False alarm in the early morning

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.

 

wrote in

Aftermarket alarm?

1) Poor installation
2) Corrosion on contacts
3) Moisture
4) Motion sensitivity set too high
5) Crook shoved car or thumped window then ran away to hide and watch to
see if anyone actually responded to the alarm.

 

Grumpy arrives to check out the racket fingering his Glock 19 just
itchin' to expend a couple rounds...

JT

(It's OK to ask questions after all movement ceases..)

 

In my case, a weak battery was the cause of alarm problems.

 

-----------------------------

Check all door switches to be sure they don't open just by putting
pressure on the door from the inside. Interior light is the test.

'Curly'

 

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).

 

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.

 

Sounds like that could well be it... you'll find a poor but relatively
accurate picture of its location here:
http://www.moltenimage.com/freebies/g3accord/body_electrical/25-6.JPG

(That's from the '86-'89 manual, but the switch type location should be
pretty much the same on almost every Honda ever made