Audi Q7: Injection System

Component Location Overview - Injection System

Locations Engine Compartment

1 - Crankcase Ventilation Shut-Off Valve -N548-

2 - EVAP Canister Purge Regulator Valve 1 -N80-

3 - Coolant Recirculation Pump -V50-

• Component location. Refer to → Fig. " Coolant Recirculation Pump -V50- Component Location".
• Overview. Refer to → Chapter "Overview - Electric Coolant Pump".

4 - Transmission Fluid Cooling Valve -N509-

• Component location. Refer to → Fig. " Transmission Fluid Cooling Valve -N509- Component Location".
• Overview. Refer to → Chapter "Overview - Electric Coolant Pump".

5 - Accelerator Pedal Position Sensor -G79-/Accelerator Pedal Position Sensor 2 -G185-

• Component location. Refer to → Fig. " Accelerator Pedal Position Sensor -G79-/Accelerator Pedal Position Sensor 2 -G185- Component Location".

6 - Brake Lamp Switch -F-

• Component location. Refer to → Fig. " Brake Lamp Switch -F- Component Location".

7 - Engine Control Module -J623-

• Removing and installing. Refer to → Chapter "Engine Control Module -J623-, Removing and Installing".

8 - Charge Air Cooling Pump -V188-

• Component location. Refer to → Fig. " Charge Air Cooling Pump -V188- Component Location".
• Overview. Refer to → Chapter "Overview - Electric Coolant Pump".

9 - Intake Manifold Runner Position Sensor 2 -G512-

• Overview. Refer to → Chapter "Overview - Intake Manifold Lower Section with Fuel Rail".

10 - Intake Manifold Runner Position Sensor -G336-

• Overview. Refer to → Chapter "Overview - Intake Manifold Lower Section with Fuel Rail".

11 - Air Filter Bypass Door Valve -N275-

• Component location. Refer to → Fig. " Air Filter Bypass Door Valve -N275- Component Location".

12 - Secondary Air Injection Pump Motor -V101-

• Overview. Refer to → Chapter "Overview - Secondary Air Injection System".

Accelerator Pedal Position Sensor -G79-/Accelerator Pedal Position Sensor 2 -G185- Component Location

• In the accelerator pedal module -3-.

  Note

The Accelerator Pedal Position Sensor -G79- and the Accelerator Pedal Position Sensor 2 -G185- are part of the accelerator pedal module and cannot be replaced separately.

Removing and installing. Refer to → Fuel Supply - Gasoline Engines; Rep. Gr.20; Accelerator Mechanism; Accelerator Pedal Position Sensors G79/G185, Removing and Installing

Brake Lamp Switch -F- Component Location

• In the engine compartment on the brake master cylinder.

  1 - Connector for Brake Lamp Switch -F-

Removing and installing. Refer to → Brake System; Rep. Gr.45; Sensors; Brake Lamp Switch, Removing and Installing.

Engine Temperature Control Sensor -G694- Component Location

• -1- under the intake manifold lower section, cylinder bank 1 (right)

Removing and installing. Refer to → Chapter "Engine Temperature Control Temperature Sensor -G694-, Removing and Installing".

Coolant Recirculation Pump -V50- Component Location

• On the top of the transmission housing

  3 - Coolant Recirculation Pump -V50-

Removing and installing. Refer to → Chapter "Coolant Recirculation Pump -V50-, Removing and Installing".

Charge Air Cooling Pump -V188- Component Location

• On the left front longitudinal member.

  4 - Charge Air Cooling Pump -V188- Connector

Removing and installing. Refer to → Chapter "Charge Air Cooling Pump -V188-, Removing and Installing".

Transmission Fluid Cooling Valve -N509- Component Location

• On the top of the transmission housing

  2 - Transmission Fluid Cooling Valve -N509-

Removing and installing. Refer to → Chapter "Coolant Valves, Removing and Installing".

Air Filter Bypass Door Valve -N275- Component Location

• Right front on the air filter housing.

  2 - Air Filter Bypass Door Valve -N275- Connector

Installed Location, Engine from Above

1 - Ignition Coil With Power Output Stage for Cylinder Bank 1

• Ignition Coil 1 with Power Output Stage -N70-
• Ignition Coil 2 with Power Output Stage -N127-
• Ignition Coil 3 with Power Output Stage -N291-

• Overview. Refer to → Chapter "Overview - Ignition System".

2 - Exhaust Camshaft Adjustment Valve 1 -N318-

• Overview. Refer to → Chapter "Overview - Valvetrain".

3 - Camshaft Adjustment Valve 1 -N205-

• Overview. Refer to → Chapter "Overview - Valvetrain".

4 - FSI Fuel Injector

• Cylinder 1 Fuel Injector -N30-
• Cylinder 2 Fuel Injector -N31-
• Cylinder 3 Fuel Injector -N32-

• Overview. Refer to → Chapter "Overview - Fuel Rail with Fuel Injectors".

5 - Knock Sensor 1 -G61-

• Overview. Refer to → Chapter "Overview - Ignition System".

6 - Knock Sensor 2 -G66-

• Overview. Refer to → Chapter "Overview - Ignition System".

7 - Oil Pressure Switch -F22-

• Overview. Refer to → Chapter "Overview - Oil Filter".

8 - Reduced Oil Pressure Switch -F378-

• Overview. Refer to → Chapter "Overview - Oil Filter".

9 - FSI Fuel Injector

• Cylinder 4 Fuel Injector -N33-
• Cylinder 5 Fuel Injector -N83-
• Cylinder 6 Fuel Injector -N84-

• Overview. Refer to → Chapter "Overview - Fuel Rail with Fuel Injectors".

10 - Camshaft Adjustment Valve 2 -N208-

• Overview. Refer to → Chapter "Overview - Valvetrain".

11 - Exhaust Camshaft Adjustment Valve 2 -N319-

• Overview. Refer to → Chapter "Overview - Valvetrain".

12 - Ignition Coil With Power Output Stage for Cylinder Bank 2

• Ignition Coil 4 with Power Output Stage -N292-
• Ignition Coil 5 with Power Output Stage -N323-
• Ignition Coil 6 with Power Output Stage -N324-

• Overview. Refer to → Chapter "Overview - Ignition System".

13 - MPI Fuel Injector

• Cylinder 4 Fuel Injector 2 -N535-
• Cylinder 5 Fuel Injector 2 -N536-
• Cylinder 6 Fuel Injector 2 -N537-
• Overview. Refer to → Chapter "Overview - Intake Manifold Lower Section with Fuel Rail".

14 - Camshaft Position Sensor 2 -G163-

• Overview. Refer to → Chapter "Overview - Ignition System".

15 - Fuel Pressure Sensor -G247-

• Overview. Refer to → Chapter "Overview - Fuel Rail with Fuel Injectors".

16 - Low Fuel Pressure Sensor -G410-

17 - Engine Temperature Control Sensor -G694-

• Component location. Refer to → Fig. " Engine Temperature Control Sensor -G694- Component Location".

18 - Engine Coolant Temperature Sensor -G62-

• Overview. Refer to → Chapter "Overview - Engine Coolant Temperature Sensor".

19 - Camshaft Position Sensor -G40-

• Overview. Refer to → Chapter "Overview - Ignition System".

20 - MPI Fuel Injector

• Cylinder 1 Fuel Injector 2 -N532-
• Cylinder 2 Fuel Injector 2 -N533-
• Cylinder 3 Fuel Injector 2 -N534-
• Overview. Refer to → Chapter "Overview - Intake Manifold Lower Section with Fuel Rail".

Installed Location, Engine from Left

1 - Oil Pressure Regulation Valve -N428-

• Overview. Refer to → Chapter "Overview - Oil Pressure Switch/Oil Pressure Regulation Valve".

2 - Camshaft Position Sensor 4 -G301-

• Overview. Refer to → Chapter "Overview - Ignition System".

3 - Oxygen Sensor 2 after Catalytic Converter -G131-

• With Heater for Oxygen Sensor 2 after Catalytic Converter -Z30-
• Overview. Refer to → Chapter "Overview - Heated Oxygen Sensor".

4 - Heated Oxygen Sensor 2 -G108-

• With Oxygen Sensor 2 Heater -Z28-
• Overview. Refer to → Chapter "Overview - Heated Oxygen Sensor".

5 - Left Electrohydraulic Engine Mount Solenoid Valve -N144-

Installed Locations, Engine from Right

1 - Engine Speed Sensor -G28-

• Overview. Refer to → Chapter "Overview - Ignition System".

2 - Heated Oxygen Sensor -G39-

• With Oxygen Sensor Heater -Z19-
• Overview. Refer to → Chapter "Overview - Heated Oxygen Sensor".

3 - Oxygen Sensor after Catalytic Converter -G130-

• With Heater For Oxygen Sensor 1 after Catalytic Converter -Z30-
• Overview. Refer to → Chapter "Overview - Heated Oxygen Sensor".

4 - Camshaft Position Sensor 3 -G300-

• Overview. Refer to → Chapter "Overview - Ignition System".

5 - Fuel Metering Valve -N290-

• Overview. Refer to → Chapter "Overview - High Pressure Pump".

6 - Oil Level Thermal Sensor -G266-

• Overview. Refer to → Chapter "Overview - Oil Pan/Oil Pump".

7 - Right Electrohydraulic Engine Mount Solenoid Valve -N145-

Supercharger Component Location

1 - Compressor Magnetic Clutch -N421-

• Refer to → Chapter "Overview - Supercharger"

2 - Charge Air Pressure Sensor -G31-/Intake Manifold Temperature Sensor -G72-

• Refer to → Chapter "Overview - Supercharger"

3 - Throttle Valve Control Module -J338-

• With EPC Throttle Drive -G186-, EPC Throttle Drive Angle Sensor 1 -G187- and EPC Throttle Drive Angle Sensor 2 -G188-
• Overview. Refer to → Chapter "Overview - Supercharger".

4 - Cooling Circuit Solenoid Valve -N492-

5 - Cylinder Head Coolant Valve -N489-

6 - Intake Manifold Runner Control Valve -N316-

7 - Secondary Air Injection Solenoid Valve -N112-

8 - Intake Air Temperature Sensor -G42-/Manifold Absolute Pressure Sensor -G71-

• Overview. Refer to → Chapter "Overview - Supercharger".

9 - Regulating Flap Control Unit -J808-

• With Regulating Flap Adjustment Motor -V380- and Regulating Flap Position Sensor -G584-

10 - Charge Air Pressure Sensor 2 -G447-/Intake Manifold Temperature Sensor 2 -G430-

• Overview. Refer to → Chapter "Overview - Supercharger".

11 - Turbocharger Speed Sensor 1 -G688-

Fuel System Leak Test

- Let the engine run a few minutes at a moderate RPM.

- Switch off the ignition.

- Check the entire fuel system for leaks.

- Replace the affected component if there are leaks in spite of correct tightening specifications.

- Perform a road test and fully depress the accelerator pedal at least one time.

- Check the high pressure area again for leaks.

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