184002061 - E3040 CENTRAL LOCKING - FUNCTIONAL DESCRIPTION (LOW trim level)

Operational description

The locking/unlocking function for the doors is operated by the driver''s door control unit M66 connected via the CAN line to the Body Computer M1.The control unit M66 receives a supply at pin 7 of connector C from the line protected by fuse F36 of the junction unit under the dashboard B2 and at pin 2 of connector C from the line protected by fuse F32 of B2.Pins 1 and 8 of connector C of M66 are earthed.

The control unit M66 receives the following inputs:

  • the "locking" signals from the knobs, at pins 9 and 8 of connector B of M66;
  • the locking/unlocking signals from the key pawl, at pins 1 and -2 of connector B of M66;
  • the negative signals from the locking/unlocking buttons, located in the control unit on the tunnel H35, at pins 3 and 4 of connector B of M66;
  • the signals coming from the aerial-receiver P93 which is connected to pins 21 and 31 of connector B of M1.
According to the control logic illustrated, the control unit M66 controls the geared motors for the door locks: a power supply is sent to the motors from pins 4 and 12 of connector C; the motors for the four locks N50, N51, N55 and N56 are activated by pins 9 and 5 of connector C.The LED next to the controls on the tunnel H35 is activated by a positive command from pin 13 of connector A of M66.The fuel flap opening motor N58 is operated by the same control logic as the driver''s front door lock, from pins 6 and 10 of connector C of M66.The RF aerial-receiver P93 sends the Body Computer M1 the opening/closing signal for the doors and for the windows and the sun roof as well, connecting to pins 21 and 31 of connector BThe operation of the inertia switch I50 is signalled at pin 17 of connector D of the Body Computer M1 and this signal also causes the opening of the doors.