2003-2007 HVAC Blower Transistor Repair - Page 3 - Honda Accord Forum - Honda Accord Enthusiast Forums

Do-It-Yourself Section This section is for requests for DIY help, not for general technical advice.

Thread Tools Search this Thread
Old 07-15-2018, 12:22 PM
Join Date: Jul 2018
Posts: 1

Hopefully i can revive this thread and get some needed guidance.
My blower motor in my 2004 4 door ex Honda Accord stopped working so i did some googling and found the blower motor transistor was a common problem. I pulled it and found the thermal fuse was shot. I de-soldererd the board and installed a new fuse. When i plugged it back in the blower motor started working but it comes on right when you turn the car on and it only runs at high speed no matter what you do from ac control. It also wont shut off. I checked my relays and fuses but they look good. I am wondering if this is a sign that i messed up my soldering? or if there is something else i should look at?

Last edited by warforpeace; 07-15-2018 at 12:28 PM.
Reply With Quote
Old 07-15-2018, 01:08 PM
TexasHonda's Avatar
Super Moderator : And A Texan
Join Date: Feb 2007
Location: Katy, TX
Posts: 9,621

It appears the power transistor is shorted closed. See attachments.

good luck
Attached Files
File Type: pdf Accord03-06_HVACCircuitDiagram.pdf (426.3 KB, 4 views)
File Type: pdf Accord03-06_PowerTransistorTest.pdf (229.9 KB, 2 views)
Reply With Quote
Old 07-16-2018, 08:13 AM
Join Date: Jul 2012
Location: Kansas City, MO
Posts: 2

Originally Posted by MegaBite View Post
Been looking all over hell trying to find the right thermal fuse. The one I took from mine is 140C ; 2 Amp. All the places I check are not the same and rated for A/C not D/C and nothing at the 2 Amp range. Any help where to go an get one? Thanks
This is not a conventional fuse to protect for over current. It is made to protect against overheating not over current. Select a replacement thermal fuse with a rating close to the original 140C rating and at least 2A. It can be a higher current rating with no problems. Most thermal fuses are used in A/C operated heating equipment but will work for this application.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
hvac blower r and r elgart General Tech Help 3 04-20-2013 10:31 AM
hvac blower motor elgart General Tech Help 6 10-09-2012 03:42 AM
Blower Power Transistor gets hot kevin1517 General Tech Help 1 09-05-2012 10:23 PM
2005 Honda Accord EX Coupe HVAC blower issue brahmabull General Tech Help 2 07-25-2012 12:49 PM
Removing HVAC blower on '91 Accord jtimc7 General Tech Help 1 09-02-2007 08:17 AM

2003, 2004, 79330sdaa01, ac, accord, air, blower, conditioning, honda, hvac, location, motor, power, replace, transistor

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


All times are GMT -5. The time now is 06:07 PM.

© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.