2399259 - E3040 CENTRAL LOCKING - Description (Low setup)
Description
The door locks are operated simultaneously
by:
- the key;
- the locking and unlocking buttons on the control panel
in the centre of the dashboard;
- the remote control.
The remote control key has 3 buttons which
make it possible to operate the central locking system: one button
for unlocking the doors, one for locking the vehicle and one for releasing
the boot;
See E3045 BOOT AND FUEL FLAP OPENINGThe door unlocking/locking strategy is carried
out by two door control units and by the luggage compartment control
unit (for the rear doors) which control the effective state of the
locks through the signals arriving from the switches in the actual
locks and the key pawl: in this way, the 'lock' command is only
issued when all the doors are properly closed and the locks released;
conversely, the 'release' command is only issued when the locks are
locked;The two door lock/release button located
in the centre of the dashboard work in the same way as the controls
sent via key.The fuel filler is also locked/unlocked
at the same time as the doors, controlled by the same logic as the
driver's door.The locks come with an auxiliary motor that
is used for the Dead-lock function. The Dead Lock makes it possible
to mechanically disconnect the door interior opening handles so that
the door cannot be opened from the inside (e.g. after the glass
has been broken in a theft attempt; the dead lock also inhibits
the operation of the door locking/unlocking buttons in the dashboard. The dead lock function is engaged using
the key the moment the doors are locked, by turning the key a second
time within 1 second of the locking manoeuvre.An LED to the side of the above two
controls issues the following signals:
- Catches locked: the LED lights up for 3 seconds. If, when
the locks are locked some of the doors or the boot is not properly
shut, then the LED will flash at 3 Hz for 3 seconds;
- Dead lock engagement: the LED flashes twice for 0.5 seconds;
- Unlocking the locks: the LED goes out
The instrument panel downloads a door status
signal from the CAN and turns on the door open warning light and
the information is shown, at the same time, in the display; if one of
the doors or the boot or bonnet lid is open and the vehicle speed
is above around 4 Km/h then an acoustic signal is also emitted.A special instrument panel feature can be
used to decide whether to release all doors or only the driver side
front door while all other doors and the boot remain locked.When setting the unlocking of the driver's
door it is also possible to unlock the other doors by turning the
key a second time within 1 second of unlocking the driver's door.A special instrument panel feature can be
used to enable/disable the door lock beyond a set speed threshold
(30 km/h). In this case the Body Computer activates the door lock beyond
the set threshold.When the speed returns below the threshold,
the doors and the boot remain locked; after one of the doors is
opened, the function is re-enabled and when the threshold is exceeded, the
doors are locked once again.It is possible to select the boot
release operating mode using the special setup:
- boot unlocking controlled by the central locking: the
tailgate is considered, to all intents and purposes, as a fifth
door;
- independent boot release: the boot is locked when the
doors are locked, whilst it is possible to unlock it independently
of the unlocking of the doors. See E3045 BOOT AND FUEL FLAP OPENING.
The doors are automatically released if
the inertia switch is activated: the instrument panel receives a
signal from the switch, lights up the relevant warning light and
communicates the activation to the Body Computer via the CAN network.The door lock circuit is protected by a
special fuse located in the unit under the dashboard.The remote control receiver aerial is connected
directly to the Body Computer which contains the electronics for
the actual receiver.