looking for advice on Honda CRV air cinditioning fan not working

[twofake]

Hi everyone,
Could someone out ther ehelp me to locate where the problem exists that makes my inside cabin fan not work at all.Yes this means that there is also no air conditioning function.When the lower right (fan) knob is turned, nothing happens at all.There are no blown fuses.Someone suggested to check "the ballast resistor or coils or transistor" but they did not specify where these are found. Any advice would be appreciated.Thanks.

 

[motsco_]

Hi everyone,
Could someone out ther ehelp me to locate where the problem exists that makes my inside cabin fan not work at all.Yes this means that there is also no air conditioning function.When the lower right (fan) knob is turned, nothing happens at all.There are no blown fuses.Someone suggested to check "the ballast resistor or coils or transistor" but they did not specify where these are found. Any advice would be appreciated.Thanks.

You haven't provided any details (but it's Psychic Wednesday) so start by looking here:
http://www.hondasuv.com/members/showthread.php?t=9563&highlight=transistor

Sign in and SEARCH, since it's been covered many times already. If it's not working even if you turn it all the way until you hear the 'click', it's probably not the transistor (but we don't know what model / year / market you're asking for help on).

'Curly'

 

[twofake]

You haven't provided any details (but it's Psychic Wednesday) so start by looking here:
http://www.hondasuv.com/members/showthread.php?t=9563&highlight=trans...

Sign in and SEARCH, since it's been covered many times already. If it's not working even if you turn it all the way until you hear the 'click', it's probably not the transistor (but we don't know what model / year / market you're asking for help on).

'Curly'

Sorry Curly,
You are right. I just realised that I did not provide any details. The model is CRV for the Australian market. The year is 2002.

 

[twofake]

You haven't provided any details (but it's Psychic Wednesday) so start by looking here:
http://www.hondasuv.com/members/showthread.php?t=9563&highlight=trans...

Sign in and SEARCH, since it's been covered many times already. If it's not working even if you turn it all the way until you hear the 'click', it's probably not the transistor (but we don't know what model / year / market you're asking for help on).

'Curly'

Hi again Curly,
I read the article in Honda SUV called "Heater/AC fan only works on high speed " with interest.The difference here is that the heater knob does nothing in any positions (not even fully to the right).I have never had any water leak problems either.If water is leaking into the area, will it always reach the carpet?I had a look at the San Leandro Honda parts site and coudn't work out where the transistor is in their diagram.Is it the part labelled "8" in diagram on the following page? http://www.slhondaparts.com/browse.asp?Model=CR%2DV&Year=2002&TrimLevel=5DR+LX+4WD&TransLevel=4ATKA&Section=E&Category=B++1710%7CHEATER+BLOWER&Doors=5&Emissions=KA&PartCatalogId=14S9A0&ViewParts=true

 

[motsco_]

Hi again Curly,
I read the article in Honda SUV called "Heater/AC fan only works on high speed " with interest.The difference here is that the heater knob does nothing in any positions (not even fully to the right).I have never had any water leak problems either.If water is leaking into the area, will it always reach the carpet?I had a look at the San Leandro Honda parts site and coudn't work out where the transistor is in their diagram.Is it the part labelled "8" in diagram on the following page? http://www.slhondaparts.com/browse.asp?Model=CR%2DV&Year=2002&TrimLevel=5DR+LX+4WD&TransLevel=4ATKA&Section=E&Category=B++1710%7CHEATER+BLOWER&Doors=5&Emissions=KA&PartCatalogId=14S9A0&ViewParts=true

Put your cursor on part number 8 and you can go to the parts list, or right-click and 'Open in a new TAB'.

There may not be a high speed (overide) switch on your CR-V, since it's a Gen II. Just drop your glove box (as if you were changing your Cabin Filter) and you can unplug and jumper the transistor. Fan should run full speed. If you have terribly high mileage (it's good to mention that too), it might be the fan motor instead. Sign in and SEARCH at www.hondasuv.com if you want to access all the threads about heater troubleshooting. Change your Cabin Filter if you haven't done so lately.

'Curly'

 

[twofake]

Put your cursor on part number 8 and you can go to the parts list, or right-click and 'Open in a new TAB'.

There may not be a high speed (overide) switch on your CR-V, since it's a Gen II. Just drop your glove box (as if you were changing your Cabin Filter) and you can unplug and jumper the transistor. Fan should run full speed. If you have terribly high mileage (it's good to mention that too), it might be the fan motor instead. Sign in and SEARCH atwww.hondasuv.comif you want to access all the threads about heater troubleshooting. Change your Cabin Filter if you haven't done so lately.

'Curly'- Hide quoted text -

- Show quoted text -

Thanks Curly,
I have located the transistor. Can you tell me how I "jumper the transistor"?There are 4 wires that go to the transistor so when I unplg it, which wires do I jump across?Hey some interesting info for you, I took the cabin filter trays out and the filters are gone! I rang an auto guy who told me that for the Australian market, there are no filters at all.Yes they have empty trays?Tomorrow, I have arranged to vist a friend who has a working CRV so I can swap their transistor to see if that works so I'll keep you all posted.

 

[motsco_]

Thanks Curly,
I have located the transistor. Can you tell me how I "jumper the
transistor"?There are 4 wires that go to the transistor so when I
unplg it, which wires do I jump across?Hey some interesting info for
you, I took the cabin filter trays out and the filters are gone! I
rang an auto guy who told me that for the Australian market, there are
no filters at all.Yes they have empty trays?Tomorrow, I have arranged
to vist a friend who has a working CRV so I can swap their transistor
to see if that works so I'll keep you all posted.

 

[twofake]

You'll be an expert by the time you get it fixed. Good for you.

'Curly'- Hide quoted text -

- Show quoted text -

OK I have returned from my friend's place and did a swap of their transistor and YES it worked so that means that part is faulty. I will make enquiries about replacements :a)new , b) from auto wreckers and c)I'll look into actually replacing the transistor inside the unit. Out of interest, can you still tell me how to "jumper the transistor" for future tests please?

 

[motsco_]

OK I have returned from my friend's place and did a swap of their transistor and YES it worked so that means that part is faulty. I will make enquiries about replacements :a)new , b) from auto wreckers and c)I'll look into actually replacing the transistor inside the unit. Out of interest, can you still tell me how to "jumper the transistor" for future tests please?

Since I didn't realize there were four wires and I don't own the manuals for a Gen II, I wouldn't be much help, sorry.

Same topic: Did you find any evidence that there had ever been any entrance of water in that part of the heater? The gen 1 is notorious for wet carpet on the passengers side, which eventually wrecks the transistor also.

'Curly'

 

[twofake]

Since I didn't realize there were four wires and I don't own the manuals for a Gen II, I wouldn't be much help, sorry.

Same topic: Did you find any evidence that there had ever been any entrance of water in that part of the heater? The gen 1 is notorious for wet carpet on the passengers side, which eventually wrecks the transistor also.

'Curly'- Hide quoted text -

- Show quoted text -

I did not see any evidence of water entry BUT my wife says that when the air blower died, it had just been raining.ALSO, the friend who let me test their "transistor" says she has had intermittent problems after rain so maybe I had better look into sealing where ever I am supposed to .I did read that link you sent about sealing the Gen1 CRV but have not looked at ours yet.I looked into replacing the actual transistor inside the Honda device but as yet, have not found a source for this part in Australia. It is a Toshiba 2SK2313 N channel FET.

 

[twofake]

I did not see any evidence of water entry BUT my wife says that when the air blower died, it had just been raining.ALSO, the friend who let me test their "transistor" says she has had intermittent problems after rain so maybe I had better look into sealing where ever I am supposed to .I did read that link you sent about sealing the Gen1 CRV but have not looked at ours yet.I looked into replacing the actual transistor inside the Honda device but as yet, have not found a source for this part in Australia. It is a Toshiba 2SK2313 N channel FET.- Hide quoted text -

- Show quoted text -

I priced the whole replacement part today at the Honda dealer and it has gone down in price from AU$248 to AU$157 (I'm not sure if that is with the 10% tax added or before it is added) Australian dollars ...maybe due to popular demand.? The site in US http://www.slhondaparts.com/browse.asp?Model=CR%2DV&Year=2002&TrimLevel=5DR+LX+4WD&TransLevel=4ATKA&Section=E&Category=B++1710%7CHEATER+BLOWER&Doors=5&Emissions=KA&PartCatalogId=14S9A0&IRefNo=008&PartNoSelected=79330-S5A-942 Has these parts for US$44.42 or US$14 which seesm a whole lot cheaper but the US serial number does not seem to match mine.

 

[motsco_]

I priced the whole replacement part today at the Honda dealer and it has gone down in price from AU$248 to AU$157 (I'm not sure if that is with the 10% tax added or before it is added) Australian dollars ...maybe due to popular demand.? The site in US http://www.slhondaparts.com/browse.asp?Model=CR%2DV&Year=2002&TrimLevel=5DR+LX+4WD&TransLevel=4ATKA&Section=E&Category=B++1710%7CHEATER+BLOWER&Doors=5&Emissions=KA&PartCatalogId=14S9A0&IRefNo=008&PartNoSelected=79330-S5A-942 Has these parts for US$44.42 or US$14 which seesm a whole lot cheaper but the US serial number does not seem to match mine.

For the money you save you can afford to try a few 'substitutes' and have an adventure trying it. I'm with you. Dremmel tool, epoxy, whatever it takes. Meantime it's too bad you can't find a schematic so you could hotwire it on FULL so at least you'll have AC without having to drive 60 MPH. :-(

'Curly'

 

[twofake]

For the money you save you can afford to try a few 'substitutes' and have an adventure trying it. I'm with you. Dremmel tool, epoxy, whatever it takes. Meantime it's too bad you can't find a schematic so you could hotwire it on FULL so at least you'll have AC without having to drive 60 MPH. :-(

'Curly'

With some help I have now worked out that inside the "blower transistor unit", there is a heat detecting device which ca blow if the fan does not cool it enough.Once this is blown, the unit stops completely. I have tested the suspect part and have found them (pack of 5 for under AU$20 including postage).Once I have the part installed,I'll repost.The acual transistor is still functioning.

 

[motsco_]

With some help I have now worked out that inside the "blower transistor unit", there is a heat detecting device which ca blow if the fan does not cool it enough.Once this is blown, the unit stops completely. I have tested the suspect part and have found them (pack of 5 for under AU$20 including postage).Once I have the part installed,I'll repost.The acual transistor is still functioning.

So it's just like the thermal fuse they put in video projectors and some light fixtures? That should be easy for you to jumper it out while you wait for the proper part to arrive.

'Curly'

 

[twofake]

So it's just like the thermal fuse they put in video projectors and some light fixtures? That should be easy for you to jumper it out while you wait for the proper part to arrive.

'Curly'

I decided that placing a jumper was not a good idea in case there was an overheating problem.I did manage to locate a replacement thermal fuse (had to drive to the other side of town and back) of the same rating and size and have just resoldered the unit and reinstalled it.All worknig fine now.Just makes me wonder why the thing would have overheated in the first place??? Anyway, now all the readers know what to do.