Help with Lynx 2000 factory disarm

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=23853
Printed Date: May 05, 2025 at 8:18 PM

Topic: Help with Lynx 2000 factory disarm

Posted By: aksnowgod
Subject: Help with Lynx 2000 factory disarm
Date Posted: January 03, 2004 at 5:10 PM

I have been trying to get the factory disarm to work with a Lynx 2000 on a '02 Silverado. When I connect everything I cant get the factory alarm to disarm. I even traced all the way back to the drivers door unlock switch to make sure I have the correct lt. green wire.

The Lynx book says it sends a negative pulse on the disarm wire, but when I hook it do a DMM it measures a constant -12 when the system is disarmed and goes to 0 volts when the system is armed. It doesnt pulse. Is this correct or do I have a bad module? I am using the GREEN/ black wire on the Lynx with a diode (cathode facing factory unlock).

Any help would be greatly appreciated.

Thanks.

Replies:

Posted By: draasch
Date Posted: January 03, 2004 at 6:32 PM

check to see if you change it to a pulse output....

OEM Alarm Disarm L GREEN (-) AT B.C.M. BELOW THE STEERING COLUMN*

* There Are 3 Connectors In The BCM. The Disarm Wire Is Located In The Violet Connector.

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Good Luck
David
Ace Security
813-376-9778
Tampa
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Posted By: aksnowgod
Date Posted: January 03, 2004 at 6:36 PM

Thanks David -

Is there a way to change the Lynx to a pulse output. The book says it is pulse by default, but that isnt whats happening. The book also says you can program it via the remote, but doesnt tell how to program it. I have been thru all of the other programming modes and cant find anything in the programming mode for this.

Im running out of ideas short of using one of the aux connections. The book does explain how to change those to pulse output.