goes off by its self
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=19373
Printed Date: April 27, 2024 at 3:42 AM
Topic: goes off by its self
Posted By: majek
Subject: goes off by its self
Date Posted: September 27, 2003 at 3:02 PM
I have a 97 honda accord and just installed a stellar ST9000 alarm, the alarm goes off by its self about every 4 hours and the trigger zone light flashes 5 times which means the door trigger zone but I cant find out the problem. Could someone please help me. Thanks
Replies:
Posted By: majek
Date Posted: September 27, 2003 at 7:03 PM
The alarm goes off about every 40 minutes now. Can somebody please help
Posted By: cool_greg
Date Posted: September 27, 2003 at 7:59 PM
try disconnecting the door trigger and see if the problem comes up, if it stops then you may have to isolate the input with a relay, if not then I guess you have a problem with the alarm
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Just a Guy, Wiring up those Vehicals
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Gool_Greg
Posted By: majek
Date Posted: September 27, 2003 at 8:08 PM
How do you isolate the input with a relay, and by doing this, what does isolating the wire do. Thanks
Posted By: majek
Date Posted: September 27, 2003 at 9:14 PM
Could someone show me how to wire up the relay to isolate the wire and can I put the relay even if I dont know if its the problem, but just to make sure. I dont want to short circut anything.
Posted By: c2deez
Date Posted: September 27, 2003 at 9:24 PM
I've never installed the type of alarm you have, but i'm guessing it may be in some sort of "current sensing mode". If so, turn the current sensing off. If that doesn't work use the neg instant trigger instead of the neg door trigger.
Posted By: majek
Date Posted: September 27, 2003 at 9:32 PM
What negative instant trigger are you talking about and there is no current sensing mode. Im trying to figure out why my alarm is saying that the door trigger is being violated, when its not even open.
Posted By: c2deez
Date Posted: September 27, 2003 at 9:46 PM
Most alarms have 1 neg door trigger, 1 pos door trigger, and at least 1 neg instant trigger(which may also be called a trunk trigger). If your alarm is not sensing current or some sort of voltage drop thru the door pin then you need to find what's occuring at the pin switch. If this is happening at regular intervals(every 40 min), then the best thing to do would be to probe the pin switch with a DMM and sit in the car with a clock and watch the meter to see what is happening when the alarm triggers. Also, make sure you don't have any other devices which are triggering thru the door pin(glass break sensors, motion sensors, etc.). Also, what vehicle wire are you using for the door trigger?
Posted By: majek
Date Posted: September 27, 2003 at 10:00 PM
BLACK/ white
Posted By: Velocity Motors
Date Posted: September 27, 2003 at 10:06 PM
The honda has a (-) type door trigger system that the alarm should be able to input without a problem. If the system falses every 4 hours, do what cool_greg said to do by disconnecting the door pin wire from the alarm and see if it still falses. If there is still a false alarm, then the alarm system CPU is faulty and should get looked at. If the system doesn't go off, then you may have a bad connection to the door pin somewhere in the car and it's grounding out somehow.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: c2deez
Date Posted: September 27, 2003 at 10:10 PM
You may also want to check the door pins to make sure they are up to par. It's a long shot, but I have come across systems with faulty, dirty, cracked, or loose, pinswitches which caused intermittent faults.
Posted By: majek
Date Posted: September 27, 2003 at 10:19 PM
I disconnected the door trigger wire from the alarm and im going to leave over night to see what happens and ill let you know tomorrow or tonight if the alarm goes off. Thanks alot you guys
Posted By: majek
Date Posted: September 27, 2003 at 10:27 PM
I found out the problem it was the dome light supervision wire which is taped into the door trigger wire, so the two of the wires are connected to the door trigger of the vehicle. So if I want the dome supervision to work how do I hook it up, so that the wire is not taped into the door trigger wire.
Posted By: kenmci
Date Posted: September 27, 2003 at 10:29 PM
Maybe this will help, but i'm not sure. If your alarm does not go off tonight then might have to double diode isloate the door tirggers. I've seen this happen many times on Ford's were about every 30-60min the alarm goes off and shows that a door is open. Never heard of this happening on a honda, but maybe it will work. Take the wire that runs to the alarm and place a diode with the stripe (cathode) side facing the door. Then take the door trigger wire, cut it and place a diode with the stripe (cathode) side so that the stripe faces the door pin, if you need a diagram email me @ kenmci@mail.com and i'll diagram it for you. Now usually this is done when each door trigger is separate, so if you have one wire for all doors, which it looks like you do, then use this idea only as a last resort.
Posted By: kenmci
Date Posted: September 27, 2003 at 10:32 PM
Ask me for a diagram, because the diodes need to go in a specific order, it's hard to explain in words.
Posted By: Velocity Motors
Date Posted: September 27, 2003 at 10:37 PM
Use this diagram ( the negative one ) for the dome light supervision. The wire is the same as the door trigger wire, but the dome light wire from the alarm should have a relay on it to isolate it from the door trigger circuit. ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: majek
Date Posted: September 27, 2003 at 11:29 PM
Velocity Motors my alarm has a built in relay for the dome supervision, there has to be an other way to wire up the dome supervision. I found that when the car goes off the dome supervision wire makes the door trigger wire get a pulse making the door trigger wire to the alarm make the car go off saying that the door trigger has been violated, which really happens is that the pulse from the dome light wire is sending a negative feed setting the alrm off.
Posted By: c2deez
Date Posted: September 27, 2003 at 11:43 PM
Sounds like the polarity input(ground) for the dome light relay may be loose. There is no other way for dome supervision to operate. The door pin has to "see" ground in order to trigger the domelight. The bigger concern is: Why is the domelight supervision wire pulsing ground 40 minutes AFTER the system has been armed? The d\s should only operate for approx 30 seconds after the alarm is disarmed. Could be you have a defective internal relay.
Posted By: Velocity Motors
Date Posted: September 27, 2003 at 11:45 PM
Even if the unit has built in relay for this circuit, you have to isolate the two circuits from each other with a relay. Use the negative relay diagram from thelink and hook up the dome light output from pin 30 to the dome light wire of the Honda. Also, why is the dome light wire feeding a (-) signal to your car 4 hours after arming ? If this is the case, you have a faulty dome light circuit or relay inside the unit.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: majek
Date Posted: September 28, 2003 at 12:11 AM
Is there a proper way to mount the alarm unit? Does the way I mount the unit matter. I have the alarm unit mounted up an down but a guy told me the best way to mount the alarm unit is to mount it flat. The guy said the way I have it mounted can cause a false alarm and set the alarm off. Please le me know. Thanks
Posted By: majek
Date Posted: September 28, 2003 at 2:19 PM
Last night the car didnt go off at all. This is what I found out this morning. Why is it when the door trigger wire from the alarm is disconnected but the dome supervision wire from the alarm is hooked up to the vehicle door trigger wire, then when I tap the car there are warning 4 chirps and the light in the car indicates that the car has been lightly taped. But when the door trigger wire from the alarm is connected with the dome supervision wire from the alarm to the vehicle door trigger wire, then when I tap the car the alarm goes off like somebody tryed to break into the car and the light in the car indicates that the door trigger has been violated. I found that when I taped the car the dome light flashes and I guess it spikes some kind of current going to the door trigger wire to the alarm which makes the car go off. Please help me with this problem Thanks
Posted By: Velocity Motors
Date Posted: September 28, 2003 at 3:19 PM
Is your impact sensor's final stage output hooked up to your door trigger input ? It sounds like this is what is happening.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: majek
Date Posted: September 28, 2003 at 3:40 PM
no
Posted By: majek
Date Posted: September 28, 2003 at 3:46 PM
Like I said that when the car gets hit the dome light flashes sending a pulse to the door trigger wire to the alarm setting the alarm off. Thats why I need instructions on how to wire a relay.
Posted By: Velocity Motors
Date Posted: September 28, 2003 at 4:10 PM
Have you checked the domelight circuit and see if the wire is grounding out anywhere ? Placing a relay will not help the situation if the dome light flickers when you hit the car .
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: majek
Date Posted: September 28, 2003 at 4:27 PM
It doesnt flicker it flashes when the alarm goes off, thats how its suppose to be, my question is how do you hook up the domelight with out it triggering the alarm to go off when the car gets hit.
Posted By: c2deez
Date Posted: September 28, 2003 at 11:25 PM
I've NEVER seen an alarm pulse the dome circuit when there is a violation. If you checked for the impact tied to the door trigger, like Velocity said, and that's not the case, then I think someone used the parking light flash to trigger the domelight circuit. I've seen many installs where the installer used a parking light output to activate a sort of dome supervision, and this sounds like exactly whats happening. The domelight is activating in unison with the parking light flash. . .then again maybe I just need to get some sleep.
Hope some, or any, of this helps!
Posted By: kenmci
Date Posted: September 29, 2003 at 1:01 AM
Maybe this will not do anything, but I would try turning the domelight off and see if you can tap the car and the alarm still goes off. Also as Velocity said, I would check the domelight circuit, make sure the bulb is good, try removing it and play with the alarm etc.
Posted By: kenmci
Date Posted: September 29, 2003 at 6:45 PM
majek, I sent you the diagram, I messed up the first one so make sure you use the second diagram I send you. The one were the stripes face each other.
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