3315615 - E3040 CENTRAL LOCKING - Functional description (Right hand drive)

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 the commands to lock (pin 87 of connector B) or unlock (pin 87a of connector B) the doors, coming from the switches (handles) in the front locks N50 and N51 , or the remote control receiver M35 (for this component, see E7015 ALARM): it is the same commands that light up the 'doors open' LEDs in the instrument panel and which control the timing of certain lights (see E2510 - COURTESY LIGHTS). The control unit also receives signals on the state of the locks for the rear doors, coming from geared motors N55 and N56 , at pins 87 and 30 of connector A, respectively. these are the same signal which light up the 'doors ajar' LEDs in the instrument panel and which control the timed operation of some lights (see E2510 - COURTESY LIGHTS). The control unit M80 commands the locks on the basis of the logic illustrated previously; 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. The control unit M80 receives the signals for the switch in the control unit on the tunnel H36 for locking/unlocking the doors from the inside at pins 86 and 87a (connector A).