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Date:         Wed, 1 Jun 2016 12:22:34 -0700
Reply-To:     Neil N <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Neil N <musomuso@GMAIL.COM>
Subject:      Re: VW relay #53, 141 951 253B
Comments: To: Robert Keezer <warmerwagen@yahoo.com>
In-Reply-To:  <1800391772.2530452.1464807697735.JavaMail.yahoo@mail.yahoo.com>
Content-Type: text/plain; charset=UTF-8

Hi Robert.

Track 32 Bentley P. 97.89 shows a "26" junction which is a "plus connection in Digifant harness". That junction also feeds fuel injector +, FP relay 86.

The black junction dot on track 30 is hard to see.

Neil.

On 6/1/16, Robert Keezer <warmerwagen@yahoo.com> wrote: > "the ECU "supplies" negative > to fuel pump relay 85"That's correct, Neil. > The ECU controls the negative ground side of the fuel pump relay at terminal > #85.However, the only load that the #87 ECU relay supplies is to the ECU, to > the power steering pressure switch, and the Idle Stabilizer Control Unit. > The fuel pump relay #86 and the ECU relay #86 is a bridged connection, a > wire connects them so that when the key is turned on, the ECU and the fuel > pump are both switched on, though the ecu then only activates the fuel pump > momentarily to pressurize the fuel rails.86 is a key-on power connection, > and 87 is a load connection only .87 is not used to send power to 86. > Robert1982 Westfalia > > > > > From: Neil N <musomuso@GMAIL.COM> > To: vanagon@GERRY.VANAGON.COM > Sent: Wednesday, June 1, 2016 11:20 AM > Subject: Re: VW relay #53, 141 951 253B > > unless it's a misprint or I'm misunderstanding terms used here, > the way I see it, when engine is running, the ECU "supplies" negative > to fuel pump relay 85 > This is what turns on that relay. > ECU relay 87 sends positive to fuel pump 86 via a main positive > connection in harness. (G1 or 26). Indeed when ECU relay is energized, > it sends positive to fuel pump 86. > Neil. > > On 6/1/16, Robert Keezer <warmerwagen@yahoo.com> wrote: >> Hi Ed, >> There's a diode in the #53, where it's used as the Engine Computer >> relay. >> >> When terminal 86 of the relay is energized (key on ), it activates the >> computer and sends power to the 86 terminal of the fuel pump relay.The >> diode >> allows current to pass in one direction, as the ignition coil also shares >> the computer #86 terminal. >> This from page 97.124 of the Bentley >> >> Robert1982 Westfalia >> > > > > -- > Neil n > > Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca> > > 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy> > > 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/> > > Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay> > > > >

-- Neil n

Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>

1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>

1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/>

Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>


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