Date:         Sat, 7 Dec 2013 13:43:59 -0800
Reply-To:     Neil N <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Neil N <musomuso@GMAIL.COM>
Subject:      Re: making a little headway but need advice
Comments: To: David Beierl <dbeierl@attglobal.net>
In-Reply-To:  <52a38ebc.0e94e00a.7d63.2ac9@mx.google.com>
Content-Type: text/plain; charset=UTF-8

My apologies Steve. The info I supplied from simply looking at the
Bentley diagram was misleading.

Thanks for the correction David! I assumed the white wire from ECU 12
to fuel injectors only supplied a switced ground. I think I understand
what you're saying; this wire switches from + to -  (engine running)
to open/close the fuel injectors.

Neil.


On 12/7/13, David Beierl <dbeierl@attglobal.net> wrote:


> With the system ready but idle you should have B+ on *both* sides of
> the injector plug.  If you don't then there's bad contact at the plug
> (or an open injector coil, of course).  When it runs one side pulses
> down toward ground for the duration of the injector opening.  If your
> Fluke can measure duty cycle you can see that happening.
>
> All the injectors are switched by the same transistor, so if you're
> getting pulses on some lines and not others it's a wiring issue.
>
> Yrs,
> d
>


--
Neil n

Blog: tubaneil.blogspot.ca

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