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FIAT TIPO -38- REV 0.0
Door locking function.
The electric door locks are controlled by the BCM. This locks and unlocks the doors on the basis of
two control types: external and internal.
External controls.
The external door locking/unlocking commands can arrive from the following components:
Closing/opening buttons on RF remote controls of keys
Key cylinder on driver door handle
The BCM receives the RF signals from the locking/unlocking buttons on the remote controls via an
aerial. The movement of the key cylinder on the driver door handle is detected by a switch connected
electrically to the BCM.
Internal Controls.
The internal door locking/unlocking commands can arrive from the following components:
Button on the central control panel.
Car speed above 20 km/h (speed information for BCM via CAN).
Door unlock request from FPS (Fire Prevention System).
In every ignition switch position (OFF, RUN, START) the BCM, before sending the door
locking/unlocking command, checks the status of the doors (open or closed) through the switches in
the locks.
Status of door status switches.
Driver side door switch : if the door is closed the switch is open; if the door is open the switch is
closed.
Passenger side door switch : if the door is closed the switch is open; if the door is open the switch is
closed.
Rear door switches: if the doors are closed the switches (left and right) are open; if the doors are
open, the switches are closed.
Tailgate switch : if the tailgate is closed, the switch is closed; if the tailgate is open, the switch is open.
Bonnet switch: if the bonnet is open, the switch is open; if the bonnet is closed, the switch is closed
(the bonnet switch is only present if there is the alarm).
The BCMs on EMEA-version vehicles cannot manage door locking if one or more doors are open.
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