Viper 791xv intermitent problems

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=53189
Printed Date: May 01, 2025 at 12:17 PM

Topic: Viper 791xv intermitent problems

Posted By: c0ckeyed00
Subject: Viper 791xv intermitent problems
Date Posted: April 04, 2005 at 2:48 AM

Thanks for looking!

I have a Viper 791xv and

1) sometimes when I unarm the alarm the doors don't ulock.(I have to unarm it, unlock it with my key then power unlock the other doors. The thing about it is that I can push power unlock on the door and the doors unlock.)

2) sometimes when I unarm the alarm and open the door, the domelight doesn't come. (When I close the door I just opened and open the other doors do see if the light goes on, it still doesn't.)

thanks for the help

Replies:

Posted By: KarTuneMan
Date Posted: April 04, 2005 at 5:24 AM

Whats the year make and model......?

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Posted By: c0ckeyed00
Date Posted: April 04, 2005 at 4:22 PM

02 Ford F250 CrewCab 4X4. Auto

Posted By: clank
Date Posted: April 05, 2005 at 11:59 PM

The ford has a gem module for the door locks. This module "falls asleep" the factory keyless pulses the door ajar wire and "wakes up" the module. You can test for this by rolling down your window and locking the door from the inside. Wait about 30 seconds and try your aftermarket keyless. If it does not work hit the lock/unlock in the truck and then your aftermarket should work. This problem is not presant when you remote start the truck because the circuit is energized before you hit the unlock. Post a reply if you need the bypass diagram.

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shocker

Posted By: dare_ds69
Date Posted: April 06, 2005 at 6:01 AM

https://www.directechs.com/techtips/pdfs/resources/security/directed_techtips/1094.pdf

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how own your mind, control your life.
MECP certified. always use a DMM

Posted By: c0ckeyed00
Date Posted: April 15, 2005 at 1:27 AM

thanks for the info.......do you have any insight on the intermitent domelight problem......sometimes when i open the door the domelight doesn't come on.....it started happening or i started noticing it after i installed the alarm.........but i guess if i install domelight super, it will take care of the problem huh!!!