MAIN BEAMS OPERATIONAL DESCRIPTION

Operational Description

The command to switch on the main beam headlamps is supplied by the steering wheel node control unit M093 to the body computer node M001. The signal travels via the CAN which connects the two control units.

The steering wheel node control unit M093 receives a supply (pin 5 connector A) through the line protected by fuse F11, located in the body computer node M001; it receives a supply via the CAN (pin 6 connector A) from the line protected by fuse F16, located in the body computer node M001.

The body computer node M001, in turn, informs the engine compartment junction unit B001, via the CAN, of the request to switch on the main beam headlamps.

The relay inside the engine compartment junction unit B001 is energized, supplying the front light clusters F010 and F011; the line is protected by fuses F11 and F12 both housed in the junction unit.

The warning light is switched on by the milometer warning lights node M140 which communicates with the instrument panel E050 and the body computer node M001 via the CAN.

The instrument panel E050 and the milometer warning lights node M140 receive a supply via the CAN (pin 13 of E50 and pin 4 of M140) through the line protected by fuse F24 of the body computer M001.