Alarm not going off but lights flashing

[Roadster1]

Hello
After triggering alarm by mistake then realising that the lights flash but no sound , doing searches there seems to be a siren fitted to rear in bumper somewhere and that it chirps when alarm sets which mine does not. I'm thinking possibly somebody has disconnected it somewhere so it did not go off or it's faulty . Anybody know which fuse for the siren should I look at ,is there a fuse at rear , would the bonnet switch which seems to cause most alarm probs possibly be at fault ? Or what happens if that is disconnected , the interior sensor seems to work fine
Any help would be much appreciated
It's a 2003 2.5
Cheers rog

 

[Roadster1]

After doing a load of reading up on the subject could it be the siren in rear wheel arch also anyone know what fuse I should be looking at
Cheers rog

 

[DR-Z]

Chirping when the alarm is set is an option, and can be turned off via programming. Mine does not chirp, which is how I like it. But it should sound when the alarm is triggered.

 

[mac27040]

Here's the codes

https://docs.google.com/spreadsheet/lv?key=0Amq__Aa0CePNdF9Hcl9kQW9PQ3VhZFNmX0h0SjFvMmc

 

[Roadster1]

Hi
No I have no sound im thinking the siren is fecked , looks oike you have to get the rear wheel liner out and it's in there a few pictures show them corroded inside and the rechargeable batteries fecked !
Cheers Rog