The alarm system is managed by alarm control unit M030 , incorporated with the siren. The control unit receives a direct supply from the battery at pin 3 of connector A from the line for maxifuse J/B1 of B5 and protected by fuse F10 of junction unit B1 , and at pin 7 of connector B (supply for direction indicators) from the line protected by fuse F9 ; of junction unit B1 . The ignition-operated supply (INT) reaches pin 12 of connector B of control unit M30 . via the line protected by fuse F1 of junction unit B1 . Pin 9 of connector A is earthed. The control unit M30 controls the closing of the doors via the switches N50 , N55 , N51 , N56 which, if the door is open, sends an earth signal to pins 8, 15, 9, 16, respectively, of connector B. From pin 14 of connector B of M30 the doors open signal departs for the instrument panel Vedere E4010 STRUMENTO DI BORDO . The bonnet is controlled by switch I10 which is connected to pin 18 of connector B, whilst the boot is controlled by switch I11 which is connected to pin 17 of connector B. From pin 1 of connector A of M30 the control signal for the alarm LED, located in the centre of the dashboard E40 is sent
. The volumetric sensors K62 receive a power supply and earth from pins 8 and 11, respectively, of connector A of M30 and send the alarm control signal to pin 12 of connector A of M30 . From pins 1 and 2 of connector B of M30 the control signals for the direction indicators depart: Vedere E2020 LUCI DIREZIONE / EMERGENZA
. The receiver for the remote control M35 receives a direct power supply from the battery at pin 3 from the line protected by fuse F10 of junction unit B1 and an ignition-controlled power supply (INT) at pin 7 from the line protected by fuse B26 . Pin 4 is earthed. From M35 (pins 5 and 6) depart the "doors locked" and "doors unlocked" signals for the integrated services control unit M40, respectively
Vedere E3040 BLOCCAPORTE . The control unit M30 and the receiver M35 both are equipped with an autodiagnostic system that 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 .