An ignition operated power supply (INT) from instrument E50 reaches pin 1 of connector A through body computer M01, pin 31 connector F, from a line protected by fuse F37 of under-dashboard junction unit B02.Instrument E50 is also supplied directly from the battery - pin 3 of connector A - via the body computer, pin 3 of connector D, from a line protected by fuse F53 contained in under-dashboard junction unit B02.The power supply to body computer M01 reaches pin 9 connector XY through under-dashboard junction unit B02 (pin 11 connector E) from ignition switch H01 (INT) and pin 18 of connector XY of body computer M01 through under-dashboard junction unit, directly from a battery protected by fuse F1 located inside engine compartment junction unit B01.Pins 8 and 9 of connector D of the body computer are earthed.Body computer M01 and control panel E50 communicate with one another to exchange information on the correct operation of the devices present in the vehicle respectively from pins 5 and 6 of connector D and pins 9 and 8 of connector A.Instrument panel E50 is also connected to earth via body computer M01 from pin 2 of connector A.Signals from handbrake switch I40 and brake fluid level sensor K25 are received from pin 14 connector A and pin 18 connector C of M01 respectively.Pins 4 and 15 of connector A of the body computer receives signals from the fuel level gauge located in the unit of pump N40: these signals, sent via the CAN network to the instrument panel, are processed by an internal electronic devices that manages the level gauge and reserve warning light in the instrument.Speedometer sensor K84 sends its signal directly to body computer M01 at pin 17 connector C. The signals are sent via the CAN line to instrument panel E50, to manage all information on vehicle speed, and to engine management control unit M10 to ensure its correct operation.Engine management control unti M10, pin 56 connector B receives a minimum engine oil pressure signal from sensor K30. This signal reaches instrument panel E50 via the CAN to make it possible to activate the warning light.Fuel temperature sensor and water in fuel filter sensor K101 is connected to pin 74 connector A of engine control unit M10 to detect the presence of water in the diesel filter. Via the CAN network the control unit controls instrument panel E50 to turn on the water in fuel filter warning light.In the same way, information on engine coolant temperature leaves sensor K36 and reaches engine control unit M10 at pins 58 and 41 of connector B. From there, it is then sent to instrument panel E50 to manage the gauge signal and also the excessive coolant temperature warn light, if necessary.RPM sensor K46 sends an engine rpm signal to engine control unit M10 at pins 27 and 12 connector B; the control unit informs instrument panel E50 via the CAN network, which makes it possible to display the engine rpm.The information travels through the C-CAN line from pins 83 and 84 of connector B of M10 to pins 32 and 33 connector C of M01.A headlamp alignment corrector control signal leaves pin 6 connector A of instrument panel E50. See E3080 HEADLAMP AGLINMENT CORRECTORSignals are received from the AIR BAG control unit at pins 13, 14 and 15 of connector B for correct management of the various warning lights. See E7030 AIRBAGPin 4 of connector A receives a zero reset/scroll signal for trip computer variables. See E4080 TRIP COMPUTER