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david craig
david craig, Auto Mechanic
Category: Honda
Satisfied Customers: 3077
Experience:  owner/mechanic at 3D Automotive
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I have an honda accord 2007. My inside fan is not blowing

Customer Question

Hi,
I have an honda accord 2007. My inside fan is not blowing air at all. I diagonised the car at honda
deleaership & they mentioned that blower motor & resistor have power.
they found issue in control unit fo the system. control unit fixing is extremenly expensive $$$ for me.
I tried to replaced control unit with used one, but non of used unit worked.
I diagonised teh car again at Pepboys, but mechanic was not sure what exactly is problem. He told that power
was coming to motor but there was some grounding issue so he was trying to find the grounding.
What should I do now?
Thanks,
SHakeb
Submitted: 8 months ago.
Category: Honda
Expert:  david craig replied 8 months ago.

Hi Im david, if the blower motor has power to it and its not blower then the blower motor is bad.

Customer: replied 8 months ago.
ok, but Pepboys mechanic told that the power which blower motor is getting is now exactly the way it should get. The ground terminal was not correct & the other terminal was getting ground. Something like the ground was reversed. I am not sure if I got this one from him correctly but this is what he told.
Customer: replied 8 months ago.
can you reply here as i cannot talk now
Expert:  david craig replied 8 months ago.

i didnt offer the call. the site does that automatically. sorry

Expert:  david craig replied 8 months ago.

what engine do you have?

Customer: replied 8 months ago.
its 4 cylinder LX
Customer: replied 8 months ago.
What should needs to be done?
Customer: replied 8 months ago.
Is there problem in resistor ? As there is issue in grounding.
Expert:  david craig replied 8 months ago.

no, the resistor is not the problem. if the resistor was the problem the blower would still work in the high setting

Expert:  david craig replied 8 months ago.

do you have a multi meter?

Customer: replied 8 months ago.
no, I was to purchase that soon.
Customer: replied 8 months ago.
may be tomorrow
Customer: replied 8 months ago.
what should I need to check. Do you have any diagram?
Expert:  david craig replied 8 months ago.

ok, until then we are pretty much dead in the water. those mechanics at pepboys and the dealers have a lot to learn.

Expert:  david craig replied 8 months ago.

just get back with me tomorrow right here.

Customer: replied 8 months ago.
ok. great. thanks!
Customer: replied 8 months ago.
meanwhile do you want me to test something after I but multi meter?
Customer: replied 8 months ago.
after I buy multi meter?
Expert:  david craig replied 8 months ago.

yes sir

Expert:  david craig replied 8 months ago.

ill walk you through the tests

Customer: replied 8 months ago.
ok.i Think I need to install this app to my cell phone as my car parking is very far away from my apartment.
Expert:  david craig replied 8 months ago.

ok

Customer: replied 8 months ago.
thanks!
Expert:  david craig replied 8 months ago.

ill talk to you tomorrow

Expert:  david craig replied 8 months ago.

checking in to see how its going

Customer: replied 8 months ago.
i got multimeter
Customer: replied 8 months ago.
I need few mins to go to my car.
Expert:  david craig replied 8 months ago.

ok. i need a few also to pull a print

Customer: replied 8 months ago.
Ok.
Expert:  david craig replied 8 months ago.

ready when you are

Expert:  david craig replied 8 months ago.
Expert:  david craig replied 8 months ago.

does the blower motor connector have the same color wires as on the print? blk/blu?

Customer: replied 8 months ago.
Ok. I am leaving now to car . Give me 5-7mins
Expert:  david craig replied 8 months ago.

ok

Customer: replied 8 months ago.
Ok. I m in car bow
Customer: replied 8 months ago.
Let me chk how to open cover to see blower motor
Customer: replied 8 months ago.
Correct. Blower motor has two same color wires
Customer: replied 8 months ago.
Now what needs to be done?
Customer: replied 8 months ago.
Are you there?
Customer: replied 8 months ago.
Customer: replied 8 months ago.
U dere?
Expert:  david craig replied 8 months ago.

soory man. had to walk the pooch

Expert:  david craig replied 8 months ago.

turn the blower motor on. check for 12vdc on either wire

Customer: replied 8 months ago.
Hey, went for dinner
Customer: replied 8 months ago.
You there?
Expert:  david craig replied 8 months ago.

here

Expert:  david craig replied 8 months ago.

you have 12vdc?

Customer: replied 8 months ago.
Ok
Customer: replied 8 months ago.
I havnt checked
Customer: replied 8 months ago.
Now at house. I need to move out again. Give me 5 mins. Once i reach car I will msg you
Expert:  david craig replied 8 months ago.

ok

Customer: replied 8 months ago.
Ok, now i am in car
Expert:  david craig replied 8 months ago.

ok check for the voltage at the blower motor

Customer: replied 8 months ago.
No. Its not showing anything
Expert:  david craig replied 8 months ago.

check the fuses in the diagram

Customer: replied 8 months ago.
Is this correct multimeter settings?
Expert:  david craig replied 8 months ago.

yes but wheres the black lead?

Customer: replied 8 months ago.
Its at bottom
Customer: replied 8 months ago.
This one
Customer: replied 8 months ago.
One more thing, do I need to make fan at full speed?
Customer: replied 8 months ago.
But anyhow value is coming to zero
Expert:  david craig replied 8 months ago.

yes put it on full speed

Customer: replied 8 months ago.
Ok. I will chk again
Expert:  david craig replied 8 months ago.

ok. the meter is set up correctly.

Customer: replied 8 months ago.
Hey David. I checked again.
Customer: replied 8 months ago.
Its showing 14v ,
Customer: replied 8 months ago.
Earlier i connected in wrong way
Customer: replied 8 months ago.
it has power. I connected black wire from multimeter to black wire & other to other
Expert:  david craig replied 8 months ago.

so if it has power on the high setting, go to a lower setting.

Customer: replied 8 months ago.
I checked on lower settings. Its showing the same 14v
Expert:  david craig replied 8 months ago.

well if you have power at the connector and when you plug it in it doesnt work, then you have a bad blower motor.

Customer: replied 8 months ago.
Sorry, there is problem in mobile app
Customer: replied 8 months ago.
i need to login again in website
Customer: replied 8 months ago.
adding to your comment, honda service people also said same thing to me that power is coming but also motor is working fine. Is that possible?
Is there something motor is grounded?
Customer: replied 8 months ago.
Are you there?..
Expert:  david craig replied 8 months ago.

the motor grounds to the case. the ground for the circuit is thru the relay. if you wantyou can cut a wire and strip the ends and add a ground from one of the mounting bolts for the motor and run it to the cassis any where near the motor.

Customer: replied 8 months ago.
I am really not sure how to do that
Customer: replied 8 months ago.
But do you feel its grounding issue?
Expert:  david craig replied 8 months ago.

did they put 12 volts to the motor and saw it run?

Customer: replied 8 months ago.
Honda service never show how they fix
Expert:  david craig replied 8 months ago.

ok, the motor is being grounded thru the resistor on all the fan settings except high. plug the motor back in and turn it on high.

Customer: replied 8 months ago.
Ok. I did
Expert:  david craig replied 8 months ago.

with the key on, did it work?

Customer: replied 8 months ago.
No
Expert:  david craig replied 8 months ago.

then the only thing it possibly can be is the fan switch. thats it.

Customer: replied 8 months ago.
But how the fan switch will be an issue if motor is receiving power?
Expert:  david craig replied 8 months ago.

which means you need to replace the control panel.

Expert:  david craig replied 8 months ago.

the motor is receiving power thru the fuses and relay

Expert:  david craig replied 8 months ago.

its not recieving switched ground from the fan switch.... look at the print. each position.... the switch is grounded.

Expert:  david craig replied 8 months ago.

do not over think it anymore. the panel needs replaced.

Customer: replied 8 months ago.
even though fan is getting power from relay, fuses, still it will not work because the fan switch is not grounded. So what is function if relay ground. I thought that would have worked. Jaut curious to know to convince my self
Expert:  david craig replied 8 months ago.

the relay ground is there to energize the relay coil to pull the relay contact closed to supply power to the blower motor. which it is doing

Customer: replied 8 months ago.
Ok. You are more expect. Its complicated for me.
So you dont want me to test any motor ground or to apply 12v to motor if its working or not?
Expert:  david craig replied 8 months ago.

the operation of the motor is control by the fan switch through the resistor on all settings except hi. each switch position supplies the operating ground for the blower motor speed.

Expert:  david craig replied 8 months ago.

no. replace the panel

Customer: replied 8 months ago.
Ok. Now panel replacement will cost me $1600 excluding tax if I do it from Honda service.
& if I do it by myself, they problems Are I am not sure if I order part which Honda guy gave me part # will work or not. So part exact cost is $650 if I purchase by myself
Customer: replied 8 months ago.
38; electrical parts are non refundable
Expert:  david craig replied 8 months ago.

thats a bunch of crap. get it off ebay

Customer: replied 8 months ago.
Now thats another issue I am struggling with. I ordered part from ebay from supplier called originalcaraudio in cheap, they send me a part whcih it didnt worked. They send me replacement part , but still it didnt worked
Customer: replied 8 months ago.
Now I am thinking if Honda is making every year or every model control panel unit different which it doesnt fit if its not matching
Expert:  david craig replied 8 months ago.

http://www.ebay.com/itm/03-04-05-06-07-HONDA-ACCORD-CLIMATE-AC-CONTROL-RADIO-CD-4DR-SEDAN-2-4L-A-T-/162247450561?hash=item25c6b39fc1:g:3ZwAAOSwn7JYCMsh&vxp=mtr is that your panel?

Expert:  david craig replied 8 months ago.

you are protected from ebay when a part doesnt work.

Customer: replied 8 months ago.
Not eactly, i will send you image
Expert:  david craig replied 8 months ago.

ok

Customer: replied 8 months ago.
Customer: replied 8 months ago.
Could you kindly help me David to find correct part from ebay.
Customer: replied 8 months ago.
Its single module climate control. Single disc. I dont care if radio doesnt work.
For accord 2007. Without anti thief
Expert:  david craig replied 8 months ago.

i will look tomorrow. its going on midnight. im whooped. i talk to you tomorrow brother,

Customer: replied 8 months ago.
Ok. Thanks for todays effort. Nice!
Customer: replied 8 months ago.
Bye
Expert:  david craig replied 8 months ago.

pull your panel out and get me a part number in the meantime.

Expert:  david craig replied 8 months ago.

you're welcome

Customer: replied 8 months ago.
Ok. So that panel has lots of part numbers.
I will give you them tomorrow.
Expert:  david craig replied 8 months ago.

ok.

Expert:  david craig replied 8 months ago.

any luck?

Customer: replied 8 months ago.
Ok. Give me few mins. I will share part numbers
Expert:  david craig replied 8 months ago.

ok

Customer: replied 8 months ago.
Control panel number based on my VIN#: 39178-SDA-A11ZANumber written on my actual car part tuner: 39050-SDA-A110-M1
Expert:  david craig replied 8 months ago.

ok, ill be back on in an hour, gotta get out of this shop

Customer: replied 8 months ago.
ok
Customer: replied 8 months ago.
Hi
Expert:  david craig replied 8 months ago.

http://www.ebay.com/itm/Honda-Accord-Single-CD-Player-Radio-Manual-Climate-Control-Panel-03-07-OEM/112113669657?_trksid=p2047675.c100011.m1850&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D39836%26meid%3D5a470baa766f482c916037857bdb9930%26pid%3D100011%26rk%3D1%26rkt%3D10%26sd%3D331757566904

Customer: replied 8 months ago.
this control panel is coming from 2003 accord. Whether this will work?
Customer: replied 8 months ago.
38; also part # is exactly not matching
Expert:  david craig replied 8 months ago.

it says for 03-07

Customer: replied 8 months ago.
But most of time its not guaranteed it will work.I will ask him if it will work for my car or not.
Expert:  david craig replied 8 months ago.

you are protected through ebay if it is wrong.... buy the part quit being so paranoid. it will work! . please accept the answer and leave me a 5 star rating for my assistance. have a good weekend.

Customer: replied 8 months ago.
ok. thanks!
Expert:  david craig replied 8 months ago.

you bet

Expert:  david craig replied 8 months ago.

any update?