Freightliner HVAC blower motor. troubleshooting, diagnosis, repair

[@DIYSEMI]

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[@robertkimaryo7178]

My fan is stuck on, I can’t switch it off, ac works but the speed don’t change. Anyone with a solution?

[@robertkimaryo7178]

After watching this, I changed blower heater but that did not solve the problem.

[@vittorioimb2928]

@@robertkimaryo7178 I used to have the same problem you have sir. It was the temperature control unit A/C Heater Control Panel. So I went to a local junk yard and bought one from there. It works like how it supposed to.

[@raynellbright5298]

Goodmorning thanks for your help, I took this stepper switch out,how can I test it? I Took it apart except the wire connection,it vibrated, I manually opened and closed the vent doors,the shift doesn't turn on the stepper is that normal???

[@babbubajwa11]

I installed new blower motor and new connector wire and new control panel recently on my columbia 2007. When i start my truck sonetime blower works sometimes not, then i have to move the connector up n down then it starts working, but whenever i turn off my truck this problem keeps happening. What could be the problem, any ideas? Thanks

[@JoseFernandez-zt5xs]

Thanks a lot you saved me a lot of time my blower was bad.God bless you.

[@ToeKnee-vl4ky]

Wow thanks alot brother, saved me alot of time and money especially on this cold day.

[@williamreeb5000]

I have a glider too. This truck is terrible. You are correct about the money you need to drop into a glider to run right. Thank you for the video, it helped me to fix my a/c.

[@spqr3955]

You just saved me a bunch of money. Tiny green unlabeled fuse. Didn't even look blown but I changed it out anyway and presto. Now it's 1am and I finally get to go to bed. Thanks

[@DIYSEMI]

That's what it's all about !

[@nya021081]

Damn!!! Just came from Freightliner after buying a 360.00 dollar control panel…. Fan didn’t come on. Watched your video pulled the 30 amp fuse out and put back in !! Everything is all good now. Thanks

[@rolandacs9936]

You just saved my ass 😂 I bought the blower motor and my tought was exacty. I am happy with the outcome anyway. Appreciate the video.

[@coolnessnation]

I sincerely appreciate this video so much. You saved me from going and purchasing a new blower motor. My unmarked fuse went bad and I would have never guessed what the issue was if I had gone out and purchased the new blower motor. God bless man! Thank you

[@DIYSEMI]

Great to hear!

[@jerrystalzer1350]

Thank you I had to replace my unmarked blower motor fuse myself that works thank you very much for the video.

[@christopherstewart1368]

Hello my Guy... I never left a comment on anything but I have to thank you so much I was frustrated with this problem on my 2017 glider and come to find out it was just like you said I had a bad relay i bought a $226 blow a motor and pigtail that's going back tomorrow thank you so much God bless you

[@oladoyle1]

Thank you for your video. My blower fan stopped working about a year ago after spending lots of time and money to fix it, I gave up. I came across your video and followed it step by step and found the fan motor harness disconnected. Thanks for your help.

[@shop-k3p]

GLAD YA FOUND IT! THANX FOR SHARING.

[@ronlahaie2575]

Thank you. I looked for the unmarked fuse but I couldn't find them. After your video I found a relay that someone put there instead. Removed and installed both fuses and it worked.

[@ccrider2535]

I want to say thanks a whole lot for this video I am going through the exact problem right now not getting fire through the main wiring that goes to the blower I will look at those two fuses that are unlocked the 30 and the five they are working right now right now my main concern is that I am not getting fire to the wire that goes to the blower before I will have to go and wiggle the wire and then the blower will blow now it won't do nothing but just watching your video open my eyes I really appreciate this video thank you a lot now I kind of have an idea what to do and especially the reset part Sometimes all it takes is even reset

[@adub_mafia9532]

Thank you!!!! I’ve been dealing with no ac for two years!!! Thank you brother!!!!!!!

[@carloss9360]

I changed my motor just by following this video step by step. Thank you very much.

[@ice-cold8827]

I got a blower motor and ac control panel that I didn’t need because freightliner for got to mark a 5am, 30 am fuse. I was almost about to take the truck to the dealership.. thanks man you kept some money in my pocket..

[@toddhenkelmon1599]

HUGE THANKS!! I have a 2015 Columbia and the blower motor stopped working. It was that 30A unmarked fuse... only it had a loose connection. When I wiggled it, it started working again, but the base the fuse plugs in to had to be replaced. I also had cleaned the entire panel, as it was very dusty and grimy. I would also suggest anyone else having problems with their blower to clean the entire fuse panel as well as to avoid any future maintenance issues. I bought this tractor only a couple of months ago used and still getting to know her LOL but man I tell you that saved me a trip to the shop I'm glad I found your page. 👍🏽👍🏼

[@MrKWmechanic]

You sir are a gentleman and a scholar, and there’s damn few of us left. Great Video🤙

[@douglasgeigley8786]

Thanks for the video. I checked the fuse you needed to change and now I can have a/c again next week!! Thanks!!

[@leejohnson9152]

Thanks, your video helped me out a bunch, I wiggled the 5 amp and 30 amp, it was the 20amp fuse, thanks again! 👍🏿

[@Starkeyfamilyfixing]

Great video ! I have a 2007 Columbia that I bought in 2008 , it now has 1 million, 353 thousand miles on it now . Thanks to the problems over the years I know this truck front to back lol 😂. I think you did a great job of figuring it out , I always like hearing people trying to save their money, the dealership around me charges $148 an hr. So I will do everything myself. You deserve a subscribe so I give you one.

[@DIYSEMI]

thanks, been watching your channel for a while. it's very satisfying to figure something out!

[@moay2k775]

Thank u brother, u save a lots of money when mentioned those little fuses 30amp and my 5amp was missing I putted and it works. Thank u

[@DIYSEMI]

Nice

[@mseibert3403]

thanks one of my drivers "used a 30 mini in the storage slot" to check the right hand window controller that fixed that! then next day called " hey my cab blower in not working and neither is the ac compressor,," never once said anything about the moving of the 30amp fuse.. I have the complete service manuals 375 bucks,, not one word about the area with the 5 and 30 amp fuse it is marked 60 and 60x optomized idle,, in service books . YOUR video was a great help thank you for the effort to share ! Mike S.

[@DIYSEMI]

Thanks....your comment makes it worthwhile to do this!

[@Fegog13]

Thanks a lot same thing happened to mine…your video save me a lot of money…

[@thomasshirley5046]

Thank you so much your a blessing from God and just saved me a lot of money thank you. Mine was doing same exact problem blower motor went bad so I replaced it, still wasn't working so I I tried replacing a/c switch blower 127 dollars still not working so I watched your video that you God bless you it was the hidden green 30 amp fuse crazy I replaced fuse now my blower works. Thank you sir lots of gratitude.

[@clearseriously2184]

Thanks bro after taking out my blower motor and testing it my problem was my relay I have a 2002 Columbia.

[@garythecarhauler9719]

Had exact same thing happen. Saved me hrs of troubleshooting. Thanks

[@justinbouman856]

Thanks a ton! Have no idea how much headache you just saved me! The 5 and 30amp fuses were both pulled out from previous driver. Now it all works, thanks again!

[@MisfitMills804]

BRO AMAZING VIDEO‼️ VERY INFORMATIVE AND TRANSPARENT 🫡‼️ YOU ARE THE REAL TRIPLE OG‼️‼️‼️‼️🏆

[@kingwayde5975]

I must say I know you comment on how much money you would've spend at the dealer if you had take it there but theres no price tag on the INFORMATION you discover from doing it your self an that's the key part about you making this video good stuff love your videos very informative

[@travisgoldston3876]

Thank You! Our problem was the unmarked fuse. Fuse was missing entirely, we wouldnt have known that if it wasn't for your video! Well done and thank you again!

[@DIYSEMI]

Awesome

[@tonypaul2793]

You are my new best friend. Thank you so much. All it was on mine was the 30amp fuse. Thank you again

[@DIYSEMI]

Glad I could help

[@lambsbaaa]

Thank you we have been without air in Wa. for 5 days. it was the fuse.

[@jg3362]

You save my life man It was well explained ....it worked for me Thanks 😊

[@maksenmadi5702]

Thank you very much 😊 . My truck has same problem.im going tomorrow to check the fuse. Good job.👍

[@tatt2123611]

Thanks for the video. Was a big help. I did however end up pulling my motor out before I watched the whole video and it turned out to be the little 30 Amp fuse 😂

[@GottSegneDich]

“I have a lot of money into fixing this truck...there will be plenty more videos like this.” 😂 You speak very well for video. Props

[@DIYSEMI]

Thanks 👍

[@geraldoreyes4734]

Thanks for this video I come to my truck this morning and find out no fan blowing watch out your video and bingo the on market fuse was blowing

[@traviscain1891]

Took a minute to fix it the fuse you spoke of was blown tks so much for what you do

[@destinyshelton7420]

This guy helped me dearly much respect

[@carlt8976]

Finally I have an answer to my problem. Thanks

[@jairoalbertolara745]

Really good I bought a new blower and did not work I did check the two mark fuses until I see your video and get me going again Thank you very much

[@eyasuandarge2007]

Hey I can’t thank you enough that was exactly my problem but after I bought a new blower I should have watched ur video thanks anyways.

[@DIYSEMI]

Glad it helped

[@alexsalamo7984]

You have no clue how much this video has helped me. I do port work so at times I’m sitting for quite some time, with no ac for the last two days. I Swapped the fuses and it’s running great. Apparently someone had the wrong fuses on the pdm. Thanks bud

[@chozalski]

Thank you for your video. I had a similar issue. Someone had removed the unmarked 30A fuse for the blower motor. On a side note, your truck is wired correctly. If you look at your wiring schematic again 12V positive is on terminal #4 and ground is on terminal #3. The electrical plug has small numbers labeling each terminal location. Even though the schematic is drawn showing the positive and ground wires on the edge of the plug, you have to reference the terminal number to find its exact location. Thanks again.

[@DIYSEMI]

Hmmm I didn't see any numbers on there. I will look again, thanks!

[@reezee412]

You saved me so much money..thank you

[@javiercabello3814]

Thanks for video very helpful Javier from Odessa tx

[@KT-il8vn]

Tons of benefits watching this video. You have my subscription!

[@christhinksit]

Exact problem here in a Coronado! Thanks boss man!!

[@luzdelnorte5862]

Thank you so much for saving me the repair cost

[@DIYSEMI]

Glad to help

[@todddusek4574]

Thank you - Helped me fix my 2007 Columbia

[@tonil.8758]

I have a 06 Columbia and my HVAC control module nor my blower work... I cannot see/find the 2 fuses on the lower left side of the PDM... where were yours? I don't think the control or the blower is bad, I think it's just a fuse... but I can't find the fuse for it - any ideas?

[@davidwatson4530]

If you look at the diagram the battery+ and ground are pin 3 and 4. If you look at the screen at 12:34 you can see the pin numbers on the diagram. In a 6 pin plug these would be the center two terminals. The diagram was right. But you should always verify powers and grounds before replacing components.

[@tshaunscales525]

Thank you so much for a very detailed video.

[@noyou3750]

I fing love you I have been having problem with the same model for the same reason

[@cristiancarrion4695]

thank you so much you just save me a ton of money

[@vladizlatko]

Thank you for the help! Great video!

[@Acts238Church]

Lol, ive got the same truck.. looking forward to watching the rest of your vids..

[@DIYSEMI]

Thanks... We need a support group called 'SCREWED BY SCHNEIDER '

[@briant7067]

Thank you for sharing! Happy New Year!

[@widny111]

Awesome video.

[@traviscain1891]

Thank you so much for this will try this today mine is doing the same thing

[@CashisKingtrucking]

Very informative

[@adammoney2610]

Thanks for the easy fix

[@melvinbaymon8709]

Great video!!!

[@swampfish1317]

Dude you just saved my life

[@DIYSEMI]

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[@diegomagallon321]

Hello I have a question at 12:39 My sleeper blower not working the wiring is the same for the pins: #3 is ground #4 is 12 volts dc #6 is my variable speed control about 2.29-5.75volts from off to high speed #1 is the feed back which I’m getting 5.002 volts consistently. Is this correct? This is what I’m getting. I’ve replace the blower with its resistor that comes with it but no luck. Thank you

[@1bvanzalen]

Excellent video as always. On my 2010 my blower works but I have no air coming out of any of my vents. Where do I start?

[@demandtransportationtrucki8149]

Learned a lot thanks

[@grob7453]

My little freightliner single axle dump truck blower quit and the only thing I found bad was the ground terminal at the motor but it still doesn't work.can this be reset like the semi tractors

[@babbubajwa11]

I installed new motor and new connector wire on my columbia 2007. When i start my truck sonetime blower works sometimes not, then i have to move the connector up n down then it starts working, but whenever i turn off my truck this problem keeps happening. What could be the problem, any ideas? Thanks

[@kevinbelmont3616]

Did you ever figure out your problem? I have the same type of problem!

[@harmeetjasmeetsandhu4219]

My blower in the sleeper of my 2005 century would work only on full speed and then stopped working all together . Put new blower motor in and nothing happened. What could be the problem?

[@DIYSEMI]

Watch the video

[@SuperSteve702]

??? I have a 2016 freightliner cascadia automatic. Before I had valves adjusted, tune up and PM I was getting 7.0 mpg now im only getting 6.6 . Would you have any idea of what could cause this?

[@DIYSEMI]

An improper overhead adjustment would be my first thought...if thats all they did. Did they possibly flash your software without your knowledge???? It happens, maybe they thougt you were do for an update.

[@SuperSteve702]

@@DIYSEMI idk ill have to call freightliner and ask

[@LubersonOscar509]

Thanks my man very helpful video

[@antony12820002]

Thanks final I got to fix my ac

[@jasvirsinghpattar8332]

damn You unmarked fuse. Huge thanks.

[@madarali6086]

This really helped me Thank you so March.

[@michaelbritton2331]

hi driver thanks for you time and effort that you invest to help us out here.i have an 03 columbia I can't get my blower motor to work in my sleeper.i checked my fuses and plugged in anew blower motor won't turn on.i am getting power at the harness under the bunk.any suggestions is appreciated thanks..

[@DIYSEMI]

Could be a bad ground wire...also test the voltage on the speed control wire whle turning the fan switch see if it changes. fan could be in portection mode

[@michaelbritton2331]

@@DIYSEMI thanks for the reply I will check those leads out have a great day

[@shaunward4768]

Helpful video

[@badhabit3737]

I have a 2014 freightliner Cascadia. The bunk blower motor is on full blast and all the time.. Is the resistor built into the blower .?

[@DIYSEMI]

yes

[@AmrikSingh-rw6ew]

Great work knowledge have no cost . you can'nt buy it from .

[@elizabethmejias5148]

Hello my freighliner century 2006 stop working ac/ then the wipers and the long distance light what to do ? I check all the fuse they are ok

[@JuanCruz-xy4pn]

So my blower is working it’s just not blowing there the vents. I have the ax going but even if I put on heat it don’t blow heat.

[@DIYSEMI]

blend door probably isnt working

[@elchavezSv]

I just got the code AC 200 any idea ? It’s Columbia Gilder 2011 . 12.7 .Detroit .

[@DIYSEMI]

you will have to google that code

[@TEEKAYML]

Maaaaannnnnnnnnnnnn…………. LIFFFEEEEEEEEE SAVERRRRRRRR !!!!!!🎉

[@Omarfure]

thank you so much , great tips

[@makincash3337]

Great video thanks

[@dawaynewall4930]

I have 07 century I put a new AC compressor new dryer got it charged on dash it says hvac bad 146s010 12 the compressor not engaging please help thanks

[@johnny7121]

so, the blower in the cabin stopped working all of the sudden, (the bunk one works fine) in the cabin, I can feel the AC working properly too, but not blowing, even though I crancked the thing to speed 8, any idea?

[@DIYSEMI]

blower is probably out...check the fuses first.

[@johnny7121]

@@DIYSEMI and now my bunk doesnt blow cold air, I'm sweating like a pig

[@Mradm86]

Thank you!

[@sunwaterflowz]

Good Job

[@shrek2183]

Thanks brother.

[@Otw33]

I got columbia 2005 heat control switch recirculation button flashing and air not blowing?

[@Otw33]

I got 12 volts but my hvac switch not working and blinking light

[@dseli8779]

My defroster button won't turn off even if the blower isn't on it will stay on. Once I start the truck a few second later the light goes on

[@palma2289]

Just an FYI that relay you were checking is for the A/C compressor not the blower motor

[@babbujathol143143]

I have 2005 Freightliner century can’t find those fuse 😢😢

[@jasonwickens0813]

Fuses not labeled due to aftermarket items, glider kit install. PDM has more slots for add ons. SCHEINDER tech did not make note or obviously label. Yes at a dealer this job would have been every bit of 1500 to 2200. More on high end. Dealers have been using C techs due to mechanical tech shortages.

[@DIYSEMI]

yessir. everything is big $$$$$

[@harryjohnson9840]

Hi my cab blower motor won’t turn off any ideas thanks

[@Mannymac25]

Thanks for video next time better to test if working before mounting blower back in place in case something wrong

[@DavidFernandez-iu8sm]

How about if your fan works only it don't turn to heat setting to warm the trk ??? What does that mean ?? It keeps blowing cold air..

[@DIYSEMI]

do you have shut off valves for the heater core that need to be turned on? or it could be your blend door isn't moving...bad signal or motor on it

[@DavidFernandez-iu8sm]

@@DIYSEMI heater valves are open I tried missing with blend door but nothing.. might have to check fuses..

[@Davefromwisconsin]

I have a 2016 Coronado glider that I’ve been driving since new as a company driver and have just recently bought the truck from the company. Now that jobs like this come out of my pocket where do you get your wiring diagrams from? I was an auto tech for a few years and have done my own electrical diagnostics on my personal vehicles so I know the process of elimination but haven’t found a source for information like diagrams and other diagnostics on my Freightliner, besides the dealer, which I really don’t think they like giving any information other than handing you a bill for repair. The Coronado has exactly the same interior as a Columbia or century, so it’s still pretty old school yet. LMK thanks.

[@DIYSEMI]

Usually if i buy the part at freightliner they will give me a diagram, i ask for a couple different ones and they usually give it to me.. I have also found some just by googling it and do a little comparison. I havent really found a good source other than that

[@Edg90]

I have a 2013 Peterbilt 587. The bunk ac stopped working. Check the fuses and their not blown. The fuse doesn't have any power. Have anyone come across this problem?

[@elpasobetta]

My blower works over 15mph, below it, it turns off.. any ideas ??