Viper 791xv
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=49113
Printed Date: May 10, 2024 at 3:05 PM
Topic: Viper 791xv
Posted By: grtn316
Subject: Viper 791xv
Date Posted: February 01, 2005 at 11:55 AM
I just got a Viper 791xv alarm/remote start responder installed yesterday. I have a couple of questions and possible problems. First, I have to hit my truck pretty had to sound the alarm, and there is no warn away, no matter how hard i hit it. The installer told me in about a week it should be more sensitive...will the warn away engage as well? Next problem, when I press lock, within 5 seconds I can press lock again and set a level of security ranging from 1-5..according to the manual. This does not work, the alarm just sounds after the second press within 5 seconds. Do I need additional parts, or is there something I'm missing? Thanks,
Replies:
Posted By: mobile1
Date Posted: February 01, 2005 at 8:00 PM
installer error. the warn away isn't there because the harness for the shock sensor is backwards. It sounds like you want the shock sensor a little more sensitive also, so I would bring it back to your installer and have them fix this.
Posted By: sroth140
Date Posted: February 02, 2005 at 1:35 AM
it sounds like the sensor is mounted/secured poorly. i doubt the harness is "backwards". across the harness there is 12v, full trigger, warn away, and status/ground. the brain picks up either the lower warn away voltage or higher full trigger voltage. it doesnt matter which one sends it, thats how multiplexing different sensor together works. besides, the ground and 12v would be backwards thus not function. DEI ports only fit one way too. sensitivity generally doesnt need to be adjusted, especially up. it seems to be more down than anything, unless you want the vibrations from the car starting next to yours to set it off. moving on, nothing on a security/convenience install will become something its not after a week. that statement doesnt even make sense unless the installer plans on it becoming a worse mount job. warn away doesnt just appear after a while its there from the beginning. its just a lower voltage form the shock impact that is sent to the brain. I.E. have them properly remount it. hitting lock, then lock again will not add levels of security. it takes them away. who sets their alarm to the max by pressing lock 5 times? just press lock and walk away. that sets all zones (that are installed such as a hood and trunk trigger). the ignition is hooked up automatically, the doors better be hooked up, the hood and trunk may be extra parts/labor depending on where you go, and the shock sensor zone is just plain messed up. ------------- MECP certified installer
Posted By: slammedb5
Date Posted: February 02, 2005 at 2:26 AM
Check shock sensor loaction. Most big time elec instalers will zip-tie to the steering column, which in a truck, is a pretty stable place. Have them move it to a large wire bundle or some other location to maximize sensitivity. As for setting a level of security, do you mean zones?
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EK Civic
security
no audio
Posted By: sroth140
Date Posted: February 02, 2005 at 9:28 AM
each trigger is a zone. notice when the alarm has been triggered, when you unlock the vehicle it chirps more than twice. the number of chirps tells you what zone was triggered. read the owners/install book to determine what each zone is, such as shock, hood, trunk, ignition, and doors.
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MECP certified installer
Posted By: aaronU
Date Posted: February 02, 2005 at 9:35 AM
quick qustion while on the subject. most of the good installers out there would put a shock sensor on a large wire bundle?
Posted By: sroth140
Date Posted: February 02, 2005 at 12:13 PM
would they? possibly. it depends on the vehicle and past success/failure with it.
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MECP certified installer
Posted By: aaronU
Date Posted: February 02, 2005 at 12:19 PM
Ok, just trying to get the most information that I can before I do my own. I am also installing on a truck (compact) and looking for other's successes/failures like you said.
Posted By: grtn316
Date Posted: February 02, 2005 at 12:19 PM
Thanks for all the great info. Looks like im going to have to take it back to the installer and have him put the shock sensor in a better place..where would the best place be? When I push lock, then lock again it should set it in a different zone, but it doesnt...it sounds the alarm. I prob wont use the zone buttons..but it seems as if maybe its not hooked up correctly either??? Even though Im not gonna use it...it should still work right?
Posted By: grtn316
Date Posted: February 02, 2005 at 1:53 PM
Oh yea...when I push lock. It flashes that sensor 1 and 2 are engaged. Would this be refering to the shock sensor and the mercury switch(underneath my hood)?
Posted By: sroth140
Date Posted: February 02, 2005 at 2:05 PM
um... it should just flip the unlock icon to lock, flash tx/rx, and say arm.
does it beep for lock then a second later beep again and flash 1,2? if its doing that it means the zones were still active and will not arm until they become deactive. this is most commonly due to a vehicle with a dome light delay or the installer not installing a diode between seperate triggers.
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MECP certified installer
Posted By: grtn316
Date Posted: February 02, 2005 at 2:15 PM
it locks, flashes tx/rx, says arm. It was in vibrate mode... I push lock, it vibrates. Then a second or 2 later it vibrates again and flashes 1 and 2 with the word sensor below it. My vehicle has a dome light delay for about 15 seconds. When it becomes active, should beep me to let me know its active? Also, can you read my post above the one you just read, and help me out with that? Thanks!
Posted By: mobile1
Date Posted: February 06, 2005 at 8:33 AM
it sounds like the sensor is mounted/secured poorly. i doubt the harness is "backwards". across the harness there is 12v, full trigger, warn away, and status/ground. The trigger wires in shock sensor's harness are multiplexed. on one end of the harness there is an open wire, on the other end there is a looped wire. the looped end of the plug must be at the shock sensor or you will not have a warn away. If you don't believe me call DEI. I had this problem in the past and called their tech support. they told me to flip the harness around and bingo, worked fine.
Posted By: mobile1
Date Posted: February 06, 2005 at 8:34 AM
sorry i was quoting sroth at the begining
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