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2005 tacoma front door lock problems


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crvz 
Member - Posts: 48
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Joined: February 18, 2003
Posted: February 15, 2007 at 3:57 PM / IP Logged  

I installed a Viper 791xv in a buddy's 4 door 2005 Toyota Tacoma in June of 2006.  The factory door locks require the double pulse to unlock (where the factory keyless entry system required to hit the button once for the drivers door, then again for the other 3 doors), and at the original time I installed the alarm I programmed it to do just that.  It worked fine for a number of months.  Recently, he has let me know that when he arms the truck, intermittently (though more often than not) the driver's door will not lock, and in about half of those instances the front passenger door will not lock either.  The rear doors always lock.  He also reports that this will take place at times when the lock button is pressed on the door (so not just when using the alarm).

First question (and the one I'm really hoping for); is there a quick easy fix that I just don't know about?

Second, where is the best place to start troubleshooting?

Third, is this something that is more likely on the vehicle side?  Or maybe a problem where the alarm integration has deteriorated the factory system?  Or just something on the alarm side (which I don't think is a reality, seeing as I only tapped into one wire for lock, and one for unlock)?

Anyways, I'd love to help him out with this, and I'm a little far removed from my days as an installer so any assistance is much appreciated!

(On another note, it's scares me to realize that I've not worked as an installer for 4 years already!)

Velocity Motors 
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Joined: March 08, 2002
Location: Manitoba, Canada
Posted: February 15, 2007 at 9:35 PM / IP Logged  
I too have a 2005 Tacoma Double cab and I set the system to double pulse unlock with the Compustar unit and have not had any problems at all. I rarely ever use the lock button on the door but have not had any problems with the double pulse unlock witht he Compustar.
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
draasch 
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Joined: February 07, 2003
Location: Florida, United States
Posted: February 16, 2007 at 6:59 AM / IP Logged  
see if this helps:
Power Lock BLUE/WHITE WHITE 10 PIN CONN IN #209
Power Unlock GRAY DRIVER KICK PANEL * **
* VIOLET In Same Connector Is Key Cylinder Wire. 1st NEGATIVE Pulse Will UNLOCK Driver Door Only, 2nd Pulse In 3 Sec Will UNLOCK All Doors. ** Child Saftey Wire Is WHITE/ RED (-) In Same 10 Pin Connector. #209- See Child Safety Door Lock Diagram
http://www.wiringinstructions.com/209.htm
Good Luck
David
Ace Security
813-376-9778
Tampa
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KarTuneMan 
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Joined: December 14, 2004
Location: Isle Of Man
Posted: February 16, 2007 at 8:12 AM / IP Logged  

For what I have in tech support the info you posted (draasch) is for a 4runner, not a Tacoma, they are different.

What I have for the Tacoma is

Lock and arm Purple, in the drivers kick. White connector that appears to come thru the door.

Disarm and unlock (double pulse) GREEN/ black, same connector.

I don't have any idea why I am posting this, because CRVZ said it worked fine, then quit working.......?

draasch 
Gold - Posts: 2,172
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Joined: February 07, 2003
Location: Florida, United States
Posted: February 16, 2007 at 5:10 PM / IP Logged  
my listing is under the tacoma....they might have it listed wong.
Make:   Toyota
Model: Tacoma
Year:    2005
This Database Was Last Updated On:    10/20/2006
Index #: 1853
Alarm
Constant 12 volts WHT/RED OR WHT/BLU IGNITION SWITCH HARNESS
Ignition 12 volts BLACK/ RED IGNITION SWITCH HARNESS
Starter BLACK/ WHITE IGNITION SWITCH HARNESS
Dome Light BLUE 13 PIN BLK CONN,FRT FUSE/JUNCTION BOX
Trunk Pin Switch NONE
Parking Lamp GREEN (+) REAR BODY HARNESS, LOW DRIVER KICK
Power Lock BLUE/WHITE WHITE 10 PIN CONN IN #209
Power Unlock GRAY DRIVER KICK PANEL * **
* VIOLET In Same Connector Is Key Cylinder Wire. 1st NEGATIVE Pulse Will UNLOCK Driver Door Only, 2nd Pulse In 3 Sec Will UNLOCK All Doors. ** Child Saftey Wire Is WHITE/ RED (-) In Same 10 Pin Connector. #209- See Child Safety Door Lock Diagram
Good Luck
David
Ace Security
813-376-9778
Tampa
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crvz 
Member - Posts: 48
Member spacespace
Joined: February 18, 2003
Posted: February 23, 2007 at 7:33 AM / IP Logged  
Well thanks for everyone's input.  A toyota tech said that some of the 2005 tacomas had the door lock wiring "reversed" at the factory, which will cause them to start flaking out after about 20000 miles or so.  My buddy is taking it to the shop today to have it looked at.  If it something else, I'll post an update, but I wanted to make this known should someone else run into the same problem.  Thanks again!

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