Cruise Control HELP!!! The Vacuum Pump...
how can you test it to see if there is a signal coming to it? There are 3 wires going to it. Which one is Ground(-)? Which of the other 2 is the signal/power(+) wire? I think my pump may be shot. But I don't know how to test it properly.
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The brown it's ground and I'm 100% sure on this (brown it's always ground in all the Audi looms I've been looking so far)
You can supply 12v on both the others wires
one will turn the pump on and the other close the valve to build up the pressure
You can look at this for reference sorry but it's in italian:
StefanoLast edited by veneto rs2; 26 March 2010, 15:16. -
If you go on S2central.net you'll find the wiring diagrams in English.
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