3315618 - E3040 CENTRAL LOCKING - Functional description

Functional description

The integrated services control unit M40 manages the operation of the central door locking system. Control unit M40 is supplied directly by the battery pin 7 of connector B from the line protected by fuse F63 of the luggage compartment junction unit B45; pin 6 of connector B is earthed. The control unit M40 receives the commands to lock (pin 5 of connector C) or unlock (pin 12 of connector C) the front doors, coming from the switches (handles) in the front locks N50 and N51, or the remote control receiver M35 (pins 6 and 13 of connector C) See E7015 ALARM . The control unit M40 also receives signals at pin 17 and 19 of connector C for the switch in the control unit on the tunnel H36 for locking/unlocking the doors from the inside. The control unit M40 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 5 and 4 of connector B. The control unit also receives control signals on the status of the locks at pins 13, 14, 15 and 16 of connector B of M40 which are the same signals that light up the 'doors open' LEDs in the instrument panel and which control the timed operation of some lights See E2510 COURTESY LIGHTS . The locks are unlocked whtn the intertia switch I50, which is connected to pin 12 of connector B of M40, is operated.