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door triggers randomly going off?


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dmasjz45 
Member - Posts: 21
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Joined: April 17, 2007
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Posted: August 15, 2007 at 7:28 PM / IP Logged  
on a 1999 grand prix gt and compustar cm3000, diode isolated both doors, seem to work fine when tested w/ volt meter. Have factory alarm still hooked up but w/ disarm wire. Can't figure out why alarm randomly says a door is open. Any help is appreciated, thanks
dmasjz45 
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Joined: April 17, 2007
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Posted: August 15, 2007 at 8:06 PM / IP Logged  
actually, it looks like once the triggers go on and sound the alarm (maybe 20 min after alarm armed), they stay on for good...What's going on here
flashmcclain 
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Posted: August 15, 2007 at 8:16 PM / IP Logged  

Every 25 to 35 minutes the PCM module will try to talk to the doors. Fix is to cut the door trigger, add diode between the connection then grab door trigger on door pin in front of diode.

Hope that helps :)

Educate.Educate.Educate!
dmasjz45 
Member - Posts: 21
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Joined: April 17, 2007
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Posted: August 15, 2007 at 8:20 PM / IP Logged  
That sounds great and what I was looking for, but I'm not quite that advanced yet. Cut the wires I already have for the triggers, diode them, and then grab the signal right before the diode on the alarm side or door side? Thanks,, appreciate it
flashmcclain 
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Posted: August 15, 2007 at 8:40 PM / IP Logged  
Door side, you want it that way so when the door is opened the alarm goes off.
Educate.Educate.Educate!
dmasjz45 
Member - Posts: 21
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Joined: April 17, 2007
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Posted: August 15, 2007 at 8:57 PM / IP Logged  
door triggers randomly going off? -- posted image.
Im still kinda lost... I have it like this (or like this http://64.85.6.129/extrainfo/diagrams/840_GRAND-PRIX_(-)%20NEGATIVE%20DOOR%20PIN%20ISOLATION%20CIRCUIT.pdf )
But your sayin do it like this?
Wouldn't that kinda be the same thing? And this will stop the PCM from falsely saying the door is open?
door triggers randomly going off? -- posted image.
dmasjz45 
Member - Posts: 21
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Joined: April 17, 2007
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Posted: August 16, 2007 at 12:50 PM / IP Logged  
This seemed to work...Followed the 1076 in downloads for fords, been waiting a good 20 minutes now for it to sound off and it hasn't...Just for anyone that reads this..Thanks flash
flashmcclain 
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Joined: June 05, 2007
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Posted: August 16, 2007 at 2:07 PM / IP Logged  

Welcom :) Let me know if I can assist you with anything else.

Educate.Educate.Educate!
steezs 
Copper - Posts: 172
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Joined: October 30, 2005
Location: Canada
Posted: August 19, 2007 at 3:39 PM / IP Logged  
Those are some good drawings lol
the duce

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