rearming factory alarm
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=110944
Printed Date: May 15, 2024 at 7:56 PM
Topic: rearming factory alarm
Posted By: darrellt
Subject: rearming factory alarm
Date Posted: January 24, 2009 at 10:58 AM
I have a 2002 Avalanche with factory alarm and viper 169xv remote start system. The problem I have is that the factory alarm will only arm if a door (any door) is open while either pressing lock on the FOB or by pressing the lock button on the door. When the door is open the security telltale light is lite and blinking. When I press lock it turns solid and arms after I close the door and the courtesy light goes out. But with the door closed the telltale security light never comes on and the alarm will not arm. I have tried changing the lock pulses from the 160xv from 1 to 2 and vice versa with no luck. Is there a factory rearm wire that I could possibly connect to my remote start? Maybe then it will arm with the door closed. Its almost like a ground is missing until the door is opened. Thanks in advance.
Replies:
Posted By: loneranger
Date Posted: January 24, 2009 at 11:24 AM
When was the 160XV installed? Was the factory alarm working before the installation? Who installed the 160VX? ------------- Ideal - cmon dude, add to topics in a useful manner, not stuff that is obvious.
Story - Phzzzt! Hey, what happened?! ... Isn't it obvious?
Moral - Never dismiss the obvious.
Posted By: darrellt
Date Posted: January 24, 2009 at 11:30 AM
This was already installed when I bought the truck used. I never looked into the workings till I recently had a radio stolen. So I checked all the workings and found basically what I posted. Everything else seem to work correctly. lock, unlock and start. just wont arm unless the door is open.
Posted By: loneranger
Date Posted: January 24, 2009 at 11:42 AM
I'll let someone else chime in who has knowledge of the 2002 Avalanche factory alarm. If the factory alarm still has its' default programming, my assumption would be something to do with the 160XV and domelight supervision being integrated. I could be way off base though.
-------------
Ideal - cmon dude, add to topics in a useful manner, not stuff that is obvious.
Story - Phzzzt! Hey, what happened?! ... Isn't it obvious?
Moral - Never dismiss the obvious.
Posted By: darrellt
Date Posted: January 24, 2009 at 11:44 AM
Thats cool thanks for the input. I am stumped.
Posted By: CutDog504
Date Posted: January 24, 2009 at 2:05 PM
Do you still use the factory remotes? Or do you use the viper remotes? The fob you mentioned pressing with the door open, was it factory or the viper one? If its the viper one you regularly use and are referring to, then its an installation error. The installer didn't properly wire it up to arm and disarm the factory alarm. The lock output wire from the remote start module needs to be split with two diodes be be able to pulse the door trigger and the lock wire at the same time to rearm the factory alarm, basically to duplicate what you are doing, locking the door while its open. Thats how you have to arm the factory alarm.
Posted By: Chris Luongo
Date Posted: January 24, 2009 at 5:33 PM
That Viper should have some kind of other output that makes a ground not only after the remote start shuts down, but also every time Lock is pressed on the Viper remote.
Should be called "factory rearm", if I remember DEI's terminology correctly.
You could try connecting that wire to the driver's doorpin wire at the BCM, under the steering column.
So, when you go to lock the doors with the Viper remote, it'll also simulate the driver's door being open at the same time.
It's all a gamble, though. The Avalanche's design requires the door to be opened BEFORE locking the doors.
If the Viper's rearm pulse occurs at exactly the same time as the lock pulse, it won't work. The rearm pulse has to happen a little bit before the lock pulse.
There's really no way to know for sure if it'll work until you try it. Every brand of remote starter is going to have slightly different timing on its outputs.
Posted By: darrellt
Date Posted: January 24, 2009 at 6:04 PM
Viper remotes. All that came with the truck. Thats exactly right. With the factory rearm wire. I took 2 relays and simulated the locking proccess. I also took a couple diodes and isolated the ground I was using for the lock and used that wire to simulate the door being open and it works fine. Now the only time the system is not armed is when the remote start has it running. However when it times out or I shut it off it then also rearms the alarm. Thanks for your help.
Posted By: loneranger
Date Posted: January 24, 2009 at 6:32 PM
Like I said, I could be way off base and I was.
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Ideal - cmon dude, add to topics in a useful manner, not stuff that is obvious.
Story - Phzzzt! Hey, what happened?! ... Isn't it obvious?
Moral - Never dismiss the obvious.
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