AUTOMOTIVE ELECTRICIANS

Fiat STILO 1.8 16v da 07/03 a 12/03 — PETROL ENGINES ELECTRONIC MANAGEMENT — — WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION — WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION


Wiring diagram - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat STILO 1.8 16v da 07/03 a 12/03









Components - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat STILO 1.8 16v da 07/03 a 12/03



Component codeNameAssembly reference
A30 Ignition coil
B2 Junction unit under dashboard
C10 Front left earth-
C15 Facia earth, driver''s side-
C20 Passenger side dashboard earth-
C40 Earth on engine-
C60 Injection ECU earth-
D1 Front / dashboard coupling-
D1 Front/dashboard coupling-
D4 Front/engine connection-
D4 Front/engine coupling-
D24 Engine coupling/ i.e.-
D81 Injector junction-
D97 Short circuiting coupling-
E50 Instrument panel
I30 Brake pedal switch-
I31 Clutch pedal switch-
I50 Inertia switch
K15 Lambda sensor on pre-catalyzer
K17 Lambda sensor downstream of post-catalyzer
K36 Engine temperature sender unit
K43 Integrated air temperature sensor
K46 Rpm sensor
K47 Timing sensor.
L10 Fuel vapour recovery solenoid
M1 Body computer
M10 Engine management control unit-
M10 Engine management control unit
N40 Fuel pump and sender unit
N70 Injector
N75 Integrated throttle body actuator

Location of components - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat STILO 1.8 16v da 07/03 a 12/03





Components - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat STILO 1.8 16v da 07/03 a 12/03



Component codeNameAssembly reference
A30 Ignition coil
B2 Junction unit under dashboard
C10 Front left earth-
C15 Facia earth, driver''s side-
C20 Passenger side dashboard earth-
C40 Earth on engine-
C60 Injection ECU earth-
D1 Front / dashboard coupling-
D1 Front/dashboard coupling-
D4 Front/engine connection-
D4 Front/engine coupling-
D24 Engine coupling/ i.e.-
D81 Injector junction-
D97 Short circuiting coupling-
E50 Instrument panel
I30 Brake pedal switch-
I31 Clutch pedal switch-
I50 Inertia switch
K15 Lambda sensor on pre-catalyzer
K17 Lambda sensor downstream of post-catalyzer
K36 Engine temperature sender unit
K43 Integrated air temperature sensor
K46 Rpm sensor
K47 Timing sensor.
L10 Fuel vapour recovery solenoid
M1 Body computer
M10 Engine management control unit-
M10 Engine management control unit
N40 Fuel pump and sender unit
N70 Injector
N75 Integrated throttle body actuator

Description - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat STILO 1.8 16v da 07/03 a 12/03


An electronic management system supervises and governs all engine parameters. It optimises performance and fuel consumption by responding in real time to different service conditions.The system is managed by a single control unit which controls both the ignition and the injection.The system uses signals received from numerous sensors to control actuators. It is connected to the following systems:fuel supply;air supply:accelerator pedal;engine cooling system;control of combustion - Lambda sensors;control of exhaust with catalytic silencer;fuel vapour recirculation.The throttle body is also controlled electronically by the control unit; special software in the engine management control unit computes throttle opening; this dispenses with the need for a mechanical connection between the accelerator pedal and the throttle body.This version is also characterized by the adoption of a variable geometry inlet system, managed by the fuel injection control unit in accordance with the engine''s operating conditions.The control unit also controls the electrohydraulic timing variator.Thanks to the electronic management described above, this engine conforms to the latest anti-pollution and continuous control regulations in accordance with the EOBD (European On Board Diagnosis) system; this system allows continuous diagnosis of the car components relating to emissions, and indicates to the user, by switching on the relevant warning light on the instrument panel, any deterioration in these components.For greater detail, see.The system is also controlled by means of special relays located in the engine compartment unit; The supply lines to the control unit and the various system components (sensors and actuators) are protected by special fuses, in the engine compartment unit.

Functional description - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat STILO 1.8 16v da 07/03 a 12/03


The engine control unit M10 monitors and controls the entire electronic ignition and injection system.The control unit M10 is supplied directly by the battery at pin 4 of connector A, via a line protected by fuse F18 of the unit B1 .The supply controlled by the ignition (15/54) reaches pin 24 of connector A of M10 from the line protected by fuse F16 of the engine compartment unit B1 .The main injection relay T9 of B1 controls the entire system: this is excited by a control signal (earth) received from pin 11 of connector A of control unit M10 and then sends power:to the injectors N70 and the coils A30 , via the line protected by fuse F22 of B1 .the fuel vapour recovery solenoid L10 , variable geometry control solenoid L15 , variable valve timing actuator N76 and Lambda sensors K15 and K17 via a line protected by fuse F11 of B1 ;to pins 1, 2 and 3 of control unit M10 , and sensors K41 and K47 via the line protected by fuse F17 of B1 ;The fuel pump relay T10 of B1 is supplied by the line of the fuse F21 of B1 .It is energized by a control signal (earth) from pin 7 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.

Ignition coil



A30A



A30A



A30A



A30A



A30B



A30B



A30B



A30B



A30C



A30C



A30C



A30C



A30D



A30D



A30D



A30D



A30E



Junction unit under dashboard



B2A



B2A



B2A



B2A



B2B



B2C



B2D



B2D



B2D



B2D



B2E



B2G



B2H



Facia earth, driver's side



C15A



C15B



C15C



C15C



Passenger side dashboard earth



C20



C20



C20



Earth on engine



C40



C40



C40A



C40A



C40B



Front / dashboard coupling



D1



D1



D1



D1



D1



Front/engine connection



D4



D4



D4A



D4A



D4A



D4A



D4A



D4A



D4A



D4A



D4A



D4A



D4B



D4B



D4B



D4B



D4B



D4B



D4B



D4B



D4B



D4B



Engine coupling/ i.e.



D24



D24



D24



D24



Injector junction



D81



D81



D81



D81



Short circuiting coupling



D97A



D97B



D97B



D97B



D97B



D97C



D97C



D97C



D97C



D97D



D97D



D97D



D97D



D97D



D97D



D97E



D97F



D97F



D97G



D97H



D97H



D97I



D97I



D97J



D97K



D97K



D97L



D97L



D97M



D97N



D97P



D97Q



D97R



Instrument panel



E50A



E50B



E50C



Inertia switch



I50



I50



Lambda sensor on pre-catalyzer



K15



K15



K15



K15



Lambda sensor downstream of post-catalyzer



K17



K17



K17



K17



Engine temperature sender unit



K36



K36



K36



K36



K36



K36



Integrated air temperature sensor



K43



K43



RPM sensor



K46



K46



K46



K46



K46



K46



Timing sensor



K47



K47



K47



K47



K47



K47



Fuel vapour recovery solenoid



L10



L10



L10



L10



Body computer



M1A



M1A



M1A



M1A



M1A



M1A



M1B



M1B



M1B



M1B



M1C



M1D



M1D



M1D



M1D



M1E



M1E



M1E



M1E



M1F



M1G



M1H



M1I



Engine management ECU



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10B



M10B



M10B



M10B



M10B



M10B



Fuel level gauge



N40



N40



N40



N40



N40



Injector



N70A



N70A



N70A



N70A



N70A



N70A



N70B



N70B



N70B



N70B



N70B



N70B



N70C



N70C



N70C



N70C



N70C



N70C



N70D



N70D



N70D



N70D



N70D



N70D



N70E



Integrated throttle body actuator



N75



N75



N75



N75


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