Overview - Injection System, Engine Compartment AUDI A4/A5

Courtesy of AUDI OF AMERICA, LLC

1. Heated Oxygen Sensor
   • The Oxygen Sensor 1 Before Catalytic Converter -GX10- is composed of:
     • Heated Oxygen Sensor -G39-
     • Oxygen Sensor Heater -Z19-
   • The Oxygen Sensor 1 After Catalytic Converter -GX7- is composed of:
     • Oxygen Sensor after Catalytic Converter -G130-
     • Heater for Oxygen Sensor 1 after Catalytic Converter -Z29-
   • Overview. Refer to OVERVIEW - HEATED OXYGEN SENSOR .
2. Particulate Filter Differential Pressure Sensor -G1037-
   • Overview. Refer to OVERVIEW - HEATED OXYGEN SENSOR .
3. Coolant Shut-Off Valve -N82-
   • Heater Coolant Shut-Off Valve -N279- for versions with a parking heater
4. Gear Recognition Sensor -G604-
   • For version with manual transmission
5. Dual Exhaust Temperature Sensor 1 -GX41-
   • with
   • Exhaust Gas Temperature Sensor 3 -G495-
   • Exhaust Gas Temperature Sensor 4 -G648-
6. Accelerator Pedal Module -GX2-
   • with
     • Accelerator Pedal Position Sensor -G79-
     • Accelerator Pedal Position Sensor 2 -G185-
   • The components cannot be replaced separately.
   • Overview. Refer to OVERVIEW - ACCELERATOR PEDAL MODULE .
7. Brake Lamp Switch -F-
   • Overview. Refer to OVERVIEW - BRAKE BOOSTER/BRAKE MASTER CYLINDER .
8. Clutch Position Sensor -G476-
   • Consists of
     • Clutch Pedal Switch -F36-
     • Clutch Pedal Starter Interlock Switch -F194-
   • For version with manual transmission
9. Coolant Recirculation Pump -V50-, After-Run Coolant Pump -V51-
   • Overview. Refer to OVERVIEW - ELECTRIC COOLANT PUMP .
10. Engine/Motor Control Module -J623-
    • Overview. Refer to OVERVIEW - ENGINE/MOTOR CONTROL MODULE .
11. Left Electrohydraulic Engine Mount Solenoid Valve -N144-
    • Integrated in the engine mount; cannot be replaced separately if faulty
    • Overview. Refer to OVERVIEW - ASSEMBLY MOUNTS .
12. Engine Coolant Temperature Sensor on Radiator Outlet -G83-
    • Overview. Refer to OVERVIEW - ENGINE COOLANT TEMPERATURE SENSOR .
13. Charge Air Pressure Sensor -G31-
    • Overview. Refer to OVERVIEW - CHARGE AIR SYSTEM .
14. Right Electrohydraulic Engine Mount Solenoid Valve -N145-
    • Integrated in the engine mount; cannot be replaced separately if faulty
    • Overview. Refer to OVERVIEW - ASSEMBLY MOUNTS .
15. Mass Airflow Sensor -G70-
    • Overview. Refer to OVERVIEW - AIR FILTER HOUSING .