Sigma alarm
#1
Sigma alarm
Hi lads im stuck in a bit of trouble.. My 99 uk 22b has a sigma alarm fitted to it with keypad in glove box an fob on key.. But wen i open the car by the button it jus immediately locks itself again, an wont let the windows up or down? Everything else is working, she starts an the led flashes an goes on an off.. Is this all alarm related, or what could be the problem..
Any advice welcome lads
Thanks
Any advice welcome lads
Thanks
#3
#4
#5
Those are 4 relays so Id hazard a guess and say its the window relay card.
Looks like a track has burned thru on one of the relays but it may be a track common to all the relays operation. Its an hefty track thats gone so a bit of cuurent has passed thru it. Shame they aren t plug-ins so you could swap it with another from somewhere else in the car for trial purposes.Manufacturers tend to use a general purpose part throughout the car.Id suspect that component rather than the M30. Saying that, Ive just had a thought.. there is a door sensor on the M30 that senses the driver door open time. If it doesnt stay open long enough it thinks the deactivation was a mistake and sets the alarm again. I ll have a think.
If you search online and can use a solder iron its a 5 minute job.
I ll have a look-see if I can find one.
Looks like a track has burned thru on one of the relays but it may be a track common to all the relays operation. Its an hefty track thats gone so a bit of cuurent has passed thru it. Shame they aren t plug-ins so you could swap it with another from somewhere else in the car for trial purposes.Manufacturers tend to use a general purpose part throughout the car.Id suspect that component rather than the M30. Saying that, Ive just had a thought.. there is a door sensor on the M30 that senses the driver door open time. If it doesnt stay open long enough it thinks the deactivation was a mistake and sets the alarm again. I ll have a think.
If you search online and can use a solder iron its a 5 minute job.
I ll have a look-see if I can find one.
#6
Hi how are you... I think i no what you mean here, i have changed a resistor and a transistor in this unit but it hasn't changed anything, id still be of the idea that a relay could be melted inside, what ever would of caused that?
Next thing I found out this evening, on the up and down switch for electric windows there is a blue an red wire cut and a loop wire took from it to the plug on this unit, and when i earth that wire the locks stay open now but the windows still dont work? Does that sound like anything you would off seen before?
I tried searching for a wirein diagram but nothing up..
Thank you
Next thing I found out this evening, on the up and down switch for electric windows there is a blue an red wire cut and a loop wire took from it to the plug on this unit, and when i earth that wire the locks stay open now but the windows still dont work? Does that sound like anything you would off seen before?
I tried searching for a wirein diagram but nothing up..
Thank you
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#11
As stig said, resolder the burned out track and see wot happens. It may be age related metal fatigue but my 35yrs in electronics tends to go with the..its burned out for a reason.. scenario so watch for smoke and smells after.
#13
Wel lads.. Well i re soldered the burned out piece and still nothing, so i worked out that it was a closure unit for the windows the four relays must of been 1 for each window so I popped out the relay that was on the the burned out part and switched it wih one for the back windows seeing as mine is 2 door and away it went.. I was glad to get it sorted..
So now i can remove the wee unit if i want to an link out the wires to the electric windows and it works without it to..
Because as you say it happen for a reason and I would be afraid of it causing a fire sometime? So i will play it by ear..
So now i can remove the wee unit if i want to an link out the wires to the electric windows and it works without it to..
Because as you say it happen for a reason and I would be afraid of it causing a fire sometime? So i will play it by ear..
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