opendiag: RE: [opendiag] Re: Ford OBII PWM

From: Escobedo, Daniel <Daniel.Escobedo@...>
Date: Mon Oct 01 2001 - 17:58:33 CEST

------_=_NextPart_001_01C14A91.EC436E40 Content-Type: text/plain;
charset="iso-8859-1"

Thanks I will look into it ASAP.

-----Original Message-----
From: t.shipman@... [mailto:t.shipman@...]
Sent: Sunday, September 30, 2001 12:47 PM
To: opendiag@yahoogroups.com
Subject: [opendiag] Re: Ford OBII PWM

Hi Andrew,

You might want to have a look at this site
http://www.elmelectronics.com/ they have an ELM320 chip that
apparently will do the conversion for you. There is a very
informative .pdf file that can be downloaded that gives quite a lot
of useful information. They also do a GM version. No good for us in
Europe, but it may help you.

Terry Shipman

--- In opendiag@y..., Andrew Oldenburg <aoldenbu@m...> wrote:
> I too had started looking into a Ford interface, other priorities
have
> taken over. My test vehicles are the 95 non-compliant OBII, which
uses
> the same interface.
>
> I don't think Jeff's interface will work because it is for the ISO
> interface cars. Looking at the schematic, all it basically does is
> provide optical isolation and some level shift to the signal.
>
> A Ford PWM circuit needs to drive/sense the differential signal
from the
> car and also do the PWM to RS-232 conversion. I had conceived of
doing
> this in a HC11(because I have a board) with some added interface
> circuit.
>
> FYI - The only IC I could find for the Ford PWM was made by I think
> ???(I forget), anyways the company wanted an NDA signed to get
sample of
> the part because they made it for Ford.
>
> You can email me directly, I would be willing to share any info I
have.
>
> Andrew
>
> -----Original Message-----
> Message: 9,
> Date: Thu, 27 Sep 2001 10:32:52 -0500,
> From: "Escobedo, Daniel" <Daniel.Escobedo@A...>,
> Subject: RE: Mustang Project (Covers any Ford 1996-2000 vehicle s)
>
> Does anyone know if the interface posted by jeff will work with
Pulse
> With,Modulation (PWM)??? if not has anyone made one? and if not I
will
> help.

To unsubscribe from this group, send an email to:
opendiag-unsubscribe@egroups.com

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

------_=_NextPart_001_01C14A91.EC436E40 Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; charset=3Diso-8859-=
1">
<META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version 5.5.2653.12"=
>
<TITLE>RE: [opendiag] Re: Ford OBII PWM</TITLE>
</HEAD>
<BODY>

Thanks I will look into it ASAP.

-----Original Message-----
 From: t.shipman@... [<A HREF=3D"mailto:t.shipman@=
virgin.net">mailto:t.shipman@...</A>]
 Sent: Sunday, September 30, 2001 12:47 PM
 To: opendiag@yahoogroups.com
 Subject: [opendiag] Re: Ford OBII PWM

Hi Andrew,

You might want to have a look at this site 
 <A HREF=3D"http://www.elmelectronics.com/" TARGET=3D"_bl=
ank">http://www.elmelectronics.com/</A> they have an ELM320 chip that </FON=
T>
 apparently will do the conversion for you.  There i=
s a very 
 informative .pdf file that can be downloaded that gives =
quite a lot 
 of useful information.  They also do a GM version.&=
nbsp; No good for us in 
 Europe, but it may help you.

Terry Shipman

--- In opendiag@y..., Andrew Oldenburg <aoldenbu@m...&=
gt; wrote:
 > I too had started looking into a Ford interface, ot=
her priorities 
 have
 > taken over.  My test vehicles are the 95 non-c=
ompliant OBII, which 
 uses
 > the same interface.
 > 
 > I don't think Jeff's interface will work because it=
is for the ISO
 > interface cars.  Looking at the schematic, all=
it basically does is
 > provide optical isolation and some level shift to t=
he signal.
 > 
 > A Ford PWM circuit needs to drive/sense the differe=
ntial signal 
 from the
 > car and also do the PWM to RS-232 conversion. =
I had conceived of 
 doing
 > this in a HC11(because I have a board) with some ad=
ded interface
 > circuit.
 > 
 > FYI - The only IC I could find for the Ford PWM was=
made by I think
 > ???(I forget), anyways the company wanted an NDA si=
gned to get 
 sample of
 > the part because they made it for Ford.
 > 
 > You can email me directly, I would be willing to sh=
are any info I 
 have.
 > 
 > Andrew
 >  
 > -----Original Message-----
 > Message: 9,   
 > Date: Thu, 27 Sep 2001 10:32:52 -0500,   =

 > From: "Escobedo, Daniel" <Daniel.Escob=
edo@A...>,
 > Subject: RE: Mustang Project (Covers any Ford 1996-=
2000 vehicle s)
 > 
 > Does anyone know if the interface posted by jeff wi=
ll work with 
 Pulse
 > With,Modulation (PWM)??? if not has anyone made one=
? and if not I 
 will
 > help.

------------------------ Yahoo! Groups Sponsor ----------=
-----------~-->
 Pinpoint the right security solution for your company- L=
earn how to add 128- bit encryption and to authenticate your web site with =
VeriSign's FREE guide!

<A HREF=3D"http://us.click.yahoo.com/yQix2C/33_CAA/yigFAA=
/26EolB/TM" TARGET=3D"_blank">http://us.click.yahoo.com/yQix2C/33_CAA/yigFA=
A/26EolB/TM</A>
 --------------------------------------------------------=
-------------~->

To unsubscribe from this group, send an email to:
 opendiag-unsubscribe@egroups.com

Your use of Yahoo! Groups is subject to <A HREF=3D"http:/=
/docs.yahoo.com/info/terms/" TARGET=3D"_blank">http://docs.yahoo.com/info/t=
erms/</A>

</BODY>
</HTML> ------_=_NextPart_001_01C14A91.EC436E40--
Received on Mon Oct 01 08:57:16 2001

This archive was generated by hypermail 2.1.8 : Wed Jan 02 2008 - 00:56:06 CET