Fiat DUCATO 2.8 JTD 8V fino a 02/05 – DIESEL ENGINES ELECTRONIC MANAGEMENT – – POWER Setup – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring Diagram - DIESEL ENGINES ELECTRONIC MANAGEMENT - Fiat DUCATO 2.8 JTD 8V fino a 02/05

DIESEL ENGINE ELECTRONIC MANAGEMENT WIRING DIAGRAM Fiat DUCATO 2.8 JTD 8V fino a 02/05

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Components - DIESEL ENGINES ELECTRONIC MANAGEMENT - Fiat DUCATO 2.8 JTD 8V fino a 02/05

Component code	Description	Reference to the assembly
B001	JUNCTION UNIT
B002	JUNCTION UNIT UNDER DASHBOARD	-
B099	MAXI FUSE BOX ON BATTERY	-
B100	HEAT FLANGE FUSE	-
C010	LEFT FRONT EARTH	-
C040	ENGINE EARTH	-
C090	HEAT FLANGE EARTH	-
D001	FRONT/DASHBOARD COUPLING	-
D004	FRONT/ENGINE COUPLING	-
D097	SHORT CIRCUITING COUPLING	-
D145	FRONT/CILC (FUEL LEVEL GAUGE CIRCUIT) COUPLING	-
D186	FRONT/ABS COUPLING	-
E050	INSTRUMENT PANEL
H001	IGNITION SWITCH
I050	INERTIA SWITCH
J130	HEAT - FLANGE RELAY	-
J131	THERMAL STARTER RELAY	-
K032	ENGINE OIL LEVEL SENSOR
K035	DO NOT USE SENDER UNIT	-
K036	ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT	-
K044	AIR PRESSURE - TEMPERATURE SENSOR	-
K046	RPM SENSOR	-
K047	TIMING SENSOR	-
K055	ACCELERATOR PEDAL POTENTIOMETER	-
L036	TURBINE VARIABLE GEOMETRY CONTROL SOLENOID VALVE	-
L064	FLOW MODIFYING SOLENOID VALVE	-
L085	INJECTION PUMP THIRD PISTON DEACTIVATION SOLENOID VALVE	-
M010	ENGINE MANAGEMENT ECU	-
M050	ABS CONTROL UNIT	-
N041	FUEL PUMP AND EPIC LEVEL GAUGE
N070	INJECTOR
O003	HEAT - FLANGE	-
O004	THERMAL STARTER RESISTANCE	-
O007	OIL VAPOUR HEATING RESISTANCE	-
O020	Diesel heating resistance	-

Component location - DIESEL ENGINES ELECTRONIC MANAGEMENT - Fiat DUCATO 2.8 JTD 8V fino a 02/05

DIESEL ENGINE ELECTRONIC MANAGEMENT COMPONENT LOCATION Fiat DUCATO 2.8 JTD 8V fino a 02/05

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Component code	Description	Reference to the assembly
B001	JUNCTION UNIT
B002	JUNCTION UNIT UNDER DASHBOARD	-
B099	MAXI FUSE BOX ON BATTERY	-
B100	HEAT FLANGE FUSE	-
C010	LEFT FRONT EARTH	-
C040	ENGINE EARTH	-
C090	HEAT FLANGE EARTH	-
D001	FRONT/DASHBOARD COUPLING	-
D004	FRONT/ENGINE COUPLING	-
D097	SHORT CIRCUITING COUPLING	-
D145	FRONT/CILC (FUEL LEVEL GAUGE CIRCUIT) COUPLING	-
D186	FRONT/ABS COUPLING	-
E050	INSTRUMENT PANEL
H001	IGNITION SWITCH
I050	INERTIA SWITCH
J130	HEAT - FLANGE RELAY	-
J131	THERMAL STARTER RELAY	-
K032	ENGINE OIL LEVEL SENSOR
K035	DO NOT USE SENDER UNIT	-
K036	ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT	-
K044	AIR PRESSURE - TEMPERATURE SENSOR	-
K046	RPM SENSOR	-
K047	TIMING SENSOR	-
K055	ACCELERATOR PEDAL POTENTIOMETER	-
L036	TURBINE VARIABLE GEOMETRY CONTROL SOLENOID VALVE	-
L064	FLOW MODIFYING SOLENOID VALVE	-
L085	INJECTION PUMP THIRD PISTON DEACTIVATION SOLENOID VALVE	-
M010	ENGINE MANAGEMENT ECU	-
M050	ABS CONTROL UNIT	-
N041	FUEL PUMP AND EPIC LEVEL GAUGE
N070	INJECTOR
O003	HEAT - FLANGE	-
O004	THERMAL STARTER RESISTANCE	-
O007	OIL VAPOUR HEATING RESISTANCE	-
O020	Diesel heating resistance	-

Description - DIESEL ENGINES ELECTRONIC MANAGEMENT - Fiat DUCATO 2.8 JTD 8V fino a 02/05

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 Diesel engine is equipped with a UNIJET COMMON RAIL injection system. This features the use of an electronically controlled high injection pressure. The supply of fuel, known as the pilot injection, is optimized by the electronic control unit by means of the injector rather than managed by the pump.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;heater plugs;accelerator pedal;engine cooling;fuel preheating.The system is also controlled by dedicated relays in the engine bay 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 bay.

Operational Description - DIESEL ENGINES ELECTRONIC MANAGEMENT - Fiat DUCATO 2.8 JTD 8V fino a 02/05

Engine management control unit M10 controls and governs the entire electronic ignition and injection system.Engine bay control unit B001 houses fuses F02, F11, F17, F18, F20, F21, F22, and relays T19, T09, T10, designed to protect and control the supply to engine management unit M010 and the various sensors and solenoids.Main injection relay T09 controls the entire system: t is energized by an earth signal from pin 13 of connector A of engine control unit M010 and then forwards a power supply:to pin 4 of the control unit via the line of fuse F17 of B001;to pin 5 of the control unit via the line of fuse F22 of B001;to sensors: L064, L036, K044, L085;thermal starter O004.Fuel pump relay T10 of B001 is supplied by the line of fuse F21.This is excited by a control signal (earth) from pin 110 connector B of control unit M10 and supplies power to diesel heater coil O020.Relay J131 governs the power supply thermal starter coil O004. The power supply to the relay comes from a line protected by fuse F11. Engine management unit M010 excites the coil of J131 via an earth signal from pin 15 of connector A. The power supply supplied to coil O004 comes directly from the battery and is protected by fuse F02.Alternatively, the diesel is preheated by means of the HEAT-FLANGE system. The system heats air coming into the input manifold by means of a glow coil. Relay J131 receives an earth signal from engine management unit M010 - pin 15 connector A - and supplies power supply direct from the battery to resistance device O003. A dedicated fuse F74 protects the power supply from the resistance load.Control unit M010 receives signals from the various sensors in order to control all engine service parameters.Engine temperature sensor K036 communicates with engine management unit M010 at pins 82 and 83 of connector B.The air pressure/temperature sensor K044 is connected to pins 86, 93, 94, 95 of control unit M010 from which it receives a power supply and to which it provides a reference signal.Accelerator pedal K055 contains two integral potentiometers (a main one and a safety one). The former receives power and an earth signal from pins 78 and 76 of M010 respectively and sends a corresponding signal to pin 77. The latter receives power and an earth signalfrom pins 81 and 79 respectively and sends a signal to pin 80.The flow modifier solenoid valve L064 receives a power supply from the line for fuse F11 and is controlled by a signal for pin 111 connector B of M010.The variable geometry turbine solenoid valve L036 receives a power supply from the line for fuse F11 and is controlled by a signal for pin 16 connector A of M010.Injectors N070 receive a power supply to enable opening from pins 117 (cylinders 1 and 2) and 118 (cylinders 3 and 4) of M010.The engine management unit sends a command to injectors N070 from 119, 120, 121 and 114 for cylinders 1, 2, 3 and 4 respectively.The engine management control unit M010 is connected from pins 99, 100 and 102, 103, 104 with the rpm sensor. K046 and with the timing sensor K047.Engine management unit M010 is equipped with a CAN connection - from pins 9 and 10 connector A - to ABS control unit M050 - pins 29 and 30 -.Engine management unit M010 governs activation of the warning lights on instrument panel E050 from pins 21 and 14 of connector A if the injection system malfunctions.