Results 1 to 4 of 4

Thread: Question for all aircon/electrical experts

  
  1. #1
    Status
    Offline
    achilles2's Avatar
    AOC Newbie
    Join Date
    May 2009
    Posts
    18
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)

    Question for all aircon/electrical experts

    Hi,

    Iíve got a V reg 1.6 8 valve Astra and the condenser fan (the one at the front of the engine) doesnít come on when the air con is switched on.

    Both the main engine fan and the condenser fan run OK when the engine gets hot so I know the fans are OK, and Iíve also Iíve changed the fan control module.

    Can anyone confirm when the air con condenser fan is supposed to come on and if it is controlled by the air con pressure switch or not as I canít see what else is causing the problem.

    Also the last time I had the car serviced it had a P1540 error code but the mechanic wasnít sure what it meant. Could this indicate a faulty air con pressure switch?

    Thanks

  2. #2
    Status
    Offline
    Mark T's Avatar
    AOC Obsessed
    Join Date
    Feb 2006
    Posts
    1,934
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    The fans only come on when required, either due to coolant temperature or AC pressure.

    The pressure switch signal is Pulse Width Modulated, and must be between 1.5% and 98.5% or code 1540 is stored.

    It substitutes a value of 1.8 Bar, so the AC will still work.
    How Tos . Parts For Sale
    The two most life changing experiences you'll ever have. Finding Jesus, and having a baby.

  3. #3
    Status
    Offline
    ScottM_SMS's Avatar
    AOC Premium Member
    Join Date
    Jul 2009
    Posts
    324
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    P1540 = AC pressure sensor fualty. From auto data book

  4. #4
    Status
    Offline
    larscapaldi's Avatar
    AOC Newbie
    Join Date
    Oct 2008
    Posts
    9
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    how can you check these error codes?

Similar Threads

  1. Aircon fan question as aircon gone funny
    By tillyastra in forum Electrical
    Replies: 8
    Last Post: 14-06-2008, 11:52
  2. Calling all Aircon experts........
    By the gunner in forum Electrical
    Replies: 5
    Last Post: 09-06-2008, 12:41

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •