199002145 - INTRODUCTION - DIESEL INJECTION PRESSURE PUMP ELECTRONIC CONTROL

INJECTION CONTROL UNIT (EDC 16C39 common rail)

It is fitted in the engine compartnent on the right side panel. The control unit the flash EPROM type, i.e. it can be reprogrammed from the outside without affecting the hardware.The injection control unit integrates the absolute pressure sensor.PIN OUT
A01 . Bank 2 injector Cylinder 3 "High" controlA02. Bank 2 injector Cylinder 2 "High" controlA03. N.C.A04. N.C.A05. N.C.A06 N.C.A07. N.C.A08. Rail pressure sensor earthA09. N.C.A10. N.C.A11. Timing sensor power supplyA12. Engine rpm sensor negative (-) signalA13. Turbo pressure sensor power supplyA14. N.C.A15 N.C.A16. Bank 1 injector Cylinder 1 "High" controlA17. Bank 1 injector Cylinder 4 "High" controlA18. N.C.A19. High pressure pump flow regulator power supply (BAT+)A20. Timing sensor earthA21. Oil level sensor signal inputA22 N.C.A23. Turbo pressure sensor earthA24. N.C.A25. N.C.A26. N.C.A27. Engine rpm sensor positive (+) signalA28. Rail pressure sensor power supplyA29. N.C.A30. N.C.A31. Bank 2 injector Cylinder 2 "Low" controlA32. N.C.A33. Bank 1 injector Cylinder 4 "Low" controlA34. N.C.A35. N.C.A36. N.C.A37. Intake manifold air temperature sensor signalA38. N.C.A39. Throttle valve fault diagnosis earthA40. Turbo pressure signalA41. Coolant temperature sensor earthA42. Air flow rate sensor signalA43. Rail pressure sensor signalA44. Air flow rate sensor earthA45. N.C.A46. Bank 2 injector Cylinder 3 "Low" controlA47. Bank 1 injector Cylinder 1 "Low" controlA48. N.C.A49. High pressure pump flow regulator controlA50. Timing sensor signalA51. N.C.A52. Throttle valve fault diagnosis signalA53. Turbo air temperature sensor signalA54. N.C.A55. N.C.A56. Oil pressure signalA57. N.C.A58. Water temperature sensor signalA59. Throttle valve actuatorA60. EGR actuatorK01. Battery positiveK02. Battery negativeK03. N.C.K04. Battery negativeK05. Battery positiveK06. Battery negativeK07. Turbo pressure actuatorK08. Accelerator pedal 2 position sensor earthK09. Accelerator pedal 1 position sensor signalK10. Fuel temperature sensor earthK11. Fuel temperature sensor signalK12. Air conditioning compressor pressure sensor earthK13. Air conditioning compressor pressure sensor signalK14. N.C.K15. N.C.K16. N.C.K17. Brake pedal main switch signalK18. N.C.K19. Alternator "L" signalK20. Low pressure pump relay feed (HSD)K21. N.C.K22. Air conditioning compressor pressure sensor power supplyK23. N.C.K24. N.C.K25. K lineK26. N.C.K27. N.C.K28. Key signalK29. Air conditioning compressor relay feedK30. Accelerator pedal 1 position sensor earthK31. Accelerator pedal 2 position sensor signalK32. N.C.K33. N.C.K34. N.C.K35. N.C.K36. N.C.K37. N.C.K38. N.C.K39. N.C.K40. Clutch pedal switch signal N.C. (+)K41. N.C.K42. N.C.K43. N.C.K44. N.C.K45. Accelerator pedal 1 position sensor power supplyK46. Accelerator pedal 2 position sensor power supplyK47. N.C.K48. N.C.K49. N.C.K50. N.C.K51. Lambda sensor heater controlK52. Preheating control unit fault diagnosis signalK53. Vehicle speed sensor earthK54. N.C.K55. Starter motor relay feedK56. N.C.K57. Reversing switch signalK58. N.C.K59. N.C.K60. N.C.K61. N.C.K62. N.C.K63. N.C.K64. Lambda sensor signalK65. Lambda sensor signalK66. N.C.K67. N.C.K68. N.C.K69. Fan 2 relay feedK70. N.C.K71. Diagnostic warning light controlK72. Main relay feedK73. N.C.K74. Water in fuel signalK75. Vehicle speed sensor signalK76. N.C.K77. N.C.K78. N.C.K79. N.C.K80. N.C.K81. N.C.K82. N.C.K83. CAN (low channel)K84. CAN (high channel)K85. N.C.K86. Lambda sensor earthK87. Lambda sensor signalK88. N.C.K89. N.C.K90. Fan 1 relay feedK91. N.C.K92. N.C.K93 Preheating control unit operationK94. Fan 3 relay feed

RPM SENSOR

Specifications

It is fitted on the cylinder block/crankcase facing the flywheel on the crankshaft.It is inductive type, i.e. its operation is determined by magnetic field changes generated by the teeth passing in front of the phonic wheel (60-2 teeth).The injection control unit uses the rpm signal for:- determining the rotation speed;- determining the angular crankshaft position
OperationThe 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 send to the electronic control unit provides the latter with an indication of the engine angular speed.
1. Brass bush2. Permanent magnet3. Plastic sensor casing4. Coil reel5. Polar core6. Ring gear or flywheelThe recommended distance (gap) between the end of the sensor and the flywheel for obtaining correct signals should be 0.8 - 1.5 mm.This distance is not adjustable. If the gap is found to be outside the tolerance limits, check the condition of the sensor and phonic wheel.

CAM 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 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 immersed in a normal magnetic field (force lines at right angles to current direction) generates a potential difference known as a Hall voltage at its terminals.If current intensity 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 with frequency proportional to the speed of magnetic field change.This change is achieved by making a magnetic ring (internal part of pulley) with an opening pass the sensor.As it moves, the metal part of the ring covers the sensor to block the magnetic field and thus generate a low ouput signal. Conversely, the sensor generates a high 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 injection point.
1. Pulley ring2. Magnetic material

EXCESS PRESSURE SENSOR

Specifications

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 pressure;- protect the engine from overheating- diagnose the operation of the air flow meter.
PIN OUT
PinDescriptionSignal type
1EarthEarth
2Air temperature sensor outputAnalogue output
3Power supply+5V input.
4Pressure sensor outputAnalogue output
PRESSURE SENSOR TRANSFER FUNCTION
Sensor specifications
TEMPERATURE in °C.RESISTANCE in Ohm.
MinimumNormalMaximum
- 40453014815351006
- 35337033576337823
- 30253502685428359
- 25192652037621487
- 20147851561416443
- 15114531207812702
- 10895194269901
- 5705574917783
0560558876168
5448747074926
103618.73791.13963.5
152938.53074.93211.3
202401.92510.62619.3
251975.82062.92150.1
301644.71715.41786.2
351374.21431.81489.5
401152.41199.61246.7
45969.91008.61047.4
50819.1851.1883.0
55694.2720.7747.1
60590.3612.3634.2
65503.6521.9540.2
70431.0446.3461.6
75370.1382.89395.7
80318.68329.48340.27
85275.25284.37293.48
90238.43246.15253.86
95207.12213.67220.23
100180.42186.00191.58
105157.37162.35167.32
110137.63142.08146.52
115120.68124.66128.63
120106.09109.65113.21
12593.4896.6899.88
13082.5885.4588.32

ENGINE COOLANT TEMPERATURE SENSOR

Specifications

This is fitted to the thermostat cup and detects coolant temperature by means of a dual NTC thermistor with negative resistance coefficient.One NTC thermistor sends the signal to the injection control unit whilst the other sends the signal to the temperature gauge and the warning light in the instrument panel.
The sensor is designed using semiconductor technology. In other words, the resistance level drops if sensor element temperature increases with increasing coolant temperature.Because the resistance does not change in linear fashion as temperature increases, it is relatively higher at low temperatures than at high temperatures.

AIR FLOW METER WITH BUILT IN AIR SENSOR

Specifications

The debimeter is located on the air intake sleeve and is hot film type.
The intake air temperature sensor is built into the support for the sensitive element inside the flow meter
1. Electronic circuit cover and measuring duct cover2. Electr
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