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, respectively.
The doors open signal for the instrument
panel
See E4010 INSTRUMENT PANEL
leaves
pin 14 of connector B of
M30
.
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 17 of connector
B.
Pin 1 of connector A of
M30
sends
the signal for alarm LED, located in the centre of the dashboard
E40
.
The volumetric sensors
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) sends signals (door
locking and door unlocking) for the integrated services control
unit M40
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
.