2401123 - E2012 MAIN BEAM HEADLAMPS - Functional description

Functional description

The dipped headlamps activation (earth) signal (stable mode) is sent to pin 4 of connector I of the Body Computer M1 from the steering column switch unit H5; the headlamp flasher activation (earth) signal (unstable mode) is sent to pin 33 of connector G of the Body Computer M1. The Body Computer M1 controls the supply to the main beam headlamps by sending an earth signal to the engine compartment control unit B1 - from pin 9 of connector A of M1 - which energizes the relay T2: this supplies the dipped headlamps F10 (left) and F11 (right). Each circuit is protected by a junction unit B1 fuse F15 for the left headlamp and F14 for the right one. The Body Computer M1 is connected, via the CAN line, to the instrument panel E50 to manage the main beam headlamps warning light.