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Topic: Alarm (Read 1886 times) |
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Been having a bit of trouble with the alarm going off recently. It might wait a few hours (usually middle of the night  ) before it goes off, or it may start sounding after a few minutes.
Obviously my first thought is the bonnet switch, but how can you check this ?...... & if I disconnect it, will it just start beeping anyway ? 
What about the two sensors mounted inside the car, adjacent to the door pillars...are these particularly problematic ?
Advice please 
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wojtekor
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if you disconnect the bonnet switch the alarm won't even arm so there is no way it will start beeping 
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Alarm
« Reply #2 on: Jul 12th, 2009, 4:53am » |
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Thanks Woj ....So how do I identify the problem...i.e....confirm that it is the bonnet switch which is at fault ?
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Simmo
Administrator
I'm an OAP !
Posts: 5508
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Re: Alarm
« Reply #3 on: Jul 12th, 2009, 6:52am » |
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Jon. How about removing the switch and bridging the terminals?. I assume the alarm is triggered by a 'break' in the circuit but a check with a meter would confirm. If the switch appears to work correctly try a small piece of packing in the unit on the bonnet itself just to increase the pressure on the switch.
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Now I'm an OAP
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Chieftain
Full Member
Mechanically Challenged with a 24V Cosworth
Posts: 491
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Re: Alarm
« Reply #5 on: Jul 12th, 2009, 9:01am » |
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Woj do you think that would also work on an Escort? as her indoors alarm does the same as Johhny's
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Bob
if it ain't broke fix it and it will be
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wojtekor
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definitely worth a shot... i know for a fact that it works also for Mondeo...
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Alarm
« Reply #7 on: Jul 12th, 2009, 2:36pm » |
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Cheers guys for the advice .....A continuity check of the bonnet switch seems to say there is nothing wrong with it & it's switching fine. I suppose there is always the chance that it decided not to play up while I was testing it , so for the moment I've unplugged it & bridged the connector.
Just have to wait & see if it goes off again
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Alarm
« Reply #8 on: Jul 13th, 2009, 9:27am » |
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Alarm's gone off again, so it's not the bonnet switch at fault
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Chieftain
Full Member
Mechanically Challenged with a 24V Cosworth
Posts: 491
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Re: Alarm
« Reply #9 on: Jul 13th, 2009, 10:16am » |
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Damm!!! so far all quiet on her Escort, I think it is boot related as it has 3 plungers in the tail gate and one keeps sticking. found if I unlock the boot with key after car locked it seems to work. Not much use to oyu though JC
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Bob
if it ain't broke fix it and it will be
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Alarm
« Reply #10 on: Jul 13th, 2009, 10:58am » |
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Might be able to read it through OBD if you're at the Kent meet, although there may be some old codes,(mine often shows 3 boot related codes).
Since you have the internal sensors, I read somewhere about someone having their car alarm go off at night - went out with a torch & saw a moth flying about inside.
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ABS multiplug wheel sensor pins MK IV or MK 20
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wojtekor
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or a spider having a midnight walk... 
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Alarm
« Reply #12 on: Jul 13th, 2009, 4:04pm » |
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Definately no bugs flying about inside
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Simmo
Administrator
I'm an OAP !
Posts: 5508
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Re: Alarm
« Reply #13 on: Jul 13th, 2009, 6:13pm » |
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Jon. Have you tried spraying all the door locks?. The only other thing that sometimes causes problems is the contacts in them. If it is 'your' car then all the doors presumably get used regularly but it may be worth a try. As Dave says could the boot/hatch be the cause if it not absolutly tight. Again , I guess yours would get a fair bit of use and thus may be a bit 'loose'.
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tonyboy
Full Member
black2.924Vcoss ( No More )
  
Posts: 998
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Re: Alarm
« Reply #14 on: Jul 13th, 2009, 6:56pm » |
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Hello. just a thought . If it was one of the contacts on the boot, bonnet,or doors would it show on the dash where it tells you if there is something open...........
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I think i'm going, erm what do you call it..... Senial.... 
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Alarm
« Reply #15 on: Jul 14th, 2009, 10:05am » |
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Right then, checked the boot lock & it's fine & all wiring is on tight, the door locks seem fine although I haven't removed the door cards to check for any loose wiring yet.
One thing I did find though was that if I doubled locked myself in the car with the key fob (couldn't get out) & moved my hands over the motion sensors, the alarm didn't go off .....so am I to presume that the motion sensors aren't working ?....possibly they are non-motion sensors
I've disconnected them both for the moment to see how it goes....play it by ear
Incidently, with both motion sensors disconnected the flash on double lock still works, so it's still armed
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Alarm
« Reply #16 on: Jul 15th, 2009, 10:09am » |
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A whole 24 hours & the alarm hasn't gone off yet 
Fingers crossed it stays that way & that it was down to faulty motion sensors
Just a thought, I'm presuming the alarm is still set with the motion sensors unplugged as the flash on double lock is working, but how do I make sure...ie set the alarm off without breaking anything ?
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Alarm
« Reply #17 on: Jul 15th, 2009, 10:22am » |
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Sit in the car, lock using the fob, open the door.
Or, I would imagine, leave the window open, lock the door, reach in & open the door.
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ABS multiplug wheel sensor pins MK IV or MK 20
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Alarm
« Reply #18 on: Jul 15th, 2009, 10:44am » |
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Cheers Dave, alarm is working fine ....Armed & Ready
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Alarm
« Reply #19 on: Jul 16th, 2009, 2:29am » |
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Alarm's still behaving itself, so it looks like it was defo the motion sensors at fault
Don't think I'll replace them, as they seem a bit pointless .......Instead, I've got a much better idea
They may come in useful for a fake CCTV setup.......a small hole drilled in each one with a wired up red LED sticking out & black plastic covers over the sensors would look quite convincing I reckon ....
A couple of window stickers informing people that 'This vehicle is equipped with CCTV' & I reckon all the drunken yobs that get in will behave like angels & be more than willing to pay what the meter says
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