27, 2005 9:51 AM
To: 'A list for Do-It-Yourself EFI'
Subject: RE: [Diy_efi] good reading
=09
=09
J1850 is the OBD-II spec as laid out by the SAE
=20
It's part of the spec. It describes the electrical characteristics:
bus loading, conflict resolution, packet format, etc. It doesn't
describe what's in the packets, how to request data, etc. 2 other SAE
specs cover that. Look on the OBD2 page of gmecm (under ECM info) and
you'll see the spec numbers, you can probably find them elsewhere on the
internet from there.
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--steve
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<FONT face=3DTahoma size=3D2><B>From:</B> diy_efi-bounces at diy-efi.org=20
[mailto:diy_efi-bounces at diy-efi.org] <B>On Behalf Of </B>David=20
Cooley<BR><B>Sent:</B> Sunday, February 27, 2005 9:51 AM<BR><B>To:</B> =
'A list=20
for Do-It-Yourself EFI'<BR><B>Subject:</B> RE: [Diy_efi] good=20
reading<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D218455015-27022005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>J1850 is the OBD-II spec as laid out by the=20
SAE</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D218455015-27022005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV></BLOCKQUOTE>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D218455015-27022005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2><SPAN class=3D233453503-28022005>It's part of =
the spec. =20
It describes the electrical characteristics: bus loading, conflict =
resolution, packet format, etc. It doesn't describe what's in the =
packets,=20
how to request data, etc. 2 other SAE specs cover that. Look =
on the=20
OBD2 page of gmecm (under ECM info) and you'll see the spec numbers, you =
can=20
probably find them elsewhere on the internet from=20
there.</SPAN></FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D218455015-27022005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2><SPAN=20
class=3D233453503-28022005></SPAN></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D218455015-27022005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2><SPAN=20
class=3D233453503-28022005>--steve</SPAN></FONT></SPAN></DIV>
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color=3D#0000ff size=3D2><SPAN=20
class=3D233453503-28022005></SPAN></FONT></SPAN> </DIV>
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