Thanks Matt, One naive question, where is the door pin? My driver-door
was damaged two years ago and replaced by bodyshop. Maybe this is the
source of the problem.
The dealer was unable to locate the problem since the alarm didn't
sound at that time.

Matt Ion wrote:
> hchen5965@yahoo.com wrote:
> > Matt Ion wrote:
> >
> >>hchen5965@yahoo.com wrote:
> >>
> >>>Hi,
> >>> This morning I was woked up by a false alarm from my 2000 Honda
> >>>Accord EX. It was parked outside my appartment. Not sure what happened
> >>>exactly. I used my remote to unlock the door and shut off the alarm.
> >>>Now it looks normal. This is the first time it happened. Anybody has
> >>>similiar experience? What are general causes?
> >>> Thanks for attention.
> >>
> >>
> >>How do you know it was a false, and not someone trying to break in?
> >
> >
> > Well, it happens again at my company's parking lot. It is on and off
> > several times this morning and I had to leave the door unlocked. Going
> > to take to dealer tomorrow and see what is the problem. Just check it
> > going to cost 90 bucks.
>
> Factory system, I assume?
>
> First thing to check would probably be the hood and/or trunk pins, if so
> equipped, and make sure the hood and trunk are both closing properly.
> On our Dodge minivan, if you accidentally pop the hood (the hood release
> is where you'd expect the e-brake release to be...), it doesn't LOOK
> popped, but it's got enough play that a gust of wind can lift it enough
> to trigger the hood pin. Next I'd check the door pins, make sure
> they're mounted solidly, and that the doors are closing fully (driver's
> door sags on my old '87 Accord and it has to be closed REALLY GOOD, or
> it will LOOK closed, but be still be open enough for the pin switch to
> make contact).