Section 42 (MULTIPORT Fuel Injection (MFI) - 2.8L V6 Aha)
WARNING: This page is about a different car, the 1998 Audi A6 and 1997 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
- Multiport Fuel Injection
- Motronic Multiport Fuel Injection (MFI) and ignition system
- Component locations
- Safety precautions
- Rules of cleanliness
- Technical data
- Fuel injection system, servicing
- Idle speed, checking
- Heated Oxygen Sensor (HO2S) and Oxygen Sensor (O2S) control before TWC, checking
- Oxygen Sensor (O2S) heater before TWC, checking
- Oxygen Sensor (O2S) and Oxygen Sensor (O2S) control behind TWC, checking
- Oxygen Sensor (O2S) heater behind TWC, checking
- Oxygen Sensor (O2S) aging, bank 1, sensor 1, checking
- Oxygen Sensor (O2S) aging, bank 2, sensor 1, checking
- Engine operating conditions (engine electronics), checking
- Mass Air Flow (MAF) sensor, checking
- Engine Coolant Temperature (ECT) sensor, checking
- Intake Air Temperature (IAT) sensor, checking
- Engine Speed (RPM) sensor, checking
- Voltage supply to Engine Control Module (ECM), checking
- Fuel pump relay and connections, checking
- Fuel injectors, checking
- Fuel injectors, checking for leakage
- Fuel pressure, fuel pressure regulator and residual fuel pressure, checking
- Evaporative Emissions (EVAP) canister purge regulator valve -N80-, checking
- Secondary Air Injection (AIR) system, checking
- Secondary Air Injection (AIR) pump motor and relay, checking
- Leak Detection Pump (LDP) -V144-, checking
- Intake air system, checking for leaks
- Throttle valve control module, checking
- Notes
- Required special tools and test equipment
- Function
- Throttle valve control module power supply, checking
- Closed Throttle Position (CTP) switch, checking
- Throttle drive and angle sensor for throttle drive, checking
- Throttle Position (TP) sensor, checking
- Throttle valve control module, adaptation to Engine Control Module (ECM)
- Intake Manifold Tuning (IMT) system
- Auxiliary signals, checking
- Motronic Multiport Fuel Injection (MFI) and ignition system