Section 102 (MULTIPORT Fuel Injection (MFI) - 2.7L V6 BITURBO - APB, Bel)
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2005 Audi allroad, 2004 Audi allroad, 2004 Audi A6, 2003 Audi allroad, and 2003 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
- 24 Multiport Fuel Injection (MFI)
- Motronic Multiport Fuel Injection (MFI) system, servicing
- Safety precautions
- Rules for cleanliness
- Technical data
- Component locations, overview
- Intake manifold, removing and installing
- Wiring and component check with VAG1598/31 test box
- Procedure after interrupting voltage supply
- Motronic Engine Control Module (ECM) -J220- (without metal anti -theft housing), replacing
- Motronic Engine Control Module (ECM) -J220- (with metal anti -theft housing), replacing
- Idle speed, checking
- Fuel pressure regulator and residual fuel pressure, checking
- Fuel injectors, checking
- Fuel injection volume, fuel injector leakage and spray pattern of injectors, checking
- Fuel rail with fuel injectors, disassembling and assembling
- Fuel Pump (FP) relay -J17- and relay activation, checking
- Mass Air Flow (MAF) sensor -G70-, checking
- Notes
- Voltage supply for Mass Air Flow (MAF) sensor, checking (Hitachi MAF sensor)
- Wire connections for Mass Air Flow (MAF) sensor, checking (Hitachi MAF sensor)
- Voltage supply for Mass Air Flow (MAF) sensor, checking (Bosch MAF sensor)
- Wire connections for Mass Air Flow (MAF) sensor, checking (Bosch MAF sensor)
- Air system for leaks (un-metered air), checking
- Oxygen sensor control, checking
- Function of oxygen sensor control
- Oxygen sensor and oxygen sensor control before Three Way Catalytic Converter (TWC), checking
- Oxygen sensors aging, oxygen sensor before catalytic converter, checking
- Oxygen sensor and oxygen sensor control behind catalytic converter, checking
- Oxygen sensor heater for oxygen sensor, checking
- Oxygen sensor signal wire and activation, checking
- Notes
- Checking oxygen sensor wiring for Heated Oxygen Sensor (HO2S) -G39-
- Checking wiring for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
- Checking wiring for Heated Oxygen Sensor (HO2S) 2 -G108-
- Checking wiring for Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131-
- Oxygen sensors, removing and installing
- Evaporative Emission (EVAP) system, checking
- Electronic Engine Power Control (EPC), checking
- Function of Engine Power Control (EPC)
- Significance of electronic Engine Power Control (EPC) warning light in instrument cluster
- Throttle valve control module -J338 -, checking
- Throttle valve control module -J338 -, adaptation
- Angle sensor 1 for throttle drive (power accelerator actuation) -G187 - and Angle sensor 2 for throttle drive (power accelerator actuation) -G188-, checking
- Throttle Position (TP) sensor -G79- and Sender 2 for accelerator pedal position - G185-, checking
- Kick-Down function, adaptation
- Vacuum system layout
- General air flow
- Boost pressure control, subsystem
- EVAP system (tank ventilation system), subsystem
- Recirculating air control (deceleration recirculating air control), subsystem
- Crankcase ventilation, subsystem
- Suction jet pump (vehicles with automatic transmission)
- Additional signals, checking
- Fuel consumption signal for on-board computer, checking
- Coolant temperature signal, checking
- Vehicle Speed Signal (VSS), checking
- Fuel tank level signal, checking
- Brake light switch -F- and brake pedal switch -F47-, checking
- Clutch Vacuum Vent Valve Switch -F36-, checking
- Crash signal, checking
- Signal for rough road recognition from ABS/EDL control module, checking
- Data exchange between Engine/ABS/Transmission control modules, checking
- Data exchange between control modules, checking
- Motronic Multiport Fuel Injection (MFI) system, servicing