Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Section 9 (1.8L - Turbo Engine Controls - Fuel Injection & Ignition, Engine Code(S): AMB)
2009 Audi A6 BaseSECTION Section 9 (1.8L - Turbo Engine Controls - Fuel Injection & Ignition, Engine Code(S): AMB)
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
- 01 On Board Diagnostic (OBD)
- 24 Multiport Fuel Injection (MFI)
- Motronic injection system, servicing
- Safety precautions
- Rules for cleanliness
- Technical data
- Component locations, overview
- Notes
- Locations on connector bracket
- Location of Fuel Pump (FP) Relay -J17-
- Location of Brake Light Switch -F- and Brake Vacuum Vent Valve Switch -F47-, Clutch Vacuum Vent Valve Switch -F36-
- Location of Throttle Position (TP) Sensor 1 -G79- and Sender -2- for accelerator pedal position -G185-
- Location of Engine Control Module (ECM) in electronics box (plenum chamber)
- Component locations in electronics box (plenum chamber)
- Location of Secondary Air Injection (AIR) Solenoid Valve -N112- and Recirculating valve for turbocharger -N249-
- Location of Charge Air Pressure Sensor -G31-
- Electrical testing using VAG1598/31 test box
- Procedure after interruption of voltage supply
- Engine Control Module (ECM) (without metal anti-theft housing), replacing
- Engine Control Module (ECM) (with metal anti-theft housing), replacing
- Idle speed (RPM), checking
- System pressure, fuel pressure regulator and residual pressure, checking
- Fuel injectors, checking
- Fuel rail with injectors, disassembling and assembling
- Fuel injectors, removing and installing
- Injection quantity, proper seal and spray pattern of fuel injectors, checking
- Fuel Pump (FP) relay -J17- and relay activation, checking
- Mass Air Flow (MAF) sensor -G70-, checking
- Intake air system for leaks (unmetered air), checking
- Fuel system, bleeding
- Oxygen sensor system
- Oxygen Sensor (O2S) and Oxygen Sensor control before catalytic converter, checking
- Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC), checking
- Oxygen Sensor (O2S) heater -Z19- for oxygen sensor before Three Way Catalytic Converter (TWC), checking
- Oxygen Sensor (O2S) and Oxygen Sensor control before Three Way Catalytic Converter (TWC), checking
- Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC), checking
- Oxygen Sensor (O2S) heater 1 -Z29- behind Three Way Catalytic Converter (TWC), checking
- Oxygen Sensor (O2S), removing and installing
- Fuel tank ventilation system, checking
- Electronic Power Control (EPC) system, checking
- EPC system function
- Electronic Power Control (EPC) warning lamp -K132- in instrument cluster
- Electronic Power Control (EPC) warning lamp -K132-, checking
- Throttle Valve Control Module -J338-, checking
- Throttle Valve Control Module -J338-, adapting
- Throttle valve, checking for soiling
- Throttle valve control module, cleaning
- Angle sensors for throttle drive -G187- and -G188-, checking
- Throttle Position (TP) sensor 1 -G79- and Sender for accelerator pedal position -G185-, checking
- Kick-down function, adapting
- Brake Light Switch -F- and Brake Pedal Switch -F47-
- Clutch Vacuum Vent Valve Switch -F36-, checking
- Cruise Control System (CCS) switch -E45-, testing
- Additional signals, checking
- Vacuum Hose Diagram(S)
- Motronic injection system, servicing
- 28 Ignition/Glow plug system
- Ignition system, checking
- General notes on ignition system
- Safety precautions
- Technical Data
- Ignition coils with power output stages, checking
- Motronic ECM Power supply relay -J271-, checking
- Engine speed (RPM) sensor -G28-, checking
- Intake Air Temperature (IAT) sensor -G42-, checking
- Engine Coolant Temperature (ECT) sensor -G62-, checking
- Motronic Engine Control Module (ECM) power supply, checking
- Knock recognition control limit, checking
- Knock sensors, checking
- Camshaft Position (CMP) sensor -G40-, checking
- Misfire recognition, checking
- Ignition system, checking
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.