Discovery 2. Manual — part 324

ALARM SYSTEM AND HORN

DESCRIPTION AND OPERATION 86-4-1

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ALARM SYSTEM AND HORN

DESCRIPTION AND OPERATION

ALARM SYSTEM AND HORN

86-4-2

DESCRIPTION AND OPERATION

Alarm system component layout

RHD shown, LHD similar

ALARM SYSTEM AND HORN

DESCRIPTION AND OPERATION

86-4-3

1 Theft deterrent LED
2 Receiver
3 Volumetric sensors
4 Central door locking switch
5 Body Control Unit (BCU)
6 Bonnet activated alarm switch
7 Vehicle horn
8 Alarm sounder
9 Fuel cut off switch

10 Fuel flap release switch
11 Door latch switches, drivers door key lock/

unlock switches

12 Battery Backed Up Sounder (BBUS)
13 Passive remobilisation exciter coil

ALARM SYSTEM AND HORN

86-4-4

DESCRIPTION AND OPERATION

Alarm system block diagram

1 Body Control Unit (BCU)
2 Remote handset
3 Receiver
4 Fuel cut off switch
5 Ignition switch
6 Central door locking switch
7 Volumetric sensors
8 Bonnet activated alarm switch
9 Drivers door key lock/unlock switches

10 Door latch switches

11 Fuel flap release switch
12 Intelligent Driver Module (IDM)
13 Battery Backed Up Sounder (BBUS)
14 Alarm sounder
15 Vehicle horns
16 Direction indicators
17 Door lock actuators
18 Engine Control Module (ECM)
19 Starter motor