2003 civic heat/AC fan isn't working

Discussion in 'Civic' started by la Bella, Apr 30, 2008.

  1. la Bella

    la Bella Guest


    I have 2003 civic, and my heat/AC fan isn't working. I've been told it's
    most likely a transistor controller down next to the fan motor. Ok, I
    see it, and the two screws that hold it in place. If I take it out does
    anyone know how to check it out? Oh, dealer wants $64 US for the part if
    it checks bad, but I'd like to repair if it can be done.

    No job, no money, no AC!
    la Bella, Apr 30, 2008
  2. la Bella

    James Sweet Guest

    If it isn't potted in epoxy, it can probably be repaired if you have some
    component level troubleshooting skills. I'd start by testing the transistor
    that actually drives the motor and move up from there.
    James Sweet, Apr 30, 2008
  3. la Bella

    la Bella Guest

    Thank you for the reply, if I was to use a meter on the posts of the
    controller do you know what I should expect ? Can the transistor be
    opened and repaired?
    Thanks again,
    la Bella, Apr 30, 2008
  4. la Bella

    Jim Guest

    I would bridge the contacts and see if the fan works. If it does it is
    probably the controller.
    Jim, Apr 30, 2008
  5. la Bella

    motsco_ Guest


    If these don't do it for you, sign in and SEARCH. It's for CR-V, but it
    should be the same. Parts diagrams (and prices) are at www.slhondaparts.com


    motsco_, Apr 30, 2008
  6. la Bella

    la Bella Guest

    I did this and found the blower seemed just fine. Then I removed the fan
    power transistor and off to the dealer to have it checked out. That was
    something they don't do so I got a quote of $64 out the door US and
    thinking I could get a better price at Murray's or the autozone.
    Murray's wanted $75+tax and autozone $79+tax, so back to my dealer and
    bought the part which corrected my problems.

    Oh, on line I found the part for $41, but with ground shipping of $12 I
    didn't want to wait.

    One other thing about my problem that might help others, with an ear at
    the fan you can hear a click with the fan on when you turn the key to
    on, that may have been why at times my fan worked, but I thought it a short?

    Thanks to everyone who helped me with this,
    la Bella, May 2, 2008
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