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Re: [T3] fuel pump relay ground


On 13 Mar 2005 at 20:00, Dave Pallo wrote:

> Evidently, the brain must control when the fuel pump relay gets a ground, 
> thereby allowing the fuel pump to run. There must be something that signals 
> the brain to provide this ground, but I don't know what...
> What am I missing???

Right, the brain connects that wire to ground whenever the engine has been 
turning over, or the key has been turned ON, within the last second. The brain 
knows the engine has been turning over by way of the trigger points in the 
distributor.

So if you look for this wire to go low, it will only do so within the first 
second after you turn the key ON, unless the you're actually running the 
starter.

That wire from the brain has a junction and a connector just forward and to the 
left of the intake air distributor. If you don't get any results, check that 
connection.


-- 
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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