Where is the low pressure switch for the A/C system and which pins do you jump on the high pressure
08-04-2005, 07:44 PM
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Where is the low pressure switch for the A/C system and which pins do you jump on the high pressure
switch to test it?
My Compressor won't turn on after my TB change and I have the whole front end apart again. The green 12v that actuates the clutch is solid as well as the wiring for the pressure sensor (on the condensor) back up to the fenderwall. Now I am even more confused. What other switches are there?
Electric fan works
Compressor/clutch work
wiring for the two are good up to the fenderwall
Wiring for the pressure swith is good
Outside temp gauge reads correctly
Fuse looks good
Belt seems to be tight enough
What am I missing?
My Compressor won't turn on after my TB change and I have the whole front end apart again. The green 12v that actuates the clutch is solid as well as the wiring for the pressure sensor (on the condensor) back up to the fenderwall. Now I am even more confused. What other switches are there?
Electric fan works
Compressor/clutch work
wiring for the two are good up to the fenderwall
Wiring for the pressure swith is good
Outside temp gauge reads correctly
Fuse looks good
Belt seems to be tight enough
What am I missing?
08-05-2005, 12:47 AM
#2
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double check the A/C pressure switch behind the passenger headlight...
also check to see that the wires are OK around it. You may have kinked, disconected or tore one of them when putting the front back on after the TB. I assume that you do have enough freon right? Also check for HVAC fault codes on the VAG.
08-05-2005, 04:00 AM
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Is there another pressure switch behind the headlight? or do you mean the one below it? Also, you
have to take out the climate control head and hook the VAG up to that to get the fault codes right?
08-05-2005, 08:18 AM
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Re: It only shows 0.0 when I do that so I assume that means no faults. Is there anyway to reset the
00.0 No malfunction present. I included a link to the page I got this from in case youwant to probe further...
I think you need VAG-COM to reset it, but unplugging the battery may work.<ul><li><a href="https://forums.audiworld.com/a4/msgs/2299775.phtml">https://forums.audiworld.com/a4/msgs/2299775.phtml</a</li></ul>
I think you need VAG-COM to reset it, but unplugging the battery may work.<ul><li><a href="https://forums.audiworld.com/a4/msgs/2299775.phtml">https://forums.audiworld.com/a4/msgs/2299775.phtml</a</li></ul>
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