Can the car start if the Alarm Circuit Board is removed?

[lindsay39]

I have an intermittent fault with the alarm on my 993 and Hamilton and Palmer have said they will test the Alarm circuit board if i take it out of the car and send it to them. However the turn round will be around 3 weeks. I am attending at Silverstone at the end of this month and I want to use the 993. Jim, at Hamilton and Palmer is only available on certain days and I forgot to ask him if the car will operate without the alarm circuit board. Does anyone know if the 993 can start and run without the alarm circuit board?

 

[lindsay39]

I have decided to take the alarm circuit board after the Silverstone event. I will let you know if the car fires up then.

 

[chas3.2]

Definitely won't start if it dose it's wired up wrong
that's it job.

 

[sesame]

Does the alarm go off at intermittent times, and is the car a coupe? I just wonder if it could be the same fault I had on my Carrera 3.2.
Steve

 

[lindsay39]

the alarm goes off intermittently by flashing the hazard lights but no siren ( I have proved that the siren does work when the alarm go off for correct reasons) the door indicators indicate that the alarm has fired. Recently it has started firing off so often that the battery is discharged within a 7 days

 

[Graham-S]

Have you checked both door switches work correctly. The bonnett switch and the engine lid. Both of these are built into the locking mechanism. On mine if any of these are not working the interior light, bonnet and engine bay lights are on.
You could try them 1 by 1. Use a screw driver to simulate the boot & bonnet lock is locked whilst still having them open to see the lights. Door switch try them 1 by 1. My drivers one does stick sometimes cause I can lock my self out with the engine running. I use the dash lock button to lock doors when in the car I get out and close the door and it locks again cause it didn't see the door as open! Lesson learnt

Hope this helps a bit

Graham

 

[lindsay39]

when you lock the car the alarm door flashes that indicate the alarm is correctly set, then days later the hazards lights will flash. I explained the problems to Jim at Hamilton and Palmer and the general view is that the alarm is miss-firing as the siren does not sound. I will take the circuit board out of the car and let Hamilton and Palmer test the circuit board.

 

[sesame]

My 3.2 is a bit different, seems to be a simpler Porsche alarm I had fitted, no flashing hazards. I was checking over the places like Graham has mentioned. After finding these places were working okay I was back at square one and the alarm was triggering more frequently, very annoying - I had to disconnect the battery every time took the car out! It was after I touched the roof over the drivers door and the alarm went off I took this as an important clue. I went inside and prized the driver side interior light out of the headlining. I found the feed wire connector had been rubbing against the inside off the roof and had worn down the plastic insulating sleeve. Pulling the connector off the interior light and rotating it 180 degrees and re-fitting it gave a clearance to the roof, plus I gave it a little push to bend it in a bit too. Now I had a few millimeters of air gap and no more false alarms! If only the connector had been installed that way around at the factory I would never of had a problem! What a headache it had been trying to think what it could be, and all the areas I had had apart looking for it to turn out to be something so simple. I hope you find your fault soon so you can get this annoyance behind you and you can get back to enjoying your car fully again.
Steve

 

[lindsay39]

This issue has been a problem for over a year and is getting more frequent. If Hamilton and Palmer find no fault with the circuit board then i will be back at square one and then will have to start looking at the wiring.