1.9L - Diesel Fuel Injection - TDI, ALH, BEW (Generic Scan Tool) (A4 Platform)

• Diesel Fuel Injection
  • Diesel-Direct Fuel Injection System, servicing
    • General notes for Diesel-Direct Fuel Injection System
    • Overview of component locations
    • Injection pump, servicing
      • Notes
      • Versions of securing bolts for injection pump sprocket
    • Intake manifold flap, servicing
    • Injectors, removing and installing
      • Recommended special tools and equipment
      • Removing
      • Installing
    • Injectors, checking
      • Notes
      • Recommended special tools and equipment
      • Test requirement
      • Checking injection pressure
      • Checking for proper seal
    • Safety precautions
    • Rules of cleanliness
  • Components and functions, checking
    • Check Engine Speed (RPM) sensor
      • Notes
      • Recommended special tools and equipment
      • Test requirements
      • Test sequence
        • Notes
        • Vehicles with 80-pin control module
        • Vehicles with 121-pin control module
      • Vehicles with 121-pin control module
    • Manifold Absolute Pressure (MAP) sensor and Barometric Pressure (BARO) sensor, checking
      • Notes
      • Recommended special tools and equipment
      • Test requirements
      • Function test
      • Checking wiring
        • Notes
        • Vehicles with 80-pin control module
        • Vehicles with 121-pin control module
        • Continuation for all vehicles
    • Engine Coolant Temperature (ECT) sensor, checking
      • Recommended special tools and equipment
      • Test requirement
      • Function test
      • Checking wiring
        • Notes
        • Vehicles with 80-pin control module
        • Vehicles with 121-pin control module
    • Fuel Temperature Sensor, checking
      • Notes
      • Recommended special tools and equipment
      • Test requirement
      • Test sequence
        • Notes
        • Vehicles with 80-pin control module
        • Vehicles with 121-pin control module
    • Modulating Piston Displacement Sensor and quantity adjuster, checking
      • Notes
      • Recommended special tools and equipment
      • Test requirement
      • Test sequence
        • Modulating Piston Displacement Sensor -G149-, checking
        • Vehicles with 80-pin control module
        • Vehicles with 121-pin control module
      • Checking Quantity Adjuster -N146-
        • Notes
        • Vehicles with 80-pin control module
        • Vehicles with 121-pin control module
    • Needle lift sensor, checking
      • Notes
      • Recommended special tools and equipment
      • Test requirement
      • Test sequence
        • Notes
        • Vehicles with 80-pin control module
        • Vehicles with 121-pin control module
    • Cold Start Injector, checking
      • Notes
      • Recommended special tools and equipment
      • Test requirement
      • Test sequence
        • Notes
        • Vehicles with 80-pin control module
        • Vehicles with 121-pin control module
    • Mass Air Flow (MAF) sensor, checking
      • Notes
      • Recommended special tools and equipment
      • Test requirement
      • Function test
      • Voltage supply for Mass Air Flow (MAF) sensor, checking
      • Checking signal and Ground wires of Mass Air Flow (MAF) Sensor
        • Notes
        • Vehicles with 80-pin control module
        • Vehicles with 121-pin control module
    • Change-over valve for intake manifold flap, checking
      • Recommended special tools and equipment
      • Test requirements
      • Checking function
      • Test sequence
        • Notes
        • Vehicles with 80-pin control module
        • Vehicles with 121-pin control module
  • Control module for Diesel- Direct Fuel Injection System
    • Voltage supply for Diesel-Direct Fuel Injection System, checking
      • Recommended special tools and equipment
      • Test requirements
      • Test sequence
        • Notes
        • Vehicles with 80-pin control module
      • Vehicles with 121-pin control module
    • Control module for Diesel-Direct Fuel Injection System, replacing
      • Work procedure
    • Terminal resistance for CAN-Bus, checking
      • Notes
      • Recommended special tools and equipment
      • Test requirements
      • Test sequence
        • Vehicles with 80-pin control module and manual transmission
        • Vehicles with 80-pin control module and autom. transmission
        • Checking CAN-Bus wires
        • Vehicles with 121-pin control module