Alfa Romeo GT 3.2 V6 – PETROL ENGINE ELECTRONIC MANAGEMENT – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

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Wiring diagram - PETROL ENGINE ELECTRONIC MANAGEMENT - Alfa Romeo GT 3.2 V6

PETROL ENGINE ELECTRONIC MANAGEMENT - WIRING DIAGRAM Alfa Romeo GT 3.2 V6

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Components - PETROL ENGINE ELECTRONIC MANAGEMENT - Alfa Romeo GT 3.2 V6

Component code	Description	Reference to the assembly
A30	IGNITION ''COIL
A30	IGNITION ''COIL
B1	JUNCTION UNIT	-
B1	JUNCTION UNIT
B1	JUNCTION UNIT
B002	Junction unit under dashboard
B5	MAXI FUSE-1 BOX	-
B99	MAXIFUSE BOX ON BATTERY
C1	BATTERY EARTH	-
C10	FRONT LEFT EARTH ( FRONT )	-
C15	FACIA EARTH, DRIVER''S SIDE	-
C38	EARTH ON TUNNEL	-
C40	ENGINE EARTH	-
D4	FRONT/ENGINE CONNECTION ( CONNECTORS )	-
D7	RECHARGING FRONT CONNECTION ( CONNECTORS )	-
D49	PEDAL ASSEMBLY JOIN	-
D97	SHORT CIRCUITING COUPLING	-
E50	INSTRUMENT PANEL
H1	IGNITION SWITCH
I30	BRAKE PEDAL SWITCH ( FRONT )
I31	CLUTCH PEDAL SWITCH ( FRONT )	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
I50	INERTIAL SWITCH
K105	BRAKE SERVO VACUUM UNIT SENSOR	-
K105	BRAKE SERVO VACUUM UNIT SENSOR
K15	LAMBDA SENSOR ON PRE-CATALYZER
K16	LAMBDA SENSOR ON PRE-CATALYZER -2 ( CONNECTORS )
K17	LAMBDA SENSOR ON CATALYZER ( CONNECTORS )
K18	LAMBDA SENSOR ON CATALYZER 2 ( CONNECTORS )
K30	ENGINE OIL PRESSURE SENSOR SWITCH ( CONNECTORS )
K36	ENGINE TEMPERATURE SENDER UNIT ( CONNECTORS )	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
K36	ENGINE TEMPERATURE SENDER UNIT ( CONNECTORS )	1056F
K41	AIR FLOW METER ( FRONT )	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
K46	RPM SENSOR ( CONNECTORS )
K47	TIMING SENSOR. ( CONNECTORS )	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
K47	TIMING SENSOR. ( CONNECTORS )	1056F
K50	DETONATION SENSOR 1 ( CONNECTORS )
K50	DETONATION SENSOR 1 ( CONNECTORS )
K51	KNOCK SENSOR -2
K55	ACCELERATOR PEDAL POTENTIOMETER ( FRONT )
K83	FUEL PRESSURE SENSOR	1056F
L10	FUEL VAPOUR RECOVERY SOLENOID
L10	FUEL VAPOUR RECOVERY SOLENOID
L15	Variable geometry solenoid valve	1072D
L20	AIR CONDITIONING COMPRESSOR ENGAGEMENT ELECTRO-MAGNET ( CONNECTORS )
M1	BODY COMPUTER
M10	ENGINE MANAGEMENT ECU	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
N40	FUEL PUMP AND SENDER UNIT
N70	INJECTOR	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
N75	THROTTLE BODY ACTUATOR ( CONNECTORS )	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
N76	TIMING VARIATOR ACTUATOR	1056F
N77	Fuel pressure regulator	1056F

Component location - PETROL ENGINE ELECTRONIC MANAGEMENT - Alfa Romeo GT 3.2 V6

PETROL ENGINE ELECTRONIC MANAGEMENT - COMPONENT LOCATION Alfa Romeo GT 3.2 V6

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Components - PETROL ENGINE ELECTRONIC MANAGEMENT - Alfa Romeo GT 3.2 V6

Component code	Description	Reference to the assembly
A30	IGNITION ''COIL
A30	IGNITION ''COIL
B1	JUNCTION UNIT	-
B1	JUNCTION UNIT
B1	JUNCTION UNIT
B002	Junction unit under dashboard
B5	MAXI FUSE-1 BOX	-
B99	MAXIFUSE BOX ON BATTERY
C1	BATTERY EARTH	-
C10	FRONT LEFT EARTH ( FRONT )	-
C15	FACIA EARTH, DRIVER''S SIDE	-
C38	EARTH ON TUNNEL	-
C40	ENGINE EARTH	-
D4	FRONT/ENGINE CONNECTION ( CONNECTORS )	-
D7	RECHARGING FRONT CONNECTION ( CONNECTORS )	-
D49	PEDAL ASSEMBLY JOIN	-
D97	SHORT CIRCUITING COUPLING	-
E50	INSTRUMENT PANEL
H1	IGNITION SWITCH
I30	BRAKE PEDAL SWITCH ( FRONT )
I31	CLUTCH PEDAL SWITCH ( FRONT )	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
I50	INERTIAL SWITCH
K105	BRAKE SERVO VACUUM UNIT SENSOR	-
K105	BRAKE SERVO VACUUM UNIT SENSOR
K15	LAMBDA SENSOR ON PRE-CATALYZER
K16	LAMBDA SENSOR ON PRE-CATALYZER -2 ( CONNECTORS )
K17	LAMBDA SENSOR ON CATALYZER ( CONNECTORS )
K18	LAMBDA SENSOR ON CATALYZER 2 ( CONNECTORS )
K30	ENGINE OIL PRESSURE SENSOR SWITCH ( CONNECTORS )
K36	ENGINE TEMPERATURE SENDER UNIT ( CONNECTORS )	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
K36	ENGINE TEMPERATURE SENDER UNIT ( CONNECTORS )	1056F
K41	AIR FLOW METER ( FRONT )	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
K46	RPM SENSOR ( CONNECTORS )
K47	TIMING SENSOR. ( CONNECTORS )	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
K47	TIMING SENSOR. ( CONNECTORS )	1056F
K50	DETONATION SENSOR 1 ( CONNECTORS )
K50	DETONATION SENSOR 1 ( CONNECTORS )
K51	KNOCK SENSOR -2
K55	ACCELERATOR PEDAL POTENTIOMETER ( FRONT )
K83	FUEL PRESSURE SENSOR	1056F
L10	FUEL VAPOUR RECOVERY SOLENOID
L10	FUEL VAPOUR RECOVERY SOLENOID
L15	Variable geometry solenoid valve	1072D
L20	AIR CONDITIONING COMPRESSOR ENGAGEMENT ELECTRO-MAGNET ( CONNECTORS )
M1	BODY COMPUTER
M10	ENGINE MANAGEMENT ECU	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
N40	FUEL PUMP AND SENDER UNIT
N70	INJECTOR	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
N75	THROTTLE BODY ACTUATOR ( CONNECTORS )	Op. 1056B ALIMENTAZIONE MULTI-POINT INJECTION (MPI)
N76	TIMING VARIATOR ACTUATOR	1056F
N77	Fuel pressure regulator	1056F

Description - PETROL ENGINE ELECTRONIC MANAGEMENT - Alfa Romeo GT 3.2 V6

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;exhaust with catalytic preconverters and two catalytic converters controlled by four lambda sensors;fuel 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.The electronic management system described above ensures that this engine complies with the toughest emission control regulations and acts as a continuous EOBD monitoring system.For more detailsThe system is also controlled by two relays located in the engine compartment junction unit.The supply lines to the control unit and the various system components (sensors and actuators) are protected by a maxifuse and other fuses, located in the engine compartment fuse control unit.

Operational description - PETROL ENGINE ELECTRONIC MANAGEMENT - Alfa Romeo GT 3.2 V6

Engine management control unit M10controls and regulates the entire electronic ignition and injection system.The direct system power supply is received from the battery via the line of maxifuse IE of B5.The ignition-controlled power supply (15/54) is received from a line protected by fuse F11 from the engine compartment control unit B1Ato pin 47 of connector A of M10.The control unit M10is supplied directly by the battery at pin 15 of connector A via a line protected by fuse F6 of control unit B1A, which cuts off the circuit in the case of a crash and so prevents the dangerous spilling of fuel.Main injection relay T9 of B1B controls the entire system: t is energized by an control signal (earth) from pin 31 of connector A of engine control unit M010 and then forwards a power supply:to pins 16, 32 and 48 of connector A of the control unit via a line protected by fuse F8 of B1A ;to air flow meter K41 , to fuel vapour recovery solenoid L10 , to VVT actuator N76 and to lambda sensor K15, K16, K17 and K18 (all these lines are protected by fuse F9 of B1A ;.to injectors N70 , and coils A30 , via a line protected by fuse F10 of B1A .Fuel pump relay T10 of B1Bis supplied by fuse F4 of B1A.it is energized by a control signal (earth) coming from pin 30 f connector A of the junction unit M10and supplies power to electric fuel pump N40, which is earthed via inertia switch I50.. which cuts out the circuit in case of impact and thus prevents a hazardous outflow of fuel.The control unit M10receives signals from the various sensors in order to control all engine service parameters.rpm sensor K46supplies, via frequency signal sent to pins 10 and 59 of connector B of control unit M10, information on engine speed: these two signals are very low intensity and are thus appropriately shielded.timing sensor K47is supplied from pin 51 of connector B of control unit M10, receives a reference earth from pin 26 of connector B and sends a signal with frequency corresponding to the fuel pressure to pin 42 of control unit connector B.Engine temperature sending unit K36receives a reference earth from pin 26 of connector B of control unit M10and supplies a signal proportional to coolant temperature to pin 25 of control unit connector B.The four lambda sensors K15, K16, K17and K18supply control unit M10with information on the correct composition of the air-fuel mixture in four different exhaust positions: two upstream of the preconverters, two downstream of the preconverters.Sensor K15on the right preconverter, sends a signal to pin 23 of connector B of M10, while pin 55 supplies a reference earth. Sensor K15is heated by a coil to ensure it works efficiently even when cold. The resistance is supplied by the main relay and receives an earth signal from pin 34 of connector B of control unit M10.Sensor K16., while pin 7 supplies a reference earth. Sensor K16is heated by a coil supplied by the main relay and receives an earth signal from pin 2 of connector B of control unit M10.Sensor K17downstream of the right converter (front), sends a signal to pin 28 of connector B of M10, while pin 60 supplies a reference earth. Sensor K17is heated by a coil supplied by the main relay and receives an earth signal from pin 50 of connector B of control unit M10.Sensor K18downstream of the left converter (rear), sends a signal to pin 44 of connector B of M10, while pin 12 supplies a reference earth. Sensor K18is heated by a coil supplied by the main relay and receives an earth signal from pin 18 of connector B of control unit M10.Knock sensor 1 K50provides, via a frequency signal sent to pin 22 of connector B of control unit M10, information on knock conditions: receives a reference earth from pin 54 of connector B. These signals are very low intensity and are thus shielded.Knock sensor 2 K51, in the same way, sends a frequency signal to pin 6 of connector B of control unit M10, information on knock conditions: receives a reference earth from pin 38 of connector B. These signals are very low intensity and are thus shielded.Air flow meter K41(supplied by the main relay) receives a reference voltage from pin 63 of engine management unit connector A and sends a signal proportional to air flow to pin 57 of connector A. Inside K41there is also an air temperature sensor: a sensor reference earth is supplied by pin 25 of connector A of M10, while pin 54 of connector A receives the air temperature signal.accelerator pedal K55is fitted with two integral potentiometers (a main one and a safety one). The first receives a power supply and earth, respectively, from pins 56 and 24 of connector A of M10and sends the signal to pin 8 of the same connector. The second receives a power supply and earth, respectively, from pins 7 and 25 of connector A of M10and sends the signal to pin 40 of the same connector.Pin 27 of connector A of M10receives a signal from the brake light switch I30supplied by an ignition-operated supply (INT) from fuse F37 of junction unit B2.Pin 59 of connector A of M10receives the signal coming from the clutch switch I31The control unit M10controls the opening of the individual injectors N70, via duty cycle signals - sent from pins 19 (cyl 1), 3 (cyl. 2), 20 (cyl.3), 35 (cyl.4) , 52 (cyl. 5) and 36 (cyl.6) of connector B of M10.Injectors N70receive a power supply to enable opening from the main relay.The control unit M10also controls coils A30via control signals (earth) to the coil primary windings, while the second winding sends a pulse to the spark plugs: from pins 16, 15 and 14 of connector B for cylinders 1-3 and from pins 30, 31 and 32 of connector B of M10for cylinders 4-6.The primary windings of coils A30receive a power supply to enable opening from the main relay.Throttle body actuator N75is equipped with two built-in potentiometers connected in parallel: this controls throttle opening by means of a step motor.The motor receives a supply from pins 17 - 49 and 1 - 33 of connector B of M10.Pin 58 of connector B sends power to both potentiometers, while pin 58 sends an earth signal to the potentiometers; pins 40 and 24 of the same connector receive signals that reach throttle body actuator N75.Fuel vapour recovery solenoid L10allows fuel vapours to flow through toward the engine intake, where they join the mixture that is entering the combustion chamber. Valve L10, supplied by the main relay, is opened by the control unit when the engine is subject to load via a duty cycle signal from pin 2 of connector A of M10The control unit M10receives at pin 60 of connector A - a signal from the minimum engine oil pressure sensor K30Control unit M10 is then connected via the CAN to Body Computer M1 and other nodes in the network: it sends information through this connection on:system self-diagnosis, which may be used by connecting to connector G of M1 coolant temperature sensor, w hich is sent to instrument panel E50 that controls the associated gauge and warning light;engine rpm, that is sent to the rev counter on instrument panel E50;minimum engine oil pressure, which is sent to instrument panel E50 that controls the warning light;It receives, via the CAN, a speedometer signal generated by ABS control unit M50Control unit self-diagnostic signal M10also generates a signal that leaves pin 46 of connector A - that is connected directly to the EOBD warning light located in the instrument panel E50.Self-diagnostic data can be read by connecting to connector G of the Body Computer M1pin 7: receives signals from pin 53 of connector A of control unit M10via the special diagnostic line.