939011490 - E2012 MAIN BEAM HEADLIGHTS - FUNCTIONAL DESCRIPTION (Xenon Gas headlamps)

FUNCTIONAL DESCRIPTION

The dipped headlamps (earth) activation signal (stable mode) is sent to pin 4 of connector I of the Body Computer M1 from the steering column switch unit H5; the flasher activation (earth) signal (unstable mode) is, on the other hand, sent to pin 33 of connector G of the Body Computer M1.The Body Computer M1 controls the supply for the dipped headlamps sending an earth signal to relay T2 in the junction unit in the engine compartment B1 from pin 9 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.Both electronic systems inside the headlamps F10 (left) and F11 (right) are supplied - pin 9 - from the INT line of junction unit B2 protected by fuse F37.Pins 12 of the two control units are connected to one another by means of a special serial line, whilst the speedometer signal from the Body Computer M1 (pin 28 of connector B) reaches pin 10 of the junction unit located in headlamp F10.Pins 11 of the two headlamps are connected to the diagnostic K line    See E8010 DIAGNOSTIC MULTIPLE CONNECTOR The Body Computer M1 is connected via the CAN line to the instrument panel E50 to manage the "main beam headlamps" warning light.