Power Accessories Stopped Working!!

[atgreene]

All of the power accessories have quit working!
Locks, windows, and sunroof just quit working out of the blue. Is there a power accessory fuse that could have blown?
Any help would be great, Thank you

2002 QX4 151k

[asnorton44]

Check negative battery cable

[atgreene]

Both battery cables are snug and free of corrosion. Any other ideas? Power window fuse was fine.
Why would all of these things stop working at once. BCM?

[Towncivilian]

Fuses #11 and #24 (locations on foldout page 3) and fusible link f (foldout page 4) could be possible culprits.

[atgreene]

Sorry it has been a while since I've replied on here. Just now got around to looking at the issue again. Fuses 11, 24 and Link F all appear to be not blown. When trying the power seats again, i noticed that i heard a sound like the motor was trying to work, like it was getting power. This sound occurred on every direction i tried to move the seat. so it seems to me like at least the seats are getting power, but not moving. Windows are still not working, i have tried even the rear window switches too. This is very frustrating and anyone with any ideas would be greatly appreciated. Thanks guys.

[Towncivilian]

There may be a coin or other obstruction in the seat rails preventing the seat from moving. If not, try rapping on the motor with the handle end of a screwdriver or hammer a few times to see if that "wakes it up".

As for the windows, try swapping the power window relay with another one of the same color. The power window relay is unfortunately difficult to access; see EL-566 for its location. You may need to remove the lower dash panel on the driver's side to help access it.

[atgreene]

The passenger seat does the same thing. I went to oreillys to talk with my buddy up there, i used to work there with him. We looked through the wiring diagram from the different components (seat, locks, windows) and they all went through the capacitor M145, i took that out and am headed up there for him to "test" it. I also took out the power window relay, i will have that tested as well

[atgreene]

Okay, went to O'Reillys and my friend tested the M145 Capacitor and PWR and they were both fine, went home to install them back in and once I got them in, everything started working again. Well mostly everything.

The driver window operates fine, but none of the other windows work, from both the master switch and each respective door's switch.
So I would think that the master window switch is bad and is preventing the other windows from working?

Also the driver's power seat works now except for the front and back motion. Recline and Incline work, along with tilting the bottom part work.
Passenger seat functions in all directions. Also, on the drivers seat, when I don't click any seat buttons, about every 5-10 seconds you can hear something faintly clicking under the drivers seat. Like the bottom is being pressed and released. I would think that the driver's power seat switch is bad as well?

Locks and sun roof work normally.

[atgreene]

Update: so after leaving the capacitor installed for about an hour, I came back out, windows and seats worked fine. Drove to the store, and once I got home the windows stopped working. Was stumped. Took the capacitor back out to reinstall it again, make sure it was plugged in correctly. I plugged it back in and the window worked for a second. So I unplugged the capacitor, stuck it in the freezer for 5 minutes and got enough out of it to roll up the window. So I found the culprit! Gonna get a new M145 Capacitor next week. Thank you a bunch for leading me to the capacitor TownCivilian! Cheers

[willy0505]

Alrighty Mr Greene - let me know the fix for this - I have replaced the ECM in my pathfinder but I am sure that something went bad electrical because my door locks don't work, windows don't roll down, etc so I may try your fix....

[atgreene]

Willt0505 - It was the M145 Capacitor. Its above the main fuse block under the steering column. To the left of the power window relay is a grey cubic relay looking thing (see above EL-566 for its location - thanks to towncivillian). . About $22 online and I'm going to the nissan dealer today to get their price. To see if that is your problem too, take M145 out and cool it off for ten minutes, then re plug it in and see if your accessories work for a few seconds.

[atgreene]

Incase anyone is keeping up with this thread, it turned out that the capacitor was fine. Turned out that the driver seat motor had a short in it and was causing it to try and run all the time, which was effectively draining the system and causing the capacitor to close and shut off power to keep the car from draining the battery. So I took the seat out and unplugged the motor and the car has been good so far. Knock on wood.