Because of this thread and Andrew224's detail explaination....I've saved at least $700 from the Inifiniti dealer by fixing my fan blower not working problem. So I decided to take pictures of each step to help out this very comment problem of QX4/Pathy and hope those who are not really CAR friendly ppl can do this by themself.
OK...my case is exactly like Andrew224. 50,000 miles 2002 QX4's fan blower decided not to work 1 day. (wife's car). I have test the AC button and did hear it "clicks" on and off. I have try to turn on full blast on the fan but nothing happen. So that fits perfectly like what Andrew mentioned above, I have to replace the Fan Control AMP. I am sure if your fan is blowing full blast without slowing down or adjustment, the same problem occur.
Parts....ordered (by phone) @ Courtesy Parts....just like Andrew and other mentioned...probably the cheapest area for genuien Nissan parts. I've talked to JOE there and ordered part # 27761-70T03 (Module Assy-Pow) . Also, I might as well change the in-cabin filter, however, the parts number listed above does not match what Joe had found. He said, this is a direct fit to QX4 and Pathy and the filter parts # is 999m1-VP003.
Total amount, shipped to Chicago area, within 2 days....$158 something.
Courtesy Nissan -
http://www.courtesyparts.com/
You should CALL instead of order online, cause I can't find the filter online and I prefer to talk to real person to confirm my order instead of a computer.
OK...got the parts within 2 days...but I think anyone before ordering the parts, please follow my steps and see you are capable to do all these installation/removal by yourself. Not everyone is very car/machine friendly, so you might need to ask someone that know what he is doing or....saving money is not your option, you have to let the dealer to make your hard earning money. But honestly, I think this is a stage 3 (out of 10) DIY fix that even a 10 years old can do (like someone mentioned above...) So...follow these steps and see you can get to the stage that you can find the Fan Control AMP and remove it. If you can remove that AMP, then you can go order the parts and install it yourself.
Yes...your car can still run without the amp, just don't turn on your climate control and HOPE it is not 20 degree outside (you don't need AC, but you do need HEAT...)
Ok...here are the parts and how they look (and their parts number on box)
OK....step 1, open glove box, remove the stringer on side, simple step
Step 2...Flip down the 2 lower plastic pins, then yank them toward center. Pull harder and both pins should be out completely.
Step 3....remove 2 screws and get that plastic wood panel out of the way.
Step 4...remove all 7 screws.
Step 5...remove 2 more side screws
Step 6....if 1st time removing this panel, need to use some force to swing it out...don't be afraid, it is not that hard to pull it out.
Step 7....panel should be down.
Step 8....remove glove box light fixture, snap and pull, may be check the bulb as well, mine blew long time ago and it is the perfect time to replace that.
Step 9...you should see the whole picture, the FAN AMP and the In Cabine Filter...item # 1, 2 and 3.
Step 10...unplug fan amp wire plug
Step 11...remove 2 screws. The AMP should be about to slide out without any trouble. If you have the new AMP parts, replace it in reverse order.
Step 12....if you have the new AMP in...it is a good idea to start your car and try out the climate control system JUST to make sure the AMP does take care of your problem (mine does...awesome)
Step 13....remove filter clip at the bottom. Slide the lower panel 1st, then the upper panel.
Step 14....use the already came with clip (with the new filter), plug in new filers, clip in new clip....
Step 15....if you want, you can fill out the "Date tag" and the filter notes and stick them onto the panel like mine. It is totally optional, not required but it is there, might as well do it...
Ths is it...follow all the steps in reverse order and you are done. This site and Andrew224 (and others) just saved me $700 because the local dealer said they have to do all the testing, this and that....total was $900 plus TAX and I have to leave the car for 2 days there and they don't have any opening untill early MAY...
Good to save money...and better, good to share with others and help others to save more money...