[s-cars] AC compressor relay - ground wire question

[chris chambers]

So my AC stops working, tech checks the freon its ok, checks relay
and when jumpering the relay AC compressor kicks on.

He decides it must be the relay, no problemo I steal the relay from
the parked Silver S4. AC doesn't work, hmmm swap relays back and its
the same. Start Silver S4 and AC works fine, swap relays, still works
fine.

Check a couple things with tech, we determine the relay isn't receiving

the grouns signal from the HVAC control unit. So I swap control units,
everything is the same!

So now we're looking at the wire, which I need to determine if it's
damaged and where. It's the brown/green wire that runs from the 
relay to the HVAC control unit.

I start inspecting the wires at the HVAC control unit, looks like there
may be more than one brown/green wire. Is this wire only providing
ground or is there an actual signal?

I'm hoping for a little guidance before I dig in further


Thanks
Chris

Make April 15th just another day http://www.fairtax.org



       
____________________________________________________________________________________
Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail, news, photos & more. 
http://mobile.yahoo.com/go?refer=1GNXIC