198000358 - E2012 MAIN BEAM HEADLIGHTS - FUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTION

The main beam headlamps activation signal is sent to pin 33 of connector G of the Body Computer M1 from the steering column switch unit H5Pin 5 of connector C of H5 receives a reference earth from pin 9 of connector I of M1.The Body Computer M1 receives a direct supply from the battery via the line protected by maxifuse B99 at pin 18 of connector F of the interface with the junction unit under the dashboard B2; the ignition-controlled supply (INT) reaches pin 9 of connector F of the interface with the junction unit B2.The Body Computer M1 controls the supply for the dipped headlamps sending an earth signal to the engine compartment junction unit B1 from pin 12 of connector A of M1 which energizes relay T2: this supplies the dipped headlamps F10 (left) and F11 (right). Each circuit is protected by a fuse in the junction unit B1 : F15 for the left headlamp and F14 for the right.The Body Computer M1 is connected via the CAN line to the instrument panel E50 to manage the "main beam headlamps" warning light.