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Checking and adjusting the fuel injection control subsystem (VW Passat B4)

  • Main
  • Passat
  • Passat B4
  • 16-valve engine
  • Control system «KE-Motronic»
  • Checking and adjusting the fuel injection control subsystem
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When working on the KE-Motronic KSUD, it is necessary to observe the same precautions as when working on the Digifant KSUD, except that when checking the compression in the engine cylinders, it is not the electrical wiring blocks that should be disconnected from the injectors, but the fuel supply lines.

Work on the fuel injection control subsystem KSUD "KE-Motronic", which is a modified injection system "KE-Jetronic" (see Appendix), are performed in general, as on the K-Jetronic injection system. Below are listed only those operations, the execution method of which differs from those described for the K-Jetronic system.

Fig. 2-211. Placement of the elements of the fuel injection control subsystem KE-Motronic on the…

Fig. 2-211. Placement of the elements of the fuel injection control subsystem KE-Motronic on the vehicle:
1 - air flow meter;
2 — throttle body;
3 - pressure regulator;
4 - coolant temperature sensor;
5 - idle speed controller;
6 — nozzle;
7 - starting nozzle;
8 — fuel dispenser;
9 — purge electromagnetic valve and adsorber shut-off valve;
10 — connector of the oxygen content sensor in the exhaust gases

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The text has been checked: Kolesnikov Artem

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Fuel injection control subsystem
Integrated engine management system «KE-Motronic»
Next articles
Checking the idle speed
Adjusting the CO content in exhaust gases
Checking and adjusting the idle switch
Checking and adjusting the full load switch
Adjusting the air flow meter potentiometer
Adjusting the position of the air flow meter pressure disc


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Scheme 19. Control unit for fuel injection system 4AV, ignition… Golf 4 (1997-2004)
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Digifant fuel injection control unit, self-diagnostic unit Transporter T4 (1990-2003)
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Passat B6 
  • General information
  • User manual
  • Maintenance
  • Petrol engine 1.6L
  • Engine repair
  • Cooling and lubrication system
  • Fuel injection system
  • Petrol engine 2.0L
  • Engine repair
  • Lubrication system
  • Cooling system
  • Fuel and exhaust systems
  • Diesel engine 2.0L
  • Engine repair
  • Cooling and lubrication system
  • Fuel and exhaust systems
  • Transmission
  • Clutch
  • Mechanical gearbox
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Passat B5 
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  • Weekly checks
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  • Power unit
  • Engine repair
  • Cooling system
  • Fuel system (petrol)
  • Fuel system (diesel)
  • Engine management
  • Exhaust system
  • Transmission
  • Clutch
  • Car gearbox
  • Drive shafts
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  • Electrical circuits
Passat B4 
  • General information
  • User manual
  • Maintenance
  • Technical data
  • 8-valve engine
  • Engine repair
  • Cooling and lubrication system
  • Supply system
  • Ignition system
  • Fuel injection «Mono-Jetronic»
  • Control system «Mono-Motronic»
  • Control system «Digifant»
  • Control system «Simos»
  • 16-valve engine
  • Engine repair
  • Cooling and lubrication system
  • Fuel injection «K-Jetronic»
  • Control system «KE-Motronic»
  • Control system «Digifant»
  • Diesel engine
  • Engine repair
  • Cooling and lubrication system
  • Power and control system
  • Turbocharging system
  • Digital control system
  • Transmission
  • Clutch
  • Manual gearbox
  • Hydromechanical gearbox
  • Front wheel drive
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  • Power devices
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Passat B3 
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  • Driving Tips
  • Maintenance instructions
  • Technical data
  • Power unit
  • Engine repair
  • Ignition system
  • Lubrication system
  • Cooling system
  • Supply system
  • Petrol injection system
  • Diesel engine
  • Exhaust system
  • Transmission
  • Clutch
  • Car gearbox
  • Chassis
  • Suspension
  • Steering
  • Brake system
  • Wheels and tires
  • Body
  • Exterior
  • Interior
  • Heating system
  • Electrical equipment
  • Power devices
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  • Equipment and devices
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  • Electrical circuits
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  • Introduction to instructions
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