125002130 - E2012 MAIN BEAM HEADLAMPS - FUNCTIONAL DESCRIPTION

Functional description

The Body ComputerM1is connected, via the CAN line, to the instrument panelE50to manage the main beam headlamps warning light.The main beam headlamps activation signal is sent to pin 33 of connector B of the Body ComputerM1from the steering column switch unitH5.The ''ignition ON'' signal (INT) for the switch H1 reaches the underdashboard control unitB2at pin 11 of connector H and from there moves on to the Body ComputerM1(pin 9 of connector F).The Body ComputerM1 controls the supply to the main beam headlamps by sending an earth signal to the engine compartment control unit B1B- from pin 9 of connector A of M1 - which energizes the relay T2: this supplies the dipped headlamps F10 (left) and F11 (right).The circuit is protected by fuse F2 of the junction unitB1A.