Fiat PANDA 1.2 8v – PETROL ENGINE ELECTRONIC MANAGEMENT – – Right hand drive – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring Diagram - PETROL ENGINE ELECTRONIC MANAGEMENT - Fiat PANDA 1.2 8v

PETROL ENGINE ELECTRIC MANAGEMENT - WIRING DIAGRAM Fiat PANDA 1.2 8v

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COMPONENTS - PETROL ENGINE ELECTRONIC MANAGEMENT - Fiat PANDA 1.2 8v

Component code	Description	Reference to the assembly
A1	BATTERY (+)
A30	Ignition coil
B1	JUNCTION UNIT
C11	RIGHT FRONT EARTH	-
C30	LEFT REAR EARTH	-
C60	Injection ECU earth	-
D4	FRONT/ENGINE JUNCTION	-
D6	REAR / ENGINE COMPARTMENT JUNCTION	-
D97	Short circuit coupling	-
H1	Ignition switch
I31	CLUTCH PEDAL SWITCH	-
I50	INERTIAL SWITCH
K17	Lambda sensor on catalyzer
K18	Lambda sensor on catalyzer -2
K28	Engine oil pressure sensor
K36	Engine coolant temperature sensor/sender unit
K55	ACCELERATOR PEDAL POTENTIOMETER
K56	Throttle position sensor
K84	Speedometer sensor	-
M1	BODY COMPUTER
M10	ENGINE MANAGEMENT ECU
N40	FUEL PUMP AND SENDER UNIT
N70	Injector
N74	Idle actuator

PETROL ENGINE ELECTRONIC MANAGEMENT - COMPONENT LOCATION Fiat PANDA 1.2 8v

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COMPONENTS - PETROL ENGINE ELECTRONIC MANAGEMENT - Fiat PANDA 1.2 8v

Component code	Description	Reference to the assembly
A1	Battery
A30	Ignition coil
B1	JUNCTION UNIT
C11	RIGHT FRONT EARTH	-
C30	LEFT REAR EARTH	-
C60	Injection ECU earth	-
D4	Front/engine coupling	-
D6	Front/rear coupling	-
D97	Short circuit coupling	-
H1	Ignition switch
I31	Clutch pedal switch	-
I50	Inertia switch
K17	Lambda sensor on catalyzer
K18	Lambda sensor on catalyzer -2
K28	Engine oil pressure sensor
K36	Engine coolant temperature sensor/sender unit
K55	Accelerator pedal potentiometer
K56	Throttle position sensor
K84	Speedometer sensor	-
M1	BODY COMPUTER
M10	ENGINE MANAGEMENT ECU
N40	Fuel pump and level gauge
N70	Injector
N74	Idle actuator

Description - PETROL ENGINE ELECTRONIC MANAGEMENT - Fiat PANDA 1.2 8v

An electronic control system supervises and governs all engine parameters to optimise performance and fuel consumption by means of a real-time response to different service conditions.The system is managed by a single control unit that controls the twin ignition (static with lost spark) and the injection (phased).The "Drive by Wire" system eliminates the mechanical connection between the accelerator pedal and the throttle casing, allowing the torque supply to be improved according to the differing driver requirements translating them into benefits for the customer in terms of driveability and consumption.The brilliant performance of these power units is improved by a specially developed electronic control system based on a miniature Magneti Marelli electronic control unit produced using micro-hybrid technology capable of conversing with the vehicle''s electronic devices via serial lines.Depending on the signals received from numerous sensors, the control unit controls the injectors connected to it managing the following systems:fuel supply;air supply;engine cooling;exhaust with catalytic converter controlled by two lambda sensors;fuel vapour recirculation.The electronic management system described above ensures that this engine meets the very latest EOBD (European On Board Diagnogis) system emission control and monitoring requirements. This system allows continous diagnosis of emission-related car components and notifies the driver if any of the components should deteriorate by turning on a warning light and showing a message on the instrument panel matrix display.The system is also controlled by dedicated relays in the engine compartment junction unit. Lines supplying the control unit and various system components (sensors and actuators) are protected by dedicated fuses that are also located inside the junction unit.

Operational Description - PETROL ENGINE ELECTRONIC MANAGEMENT - Fiat PANDA 1.2 8v

The engine management control unit M010 is connected directly to the battery earth A001 connector D from connector A pin 5, 6, 21, 22.The direct battery power supply is provided at pin 16 connector B, from the line protected by fuse F 18, housed in the engine compartment junction unit B001.The ignition-operated supply is supplied:to the engine management control unit M010, at pins 29 and 12 of connector B;to the coil, incoming, for the relay housed inside the engine compartment junction unit B001;The engine management control unit provides a negative signal, at pin 62 connector B, to the relay T09 coil output.When energized, the relay provides a direct battery power supply:to the Lambda sensors K017 and K018 (at pins 4 respectively);to the fuel vapour recovery solenoid valve L010 (pin 2).to the ignition coils A030, connector A and B (at pins 1 respectively);to the injectors N070, connector A, B, C, D (at pins1 respectively);to the fuel pump N040;From connector A, the control unit M010:is connected to coolant temperature sensor K036 at pins 36 and 45;from pins 13 and 7 provides the power supply and the reference earth respectively to the integrated air temperature sensor K043 and the timing sensor K047;at pins 31 and 63 it receives the absolute air temperature and pressure signals respectively supplied by sensor K043;at pin 24 it receives the engine timing sensor signal K047;at pin 51 it controls the fuel vapour recovery solenoid valve L010;at pins 17 and 19 it controls the coils A030;at pins 50, 34, 49, 33 it controls the injectors N070;from pins 23 and 9 it provides the power supply and reference earth respectively for the engine rpm sensor K046;from pins 41 and 48 it provides the power supply and reference earth respectively for the detonation sensor K046;from pins 57, 52 it provides the power supply and reference earth for the throttle casing solenoid valve electric motor L062;at pin 30, 44 it receives signals coming from the throttle casing solenoid valve L062;from pins 15, 44 it provides the power supply and earth for the internal device for the throttle casing solenoid valve L062 for calculating the angular position of the actual throttle casing.at pins 32, 60, 43 it is connected to the Lambda sensor K017;at pins 64, 58, 42 it is connected to the Lambda sensor K018.From connector B, the control unit M010:from pins 2, 3 provides the power supply for the accelerator pedal potentiometer K055;from pins 15, 46 provides a negative signal for the accelerator pedal potentiometer K055;at pins 40, 42 receives the signals from the accelerator pedal potentiometer K055;at pin 7 it receives the engine oil pressure sensor signal K028;at pin 50 it receives the signal from the clutch pedal switch I031;-at pin 58 it controls the switching on of the "engine system failure" warning light housed in the instrument panel E050 (for more details [EL4010]);at pin 10 it is connected to the diagnostic socket [EL8010].From connector C, the control unit M010 is connected to earth C060.With the engine started, the various sensors used in the supply system receive a direct power supply from the engine management control unit, exchanging all information relating to their function with it.From pin 36, 52, connector B, the engine management control unit M010 is connected to the body computer node M001 via the C-CAN. The engine management control unit sends/receives the signals supplied by the various sensors used in the system via this line.For more information