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FI diagnostic plug

I have been waiting for someone to mention this, hoping that I wasn't the 
only one who had it.  I'm referring to the diagnostic plug.  My baby came 
stock with it (now that my FI system is gone I no longer have it, of 

Has anyone sat down and figured out a way to use the existing plug to 
perform system checks.  I mean, if it's there why not use it?  I gave the 
Bentley manual a cursory look and saw that the electrical diagram shows the 
connections from the FI and ignition system to the plug so one would think 
you could use it for home mechanic diagnostics.

     Toby Erkson
     '72 VW Squareback 1.6L bored and stroked to 2.0L
     '75 Porsche 914 1.8L for sale
     Portland, Oregon, USA

______________________________ Reply Separator _________________________________
Subject: Re: 1971 VW Type-3 Squareback - desperate for help
Author:  type-3-errors@umich.edu at SMTPGATE
Date:    5/15/97 8:56 PM

This is goo advice.  You should never assume that the PO has all the wires
in the right place.  Is your 71 one of the late ones that had the "Computer
Diagnostic" plug in the LL corner of the engine compartment?  If so, if you
just turn the key on, do you hear the fuel pump run for one second, or does
it run as long as the key is on (engine NOT started.)

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