Date: Thu, 9 Oct 2008 20:50:41 -0700
Reply-To: "B.J.R." <beer_eighty@YAHOO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: "B.J.R." <beer_eighty@YAHOO.COM>
Subject: Re: Technical question re: Injector firing signal
Content-Type: text/plain; charset=us-ascii
I would open the case of the ECU and check pin #1 from inside
provided that you have done checking from outside. If you have
a digital VOM you can measure AC voltage on pin #1 from inside.
Start from a higher range then switch to lower range until you
get a reading. You should see a few volts up to 10 or 15 volt.
If it is zero that apparently means trouble there.
----IM GONNA GO TRY THAT NOW. SOMETIMES WHEN ONE HAS BEEN STUCK ON A PROBLEM FOR A WHILE,
THE OBVIOUS IS OBSCURED
If you have a scope it will be the best tool to see the signal.
--A SCOPE???
Check all your ground strips. It could be a grounding issue.
---REGROUNDED ALL GROUNDS, REAR COMPARTMENT, ENGINE BLOCK, TRANNY, BATTERY,
If you can find an ECU to try it will tell if it is the culprit.
---IN THAT PROCESS, BUT ILL CHECK ECU #1 FROM INSIDE -OR- THE BACK OF THE ECU CLIP FIRST
Or you can take your ECU to try it on another van.
HARD TO FIND AN 82 ROUND HERE.
David
--- On Thu, 10/9/08, B.J.R. <beer_eighty@YAHOO.COM> wrote:
> From: B.J.R. <beer_eighty@YAHOO.COM>
> Subject: Re: Technical question re: Injector firing signal
> To: vanagon@GERRY.VANAGON.COM
> Date: Thursday, October 9, 2008, 6:09 PM
> Here IS A diagram of the system
>
> http://s417.photobucket.com/albums/pp260/volksproblem/?action=view¤t=PA040039.jp
>
>
> I have tested continuity in ecu wires pin #
> 1, 13, 15, 14, 32, 29, 33, 10,5, 16, 17, 20, 4,
> Ox sensor
> 4, 8, 6, 7,
> ignition control
> 2, 5, 6, 3, 1, 4
>
> All are acceptable range.
> gave all wires motion to check for loose or weak
> connections.
>
>
> HOW DO I CHECK FOR SIGNAL FROM IG COIL TO ECU #1 ???
>
>
>
>
> ----- Original Message ----
> From: Scott Daniel - Turbovans
> <scottdaniel@turbovans.com>
> To: B.J.R. <beer_eighty@YAHOO.COM>;
> vanagon@GERRY.VANAGON.COM
> Sent: Thursday, October 9, 2008 5:57:33 PM
> Subject: Re: Re: Technical question re: Injector
> firing signal
>
> do you know how to check continuity with a volt-ohm meter ?
> essential to checking wiring harness continuity.
> the less expensive ones, analogue, start at under 5
> dollars- made in china
> of course.
> Digital volt-ohm meters, which are far more
> capable.......like for checking
> oxygen sensor output .......
> cost more of course. Recently my 20 year old one died -
> Radio Shack's best
> one was 70 bucks I think.
> Scott
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