ecliptic240

This is a how to on repairing the window motor contacts if you find that the problem with your window isn't the amplifier like it most commonly is. The "step-by-step" is after a short back story if you wish to skip down to it.

So I, like many others, have a 95 S14 whose driver window quit working properly. After going through the FSM and troubleshooting the amp and the switch with a multimeter, I went and tested the motor itself using the 12V/18V cordless drill battery trick. Nothing. Motor was dead. Just to confirm, I pulled the motor out and disassembled it to find that the brush contacts were pretty much burnt to nothing from the continuous current flowing to them from the broken switch.

So after searching online for a replacement, and not really liking the outrageous pricing, I began wondering if other mid 90s Nissans used the same motor or at least the same general design. I hit the junkyard and came across a 94 Maxima. Pulled out the motor and disassembled it to find the guts were the same, and the contact points looked factory fresh. Sweet! I clipped the two wires leaving plenty to solder onto and took the inside rotating assembly as well just for good measure. I unfortunately forgot to take a picture of this piece but it's the long spindle assembly inside the housing that's outlined in orange


SOO to the how to:
Remove the 2 screws outlined in blue, and pull the cover in orange off. The rotating assembly inside will likely come off with it. If the contacts look like mine in the first picture above, that's likely the problem as it was with mine.
Snip the wires where I highlighted in red. I was dumb and cut them at the pink spot, too close to the housing to solder easily. Pull the wires from the Maxima piece throught the grommet on the S14 motor, and solder them to the S14 cut wires. (I highly recommend soldering and using heat shrink tubing, but if you choose you can just twist and tape, which to me is sketchy but hey it's your car.) Set it back in place with the grommet and put the rotating assembly and cover back in place and replace the screws. I plugged it into the door harness and tested it before reattaching it to the window regulator and back into the door just to be sure. It worked!!

So hopefully this simple write-up helps someone else get their window to roll down and up once again.

ZenkiDeven19

This is brilliant!

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Rak123

This is an excellent write up! Would have saved me some cash last summer knowing this. Thanks for the info


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PhilipFNF

So is the fix to a burnt out motor from the power window switch broken in the down position? I now have 2 bad power motors and YES, my power amp is workout fine!

codyace

It could be yes

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Chris_518

Think the guts of the maxima one or an S14 motor can swap into an S13 one. My motor will roll the window down a little bit and then the window falls down on its own.