MG MG6 Series 2011 Service Manual page 904

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Safety and Restraints
Disarmed State
The BCM fully disarms the system on:
• Receiving receipt of a valid unlock request from the
handset unlock button
• Receiving receipt of a valid unlock request from the
driver's door unlock switch (In this case the BCM
temporarily disables zone 2 only for a period of 15
seconds. If a valid remote key unlock request has not
been received or a valid handset is docked.
• Docking of a valid handset.
The direction indicators flash once for 2 seconds to confirm
that the vehicle is disarmed.
If the driver's door unlock switch fails to open or short
circuits, then it will not be possible to disarm the alarm with
the emergency key; remote disarming will not be affected.
Alarm Event Memory
The BCM stores the reasons for the last ten alarm events
in EEPROM. This data can be retrieved via the diagnostics
connector.
On completion of an alarm cycle the BCM disables any active
warning signals for a period of 5 seconds. The BCM then
re-evaluates the status of all zones to determine if a valid trigger
still exists. This is done in the order of the queued zones.
For instance, if opening of the bonnet had triggered the most
recent sounding of the alarm, the software checks if the bonnet
is still open.
If after the 5 seconds has expired, a trigger condition still exists,
then the BCM shall immediately activate the warning devices
for a further alarm warning cycle. If no conditions to re-launch
the warning devices exist, then the security system shall enter
the armed state.
With the security system armed and the doors locked,
inserting an incorrect handset causes the security system to
be triggered.
If If If the
the security
the
security system
security
system has
system
Note:
the handset
the
the
handset is is is removed,
handset
removed, a a a valid
removed,
will silence
silence the
the alarm
alarm and
will
will
silence
the
alarm
Speed Related Locking
The BCM controls a speed-related locking function using a
speed signal originated from the ABS system. The speed
related locking function is set to off by default, but can be
configured by the dealer.
The BCM will automatically lock all doors when the vehicle
speed exceeds 5 km/h. This function will only operate once
per ignition cycle. Once locked, the doors can be unlocked
using the master locking switch, after which they will not
lock again until the BCM senses the ignition is turned off and
Version 2.0
has been
has
been triggered
been
triggered and
triggered
valid remote
valid
remote lock
remote
lock
lock request
request
request
and keep
keep the
the alarm
alarm armed.
armed.
and
keep
the
alarm
armed.
then on again. When speed related locking is functional, an
automatic unlock feature will unlock all the doors when the
ignition is turned off. On vehicles with an automatic gearbox,
the selector lever must be in the 'PARK' position before
the doors will unlock. The speed related locking feature is
programmable.
Bathrobe locking
It is possible to use the handset to lock the vehicle while then
engine is running and the vehicle is stationary. The vehicle's
alarm system, however, will not be armed.
Auto-relocking
If the vehicle is unlocked using the handset, but no opening
panels are operated within 30 seconds or the handset is
docked, the vehicle will relock automatically.
and
and
Vehicle Access
888

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