Blower Motor Questions on 2003 Honda Civic

My blower motor quit working and I have pulled the motor and checked it (its good). I need to locate the resistor and the relay switch. I am hoping it is one of these problems. Oh yeah the fuses are fine as well.

by in Phoenix, AZ on February 15, 2009
1 answer 8 comments
ANSWER by on February 15, 2009
There is a relay that operates the heater blower motor in the engine compartment in the fusebox right side looking into the engine compartment. The heater blower relay is the largest relay in the middle of the top or bottom row. Fuse 12 (40Amp) in the engine compartment fuse box supplies power to the relay, fuse 14 (10Amp) in the passenger compartment fuse box must also be OK for the blower to work. Power should be at BLUE/WHITE wire with the ignition key on . BLUE /BLACK gets grounded through the blower motor resistor and heater panel switch. The blower motor resistor is behind the glove box to the left side.
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COMMENT by on February 20, 2009
Thanks for the input. I have checked everything and all seems good. The blower motor is still not working though. When I reconnected it and held in my hand as i turned the key to the on position, the fan jumps just a little and wont spin anymore. This leads me to believe it is the motor since it seems all power is getting to the unit itself. Damn I wish i knew more about electrical than I do. Anymore advice?
COMMENT by on February 20, 2009
Thanks for the input. I have checked everything and all seems good. The blower motor is still not working though. When I reconnected it and held in my hand as i turned the key to the on position, the fan jumps just a little and wont spin anymore. This leads me to believe it is the motor since it seems all power is getting to the unit itself. Damn I wish i knew more about electrical than I do. Anymore advice?
COMMENT by on February 20, 2009
Thanks for the input. I have checked everything and all seems good. The blower motor is still not working though. When I reconnected it and held in my hand as i turned the key to the on position, the fan jumps just a little and wont spin anymore. This leads me to believe it is the motor since it seems all power is getting to the unit itself. Damn I wish i knew more about electrical than I do. Anymore advice?
COMMENT by on February 20, 2009
Your closing in on the problem! remove the fan there are only two wires hook it across the battery with two jumper wires. Be careful initial toque of the motor will make it want to jump out of your hands. The motor may free up, you may find a mouse has built a nest in the air duct, or the motor has failed.
COMMENT by on July 06, 2010
I am having the exact same problem. I removed the motor and connected it directly to the battery and I worked fine. Does this mean the resistor is bad?
COMMENT by on July 29, 2010
I had the same problem before. All the fuses were working and the fan had an initial spin when the car was turned on. I then checked the fan motor by disconnecting it and applying a test battery to the ends ensuring that the motor worked. It worked like a charm. So the only thing I could think of was the resistor. Replaced it and worked. You may just need to replace the resistor, which makes since considering the initial spin and then drop off of potential that occurs. Good luck
COMMENT by on August 24, 2010
Pulled the resistor, like you said, put in a new one, and voila, it worked! Thanks!
COMMENT by on September 11, 2010
It's usually the resistor motor, especially on those 2003 civics. Easy to replace. Just buy the part.
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