Re: sun roof is confused

Mar 17, 2007 1 Replies
C

Well, over the winter, the problem came back. I tried the "learning" trick, and it didn't help. I tried pulling the fuses (#11 and #24), and it didn't help. Any ideas?


My '01 PF had this problem. Dealer replaced the motor assembly on
> warantee. It worked for a month and started doing it again. That was
> a couple of years ago, and it's been doing it ever since. I just went out to
> try the "learning" trick belowm and it worked. BEFORE I did the learning trick.
> Wierd.
>
> However, it's clear that this is a common problem. I got an e-mail a couple
> of days ago from someone who read my original post on the problem. > >
>> >>
>>> 2001 nissan path fndr - sun roof works if you push button over and over to
>>> close or open, it will go about twoinches then I push button again and it
>>> goes another two inches, it used to be push button once and sun roof would
>>> open all the way and close all the way with out all this hurkey jerky stuff.
>>> any suggestions of what could be wrong?
>>
>> It has lost its memory of where the glass is. Mine did this when I replaced
>> the battery. If you work it all the way open and then all the way closed (2
>> inches at a time...), it should re-learn and start working correctly again. >> >
>
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E

According to the FSM, what is happening is that the cpu in the sunroof motor has detected an "interruption" during an automatic close operation and the 5 inch move is the fail-safe action. It detects this by monitoring the limit switch and an encoder built into the motor.

Here is the diagnostic procedure in the fsm for "Power sunroof cannot be opened or closed fully." (this seems to be the closest diagnostic to this problem):

  1. Initialize full closed position.
  2. Check the following. a. Check obstacles in sunroof, etc. b. Check worn or deformed sunroof. c. Check sunroof sash tilted too far inward or outward.
  3. Check sunroof switch.
  4. Check harness between sunroof motor and sunroof switch.
  5. Replace sunroof motor.

The "official" learning trick from the FSM is slightly different from the process that worked for me a couple times before (see below), though from my experience with my '02 it doesn't always work either. The book says "Set lid assembly to fully closed position by operating OPEN switch and TILT switch. After the lid has closed all the way, keep pushing the tilting switch toward tilt DOWN for more than 1 second."

My sunroof forgot how to close last summer after a 75 mile run > Well, over the winter, the problem came back. I tried the "learning" trick, > and

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