The alarm system is controlled by alarm
control unit
M30 integral with the siren.
The control unit is supplied directly from
the battery to pin 3 of connector A by a line protected by fuse
F17
and pin 7 of connector B (power supply to turn signals) by a line protected
by fuse
F8
; both fuses are located in the junction unit
B1
.
The supply controlled by the ignition (INT/A)
reaches pin 12 of connector B of control unit
M30
through
a line protected by fuse
F5
of control unit
B1
.
Pin 9 of connector A is earthed (
C31
).
Control unit
M30
controls door closure
via switches
N50, N55, N51, N56,
which send an earth signal
to pins 8, 15, 9 and 16 of connector B respectively when the door
is open (the same switches turn on the door open indication leds
(
See E2510 COURTESY LIGHTS
).
Switch
N50 is also used as an automatic
transmission management safety system (
See
E7050
AUTOMATIC TRANSMISSION
).
Switches
N50, N55, N51 and N56 are also
used by the door lock management system (
See
E3040
CENTRAL LOCKING
).
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
(the same switch turns on the boot light (
See
E2520
GLOVE COMPARTMENT LIGHT - LUGGAGE COMPARTMENT LIGHT
- SUN VISOR LIGHT
).
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.
Pin 1 of connector A of
M30
sends
alarm led control signal
E40
.
Pins 1 and 2 of connector B of
M30 produce
control signals for turn signals (
See
E2020
DIRECTION INDICATORS /
HAZARD WARNING LIGHTS
.
Remote control receiver
M35
is supplied
directly from the battery at pin 3 via fuse
F17
of control
unit
B1
.
An ignition-operated power supply (INT/A)
reaches pin 7 of
M35
via a line protected by fuse
F5
of control unit
B1
.
pin 4 is earthed
C30
.
M35 (pins 5 and 6) issue door lock and door
release signals (
See E3040 CENTRAL LOCKING
).
M35 pin 8 emits a signal to turn on interior
courtesy light (
See
E2510
COURTESY LIGHTS
);
Pin 10 emits a signal to open/close the boot and fuel filler flap.
M35
pin 1 sends a control signal
to relay
J43
(turn signals/hazard lights) to turn on the flashing
side lights upon alarm system activation via its internal contacts.
Control unit
M30 and receiver M35 are
both equipped with a self-diagnostic unit that may be used by connecting
the unit to connector R10 via pin 11.
This receives signals
from pin 6 of connector A of
M30
and pin 2 of remote control
receiver
M35
.
This serial line also acts as a connection
between
M30
and
M35
.