Honda Odyssey : One Cooling Fan Works On High / Both Work On Low?

48 thoughts on “Honda Odyssey : One Cooling Fan Works On High / Both Work On Low?”

1. Hi, when the fans are on low speed and I back-probe the positive wire on the motor side, should I expect a voltage reading of about 6v? Is that how it work? Thank you.

2. Great lesson on wire diagrams and tracing the current flow. Very helpful!!

3. What a strange way to restrict the water flow. A master tech that only does diagnostic work, these type of systems always cause me a little fog visualizing the flow of water thru the garden hoses

4. Im listening while working and I realized I'm picturing michael keaton's voice from beetlejuice. Lol awesome work by the way.

5. I came across this video and it saved me so much diagnostic time in a hundred degree El Paso heat! The big mystery of the video was where the blown fuse came from. In my case once I confirmed what the issue was, I back-traced it to when I replaced the condenser fan several months ago. the fan blade separated from the motor and got lodged, I image it caused a surge which popped the fuse. Thanks for your hard work!

6. Hi, good video, in my case, same symptoms, but neither fan goes to high speed when I assume they should, when is hot and traffic is heavy, AC doesn't cool and if I stop I can feel too much heat out of the engine compartment, both fans are running but too slow in my opinion, any suggestions???

7. Do you have a video on a 05' CR-V? Or is the system the same as this Odyssey? I have NO fans working.

8. Hey great video- thank you! Just had a 2012 where all the fuses relays tested good. Added some 134a and finally got fans to high speed at idle.
   Prob added 8oz and seemed like high speed fan at idle was energized?
   Will pull all out and weigh back in but just wanted to add ramblings from an old man working on daughter in laws 2012 odyssey.

9. Hi, I might have to point out an error in your diagram assumption, you stated at the begining that the only reason both fans are on half speed (low) is because they are running on the same line. Meaning if one of them was turned off or disconnected (blown fuse) then the single fan would spin high. I belive you made an incorrect assumption that the switch was turned on high because you assumed that it was the reason why the fan was spinning on high instead of assuming that it is probably still in the low speed setting except that only one of the fans was driving all the voltage and therefore it was spinning fast. my understanding is that in order for both fans to kick into high speed is A/C pressure going over something like 200+psi (don't know the exact number). There is an additional relay under the main relay box that is usually the problem, but I would have first tested the three 4-pin relays + the 5-pin relay. I bet one is not working correctly and blew a fuse when it shorted out. the 5-pin relay is also know to be wired backwards at the factory in certain honda models so you will never see a high fan speed unless you replace the relay. I know there is more to it but that's a start at least. This is my experience but you do have a different model. But it's a nice video anyways. Thanks.

10. Hey i am having a similar issue,ac not working too well at the red light but when on freeway it blows cold? All this honda 3 relay stuff got me in knots? Would a jimmyrigged pusher fan in front of ac condenser help?any thoughts🥵

11. I have a 2013 odyssey when i first crunk it both fans were working on high and low once it ran for a while that same fan stopped working on high and low what should i look at?

12. Good morning, I do have the same problem with my 2019 Honda Pilot, Can you please give me an idea which fuse is for my car because it is different with Honda Odyssey? Thank you

13. I need the follow up…. The one where the fuse keeps blowing

14. Did the AC cool properly after the fuse was replaced?

15. Ok, so I'l have been having overheating issues with my emgine since i got it, used about a month ago. Done radiator flushing, and engine service. Still ssme thing but slightly better.

    However i noticed the radiator fan is directly connected, no thermostat active, and the friggin thing blows air from the engine bay into the radiator.

    As a trained engineer, my instincts have been telling me it should be th other way around_ it should suck air from the radiator!

    This video just confirmed my thoughts!

16. I have a 2014 Honda Odyssey. Both fans are not working!!! Haven’t checked fuse yet😳 just pray 🙏 for me! Thanks for your video 😇

17. Smart guy i see you are Friend. Great Stuff you got going there.keep it up.

18. Very informative on reading wire diagrams. But why not unplug the fan look for power and ground if not present THEN you get diagrams. But very informative

19. Hello buddy, so what was the problem with this van.. I have the same problem, would love a little help.. thank you

20. I am dealing with a 2013 oddity myself. Major weird ac issue. Same complaint.

21. Did the car return ?

22. Mr Eric O, I'm not sure you'll see this as it's an older video. But maybe you can shed a quick clarification for me on this. I just picked up an 07 Ody. Neither of the cooling fans kick on. From what I've seen on the diagrams I got from alldata, if the condenser fan doesn't work, the rad fan won't work correct?

    It was super well dealer maintained until the guy that I got it from got it. And this guy has his own shop. But he's one of the dirt bag mechanics. He wired up an external relay and put a switch in the dash. He claimed both fans turned on with the switch, but the wiring I took out yesterday proves different. It was a hack job and I got it back to factory with the wiring. He shoved the wire for the switch into a fuse and of course the fuse was blown. I hate hackjob mechanics. Just do the job right.

    That's why I LOVE you and your channel. You do things right and your explanation is spot on. My only thing is with this being the gen newer than mine, it's not exactly the same. So I just wanted to clarify it. It has 3 relays, and 4 fuses total(2 fuses in under hood box, 2 in driver's footwell). All are good.

23. What if the whole housing was shaking? Any recommendations?

24. Great explanation of using 3 relays to switch from series to parallel cooling fan function. And…Stroopwaffels!

25. Excellent

26. The Only Fan under the hood….they wish

27. I was having this EXACT problem and was hoping somebody would know. Could a missing fan relay cause this? I looked at fuses and was missing the relay on the left (I believe it was the radiator or High speed relay). Went to auto parts and noticed both fans were spinning (maybe because it went into low mode because I was driving and getting plenty of air over the condenser). I'm really hoping that was the only problem. No clue who or how long that relay hasn't been in there….

28. …sigh… if only ALL auto mechanics cared this much. I’m so SICK of getting ripped off by lazy auto repairmen who charge me EACH time they “try to” fix it. I’ve escaped a few charges by throwing a hissy-fit at the counter. BUT usually I just pay.
    Believing I’d finally get white-glove service, I bought a new $60k+ luxury car. I got white-glove service alright…I put my money right into their white-gloved hands!

29. Thanks man, I have a job that have this problem

30. This is so helpful. I'm working on a 2014 Odyssey EX-L with the same setup. Appreciate the wiring diagram help. I've figured out that there is no power coming to the a/c fan relay (the other two for the radiator fan and compressor are fine). Of course, that fan doesn't spin. I'm not sure how to troubleshoot no power in the fuse box for that relay (already replaced the two 30amp and 7.5amp clutch fuses just in case). Help a sister out:)

31. Actually Eric, the stroopwafels are Dutch rather than English. I know this because my family are from Holland

32. Excellent instruction on the fan wiring and how it works! You missed your calling as a teacher.

33. My driver side won’t run on a high. help!

34. Where did you get the wires are use them to remove the fuses?

35. Most excellent video and from now on I’ll make sure both fans operate in high and low speed mode after servicing A/C Thanks

36. Another great video.

37. This video helped me understand the overheating problem with my daughters 2007 Odyssey, same issue as this van. No one could figure it out! One fan only on high speed. Broken ground wire! That's 2 vehicle you've helped me with, Thanks again!

38. Hi Eric I also have been a Fan Im Having Trouble with flowing the Low speed Drawing with you As Im following As you come to the first Relay you Draw Through the First Relay in it"s Natural State On it"s way to Ground But both Relay"s Control are On the same Power Source Which will Pull Both Wiper AT the Same time And The Power Flow Would be In another Direction Please HELP ME TO UNDERSTAND THIS

39. You make it look easy, good job!

40. Awesome video, was having the exact same issue as you were here so this helped me a lot!! Thanks!!

41. Thank you. You have a simple breakdown of the fan system that makes it easier to understand. I am trying to troubleshoot a 2004 Buick Rendezvous cooling fan issue but don’t have the diagnostic tools to help me turn the fans on off. Wish we had an Eric O in our neighborhood.

42. So was the issue a blown 30amp fuse? The purple one?

43. Hello,my 2010 Honda Odyssey,has cooling fans running,even when the car is shut off. Could it be a short relay or a shorted coolant temp sensor ? Thanks

44. I'm a short time subscriber and missed this one. You sir are OUTSTANDIG1

45. Erick I have a 2019 accord and just yesterday I got an overheating warning. Fans usually come on at 200 degrees F. But not today for the first time. Both Fans only come on when I turn on ac which is what I had to do to get home safely

46. Thanks brother! Very good info, still trying to figure out an simalar issue on my 04 honda odyssey. Ac blows ice cold, cooling fan works, but the fan on passenger side in engine bay not turning on! Fan has been replaced recently. Fuses are good…

47. Where did you get the pliers you’re using to remove the fuses?

48. Hi 👋 you use a schematic to explain you theory but we can't tell what your looking at. Maybe a larger copy of the schematic your viewing and drawing on would help us better. Keep up the good work I know filming is double the work load.

Comments are closed.