[T3] Ground for Fuel Pump Plug

[Jim Adney]

On 12 Jul 2011 at 23:27, SCS Crewcab wrote:

> Not clear on explanation of whereabouts of the ground wire coming from 
> terminal 19 of the ECU. What I have now is a white wire coming out of a 
> slit in a section of harness that has a black jacket on it. That wire 
> has continuity to terminal 85 of the pump relay. Attached to that wire 
> is an inline (VW OEM) clear connector about 2 inches long. Attached to 
> the other side of the connector is another white wire that is broken 
> off. I can't see any other breaks or openings in that jacket.
> 
> Does the wire from terminal 19 of the ECU and the wire to terminal 85 of 
> the fuel pump relay run in the same bundle of wires or does each run in 
> different bundles? If they run in the same bundle, shouldn't there be a 
> break in that jacket somewhere to the left (towards the ECU) of where 
> the wire to terminal 85 of the pump relay now exits?

The white wire from the black harness is from the "body" wiring 
harness, which carries it back to the relay, as you discovered. The 
other white wire came out of the FI wiring harness, which is grey, 
and leads to the FI brain. I don't think either originally came out 
via a slit, but rather thru a place where one section of vinyl jacket 
overlapped another. The inline connector is the means for making the 
connection between the body harness and the FI harness.

So you need to be looking at the grey (FI) harness for the rest of 
the broken white wire.

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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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