3315612 - E3040 CENTRAL LOCKING - Functional description
Functional description
The control unit
M80
manages the
operation of the central door locking system.
The control unit is supplied directly from
the battery at pin 30 of connector B through the line of the maxifuse
CENTR of
B5
and fuse
F19
of junction unit
B1
;
pin 85 of connector A provides the reference earth.
The control unit
M80
receives input
commands for locking (pin 87 of connector B) or for unlocking (pin
87a of connector B) the doors; coming from the remote control switches (knobs)
in the front locks
N50
and
N51
or from the receiver
for the remote control
M35
(for this component,
See E7015 ALARM
).
The control unit also receives signals on
the status of the rear door locks, coming from the motors
N55
and
N56
, at pins 87 and 30 respectively of connector A; they
are the same signals which light up the 'open doors' LEDs on the
instrument panel and which control the time delay of some lights
(
See E2510 COURTESY LIGHTS
).
In accordance with the logic described above,
the control unit
M80
controls the locks: the lock/unlock
signals for the motors of the front doors (
N50
and
N51
)
and rear doors (
N55
and
N56
) come from pins 85 and
86 of connector B.