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Discussion Starter · #1 · (Edited)
I have an '05 Xterra with a '10 VK from an Armada. Because of the swap the A/C fan was deleted. I have since moved to TX from WA. In this climate that fan is needed. Since the original does not fit (anywhere, I've tried) I got a 10" push fan to put in front of the condenser and radiator. I wired it with help from a tech from a local dealership. Well! I ran the Auto Active Test. When it got to the fan it started, and immediately stopped. I plugged in the old fan, and it also will not work. Ran the engine with A/C on high, no fan. I checked the fuses, one in cab (#8 I believe), and two under the hood (#14, #17 maybe, can't remember now). I have not tested the relay yet. Waiting for the weekend. Any ideas what I broke? Advise on how to correctly wire this fan?
Pic 1, pigtail on harness. It's not a nasty pic. They don't like my sausage fingers holding the wire! Hahaha!!!
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Tire Automotive tire Finger Tread Gas

Pic 2, pigtail on original fan.
Hand Finger Electrical wiring Thumb Cable

Pic 3, wires going into old fan (probably unnecessary)
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Pic 4, New fan.
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Open each pdf and "print to pdf" then save them on your computer.

More chapters are available here:
Free factory service manuals HERE

https://www.nicoclub.com/service-manual?fsm=Xterra/2005/ec.pdf

Factory Service Manuals

This one includes codes/abbreviations/etc used in Nissan service manuals
Factory Service Manuals

Also, just running the a/c will not activate the electric fan. The fan is not active until the coolant temp hits 208掳, or the a/c pressure hits 229 psi. It should come on for the auto active test though.
 

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Discussion Starter · #3 ·
Thank you Ram Test! I blew the 40 Amp fuse (position letter I) in the engine compartment. I also now now I crossed the pos and negotiate leads. My last question is if I don't cross the leads, can I connect both leads from the pigtail to the single lead of the after market fan?
 

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can I connect both leads from the pigtail to the single lead of the after market fan?
Um, the two leads from the harness should not be crossed. The original 2-speed fan uses these power sources in series to get the 2 speeds. Your replacement single speed needs only one. The low speed brown feed will power the fan at 208掳 and a/c pressure of 229 psi, the pink feed should not be used.

Remember, the primary cooling is provided by the belt-driven engine fan, and the electric is just a supplement for when the engine fan can't keep up. As the engine gets hot, the engine fan should get increasingly louder. It should also be quite loud on a cold startup, and quickly quiet down in a few seconds. If you have any doubts if it's working properly, I would suggest you replace the fan clutch as they don't last forever. The bolt pattern is different between the Armada and the X, so be careful which one you get, if needed.

Be certain the cooling fins on the radiator and a/c condenser are completely clean of dirt, sand, bugs, grass, etc. Blast them out with a garden hose or self-serve car wash while you have the electric fan out. Also be sure your fan shroud is fully intact.
 

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Discussion Starter · #5 ·
I of course know it shouldn't be crossed. I did that originally with the "help" of a Nissan tech from a local dealership <sigh>.

I've got it all done, but with one possible error. I wired up the PINK positive, argh! From what I could see that was the one that engaged when the engine was too warm. I can switch it, but I don't want to (a lot of work to pull back apart). Can you tell me why the pink is the wrong one please?

I replaced the primary fan clutch last summer. It was dead.
 

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I know the low speed brown feed is powered on when the a/c pressure reaches 229.
I cannot confirm if the high speed pink feed also is triggered by a/c pressure. My guess is that it is not.
You will find out on the next hot day when you run the a/c.
But it should be fine for now.
 
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