3239453 - E5030 PETROL ENGINE ELECTRONIC MANAGEMENT - Functional description (Mechanical gearbox)
Functional description
The engine control unit M10 monitors and controls the entire electronic ignition and injection system. The direct supply for the system arrives from the battery from the line for the maxifuse EFI of B5 up to 2/99 or from B99 from 2/99. The control unit M10 is supplied directly by the battery at pin 18 of connector A, via the line protected by fuse B35 up to 2/99 or from fuse F5 of the additional fuse box B98A from 2/99. The supply controlled by the ignition (15/54) reaches pin 8 of connector A, via the line protected by fuse B25 up to 2/99 or fuse F4 of the additional fuse box B98A from 2/99.Main injection relay J10 controls the entire system: this is excited by a control signal (earth) received from pin 31 of connector A of control unit M10 and then sends power:
- to pins 7 and 17 of connector A of the control unit, via the line protected by the fuse B41 up to 2/99 or fuse F3 of the additional fuse box B98A from 2/99;
- to injectors N70 , to air flow meter K41 , to fuel vapour recovery solenoid L10 , to variable geometry control solenoid L15 , to variable valve timing actuator N76 and Lambda probe K40 ; (all these lines are protected by fuse B40 up to 2/99 or fuse F2 of the additional fuse box B98A from 2/99).
Functional description
Engine temperature sender unit K36 receives a reference earth from pin 1 of connector B of control unit M10 and supplies a signal proportional to the coolant temperature to pin 5 of control unit connector B. The same sender unit also supplies information to the temperature gauge and warning light ( See E4023 DASHBOARD CENTRE AUXILIARY EQUIPMENT() ).Functional description
Hot Lambda probe K40 provides control unit M10 with information on the correct composition of the air-fuel mixture. The signal is sent to pin 30 of connector B of M10 , while pin 21 provides a reference earth signal. Probe K40 is heated by a resistor in order to ensure it works efficiently even when cold. The resistor is supplied by relay J10 and receives an earth signal from pin 8 of connector B of control unit M10 . Knock sensor K50 provides information on knock status via a frequency signal sent to pin 2 of connector B of control unit M10 . It receives a reference earth from pin 11 of connector B. The signals are very low intensity and are therefore shielded. Air flow meter K41 (supplied from relay J10 ) receives a reference voltage from pin 1 of connector A and sends pin 20 of connector A a signal proportional to air flow. K41 also contains an air temperature sensor: the sensor reference earth is supplied by pin 29 of connector A of M10 , while an air temperature signal is received by pin 30 of connector A. Control unit M10 controls the opening of individual injectors N70 ,via duty cycle signals produced by pins 6 (cyl. 1), 17 (cyl. 2), 16 (cyl. 3) and 7 (cyl. 4) of connector B of M10 . Injectors N70 receive a power supply to enable opening from main relay J10 . Control unit M10 also controls coils A30 via control signals (earth) for the coil primary windings, while the secondary winding sends a pulse to the spark plugs: from pins 38 and 10 of connector B for cylinder pair 1-4 and from pins 9 and 37 of connector B of M10 for cylinders 2-3. The primary windings for coils A30 receive the supply for enabling the opening from the main relay J10 . The idle actuator N74 regulates the idle air flow via the butterfly. It receives a supply and reference earth from pins 1 and 29 of connector B of control unit M10 : pins 4 and 13 of connector B are connected to the potentiometer which detects the position of the butterfly; pins 26 and 35 of connector B control the butterfly actuator. Fuel vapour recovery solenoid L10 allows fuel vapours to pass through to the engine intake where they join the mixture entering the combustion chamber. The valve L10 , supplied by the main relay J10 , is opened by the control unit when the engine is under load via a duty-cycle signal from pin 34 of connector B of M10 .| ... DATA ERROR - CROPPED TEXT | Ошибка данных - Текст обрезан ... |
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