The alarm system is managed by the alarm control unit integrated in the body computer M001 and is supplied by the battery by the line protected by fuse F39 - pin 17 connector H - and the supply controlled by the ignition (INT) reaches pins 9 and 13 of the latter protected by fuse F37.The body computer receives the signals from the receiver aerial P093 at pins 21 and 31 of connector B. See E3040 CENTRAL LOCKINGThe bonnet lid is controlled by switch I010 which is connected to pin 24 connector B of M001, whilst the signals coming from the boot are sent via the B-CAN from the luggage compartment control unit M063. See E2520 GLOVE COMPARTMENT LIGHT - LUGGAGE COMPARTMENT LIGHT - SUN VISOR LIGHTThe siren P090 receives a supply from the body computer M001, from pin 34 connector B and is connected with the dedicated serial line at pin 25.The roof control unit M062 incorporates the tilt sensor which is managed via the serial line by the body computer M001 at pin 7 connector F.The instrument panel E050 acquires the signals via the B-CAN for the state of the alarm system and activtes the signalling of the bonnet open message on the display; this function is only enabled with the ignition switched on (INT) to allow the activation of the alarm.Whilst at pins 8 and 16 connector it receives signals of the driver''s front door open and the driver''s rear door open, respectively.The front passenger door open and the rear passenger door open signals reach pins 25 and 26 connector G, respectively Wiring diagram E3040 CENTRAL LOCKING.These signals are also used for the timed operation of the courtesy lightsThe latter sends the boot opening negative signal from the no. plate lights unit and boot opening outer switch F055 to pin 26 connector F for switching on the boot light.The instrument panel manages the warning lights for the direction indicators and the buzzer after the alarm system is switched on.