199001301 - E3040 CENTRAL LOCKING - FUNCTIONAL DESCRIPTION (3 door)

FUNCTIONAL DESCRIPTION

The door lock/release function is controlled by Body Computer M1.Body Computer M1 receives the following inputs:- the locking/unlocking signals from the aerial-receiver for the remote control P93 are connected to pins 1 and 2 of connector K of M1 (until 12/06) and to pins 32 and 47 of connector A of M1 (from 01/07);- lock/release signals from the key pawl located in lock N50, at pin 29 of connector A of M1;- the negative signal from the lock/release button, located in control unit H90, at pin 39 of connector D of M1; a reference earth reaches pin 5 of H90 from pin 49 of connector D.Body Computer M1 - connector G - is supplied directly from the battery from a line protected by maxifuse F2 of engine compartment control unit B1. It is ignition-operated (INT) at pin 32 of connector D. Pin 10 of connector H of M1 supplies a reference earth to the Body Computer.According to the control logic illustrated, Body Computer M1 controls the geared motors for the door locks: the joint power supply for the motors is sent from pin 19 of connector E; the locking/unlocking motors (B/S) are operated from pin 17 of connector E; the dead lock motors (DL) for locks N50 and N51 are operated from pin 18 of connector E.The signal LED in control unit H90 is turned on by a signal from pin 1 of connector D of M1.The activation of the inertia switch I50 is indicated at pin 23 of connector A of the Body Computer M1 : this signal, as described previously, causes the opening of the doors.Body Computer M1 is connected via the CAN line to instrument panel E50, to which it sends a signal that turns on the door open warning light, where necessary, and activates the buzzer to give an acoustic signal.