alarm going off

Hi all,

Finish my first install of a remote start with alarm and two way remote today. All seemed well and everyhting works as it should until now for some reason, some 6-7 hours later, the alarm is going off for no reason. The LCD display is displaying a door open so it's not related to the shock sensor which has it's own display method.

I read a couple of things, that maybe the door pin switch is dirty or mabe the battery is weal or low. The second one sounded interesting since this car has been sitting and the battery keeps going low on me. i have been putting my motorcycle battery maintainer on it to boast it up when this happens but maybe that is not enough. My question is do you think a weak battery could cause the alarm to go off for no reason?

Thanks, jim

Just checked the battery and it reads 12.36V so i don't think it is that. Maybe the door pin switches? How do you verify them. Dong a search on the web of this problem has shown me that I am not alone and that the problem of an intermittent alarm for no apparent reason is very common.

ANy help would be greatly appreciated.

It could be that it is low because we have not been using the car and I keep draining the battery working on this.............but i think I isolated the problem today.

The problem is that when the car is armed, it sets off the alarm at random times from when it was armed. Anywhere from 1 minute to 15 minutes so far. I did notice that what is happening is that the dome light is coming on when the alarm triggers so it thinks the door is ajar. I have a two way remote so it tells me that the door is ajar even though it isn't. That led me to watch to see if the dome light was triggering it.

Now this car, 2002 Durango has 2 door trigger wires that go to a Central Timer Module (CTM) and out to the Dome. The RS instructions puts out (-) out for the dome light so that it comes on when you unlock the doors. It says the door pin switches must be isolated from the (-) light output or it will trigger the alarm. They show how to isolate the (-) door switch...which I did.

I cut the drivers side door trigger wire going into the CTM and wired the CTM side (dome light side) to relay #30. I then wired the othe rcut end to #87A. 87 is GND and 85 is the (-) dome light out from the RS. 86 is +12V. So when the dome light out sends a (-) signal it powers the relay and grounds the dome light which is isolated from the door pin switch. The light lights without the door being opened as it should.

The thing that I may have misunderstood is that they said if you have 2 door triggers that you must diode isolate the 2. I did this by connecting the cathode of a 4001 diode to the cut driver door pin switch trigger wire and another diode to the other door trigger wire (passenger and back doors). The 2 Anodes are tied together and go to the (-) door input of the RS.

Now the passenger/back doors door trigger wire is not islolated from the dome light circuit it feeds in the CTM.

My question is should of cut that trigger wire as well and hooked up another relay setup like the drivers side, connecting that relay pin #85 to the same (-) dome light output?

The instructions do not address this at all but it seems to be where the the problem is considering that it is a dome light coming on that is triggering the alarm. I am also curious as to why the dome light comes on at random times when alarmed causing this trigger. My guess it has something to do with the CTM since it is a timer module.

Any help will be greatly appreciated. This is my last issue. Everything else works great.

Thanks, Jim

It's a 2002 Durango, 4.7L and the RS is an Airwolf two way by DesignTech which I bought back in 2004 but never got to installing it.

I'm not sure what H2/6 is in your diagram nor am i sure if you cut 13 or 15. I think it is (-) door trigger input to the RS.

Where is the dome light output from the RS in your diagram?

The instructions say to cut pin 15 and wire the non-CTI cut side to a relay pin 87a. Then to wire the CTI cut side to that relay pin 30.

The relay is wired so that when you unlock the doors, internally the RS sends a (-) dome light out to the coil. This powers the relay and grounds the dome light without grounding the door trigger. That is why they cut it. Since the door trigger is gooing to 87a and 30 goes to the dome light...when the RS is not powered, it is like the wire was never cut. the thing is they did not say to cut CTI 13 and do the same.

Last i looked i could post images but I will try to create one and post it. Thanks

Is this the same as you posted under durango 2?. Not sure if dome supervision in your diagram is my RS out or a wire in the car.