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Ford Open Circuit Door Pins


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soundnsecurity 
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Posted: February 24, 2014 at 7:38 AM / IP Logged  
i doing some research for an alarm im going to install on a 2010 F150 extended cab and i remember hearing something about the doorpins not being positive or negative, instead the circuit just goes open when you open a door. i look up a tech sheet and sure enough it says the pins are open circuit. what is the best way to interface with these doorpins? i would use the dome light but the alarm im installing doesnt seem to have the ability to remove the error chirp. any help would be appreciated thanks
freqsounds 
Copper - Posts: 289
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Joined: October 17, 2008
Location: Virginia, United States
Posted: February 24, 2014 at 7:50 AM / IP Logged  
I'm kind of in the same boat with my Saab.
Have you tried metering the wires to see if you get any (+) voltage or ground?
It may be possible that there is a voltage of some sort on the wire. Mine shows 4.1V when open, and 7.4V when closed, and the BCM turns off the circuit after 10 minutes, tricking the alarm into thinking all the doors are open.
Curious to see how this turns out.
No question is stupid or not worth asking. You were once a noob, right? :)
howie (aka: harryharris)
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Posted: February 24, 2014 at 8:03 AM / IP Logged  
If you're using DEI, either use a DB-ALL for these functions or in the programming set the door/hood triggers to N/closed from the default N/open.
Menu 1 items 13 and 14 option 1.
Test before boxing up.
freqsounds 
Copper - Posts: 289
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Joined: October 17, 2008
Location: Virginia, United States
Posted: February 24, 2014 at 8:22 AM / IP Logged  
The DBALL doesn't support the door triggers for Fords. They'd have to be hooked up through the alarm system.
@soundnsecurity, which alarm are you considering for your install? Also, which bypass module would you be using?
Still curious on the door trigger wires too! Ford Open Circuit Door Pins -- posted image.
No question is stupid or not worth asking. You were once a noob, right? :)
howie (aka: harryharris)
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Posted: February 24, 2014 at 8:43 AM / IP Logged  
So use a DEI system and program it the way I showed before.
Test before boxing up.
kreg357 
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Joined: January 30, 2009
Location: New York, United States
Posted: February 24, 2014 at 9:16 AM / IP Logged  
While you could program the DEI system for N.C. door trigger, you can only connect to and monitor one door. Standard diode isolation
does not work.   There are a few ways to handle them. DEI makes the DTIMazda module for this style trigger or you could build the
module yourself, following the TechTip #1921. Here is a link :     https://www.the12volt.com/installbay/file.asp?ID=930
Here is a pictorial on another Ford with these door trigger wires and his solution :
https://www.the12volt.com/installbay/forum_posts.asp?tid=132461&tpn=1&PN=1
Soldering is fun!
flobee4 
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Posted: February 24, 2014 at 6:22 PM / IP Logged  
EVO-All by Fortin detects the door triggers according to their site. The DTIMazda is discontinued and is hard to find. If you don't want to do the Tech Tip with the diodes and resistors, use the EVO
soundnsecurity 
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Posted: February 24, 2014 at 8:01 PM / IP Logged  
ill use the diodes and resistors, its seems easy enough. im trying to avoid having to buy a whole bypass module just for the doorpin interface. thanks for the information i knew it was out there but my searches weren't getting anywhere.
yellow_cake 
Copper - Posts: 178
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Joined: December 01, 2011
Location: Saskatchewan, Canada
Posted: February 27, 2014 at 5:10 PM / IP Logged  
That tech tip is the way to go about it, used it on an 05 Mustang for door monitoring and works like a charm.
sam369 
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Joined: December 18, 2014
Location: California, United States
Posted: February 02, 2015 at 1:30 AM / IP Logged  
I wonder why DTIMAZDA was discontinued. Not many people need it?
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