Viper 791 Door Locks
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=45420
Printed Date: June 13, 2024 at 5:19 PM
Topic: Viper 791 Door Locks
Posted By: brentswanton
Subject: Viper 791 Door Locks
Date Posted: December 17, 2004 at 11:47 AM
I just installed this alarm in a 04 Toyota Tacom but cant get the lock and unlock to work. I have found the appropriate wire on the front of the fuse box. The wires show ground when testing them with the door key switch. Also I can tap the wires with a temp ground and the door locks work. The blue wire on the alarm show to always be grounded and the green wires shows nothing even when you arm or disarm the alarm. These should be sending negative pulses right? Thanks Brent
Replies:
Posted By: daniel2002p
Date Posted: December 17, 2004 at 11:58 AM
if you are using a 451M which I am assuming you are since they come with the alarm, and if you are not, the wires straight from the alarm are not powerful enough for door locks. Make sure that on your 451M your purple and PURPLE / black (usually already bundled together) wire is grounded and then your blue and green will be lock and unlock.
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2005 Toyota Corolla S
1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!
Posted By: brentswanton
Date Posted: December 17, 2004 at 12:05 PM
sorry whats the 451 M? Im just using what came with system.
Posted By: brentswanton
Date Posted: December 17, 2004 at 12:42 PM
is the 451M built into the brain part of the alarm? What purple and prurple/Black wire are you refering to? What harness are they on.
Posted By: brentswanton
Date Posted: December 17, 2004 at 4:54 PM
Anybody? My lock type is B which only requires a neg pulse on the fac relay to work. Dont think I need the 451 M relay. But still my alarm lock and unlock wires dont seem to be working right. One wire shows ground all the time and the others shows nothing. Im not using the sec H2 harness if this makes a diff, along with several other wire. Does something have to be hooked up to make the door lock wires pulse negative.
Posted By: Scott35
Date Posted: December 17, 2004 at 6:25 PM
Is this a 4door Tacoma?
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Tacomacrew
Posted By: brentswanton
Date Posted: December 17, 2004 at 6:42 PM
yes 4 door came with factory Keyless entry and alarm.
Posted By: daze
Date Posted: December 17, 2004 at 6:49 PM
how are you testing the door locks ? Are you pressing the switch or using the key ? What system are you installing ?
Posted By: Scott35
Date Posted: December 17, 2004 at 6:51 PM
You are checking with the passenger side door lock, right?
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Tacomacrew
Posted By: Scott35
Date Posted: December 17, 2004 at 6:55 PM
Lock is gray, unlock is purple. In front of fuse box.
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Tacomacrew
Posted By: Scott35
Date Posted: December 17, 2004 at 6:56 PM
Lock is gray, unlock is purple. In front of fuse box.
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Tacomacrew
Posted By: brentswanton
Date Posted: December 17, 2004 at 7:04 PM
yes These are the wires Im using. Ive tested them by using the key in the outside driver door lock. Also I can ground a seprate wire and touch each wire to the purple ogrey wire and it will operate all door locks.
Posted By: brentswanton
Date Posted: December 17, 2004 at 7:06 PM
I just dont seem to be getting negative pulses from the alarm blue and green wires. How does the alarm know whether to send pos or neg pulses to these wires.
Posted By: daze
Date Posted: December 17, 2004 at 9:26 PM
you need to key the passanger door. say when you hit the lock button: when one wire gets positive, the other gets negative and when you hit un-lock it reverses. if you have ground on one wire all the time, you may have a different style locks or simply the wrong wires
Posted By: daniel2002p
Date Posted: December 18, 2004 at 12:21 AM
brentswanton wrote:
sorry whats the 451 M? Im just using what came with system.
it is the small one by one inch box that came with the alarm that plugs into the doorlock hole on the brain with all the wires I have stated earlier are found. if you need more helop, you can just pm me or write me an email, I have the exact same car and know what it need, since I have the similar alarm on it. ------------- 2005 Toyota Corolla S
1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!
Posted By: brentswanton
Date Posted: December 18, 2004 at 7:20 AM
Well I found out what the problem was. I had the door lock harness plugged into the writer port. Amazing how good it works when plugged into the right spot. Never intall when tired! Thanks for everyones help. Brent
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