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A4 B6 Avant 1.9tdi 130 AC issues

sabaxter Aug 5, 2013

  1. sabaxter

    sabaxter Active Member

    Good evening guys. Firstly I would like to apologise for further threads on A/C issues. But I've checked all the threads I have come across and still no avail.

    1) The A/C only gives out ambient temperature
    2) ECON light does go on and off
    3) I've had it re-gassed and the pressure is good.
    4) The clutch plate and bolt are in tact and therefor not missing.

    Ive had a good luck tonight and done some electrical testing. Both the fuses in the panel are fine. Im unsure of the relay location although I have a 267 that I got on ebay. Tonight I have done some voltage tests. There is a 14 pin plug on the NS of the engine bay I took a reading there and got just over 12V

    I took the plug of the A/C compressor and did a test there and got under 1V im confused at where the voltage is dropping. On the left fan there is a silver looking electrical box. Could it be this is faulty? Also on each side of the fan assembly there are sensors with yellow plugs, what are these?

    Any help is much appreciated but please can you keep it simple especially if your explaining electricals to me.

    Anyone in Manchester area with a VAGCOM that could assist?

    Thank you all!
  2. willh

    willh New Member

    I have exactly the same symptoms in my A6!

    Collected my car from the garage last week after a re-gas where they gave it a clean bill of health but the output just feels ambient on LO setting.
  3. sabaxter

    sabaxter Active Member

    Same issue here. Im not getting power to the compressor so in summer ill run a feed and if it works ill check the harnes.and power box on the rad housing
  4. desertstorm

    desertstorm Moderator Staff Member Moderator VCDS Map User Audi A4 Audi Avant Owner Group quattro TDi

    You need to connect VAG-COM up and check for fault codes. There are several reasons why it may not be working but all of that is guessing. much easier to fault it correctly.


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