Direct Petrol Injection System with Bosch Motronic MED 7 - Volkspage

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Engine management Self-diagnosis The sensors and actuators are checked during the course of the self-diagnosis procedure. For diagnosis please use the current workshop literature and the VAS 5051 Vehicle Diagnostic, Testing and Information <strong>System</strong> or the VAS 5052 Vehicle Diagnosis and Service Information <strong>System</strong>. 253_132 253_036 Please note that repair group 01 is an integral part of "Guided Fault-Finding". It also includes the functions "Read data block" and "Final control diagnosis". The sensors and actuators shown in colour are checked during the self-diagnosis and Guided Fault- Finding procedures. 253_025 56
Notes 57 Solutions to questions on pages 58-59 1.) a,b,c 2.) c 3.) a,c 4.) b 5.) b, c 6.) a,b 7.) b,c 8.) c
Page 1 and 2:
Service. Self-Study Programme 253 D
Page 3 and 4:
Table of Contents Introduction . .
Page 5 and 6: Why has Volkswagen waited until now
Page 7 and 8: Homogeneous operation at high exhau
Page 9 and 10: Combustion process The term "combus
Page 11 and 12: Injection cycle Fuel is injected du
Page 13 and 14: Homogeneous lean charge mode This i
Page 15 and 16: Mixture formation process By inject
Page 17 and 18: Motronic control unit J220 Fuel pum
Page 19 and 20: Torque-based engine management syst
Page 21 and 22: Intake system In comparison with th
Page 23 and 24: This is how it works The driver inp
Page 25 and 26: Intake manifold flap actuated In st
Page 27 and 28: Air-mass flow meter G70 and intake
Page 29 and 30: This is how the exhaust gas recircu
Page 31 and 32: Fuel system The fuel system is divi
Page 33 and 34: This is how it works The fuel flows
Page 35 and 36: The fuel pressure regulating valve
Page 37 and 38: This is how it works Inlet with fin
Page 39 and 40: Activated charcoal canister system
Page 41 and 42: Exhaust system This was adapted to
Page 43 and 44: Broadband lambda probe (G39) The br
Page 45 and 46: Exhaust gas temperature sender (G23
Page 47 and 48: NOx sensor control unit (J583) This
Page 49 and 50: Function of the NOx sender The func
Page 51 and 52: Sulphur regeneration is a technical
Page 53 and 54: Variable valve timing Inner exhaust
Page 55: Positive terminal GND Input signal
Page 59 and 60: 5. What is the signal from the inta
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Direct Petrol Injection System with Bosch Motronic MED 7 - Volkspage

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