1.9L - Diesel Fuel Injection - ALH (A4 Platform)

• Diesel direct injection system, servicing
  • General information
  • Safety precautions
  • Rules for cleanliness
  • Component locations, overview
  • Injection pump, servicing
  • Intake manifold flap, servicing
  • Injection pump, removing and installing
    • Special tools and equipment
    • Removing
      • Notes
      • Vehicles with manual transmission
      • Vehicles with automatic transmission
    • Installing
      • Notes
      • Vehicles with manual transmission
      • Vehicles with automatic transmission
  • Start of injection, dynamically checking and adjusting
    • Notes
    • Special tools and equipment
    • Checking and adjustment conditions
    • Work sequence
  • Injectors, removing and installing
    • Notes
    • Special tools and equipment
    • Removing
    • Installing
  • Injectors, checking
    • Notes
    • Special tools and equipment
    • Test conditions
    • Checking injection pressure
    • Checking for leaks
  • Injection timing device cover gasket, replacing
• Diesel fuel injection components and functions, checking
  • Engine speed sensor, checking
    • Notes
    • Special tools and equipment
    • Test sequence
  • Manifold Absolute Pressure (MAP) sensor and Barometric Pressure (BARO) sensor, checking
    • Notes
    • Special tools and equipment
    • Test sequence
  • Engine Coolant Temperature (ECT) sensor, checking
    • Notes
    • Special tools and equipment
    • Test conditions
    • Test sequence
  • Brake light switch and brake pedal switch, checking
    • Notes
    • Special tools and equipment
    • Checking conditions
    • Test sequence
  • Clutch vacuum vent valve switch, checking
    • Notes
    • Special tools and equipment
    • Checking conditions
    • Test sequence
  • Intake Air Temperature (IAT) sensor, checking
    • Notes
    • Special tools and equipment
    • Test sequence
  • Fuel temperature sensor, checking
    • Notes
    • Special tools and equipment
    • Test sequence
  • Modulating piston displacement sensor- G419- and quantity adjuster, checking
    • Notes
    • Special tools and equipment
    • Test conditions
    • Test sequence
  • Needle lift sensor, checking
    • Notes
    • Special tools and equipment
    • Test sequence
  • Diesel injection timing control range, checking
    • Notes
    • Test sequence
  • Mass Air Flow (MAF) sensor, checking
    • Notes
    • Special tools and equipment
    • Requirements
    • Test sequence
    • Testing power supply to MAF sensor
  • Change-over valve for intake manifold flap, checking
    • Special tools and equipment
    • Requirements
    • Checking function
    • Test sequence
• Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-
  • Engine control module voltage supply, checking
    • Special tools and equipment
    • Test conditions
    • Test sequence
  • Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-, replacing
    • Special tools and equipment
    • Removing
    • Installing
  • Engine Control Module (ECM) -J248-, coding
    • Notes
    • Special tools and equipment
    • Work sequence
• Additional signals, checking
  • Speed signal, testing
    • Notes
    • Special tools and equipment
    • Test conditions
    • Test sequence
  • Automatic transmission shift change signal, checking
    • Notes
    • Special tools and equipment
    • Test sequence
  • A/C system signals, checking
    • Special tools and equipment
    • Test conditions
    • Compressor shut-off, checking
    • A/C signal and engine speed adaptation, checking
      • Notes
      • Test sequence
  • Cruise Control System (CCS), checking
    • Notes
    • Special tools and equipment
    • Check conditions
    • Test sequence
• CAN-Bus, checking
  • CAN-Bus, checking (through MY 1999)
    • Notes
    • Function
    • Special tools and equipment
    • Vehicles with manual transmission
    • Vehicles with automatic transmission
    • Test conditions
    • Test sequence
      • Vehicles with manual transmission
        • Notes
        • If resistance is outside specified range:
        • If resistance is within specification:
      • Vehicles with automatic transmission
        • Notes
        • If resistance is within specification:
        • Continuation for 115...135 Ω
    • CAN-Bus wiring, checking
  • CAN-bus, checking (from MY 2000)
    • Function
    • Further information:
    • Special tools, test equipment and auxiliary items
    • Test conditions
    • Test sequence