'96 405 factory alam malfunction - no siren

Discussion in 'Peugeot 405' started by Greg, Jan 16, 2007.

  1. Greg

    Greg Guest

    Bugging problem, the key with remote central locking (Factory Fit
    Peugeot) works fine, immobiliser works fine, alarm works it will flash
    the headlamps if 'broken into' but it will not sound the siren. It's a
    late 405, 96 'N' reg GLX model TD Estate with Air Con. Does not have
    an immobliser keypad, it's all done automatically when you unlock the
    car with the key via infared remote built in.

    Does anyone know if it's possible to turn the sound off on these, if so
    how do you re-enable it? I see there is a fitting with a key by the
    radiator - we do not have the key and Peugeot cannot supply one, I
    cannot find a wiring diagram to understand what the wires are for
    (presuming this key under the bonnet mutes the alarm).

    Any help appreciated, either here or to *gregATgregandsarah.co.uk*
    (remove the 'AT' and replace with @ and remove the ** - anti spam

    If anyone needs to know anything about TUD3 and TUD5 1.4 & 1.5 alloy
    block/iron block diesel engines eg AX, 106, Saxo - please ask me - I
    will most likely know the answer as I have 'specialised' in building

    Greg, Jan 16, 2007
  2. Greg

    Bob Minchin Guest

    It is the under bonnet keyswitch. No key - no siren simple as that.
    I took the pug switch out and fitted a new one from rswww.com.
    There are five wires but two are a security loop through to set the alarm
    off if the cable is cut.
    Simple changeover switch function will do.

    Bob Minchin, Jan 16, 2007
  3. Greg

    Greg Guest

    Hi Bob,

    Very helpful - thankyou.

    Do you recall which wires you joined (loop through) or was it obvious
    when you dismantled the old switch? I'd love a wiring diagram of it,
    but If not I guess I can just rip it to pieces and hope to figure it
    out before I annoy the neighbors too much!

    Greg, Jan 19, 2007
  4. Greg

    Bob Minchin Guest

    Hi Greg

    Sorry no diagram and the memory is a bit rusty too this would have been
    about 1996 when I did it.
    I cut/peeled the sleeving at the back of the switch and the loop is obvious
    as it goes there and back with no connection to the switch
    Good Luck

    Bob Minchin, Jan 20, 2007
  5. Greg

    Greg Guest

    Hi Bob/anyone reading this in the future,

    Your memory was pretty good - I unbolted the switch from the slam panel
    of the car to allow me a bit more working room and stripped the
    insulation leading to it back 6in and also carefully stripped back the
    rubber weather sealing where the wires go into the switch.

    Hey presto, a security loop, a single wire which appears to do nothing
    and 2 wires connected to the swich. All wires are coloured white. I
    pulled out the loop and the single wire and laid them aside, now facing
    a switch with just 2 wires therefore a simple closed/open contact
    arrangement. I established with multimeter that open circuit = alarm
    siren on and closed contact (the 2 wires to the switch joined together)
    = alarm siren off.

    So I simply cut one wire off the switch and taped it up, making the
    alarm siren permanantly on. I then taped all the wires up again so it
    looked back to factory, or near enough, with good insulation tape. I
    then fitted the switch back on the slam pannel with a new stainless

    I could have put a switch on, but I figured I never want the alarm off,
    if I do I can simply lock the car by the key in the door which doesn't
    arm the alarm (as opposed to using the remote in the key, which locks
    the doors and arms the alarm).

    Tested the alarm and all is now good, including a chav-warning beep
    when I lock/arm it!

    Many thanks for the pointers from Bob, whom without I may have just cut
    through the security loop!
    Greg, Jan 23, 2007
  6. Greg

    Bob Minchin Guest


    Glad to have been able to help.
    I nearly said I thought the fifth wire went nowhere but I was not that
    confident of my memory. At the time, 1996, pug wanted over 100 notes for a
    new switch, key and associated wiring loom. Needless to say I did not cough
    up the dosh.

    Bob Minchin, Jan 23, 2007
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.