Discovery II
ALARM SYSTEM AND HORN
DESCRIPTION AND OPERATION 86-4-17
Operation
Standard system functions
All vehicles have the following functions as standard.
l
Locking.
l
Unlocking.
l
Fuel cut off switch unlocking.
l
Internal locking.
l
Electric fuel flap release.
Locking
The doors are locked by pressing the lock button on the handset or by locking the vehicle from the driver's door with
the key.
In order to lock the vehicle, the following conditions must be met:
l
The driver's door is closed.
l
The ignition is off.
l
The fuel cut off switch is not tripped.
l
The bonnet is closed.
l
The vehicle is not super locked.
Depending on system configuration a mislock occurs if these conditions are not met. The doors may lock (depending
on condition not met) and the system may not fully arm, depending on configuration of the system. If a mislock occurs
an audible warning is emitted and the vehicle becomes partially armed.
Unlocking
The doors are unlocked by pressing the unlock button on the handset or by unlocking the vehicle from the driver's
door with the key. This may unlock only the driver's door or it may unlock all doors depending on system configuration.
Fuel cut off switch unlocking
In the event that the vehicle experiences a force strong enough to actuate the switch, all the doors on the vehicle
immediately unlock. The following conditions must be met for this to occur:
l
The security system is not armed.
l
The ignition is on.
This same action causes the fuel pump to shut off and disables the Engine Control Module (ECM). In some markets,
this action may also cause the direction indicators lights to flash.