how to test a factory disarm wire?

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=37219
Printed Date: May 09, 2024 at 6:22 PM

Topic: how to test a factory disarm wire?

Posted By: foxhound
Subject: how to test a factory disarm wire?
Date Posted: August 12, 2004 at 12:39 AM

What is the proper way to find if I have the correct wire? For my 03 Chevy S-10 I think it is a light green wire at the BCM but how can I tell? My OEM FOB no longer works so I dont know how to disarm or check if it works.

Thanks

Replies:

Posted By: JWorm
Date Posted: August 12, 2004 at 12:44 AM

Turn key in drivers door to unlock....wire will show ground. Turn key back to lock or center position, ground goes away.

Posted By: raydawg357
Date Posted: August 20, 2004 at 3:06 PM

CHEVROLET, S-10 PICKUP, 2003, Factory Alarm Disarm
The BCM (Body Control Module) is located to the right of the accelerator pedal below the radio. The plugs on the BCM face towards the driver side.

Disarm

lt. green

purple plug at BCM

-------------
Do it right the first time

Posted By: NowYaKnow
Date Posted: August 20, 2004 at 4:20 PM

As stated turn the key in the drivers door to the unlock position and the wire should read a ground, turn it back and the ground goes away.

If your using a test light, close all the doors and arm the factory alarm. You mentioned the key fobs don't work with the driver door open hit the lock switch once or twice and close the door the alarm should arm up. (Watch the icon on the cluster) Reach in and open the door which sets off the factory alarm. Hit the suspect wire with your test light and it should disarm.

I would suggest method one as poking around at the BCM with a test light isn't always the best idea. For your vehicle light green (-) is correct at the BCM or it might be easier to grab it in the drivers door jamb boot or where the door boot harness comes into the car.

Good luck,

Mike