I am having some issues with my A6. I was wondering if anyone had a relay diagram or could even tell me what each relay was and what it did, for a 2000 A6 2.7T??

 

What relay are you looking for? I know there are some under the drivers side dash. (I have worked on these.) I am pretty sure there are more under the hood. (Never needed to find them.)

A shop manual is a good thing to have....

 

OBTW: the options installed on your car will determine what relays it has and may effect the locations of other relays.

 

Im looking for relay that controls the power to the fuel pump and the spark. I know on past VW's that I have owned they have had a fuel pump relay then a relay that also controls the power to the pump and the spark. If Audis have a relay or sensor similiar to this I think this might be my issue. Cause I had no power in the harness to the pump, hard wired the pump and realized theres no spark too. Any help would be greatly appreciated. The bently manual will take about a week or so to get in and I need to fix this issue ASAP due to a 3 yr old son.

 

Fuel pump relay (J17) is on the "Micro central electric panel" under the left side dash panel. This panel has wire lugs on the bottom of it. It is in position #4 and on mine the relay is labeled "372" on the end... upside down.

The output of the relay is pin 87F (green/red wire) through fuse Fuse S228 (fuse 28, 20a output wire=green/yellow) , a connector (T10ba/4, at the left A pillar) to the Fuel pump (pin 1). The ground is pin 4 on a brown wire.

The diagram doesn't show what energizes the relay or the input for the power.... It also doesn't show any connection to anything to provide a spark.

 

I am looking for what energizes J17 and can't find it. I am pretty sure it is a signal from the ECU. -- I hate these Audi wiring diagrams.

 

Thank you so much for all the help. I am trying to test all the wires now with a test light.