2003 civic heat/AC fan isn't working

Hi,

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!
Chicka

 

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.

 

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,
Chicka

 

I would bridge the contacts and see if the fan works. If it does it is
probably the controller.

 

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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

http://www.hondasuv.com/members/showthread.php?t=22777&highlight=fan+transistor
http://www.hondasuv.com/members/showthread.php?t=19456&highlight=fan+transistor
http://www.hondasuv.com/members/showthread.php?t=9563&highlight=fan+transistor
http://www.hondasuv.com/members/showthread.php?t=24506&highlight=fan+transistor

'Curly'

 

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,
Chicka