2892538 - E3040 CENTRAL LOCKING - Functional description
Functional description
The integrated services control unit
M40
manages the operation of the circuit.
The control unit
M40
is supplied
directly by the battery - in 8 of connector B - from the line for
maxifuse J/B2 of
B5
via fuse
B19
. Pin 13 of connector
B provides the earth.
The control unit M40 receives input
signals coming from the locks N50 and N51:
- for locking, if the earth signal reaches pin 15 of M40 ;
- for unlocking, if the earth signal reaches pin 16 of M40 .
The same signals arrive at pins 12 and 13
of connector A for the remote control receiver
M35
.
In accordance with the logic illustrated
previously, control unit
M40
controls the two front locks
N50
and
N51
and the rear locks
N55
and
N56
from
pins 4 and 5 of connector B.
The receiver for the remote control
M35
is supplied directly by the battery at pin 3 from the line protected
by fuse
F10
and by a line protected by the ignition (INT)
at pin 7 from the line protected by fuse
F1
; both fuses
are located in the junction unit
B1
. Pin 4 is earthed.
Pins 5 and 6 give out signals (door locking
and door unlocking) for the integrated services control unit
M40
.
If there is no alarm system, the receiver
M35
is
equipped with an autodiagnostic function which can be accessed by
connecting to connector
R10
: it receives signals from pin
2 of the remote control receiver
M35
.