Find the cp for the alarm. Google it download the user manual. Investigate the issue. It might be that a wire is broken and the alarm is not getting A signal. To say what ever it wants to read is there or not. Btw when u open 1 door at a time does the interior roof light go on. If not for 1 door that could be ur issue as the alarm wants to see the door closed. Hood. And trunk. Then some have vibrations detector etc etc. Chk wiring.
SOURCE: Camry central door locking not working after alarm going off.
there is a sensor on the door lock in the door if it goes bad or falls off it will do that take the door panel off window up and look at the back side of the lock a small snap ring holds it on some even come unplugged
SOURCE: car alarm
Not really a solution, sorry. But, my 93 celica had the same problems as your having now. Mine just worked when it wanted to. I had to end up having someone check it out. They basically said "Who the hell hooked up your alarm?" I have no clue, I figured it came like that, but I guess someone took it out and redid it. That may be your problem. Unhook your alarm or take it in and just ask someone.
Do you have a sound system? Most...as my previous owned did, like to somehow hook the sound system with the alarm. But of course when he sold me the car he took the system..leaving the alarm to go haywire.
SOURCE: FACTORY ALARM CAMRY TOYOTA 2002 WENT OFF WHEN i WAS DRIVING
If your remote is attached to the key in the ignition, it could have been bumped setting off the alarm. It is also possible for the lock button to be depressed and lock the doors, if you do not notice this and get out of the car........!
disable or remove the alarm and see if problem gone especially ifits an aftermarket fitment alarm system.sounds like this job is one for an auto elec.
have had central door lock modules cause this
CAR ALARM ISSUES
It
can be any of the car doors not got properly locked or the door is locked but
the switch is not sensing the door locked. Open and close each door again
properly.
Or
else its problem with any of switch wiring getting in contact
with alarm wiring causing it to happen.
And
last thing alarm connections need to be inspected. It's getting short somewhere
in between.
There
are few help links with solutions, to troubleshoot these types of problems.
I suggest going through these links.
Click
the link below: ------
------------------
http://technoanswers.blogspot.in/2012/07/alarm-keeps-going-off.html
--------------
http://whatisbyme.blogspot.in/2012/04/2009-toyota-camry-hood-switch-causing.html
----------------
http://technoanswers.blogspot.com/2012/01/ford-pickup-alarm-will-not-disengage.html
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http://www.howtorepairguide.com/2012/11/mitsubishi-diamante-factory-security.html
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http://repairhelpcenter.blogspot.com/2012/01/toyota-avalon-factory-alarm-will-go-off.html
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http://schematicsdiagram.blogspot.com/2011/12/chevrolet-tahoe-hood-open-warning-on.html
-----------
These
details will help.
Thanks.
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