3239459 - E5030 PETROL ENGINE ELECTRONIC MANAGEMENT - Functional description

Functional description

The engine control unit M10 monitors and controls the entire electronic ignition and injection system. The system is supplied directly by the battery via a line protected by the maxifuse EFI located on the battery, connector B99 C . The supply controlled by the ignition (15/54) arrives from the line protected by fuse F4 of the additional fuse box B98 A . The control unit M10 is supplied directly by the battery at pin 15 of connector A, via a line protected by fuse F5 of the additional fuse box B98 A . The supply controlled by the ignition reaches pin 47 of connector A, via a line protected by fuse F4 of the additional fuse box B98 A . Main injection relay J10 controls the entire system: this is excited by a control signal (earth) from pin 31 of connector A of control unit M10 and then sends a power supply to pins 16, 32 and 48 of connector A of the control unit via a line protected by fuse F3 of supplementary fuse box B98 A. to air flow meter K41, fuel vapour recovery solenoid L10 and Lambda sensors K15, K16, K17 and K18; (all these lines are protected by fuse F2 of B98 A ). to the injectors N70 and the coils A30 , via the line protected by fuse F3 , located in the unit B98 A . the fuel pump relay J15 receives a supply controlled by the ignition via fuse F4 , of the additional fuse box B98 A . It is energized by a control signal (earth) from pin 30 of connector A of control unit M10 and supplies power to fuel pump N40 , which is earthed through the inertia switch I50 , which cuts off the circuit in the case of a crash and so prevents the dangerous spilling of fuel. On the control unit, the earth point C40 B is located, which is connected to the engine earth C40 . The engine control unit M10 receives signals from the various sensors in order to monitor all engine service conditions. Rpm sensor K46 provides information on engine speed via a frequency signal sent to pins 10 and 59 of connector B of control unit M10

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