125002349 - E4010 INSTRUMENT PANEL - FUNCTIONAL DESCRIPTION

Functional description

The ignition-operated power supply (INT) of the instrument panelE50reaches pin 1 of connector A through the line of fuse F37 of the unit under the dashboardB2; the direct supply reaches pin 2 of connector A through the line of fuse F53 of the unit under the dashboardB2; pin 7 of connector A is earthed (earth controlled by the Body ComputerM1).The instrument panelE50 is connected from pins 3 and 4 of connector A to the Body Computer M1 and via the latter to the whole CAN network: via CAN the signal for the electronic speedometer arrives (coming from the ABS control unit M50): this signal is replicated from pin 37 of M50 to pin 17 of connector A of the Body Computer M1.The electronic rev counter receives the rpm signal coming via CAN from the engine management control unitM10.The fuel gauge is controlled in accordance with the signals coming from the fuel gauge sender unit located in the fuel pump assemblyN40- at pins 4 and 15 of the Body ComputerM1, and from here via CAN to the instrument panelE50.The seat belt warning light is controlled by a signal sent to pin 15 of connector A ofE50from switchI45.The inertia switch warning light is controlled in accordance with the signal which reaches pin 12 of connector A ofE50from the relevant switchI50(N.O. contact: the N.C. contact is the one which interrupts the operation of the petrol pump.The brake pad wear warning light is controlled in accordance with the signal which reaches pin 23 of connector A of the Body ComputerM1from the relevant sensorK20.    See E5030 PETROL ENGINE ELECTRONIC MANAGEMENTThe low brake fluid/handbrake applied warning light comes on through a signal from the handbrake switchI40, which reaches pin 24 of connector E of the Body ComputerM1, or from the signal from the low brake fluid level sensorK25, which reaches pin 18 of connector A ofM1.All these signals are transferred via CAN to the instrument panelE50.