Date:         Sat, 11 Jun 2011 21:51:59 -0700
Reply-To:     Robert Keezer <warmerwagen@YAHOO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Robert Keezer <warmerwagen@YAHOO.COM>
Subject:      Re: 84 Westy Fuel Pump Problem
Comments: To: "Nirav V. Patel [USA]" <goodbhai@GMAIL.COM>
In-Reply-To:  <BANLkTi=Ysk1qYwPhrpvKbiRiFuqYsxNMDQ@mail.gmail.com>
Content-Type: text/plain; charset=iso-8859-1

Hi Nirav,
 
The ECU controls the fuel pump negative ground side.The ignition switch sends 12 volts to the ECU when switched on.
You can bypass the switch with jumpers. If the ecu is bad, the pump will not activate. You can first jump the pump relay postion, if the pump stays on full-time, then jump the ignition switch.If the pump goes on, the switch is bad. if nothing happens, then it's more likely that the ECU is bad.
Robert
1982 Westfalia

--- On Sat, 6/11/11, Nirav V. Patel [USA] <goodbhai@GMAIL.COM> wrote:


From: Nirav V. Patel [USA] <goodbhai@GMAIL.COM>
Subject: 84 Westy Fuel Pump Problem
To: vanagon@GERRY.VANAGON.COM
Date: Saturday, June 11, 2011, 6:02 PM


I'm a newbie with VW repair and maintenance, but getting better.
Would love any and all thoughts on a problem I have with my fuel pump.

I can't seem to get my fuel pump to do the one sec prime when the key
is in the run position.  Fuel pump runs when jumped with 12v.   I
tested my wires (Relay to Fuel Pump) with a multimeter, and the output
from the relay box to the fuel pump is reading .10 on the multimeter
for the 1sec duration when the key is on the run position.  When the
engine starts I'm getting 12v. I've swapped out my relays and tested
another ECU.  The wiring seems intact.

Today I removed the steering column cover to check the key lock
mechanism (ignition switch?). I was told that this mechanism is
signaling to the ECU. When I pulled out the connector behind the key
lock, this is what I saw: http://goo.gl/bgLcy

Is it possible to jump these wires in order to test to see if the key
lock mechanism is broken?  If it is broken, perhaps it's not signaling
correctly to the ECU. But then again, maybe I'm completely off base
here. Please help.  I'm at a loss.

Greetings from Austin, Texas.

+nirav