MDX back seat blower doesn't work. - Acura Forum : Acura Forums

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post #1 of 14 (permalink) Old 08-28-06, 02:18 PM Thread Starter
rod
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MDX back seat blower doesn't work.

On my 02 MDX, the AC/Heat blower in the console that serves the back seat does not work. I do have lights on the up/down selector buttons and I'm pretty sure that the fuses have been checked. Any suggestions would be appreciated.
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post #2 of 14 Old 08-29-06, 11:37 PM
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The rear blower motor transistor fails on MDX's. Notorious for it. You can get to it if you remove the carpeted trim panel down the left side of the console. Part retails for $85 or so, should be about $70 if you buy it from a dealer that sells parts at wholesale. 79330-S2K-941 TRANSISTOR ASSY.

91 Legend L Coupe 6 spd.
231k miles
14.6@99.1
225 WHP 203 TQ

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post #3 of 14 Old 11-02-06, 06:39 PM Thread Starter
rod
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Bad Transistor

I got the transistor part about 2 weeks ago but just installed it last night. The instructions provided to me were so very helpful. It turned out to be about a 15 minute job. The screen was blocked with lint and probably did cause the failure. The transistor is located in the downstream air from the blower. Now works great. This is a great forum.
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post #4 of 14 Old 03-05-07, 11:32 PM
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I couldve save YOU money

you didnt have to buy the entire piece, my rear ac went out as well but the light would light up on the front ac

all you have to do is open that plastic panel on the side driver panel twist out the main piece, undo 2 screws and carefully pry it open and take the bad resistor off and re-solder the new one back on...it took all of 10mins, the soldering took about 30secs., my has worked just fine over 6 months now

the resistor cost .49cents each + $4.00 shipping!

The place to buy the resistor is:

digikey.com, under their search do a search for:

part # P10920-ND (thermal cutoff 114C 2A/250VAC)

easiest thing ive ever done and you wouldve saved about $80 or so bucks!!!!!

I know its too late for you but for anyone else dont be suckered into buying the $80 piece from Acura, all that needs replacing is a little resistor!
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post #5 of 14 Old 11-05-11, 06:21 PM
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Quote:
Originally Posted by r22r View Post
you didnt have to buy the entire piece, my rear ac went out as well but the light would light up on the front ac

all you have to do is open that plastic panel on the side driver panel twist out the main piece, undo 2 screws and carefully pry it open and take the bad resistor off and re-solder the new one back on...it took all of 10mins, the soldering took about 30secs., my has worked just fine over 6 months now

the resistor cost .49cents each + $4.00 shipping!

The place to buy the resistor is:

digikey.com, under their search do a search for:

part # P10920-ND (thermal cutoff 114C 2A/250VAC)

easiest thing ive ever done and you wouldve saved about $80 or so bucks!!!!!

I know its too late for you but for anyone else dont be suckered into buying the $80 piece from Acura, all that needs replacing is a little resistor!
IT WORKED PART WAS ON BACK ORDER TIL DEC. PART#P10912-ND THERMAL CUTOFF 115C 1A/250AC LITTLE DIFFERNT WORKS FINE
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post #6 of 14 Old 09-09-12, 04:36 PM
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Quote:
Originally Posted by r22r View Post
you didnt have to buy the entire piece, my rear ac went out as well but the light would light up on the front ac

all you have to do is open that plastic panel on the side driver panel twist out the main piece, undo 2 screws and carefully pry it open and take the bad resistor off and re-solder the new one back on...it took all of 10mins, the soldering took about 30secs., my has worked just fine over 6 months now

the resistor cost .49cents each + $4.00 shipping!

The place to buy the resistor is:

digikey.com, under their search do a search for:

part # P10920-ND (thermal cutoff 114C 2A/250VAC)

easiest thing ive ever done and you wouldve saved about $80 or so bucks!!!!!

I know its too late for you but for anyone else dont be suckered into buying the $80 piece from Acura, all that needs replacing is a little resistor!
I replaced the resistor but therear fan stays on in high mode and would not turn off any suggestions would be great thanks
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post #7 of 14 Old 09-07-13, 02:50 AM
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Smile Want to say Thank You here

MDX 2006, 100,000+ miles,
I have an exact problem and did exact what people said it here.
I could not find the screen, because it is totally blocked with very thick of dusts.

Just clean up the screen and changed part # P10920-ND (thermal cutoff 114C 2A/250VAC), got it from DigiKey $74 cents + $5.x USPS 2 days priority mail.

It is working and got a happy Friday, hey people -- Appreciate it.
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post #8 of 14 Old 11-12-13, 01:36 AM
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I've tried that, bought a new transistor and plugged in, turned on the rear heat and all but still no air blowing out? Is there something else wrong? no faulty fuse either. Please help. Thanks.
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post #9 of 14 Old 11-12-13, 01:37 AM
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Quote:
Originally Posted by rod View Post
I got the transistor part about 2 weeks ago but just installed it last night. The instructions provided to me were so very helpful. It turned out to be about a 15 minute job. The screen was blocked with lint and probably did cause the failure. The transistor is located in the downstream air from the blower. Now works great. This is a great forum.
I've tried that, bought a new transistor and plugged in, turned on the rear heat and all but still no air blowing out? Is there something else wrong? no faulty fuse either. Please help. Thanks.
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post #10 of 14 Old 11-12-13, 01:42 AM
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Quote:
Originally Posted by r22r View Post
you didnt have to buy the entire piece, my rear ac went out as well but the light would light up on the front ac

all you have to do is open that plastic panel on the side driver panel twist out the main piece, undo 2 screws and carefully pry it open and take the bad resistor off and re-solder the new one back on...it took all of 10mins, the soldering took about 30secs., my has worked just fine over 6 months now

the resistor cost .49cents each + $4.00 shipping!

The place to buy the resistor is:

digikey.com, under their search do a search for:

part # P10920-ND (thermal cutoff 114C 2A/250VAC)

easiest thing ive ever done and you wouldve saved about $80 or so bucks!!!!!

I know its too late for you but for anyone else dont be suckered into buying the $80 piece from Acura, all that needs replacing is a little resistor!
I got suckered in by buying that whole piece for a $111 from a auto part shop and it still didn't work.
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post #11 of 14 Old 07-30-14, 10:11 AM
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Quote:
Originally Posted by r22r View Post
you didnt have to buy the entire piece, my rear ac went out as well but the light would light up on the front ac

all you have to do is open that plastic panel on the side driver panel twist out the main piece, undo 2 screws and carefully pry it open and take the bad resistor off and re-solder the new one back on...it took all of 10mins, the soldering took about 30secs., my has worked just fine over 6 months now

the resistor cost .49cents each + $4.00 shipping!

The place to buy the resistor is:

digikey.com, under their search do a search for:

part # P10920-ND (thermal cutoff 114C 2A/250VAC)

easiest thing ive ever done and you wouldve saved about $80 or so bucks!!!!!

I know its too late for you but for anyone else dont be suckered into buying the $80 piece from Acura, all that needs replacing is a little resistor!
Help Needed:

I purchased the .49c resistor and replaced the burnt out one. My issue now is that when I start the car, the air constantly blows out the rear. The RR A/C button does not shut it off! When the RR A/C button is on, I can adjust the rear temp, but not the speed of the fan. I have another rear unit (new) but does the same thing......I can adjust the temp but not the speed. Does anyone know the resolve for this? Am I missing something?

Greatly appreciated
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post #12 of 14 Old 02-21-15, 08:21 PM
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fan runs on full

I replaced the thermal link using the one from digikey. The fan then ran on full, and I couldn't control the speed.

I did some more digging and the problem ended up being a short across the heat sink. I had to remove the new thermal resistor, add some heat shrink to the wires (like the old one, it had insulated wires except where the wires were soldered to the board), and re-install it.

Started it up and the fan control worked great!

Thanks for all the help on this!
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post #13 of 14 Old 03-18-15, 07:02 AM
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You can get to it if you remove the carpeted trim panel down the left side of the console.
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post #14 of 14 Old 06-13-16, 02:56 PM
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Thumbs down 2004 MDX - rear no blow

I saw this thread and purchased the blower motor transistor and it's still not working.

Where is the screen located?

Anyone have any suggestions?
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