No alarm sounder, please advice location

kungpow1975 · May 26, 2010

hello all,

When my car alarm goes off the indicators flash, the immobiliser works, but the alarm doesnt sound, please advise the location of the sounder

thanks

sierrafery · May 26, 2010

Did u check if the horns are working?

kungpow1975 · May 26, 2010

yer my horn is working, i was under the impression that it is a different siren to the horns

sierrafery · May 26, 2010

If its a Disco 2 I can give u more info.......with D1 i'm not so familiar

kungpow1975 · May 26, 2010

its a disco 1, have scoured the internet but cannot find anything on the location of the siren

EDIT: its a 300 series 3.9 v8i

sierrafery · May 26, 2010

I'll check my Autodata and if i find it ..."I'll be back..."

discool · May 26, 2010

Yes the model/year of disco always helps

For a D1 RHD with a two button fob there's an electronic sounder with it's own battery back-up fitted under the bonnet on the off side wing, if u have one u can't miss it.

kungpow1975 · May 26, 2010

its a 1 button fob :S

discool · May 26, 2010

kungpow1975 said:
its a 1 button fob :S

Ok I assume u have the standard LR system then the alarm uses the horn as the sounder so it the horn works ok in normal operation the fault must lie with the alarm ECU or the output to where it connects within the wiring loom to the horn circuit.
Have u checked the ECU connection plug is secure.

kungpow1975 · May 26, 2010

discool said:
Ok the the alarm uses the horn as the sounder so it the horn works ok in normal operation the fault must lie with the alarm ECU or the output to where it connects within the wiring loom to the horn circuit.
Have u checked the ECU connection plug is secure.

I wouldn't have a clue where that would be sorry.

sierrafery · May 26, 2010

What I can confirm is that the horns must yell......some types have a BBUS(battery backed-up sounder) but this one is additional and its for the alarm status not for the big noise, this one is RH side in the engine bay approx over the wheel.

kungpow1975 · May 26, 2010

i looked on that rave thingy, and i did the diagnostic text and everything works but the horn. as expected, but even the rave disc says there is a seperate horn but i cannot find it for the life of me. so i would say they use the regular horns. just now i have to locate everything

discool · May 26, 2010

kungpow1975 said:
I wouldn't have a clue where that would be sorry.

Its behind the glove box I believe as i never had to do it, drop the lid/box down and u will see it, it an oblong box with a tv style antenna plug plus a multi-pin plug pluged into it.

No alarm sounder, please advice location

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