The alarm system is controlled by alarm control unit
M30
integral with the siren.
The control unit is supplied directly by
the battery at pin 3 of connector A from the line for the maxifuse
J/B1 of
B5 and is protected by fuse F10 of the junction unit
B1 and at pin 7 of connector B (supply for the direction indicators)
from the line protected by fuse F9 ; still for the junction unit
B1 .
The supply controlled by the ignition (INT)
reaches pin 12 of connector B for control unit
M30
. through
the line protected by fuse
F1 of the control unit B1 .Pin 9 of connector A is earthed.
The control unit
M30 controls the closure
of the doors via switches N50 , N55 , N51 , N56 which send an earth
signal, if the door is open, to pins 8, 15, 9, 16 of connector B.
The bonnet lid is controlled by switch
I10
, which is connected to pin 18 of connector B, while the boot lid
is controlled by switch I11 , which is connected to pin 1 of connector
B (the same switch turns on the boot light:
See
E2520
GLOVE COMPARTMENT LIGHT - LUGGAGE COMPARTMENT LIGHT
- SUN VISOR LIGHT
)
Pin 13 of connector B supplies the emergency
switch
H70 which sends the ON and OFF signals to pins 7 and
4, respectively of connector A.
Pin 1 of connector A of
M30
sends
the control signal for the alarm LED, located - up to May '99 -
in the switch control panel
H90
, pin 11 of connector A
or located separately in the centre of the dashboard
E40
.
Volumetric sensor unit
K62 receives
supply and earth signals from pins 8 and 11 of connector A of M30
, and sends on the alarm control signal to pin 12 of connector A
of M30 .
Pins 1 and 2 of connector B of
M30 produce
control signals for turn signals (
See
E2020
DIRECTION INDICATORS /
HAZARD WARNING LIGHTS
).
The receiver for the remote control
M35
is supplied directly by the battery at pin 3 from the line protected
by fuse F10 and by a line protected by the ignition (INT) at pin
7 from the line protected by fuse F1 ; both fuses are located in
the junction unit B1 .
Pin 4 is earthed.
M35 (pins 5 and 6) gives out signals
for "door locking" and "door unlocking", respectively,
for the central locking control unit M80 (
See
E3040
CENTRAL LOCKING
).
The control unit
M30 and the receiver
M35 are both equipped with an autodiagnostic system which can be
used by connecting to connector R10 : it receives signals from pin
6 of connector A of M30 and from pin 2 of the remote control receiver
M35 .
This serial line also acts as a connection between
M30
and M35 .