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Old 12-06-2019   #1
Join Date: Feb 2019
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Portugal 
Unhappy Confusing alarm problem

Hi, I bought the car early February this year, since then I fixed many problems including the forgotten key fob by the body computer, but when I lock the car the alarm does not work, it has sensors on both side (Image 1 and 2) but no top controls (Image 3) but the strange part is that my siren is not behind the scuttle panel indicating it was an aftermarket thing(Image 4) as you can see the wires to the connector are all black, the bonnet has a magnetic switch (Image 5) and not a normal click thing.
The connection of the siren go to the battery tray, and under the fuse box, 1 wire is going to the negative lead(Image 6), one to the positive(Image 7), one to the bonnet switch, and one to the connector under the fuse box(Image 8Blue e black wire). The wiring is not perfect but its not the problem because if i disconnect the siren i recive a bonnet open error, only when i disconnect the siren, when the siren is connected even with the bonnet open i dont recive anything in the dashboard. No horns sound when i close the car or if even if i stay inside the car, the blinkers blink once and stop, and everitime i move they blink once and stop, only after a good while the start working intermintenly. I did try a proxy alignment to try to make the alarm work but with no success, it sends out errors to the body computer, no signal from the siren, no signal from ultrasound sensor, no signal from tilt sensor.
I also have this thing(Image 10) it starts blinking when I lock the car and stops when I unlock it.
Im still trying to find what cable is that for, its color codes AN or LN?

Thanks guys and have a nice day!!

Image 1:
Image 2:
Image 3:
Image 4:
Image 5:
Image 6:
Image 7:
Image 8:
Image 9:
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Last edited by ruilima; 12-06-2019 at 12:03.
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Old 12-06-2019   #2
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Netherlands 
re: Confusing alarm problem

Sorry, but i have a doubt that it's factory system so you can't synchronize it to the car. Check under fuse box where the wores from siren leads too i think youll fin a small box hidden somwhere. Good luck
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Old 12-06-2019   #3
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Portugal 
re: Confusing alarm problem

Quote Originally Posted by flyingdutch View Post
Sorry, but i have a doubt that it's factory system so you can't synchronize it to the car. Check under fuse box where the wores from siren leads too i think youll fin a small box hidden somwhere. Good luck
The only wire that i dont know where it goes is the one in the botton of the fuse box, is goes from B1A to D1 and thats all i know.
The siren is in good contition inside, no watter damage.
I dont see any box near the fuse box, could it be near the body computer?
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Old 12-06-2019   #4
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re: Confusing alarm problem

Trace the wiring from volume sensors of the pillars and you should find something
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Old 12-06-2019   #5
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Portugal 
re: Confusing alarm problem

Quote Originally Posted by flyingdutch View Post
Trace the wiring from volume sensors of the pillars and you should find something
Thanks i will try when i get home from work, is it possible to remove the body computer without removing the entire dash from the car?
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