Fiat GRANDE PUNTO 1.4 16v – PETROL ENGINES ELECTRONIC MANAGEMENT – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat GRANDE PUNTO 1.4 16v

PETROL ENGINE ELECTRONIC MANAGEMENT - WIRING DIAGRAM Fiat GRANDE PUNTO 1.4 16v

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COMPONENTS - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat GRANDE PUNTO 1.4 16v

Component code	Description	Reference to the operation
A030	IGNITION COIL
B001	JUNCTION UNIT
B099	MAXI FUSE BOX ON BATTERY
C010	LEFT FRONT EARTH	-
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
C040	ENGINE EARTH	-
D020	DASHBOARD/REAR COUPLING	-
D029	ENGINE CABLES/ENGINE SERVICES CABLE COUPLING	-
D81	INJECTOR JUNCTION	-
D107	DASHBOARD-REAR/ENGINE SERVICES COUPLING	-
E050	INSTRUMENT PANEL
I020	REVERSING LIGHTS SWITCH
I030	BRAKE PEDAL SWITCH
I031	CLUTCH PEDAL SWITCH
I050	INERTIA SWITCH
K015	LAMBDA SENSOR ON PRE-CATALYZER
K017	LAMBDA SENSOR ON CATALYZER
K030	LOW ENGINE OIL PRESSURE SENSOR (SWITCH)
K036	ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT
K043	INTEGRATED AIR TEMPERATURE SENSOR
K047	TIMING SENSOR
K048	ABSOLUTE PRESSURE SENSOR
K050	DETONATION SENSOR
K055	ACCELERATOR PEDAL POTENTIOMETER
K204	PDA POSITION SENSOR
L010	FUEL VAPOUR RECOVERY SOLENOID VALVE
L031	PDA SOLENOID VALVE
M001	BODY COMPUTER
M010	ENGINE MANAGEMENT ECU
N040	FUEL PUMP AND LEVEL GAUGE
N070	INJECTOR
N075	THROTTLE BODY ACTUATOR

COMPONENT LOCATION - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat GRANDE PUNTO 1.4 16v

PETROL ENGINE ELECTRONIC MANAGEMENT - COMPONENT LOCATION Fiat GRANDE PUNTO 1.4 16v

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Component code	Description	Reference to the operation
A030	IGNITION COIL
B001	JUNCTION UNIT
B099	MAXI FUSE BOX ON BATTERY
C010	LEFT FRONT EARTH	-
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
C040	ENGINE EARTH	-
D020	DASHBOARD/REAR COUPLING	-
D029	ENGINE CABLES/ENGINE SERVICES CABLE COUPLING	-
D81	INJECTOR JUNCTION	-
D107	DASHBOARD-REAR/ENGINE SERVICES COUPLING	-
E050	INSTRUMENT PANEL
I020	REVERSING LIGHTS SWITCH
I030	BRAKE PEDAL SWITCH
I031	CLUTCH PEDAL SWITCH
I050	INERTIA SWITCH
K015	LAMBDA SENSOR ON PRE-CATALYZER
K017	LAMBDA SENSOR ON CATALYZER
K030	LOW ENGINE OIL PRESSURE SENSOR (SWITCH)
K036	ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT
K043	INTEGRATED AIR TEMPERATURE SENSOR
K047	TIMING SENSOR
K048	ABSOLUTE PRESSURE SENSOR
K050	DETONATION SENSOR
K055	ACCELERATOR PEDAL POTENTIOMETER
K204	PDA POSITION SENSOR
L010	FUEL VAPOUR RECOVERY SOLENOID VALVE
L031	PDA SOLENOID VALVE
M001	BODY COMPUTER
M010	ENGINE MANAGEMENT ECU
N040	FUEL PUMP AND LEVEL GAUGE
N070	INJECTOR
N075	THROTTLE BODY ACTUATOR

DESCRIPTION - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat GRANDE PUNTO 1.4 16v

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 which controls both ignition and injection.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;accelerator pedal;engine cooling;combustion control - Lambda sensors;control of exhaust with catalytic silencerfuel vapour recirculation.The throttle body is also controlled electronically by the control unit: throttle opening is calculated in accordance with specific software mapped inside the engine control unit. This system does away with the need for a mechanical link between accelerator pedal and throttle body.This engine features the innovative intake control system known as "PDA":To allow fast and regular combustion of the charge, the turbulence level must be significantly increased. This function is carried out by a system that manages the air drawn in from the intake manifolds known as "PDA". In particular, the system shutters the intake manifolds which are also a special asymmetrical design.When necessary, a slider valve closes one of the two ducts: in these conditions the intensity of the swirl is high, in other conditions, e.g. in full load conditions, both ducts are open and the flow efficiency is higher.The adjustment is carried out by means of a valve known as "PDA", operated by a digital, duty cycle type signal coming from the engine management control unit.A slider position sensor completes the information sent to the engine management control unit for the management of the duct shuttering.Thanks to the electronic management described above and the innovative "PDA" system, this engine conforms to the most recent pollution control standards (EURO 4).For more detailsThe system is also controlled by dedicated relays in the engine compartment control unit. Lines supplying the control unit and various system components (sensors and actuators) are protected by dedicated fuses that are also located inside the engine compartment.

FUNCTIONAL DESCRIPTION - PETROL ENGINES ELECTRONIC MANAGEMENT - Fiat GRANDE PUNTO 1.4 16v

Engine management control unit M10 controls and governs the entire electronic ignition and injection system.Control unit M10 is supplied directly from the battery at pin 18 of connector A, via a line protected by fuse F43 of junction unit B1 .The ignition-operated power supply arrives via a line protected by fuse F20 of the engine compartment junction unit B1 at pin 51 of connector A of M10 .Main injection relay T7 of B1 controls the entire system: it is energized by an earth signal from pin 19 of connector A of engine control unit M10 and then forwards a power supply:- to pins 49 and 33 of connector A of the actual control unit, via the line protected by fuse F29 of B1;- to fuel vapour recovery solenoid L10 and to lambda sensors K15 and K17 (all these lines are protected by fuses F27 of B1;- to the phase transformer N76 via the line protected by fuse F29 of B1;- to coils A30 and injectors N70 via a line protected by fuse F28 of B1.Fuel pump relay T8 of B1 is supplied by the line protected by fuse F30 of B1.It is energized by a control signal coming from pin 36 of connector A of control unit M10 and provides the power supply for the electric fuel pump N40 which is earthed via the inertia switch I50 which interrupts the circuit in the case of an impact and stops the dangerous supply of fuel.Relay T19 of B1 controls the PDA system; it receives a power supply from the line for fuse F36 of B1.This is energized by a control signal from pin 34 of connector B of control unit M10 and supplies power to the PDA solenoid valve L31.The engine management control unit M10 receives signals from the various sensors thereby keeping all the engine operating parameters under control.The rpm sensor K46 provides information, via a frequency signal sent to pins 43 and 27 of connector B of the control unit M10, about the engine speed.Timing sensor K47 is supplied from pin 3 of connector B di M10 ; this receives a reference earth from pin 21 of connector B, and sends a signal with frequency corresponding to the phase to pin 4 of connector B of the control unit.Integrated air temperature sensor K43 receives a reference earth from pin 26 of connector B; it sends a signal corresponding to intake air temperature to pin 55 of the control unit. Pin 24 of connector B of M10 sends a reference power supply to sensor K43 , which returns a signal proportional to intake air pressure to pin 22.The engine temperature sender unit K36 receives a reference earth from pin 42 of connector B of the control unit M10 and provides a signal proportional to the temperature of the engine coolant at pin 38 of connector B of the control unit.The Lambda sensor on the pre-catalyzer K15 and the one on the catalyzer K17 provide the control unit M10 with information concerning the correct composition of the air-fuel mixture.The sensor K15 sends a signal to pin 8 of connector B of the control unit, while pin 25 provides a reference earth: these two signals are very low intensity and are thus appropriately shielded. Sensor K15 is heated by a resistance to ensure correct operation even when cold; the resistance is supplied by the main relay T7 pin 49 of connector B of M10 provides the reference earth.The sensor K17 sends a signal to pin 57 of connector B of the control unit, while pin 41 provides a reference earth: these two signals are very low intensity and are thus appropriately shielded. Sensor K17 is heated by a resistance to ensure correct operation even when cold; the resistance is supplied by the main relay T7; pin 35 of connector B of M10 provides the reference earth.The detonation sensor K50 provides information, by means of frequency signals, concerning the onset of detonation in the combustion chamber: it sends two signals to pins 20 and 52 of connector B of M10 ; these signals are also appropriately shielded.Absolute pressure sensor K48 receives a reference earth from pin 7 of connector B; while pin 60 of connector B of M10 sends out a reference power supply: sensor K48 returns a signal proportional to the pressure to pin 9.The accelerator pedal K55 has two built in potentiometers (one main one and one safety one). The former receives power and earth signals from pins 21 and 54 of connector A of M10 and sends a corresponding signal to pin 22 of the same connector. The latter receives power and earth signals from pins 4 and 5 of connector A of M10 and sends a corresponding signal to pin 37 of the same connector.The PDA position sensor K204 detects the position of the slider which regulates the intake manifolds; it receives a reference earth from pin 10 of connector B of M10 and sends a signal to pin 44 of connector B.Control unit M10 receives the mininum engine oil pressure sensor K30 signal at pin 5 of connector B.Pin 25 of connector A of M10 receives a signal from brake light switch I30 - N.O. contact - provided with an ignition-controlled power supply from fuse F22 of Body Computer M1. It receives via the CAN a signal - N.C. contact - from brake light switch I30 supplied with an ignition controlled supply from fuse F26 of Body Computer M1.Pin 8 of connector A of M10 receives the signal coming from the clutch switch I31.Pin 9 of connector A of M10 receives the signal coming from the clutch switch I20.The control unit M10 controls the opening of the injectors N70 by means of special signals sent by pins 518, 17, 2 and 19 of connector B of M10. Injectors N70 receive a power supply to enable opening of main relay T7 of B1 .Control unit M10 also controls the coils A30 via control signals for the primary winding of the coil, while the secondary winding sends a pulse to the spark plugs: from pins 48, 63, 64 and 47 of connector B of M10. The primary windings of coils A30 receive a power supply to enable opening of main relay T7 of B1 .The throttle body actuator N75 has two built in potentiometers connected in parallel: this controls the throttle opening by means of a stepping motor.The motor receives a power supply from pins 14 and 30 of connector B of M10. Pin 15 of connector B sends power to both potentiometers, while pin 58 sends an earth signal to the potentiometers; pins 23 and 39 of the same connector receive signals that reach throttle body actuator N75.The fuel vapour recovery solenoid valve L10 allows the flow of fuel vapours to the engine intake where they are added to the mixture entering the combustion chamber. Valve L10 is supplied from main relay T7 of B1 ; it is opened by the control unit when the engine is loaded via a signal from pin 33 of connector B of M10 .Variable valve timing solenoid N76 is supplied from main relay T7 of B1 ; it is controlled by the control unit via a signal from pin 30 of connector B of M10 .The control unit M10 is then connected via the CAN to the Body Computer M1 and to the other network nodes: information on the following is sent through this connection- system self-diagnosis, which may be used by connecting to connector R10;- engine coolant temperature, which is sent to the instrument panel E50 which manages the gauge and the warning light;- engine rpm, which is sent to the instrument panel E50 rev counter;- minimum engine oil pressure, which is sent to the instrument panel E50 which manages the warning light;It receives the speedometer signal, via the CAN, produced by the ABS control unit M50.The autodiagnostic system for the control unit M10 also produces a signal - which leaves pin 35 of connector A - which is connected directly to the EOBD warning light in the instrument panel E50.