A/C will not stop and all windows will not roll down

EBBWOKE

MEMBER
2014 NISSAN ALTIMA
100,000 MILES

Hi, I’ve been experiencing some issues lately. All of a sudden two things have happened at once.

The AC is in full blast, and I cannot turn it off at all or adjust the speed.
All of my windows will not roll down. The power buttons on the driver's side do not control it at all.
And a full block of fuses was out under the hood.

From my understanding that’s abnormal, maybe 1 or 2 need replacement but an entire row that’s strange. I’m suspecting that may have something to do with my issue but I’m not quite sure and if so where to start.

Please help!

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

This may be a few things. The intelligent power distribution box under the hood may have failed and sending power at all times.

Do you hear the window motors trying to operate in the up position only? In other words, they can't move any further but are still trying? Also, if you lost control of the blower motor, then the problem could be a short to ground, a faulty controller, or the body control module may have failed.

The idea that a group of fuses failed is my concern. I need to know which ones they are. Also, are you able to turn the blower motor off if you remove one fuse at a time from the IPDM (fuse box under the hood)?

Let me know. Also, let me know if you smell anything hot, electrical, and if you are able to identify a fuse that turns off the blower motor. Additionally, I have a feeling that the fusible link "I" has failed causing the fuses to lose power.

I attached a pic of the under-hood fuse box and highlighted the fusible link to check.

Let me know what you find, which fuses lost power, and if there is a fuse that turns off the blower motor.

Take care,

Joe

See pic below.

Image (Click to make bigger)