Results 1 to 3 of 3

Thread: e32 IHKA fault

  1. #1
    Join Date
    Dec 2003
    Location
    Australia
    Posts
    494

    Default e32 IHKA fault

    I've got a problem with a IHKA control unit from a 6/89 735i. Only 3 things on the whole hvac unit are working

    1. The fan works when set to full on
    2. The little yellow light on the front screen demister lights up when the button is pressed.
    3. The interior temp sensor fan runs normally.

    Every other function on the hvac has stopped working. I've read about the dry solder joints on the resistors in the ihka control unit and was wondering if these symptoms could occur because of that?

    I've done some digging with the multimeter and found that everything than runs on the 12v part of the system is getting power but all 5v parts are dead.

    Thanks guys!

  2. #2
    Join Date
    May 2004
    Location
    Japan
    Posts
    9,093

    Default

    A little late, but the problem is your heater sword, which controls the speed of the fan. http://www.bimmerboard.com/forums/posts/355700/

  3. #3
    Join Date
    Dec 2003
    Location
    Australia
    Posts
    494

    Default

    Hi Shogun. Thanks always for your help. It was the hvac computer. I had a spare sword and trying it didn't make any difference. The computer fixed everything up.

Similar Threads

  1. E38/39/36/46 IHKA Details
    By shogun in forum 7 Series BMW
    Replies: 0
    Last Post: 12-30-2006, 02:05 AM
  2. Retrofit IHKA
    By colamangr in forum 5 Series BMW
    Replies: 3
    Last Post: 12-29-2005, 01:13 PM
  3. ihka or ihkr?
    By Paul in NZ in forum 5 Series BMW
    Replies: 5
    Last Post: 10-21-2005, 03:53 PM
  4. displays no fault code - but fault exists
    By romus in forum 5 Series BMW
    Replies: 6
    Last Post: 10-20-2005, 02:32 AM
  5. '91 535 IHKA issues
    By botardtim in forum 5 Series BMW
    Replies: 4
    Last Post: 01-17-2005, 06:49 PM

Posting Permissions

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