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2002 Pathfinder blower motor resistor broke

24 messages,  Last post on Jan 20, 2009 at 2:58 PM

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What is this discussion about? Nissan Pathfinder, Heating / Cooling, SUV

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#17 of 24 by rredolphy Dec 19, 2008 (3:36 am)
In my opinion that price is way out of line for the fix that is really needed. first off, based on my research of the problem, a "blower kit", which sounds like a complete rebuild, may fix the problem but it is clearly overkill. everything that i have seen on many forums points to the fan control amplifier and that was the problem with mine. more specifically, it is the FET semiconductor on the circuit board of the fan control amp that goes bad. I have found the fan control amp for as low as $127 and as high as $190 which is a sham since the FET component goes for about $10 if you handy enough to replace it.. Be that as it may, you can purchase an amp and install it your self with little problem since it is a pluggable unit.   also i have read that the 2 cabin air filters are a probable cause for the amp going bad. since they become very dirty and clogged, the amp overheats and causes it to fail. Bottom line is that you should clean or probably replace these filters while you have the glove box out or you will be having the same problem down the road again.   look at this thread and you will see many conversations that steer you in the same direction. also, at about the middle of the thread , you will find a post that has the pictures of every step needed to replace this amp and filters as well as sources for the amp purchase other than a nissan dealer.   http://forums.nicoclub.com/zerothread/289709   good luck.....rich Replies to this message: skinnytony (Dec 19, 2008 11:21 am)
#18 of 24 by tbostwick Dec 19, 2008 (11:16 am)
I agree with #17 Its not difficult to get to. Prob is the semiconductor in the fan control amp. If you do fix it let me know the nec # on the semi conductor. Thanks
#19 of 24 Re: [rredolphy] (blower motor kit) by skinnytony Dec 19, 2008 (11:21 am)
Replying to: rredolphy (Dec 19, 2008 3:36 am) Okay, I emailed my dealer about this and they have already called back with an explanation. They claim they can do, and have done, the less expensive amp fix but claim I can expect the same thing to happen again. Apparently there is a problem with the existing blower or amp/blower combo that replacing the amp won't completely fix. In other words the amp fix is just a Band-Aid and they said after the amp fix I can expect to be back in again to get the same problem fixed. So now I'm not sure what to do. Does their explanation sound reasonable?
#20 of 24 by tbostwick Dec 19, 2008 (1:31 pm)
It because the air filters get clogged after a while and the amp does not get proper cooling. By the way the owners manuel does not mention anything about the filters. Also replace the filters do not clean them.
#21 of 24 Nissan TSB on auto HVAC fan by skinnytony Dec 20, 2008 (7:00 pm)
Regarding the blower motor kit issue discussed immediately above here is a link to the official Nissan TSB which says the blower fan and amp kit must both be installed. (see NTB03-057b, the 6th one down)   http://x.nissanhelp.com/forums/Knowledgebase.html?catid=241&sort=d&pp=10&page=4 Replies to this message: skinnytony (Dec 20, 2008 7:03 pm)
#22 of 24 Re: Nissan TSB on auto HVAC fan [skinnytony] by skinnytony Dec 20, 2008 (7:03 pm)
Replying to: skinnytony (Dec 20, 2008 7:00 pm) Here's a more direct link.   http://www.nissanhelp.com/Ownership/Bulletins/2003/NTB03-057.htm
#23 of 24 by tbostwick Dec 21, 2008 (9:53 am)
Skinnytony. If you want to spend the money ok. But by my replacing the semiconductor and the filters all total cost $40 , 48000 miles later all is working well. Replies to this message: Marco_Pollo (Jan 20, 2009 2:58 pm)
#24 of 24 Re: [tbostwick] by Marco_Pollo Jan 20, 2009 (2:58 pm)
Replying to: tbostwick (Dec 21, 2008 9:53 am) I have a 2002 Pathfinder with Climate Control. Seems that my fan Control Amp is blown. Opened it up and found the part number for the Power FET on mine says "NEC K2500". Part of the number was discolored but still readable. I've had no luck in finding a replacement transistor. I've rigged up a temporary grounding toggle switch to the blower motor and can force it to full. I hope the above part number will give someone a shot at finding and sharing a source for a decent replacement if not exact.   I've checked the local salvage yards for a replacement amp, but haven't had luck there either. Does anyone known of any other makes/models that use that same part(the whole amp with heat sink)?

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