198002601 - INTRODUCTION - DIESEL INJECTION PRESSURE PUMP ELECTRONIC CONTROL
DESCRIPTION OF COMPONENTS
Injection control unit
This is fitted in the engine compartment on the battery drip-cradle.Pin out for versions with: EURO 4, LAMBDA SENSORConnector A (vehicle wiring)01 - Battery positive02 - Battery negative03 - N.C.04 - Battery negative05 - Battery positive06 - Battery negative07 - N.C.08 - Accelerator pedal 2 position sensor earth09 - Accelerator pedal 1 position sensor signal10 - Fuel temperature sensor earth11 - Fuel temperature sensor signal12 - Air conditioning compressor pressure sensor earth13 - Air conditioning compressor pressure sensor signal14 - N.C.15 - N.C.16 - N.C.17 - Brake pedal main switch signal18 - N.C.19 - N.C.20 - Low pressure pump control relay21 - N.C.22 - Air conditioning compressor pressure sensor power supply23 - N.C.24 - N.C.25 - K line26 - N.C.27 - Fuel consumption signal28 - Key signal29 - Air conditioning compressor control relay30 - Accelerator pedal 1 position sensor earth31 - Accelerator pedal 2 position sensor signal32 - N.C.33 - N.C.34 - N.C.35 - N.C.36 - N.C.37 - N.C.38 - Cruise "Resume"39 - N.C.40 - N.C.41 - N.C.42 - N.C.43 - N.C.44 - N.C.45 - Accelerator pedal 1 position sensor power supply46 - Accelerator pedal 2 position sensor power supply47 - Immobiliser interface48 - N.C.49 - N.C.50 - N.C.51 - Lambda sensor heater control52 - Preheating control unit fault diagnosis signal53 - N.C.54 - Air conditioning request switch55 - N.C.56 - Cruise "Set/Increase"57 - N.C.58 - N.C.59 - N.C.60 - N.C.61 - N.C.62 - N.C.63 - N.C.64 - Lambda sensor signal65 - Lambda sensor signal66 - N.C.67 - N.C.68 - N.C.69 - Fan 2 control relay70 - N.C.71 - Diagnostic warning light control72 - Main control relay73 - N.C.74 - Water in fuel signal75 - N.C.76 - N.C.77 - Cruise "Off"78 - Cruise "Set/Decrease"79 - Clutch pedal switch signal80 - Brake pedal secondary switch signal81 - N.C.82 - N.C.83 - CAN (low channel)84 - CAN (high channel)85 - N.C.86 - Lambda sensor earth87 - Lambda sensor signal88 - N.C.89 - N.C.90 - Fan 1 control relay91 - N.C.92 - N.C.93 - Preheating control unit control relay94 - N.C.Connector B (engine wiring)01 - Bank 2 injector Cylinder 3 "High" control02 - Bank 2 injector Cylinder 2 "High" control03 - N.C.04 - N.C.05 - N.C.06 - N.C.07 - Engine rpm sensor screening08 - Rail pressure sensor earth09 - N.C.10 - N.C.11 - Timing sensor power supply12 - Engine rpm sensor negative (-) signal13 - Turbo pressure sensor power supply14 - N.C.15 - Turbo pressure actuator16 - Bank 1 injector Cylinder 1 "High" control17 - Bank 1 injector Cylinder 4 "High" control18 - N.C.19 - High pressure pump flow regulator power supply (BAT+)20 - Timing sensor earth21 - N.C.22 - N.C.23 - Turbo pressure sensor earth24 - N.C.25 - N.C.26 - N.C.27 - Engine rpm sensor positive (+) signal28 - Rail pressure sensor power supply29 - N.C.30 - N.C.31 - Bank 2 injector Cylinder 2 "Low" control32 - N.C.33 - Bank 1 injector Cylinder 4 "Low" control34 - N.C.35 - N.C.36 - N.C.37 - Intake duct air temperature sensor signal38 - N.C.39 - N.C.40 - Turbo pressure sensor signal41 - Water temperature sensor earth42 - Air flow sensor signal43 - Rail pressure sensor signal44 - Air temperature/flow rate sensor earth45 - N.C.46 - Bank 2 injector Cylinder 3 "Low" control47 - Bank 1 injector Cylinder 1 "Low" control48 - N.C.49 - High pressure pump flow regulator control50 - Timing sensor signal51 - N.C.52 - N.C.53 - Turbo air temperature sensor signal54 - N.C.55 - N.C.56 - Oil pressure signal57 - N.C.58 - Water temperature sensor signal59 - Throttle valve actuator60 - EGR actuatorPin out for versions with: EURO 4, DPFConnector A (vehicle wiring)01 - Battery positive02 - Battery negative03 - N.C.04 - Battery negative05 - Battery positive06 - Battery negative07 - N.C.08 - Accelerator pedal 2 position sensor earth09 - Accelerator pedal 1 position sensor signal10 - Fuel temperature sensor earth11 - Fuel temperature sensor signal12 - Air conditioning compressor pressure sensor earth13 - Air conditioning compressor pressure sensor signal14 - N.C.15 - N.C.16 - N.C.17 - Brake pedal main switch signal18 - N.C.19 - N.C.20 - Low pressure pump control relay21 - N.C.22 - Air conditioning compressor pressure sensor power supply23 - N.C.24 - N.C.25 - K line26 - N.C.27 - Fuel consumption signal28 - Key signal29 - Air conditioning compressor control relay30 - Accelerator pedal 1 position sensor earth31 - Accelerator pedal 2 position sensor signal32 - Exhaust gas 2 temperature sensor signal33 - Exhaust gas 2 temperature sensor earth34 - Exhaust gas 1 temperature sensor signal35 - Exhaust gas 1 temperature sensor earth36 - Differential pressure sensor signal DPF37 - Differential pressure sensor earth DPF38 - Cruise "Resume"39 - N.C.40 - N.C.41 - N.C.42 - N.C.43 - N.C.44 - Differential pressure sensor power supply DPF45 - Accelerator pedal 1 position sensor power supply46 - Accelerator pedal 2 position sensor power supply47 - Immobiliser interface48 - N.C.49 - N.C.50 - N.C.51 - N.C.52 - Preheating control unit diagnosis signal53 - N.C.54 - Air conditioning request switch55 - N.C.56 - Cruise "Set/Increase"57 - N.C.58 - N.C.59 - N.C.60 - N.C.61 - N.C.62 - N.C.63 - N.C.64 - N.C.65 - N.C.66 - N.C.67 - N.C.68 - N.C.69 - Fan 2 control relay70 - N.C.71 - Diagnostic warning light control72 - Main control relay73 - N.C.74 - Water in fuel signal75 - N.C.76 - N.C.77 - Cruise "Off"78 - Cruise "Set/Decrease"79 - Clutch pedal switch signal80 - Brake pedal secondary switch signal81 - N.C.82 - N.C.83 - CAN (low channel)84 - CAN (high channel)85 - N.C.86 - N.C.87 - N.C.88 - N.C.89 - N.C.90 - Fan 1 control relay91 - N.C.92 - N.C.93 - Preheating control unit control relay94 - N.C.Connector B (engine wiring)01 - Bank 2 injector Cylinder 3 "High" control02 - Bank 2 injector Cylinder 2 "High" control03 - N.C.04 - N.C.05 - N.C.06 - N.C.07 - Engine rpm sensor screening08 - Rail pressure sensor earth09 - N.C.10 - N.C.11 - Timing sensor power supply12 - Engine rpm sensor negative (-) signal13 - Turbo pressure sensor power supply14 - N.C.15 - Turbo pressure actuator16 - Bank 1 injector Cylinder 1 "High" control17 - Bank 1 injector Cylinder 4 "High" control18 - N.C.19 - High pressure pump flow regulator power supply (BAT+)20 - Timing sensor earth21 - N.C.22 - N.C.23 - Turbo pressure sensor earth24 - N.C.25 - N.C.26 - N.C.27 - Engine rpm sensor positive (+) signal28 - Rail pressure sensor power supply29 - N.C.30 - N.C.31 - Bank 2 injector Cylinder 2 "Low" control32 - N.C.33 - Bank 1 injector Cylinder 4 "Low" control34 - N.C.35 - N.C.36 - N.C.37 - Intake duct air temperature sensor signal38 - N.C.39 - Throttle valve diagnostic earth40 - Turbo pressure sensor signal41 - Water temperature sensor earth42 - Air flow sensor signal43 - Rail pressure sensor signal44 - Air flow rate sensor earth45 - N.C.46 - Bank 2 injector Cylinder 3 "Low" control47 - Bank 1 injector Cylinder 1 "Low" control48 - N.C.49 - High pressure pump flow regulator control50 - Timing sensor signal51 - N.C.52 - Throttle valve diagnostic signal53 - Turbo air temperature sensor signal54 - N.C.55 - Intake duct air temperature sensor earth56 - Oil pressure signal57 - N.C.58 - Water temperature sensor signal59 - Throttle valve actuator60 - EGR actuatorRPM SENSOR
Specifications
It is fitted on the cylinder block, facing the phonic wheel on the crankshaft.It is inductive, i.e. operated by magnetic field changes generated by the teeth passing in front of a phonic wheel (60-2 teeth).The injection control unit uses the rpm sensor signal to:
- determine the rotation speed;
- determine the crankshaft angular position.
Operation
The changeover from full to empty determined by the presence or absence of a gap brings about a magnetic flux change sufficient to generate an induced alternating voltage proportional to the number of teeth on the ring (or phonic wheel).The frequency and amplitude of the voltage sent to the electronic control unit provides it with details of crankshaft angular speed.1 - Brass bush2 - Permanent magnet3 - Plastic sensor casing4 - Coil winding5 - Core6 - Toothed ring gear or phonic wheel7 - Coaxial paired cable or electrical connectionThe recommended distance (gap) between the end of the sensor and the phonic wheel in order to obtain correct signals should be 0.8 - 1.5 mm.This distance is not adjustable. Therefore, if the gap is found to be outside the tolerance limits, check the condition of the sensor and phonic wheel.1 - Maximum magnetic flux2 - Minimum magnetic flux3 - Induced alternating voltage trendCAM ANGLE SENSOR
Specifications
This Hall effect sensor is fitted on the cylinder head, facing the camshaft drive pulley.A slot on the pulley allows the timing sensor to indicate the engine timing position.The injection control unit uses the timing sensor signal to identify T.D.C. at the end of compression.Operation
A current-carrying semiconductor layer submerged in a normal magnetic field (with force lines at right angles to the direction of the current) generates a potential difference known as a Hall voltage at the terminals of the semiconductor.If the intensity of the current remains constant, the generated voltage depends on magnetic field intensity alone. Periodic changes in magnetic field intensity are sufficient to generate a modulated electrical signal whose frequency is proportional to the speed at which the magnetic field changes. This change is achieved by making a magnetic ring with an opening (the internal part of the pulley), pass the sensor.As it moves, the metal part of the ring covers the sensor to block the magnetic field and thus generate a high (1) output signal. Conversely, the sensor generates a low (0) signal when the opening is over the sensor and a magnetic field is present.Together with the rpm and TDC signal, this signal allows the control unit to identify the cylinders and determine the injection point.1 - Pulley ring2 - Magnetic materialINTAKE AIR TEMPERATURE AND EXCESS PRESSURE SENSOR
Specifications
The excess pressure and intake air temperature sensor is an integral component which is designed to measure the pressure and the temperature of the air inside the intake manifold.It is fitted on the air intake manifold and the signal sent to the engine management control unit makes it possible to:- modulate the turbocharger pressureprotect the engine from overheatingdiagnose the operation of the air flow meter
Pressure sensor transfer function
The voltage of the output signal from the sensor varies according to the absolute pressure in accordance with this rule:Ua=(c1*pabs+c0)*Uswhere:- Ua = voltage of output signal in VUs = supply voltage in Vpabs = absolute pressure in kPac0 = 5.4/280c1 = 0.85/280 kPa-1
The trend is illustrated in the graph below.Tolerance of output signal (pressure)
The graph below illustrates t| ... DATA ERROR - CROPPED TEXT | Ошибка данных - Текст обрезан ... |
|---|
