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Home >> Audi >> 2008 >> S6 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Fuel Delivery >> 5.2L - Fuel System - Engine Code(S): BXA >> 24 - Fuel Injection System >> Description and Operation >> Component Locations Overview

Component Locations Overview

Engine compartment, right 

Fig 1: Engine Component Locations (Right)
GW00022427Courtesy of AUDI OF AMERICA, LLC
  1. Engine control module (ECM) 2 -J624-
  2. Engine Control Module - J623-
  3. Camshaft Adjustment Valve 1 (exhaust) -N318-
    • Component location. See Fig 10.
  4. Camshaft Adjustment Valve 1 -N205-
    • Component location. See Fig 10.
  5. Low Fuel Pressure Sensor -G410-
    • Component location. See Fig 9.
  6. Engine Coolant Temperature (ECT) Sensor -G62-
    • Component location. See Fig 9.
  7. Throttle valve control module -J338-
    • After replacing, adapt in "Guided Functions" operating mode under "Adapting throttle valve control module"
  8. Components on front of engine
    • See Fig 8.
    • Intake Manifold Runner Position Sensor -G336-
    • Variable Intake Manifold Runner Motor -V183-
    • Intake Flap Motor -V157-
    • Secondary air injection (AIR) solenoid valve -N112-
    • Intake Manifold Runner Position Sensor 2 -G512-
    • Oil pressure switch -F1-
    • Knock Sensor (KS) 4 -G199-
    • Knock Sensor (KS) 3 -G198-
    • Knock Sensor (KS) 1 -G61-
    • Knock Sensor (KS) 2 -G66-
  9. Knock Sensor (KS) 2 -G66-
    • Component location. See Fig 9.
    • Electrical harness connector. See Fig 8.
    • 22 Nm
  10. Knock Sensor (KS) 1 -G61-
    • Component location. See Fig 9.
    • Electrical harness connector. See Fig 8.
    • 22 Nm
  11. High pressure pump
    • With Fuel Metering Valve -N290-
  12. Camshaft Position (CMP) sensor -G40-
    • Component location. See Fig 10.
  13. Fuel Metering Valve -N290- electrical connector
    • Common component with high pressure pump
  14. Ignition coils, 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-
    • Ignition Coil 4 with Power Output Stage -N292-
    • Removing and installing, refer to Ignition Coils with Power Output Stages .
  15. Camshaft position (CMP) sensor 3 -G300-
    • Component location. See Fig 10.
  16. Mass Air Flow (MAF) Sensor -G70- / Intake Air Temperature (IAT) Sensor -G42-

Engine compartment, left 

Fig 2: Engine Component Locations (Right)
GW00022428Courtesy of AUDI OF AMERICA, LLC
  1. Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-
  2. Throttle Valve Control Module 2 -J544-
    • After replacing, adapt in "Guided Functions" operating mode under "Adapting throttle valve control module"
  3. Camshaft Adjustment Valve 2 -N208-
    • Component location. See Fig 11.
  4. Camshaft Adjustment Valve 2 (exhaust) -N319-
    • Component location See Fig 11.
  5. Mass Air Flow (MAF) Sensor 2 -G246-
  6. Secondary Air Injection (AIR) Pump Motor -V101-
  7. Camshaft position (CMP) sensor 4 -G301-
    • attached to outside of cylinder head
    • Component location. See Fig 12.
  8. Ignition coils, Cylinder bank 2
    • Ignition Coil 5 with Power Output Stage -N323-
    • Ignition Coil 6 with Power Output Stage -N324-
    • Ignition Coil 7 with Power Output Stage -N325-
    • Ignition Coil 8 with Power Output Stage -N326-
    • Removing and installing, refer to Ignition Coils with Power Output Stages .
  9. Fuel Metering Valve 2 -N402- electrical connector
    • Common component with high pressure pump
  10. Camshaft position (CMP) sensor 2 -G163-
    • Component location. See Fig 11.
  11. High pressure pump
    • With Fuel Metering Valve 2 -N402-
  12. Components on front of engine
    • page 10
    • Intake Manifold Runner Position Sensor -G336-
    • Variable Intake Manifold Runner Motor -V183-
    • Intake Flap Motor -V157-
    • Secondary air injection (AIR) solenoid valve -N112-
    • Intake Manifold Runner Position Sensor 2 -G512-
    • Oil pressure switch -F1-
    • Knock Sensor (KS) 4 -G199-
    • Knock Sensor (KS) 3 -G198-
    • Knock Sensor (KS) 1 -G61-
    • Knock Sensor (KS) 2 -G66-
  13. Fuel Pressure Sensor -G247-
    • Component location. See Fig 9.
  14. Knock Sensor (KS) 3 -G198-
    • Component location See Fig 9.
    • Electrical harness connector. See Fig 8.
    • 22 Nm
  15. Knock Sensor (KS) 4 -G199
    • Component location See Fig 9.
    • Electrical harness connector. See Fig 8.
    • 22 Nm
    1. Engine speed (RPM) sensor -G28-
    2. Throttle Position (TP) Sensor -G79- / Accelerator Pedal Position Sensor 2 -G185-
    3. Brake light switch -F- / Brake pedal switch -F47-
    4. Clutch Pedal Switch -F36- and Clutch Position Sensor -G476-
    5. Heated Oxygen Sensor (HO2S) -G39- before catalytic converter with Oxygen Sensor (O2S) Heater -Z19-
    6. Heated Oxygen Sensor (HO2S) 2 -G108- before catalytic converter with Oxygen Sensor (O2S) 2 Heater - Z28-
    7. Heated Oxygen Sensor (HO2S) 3 -G285- before catalytic converter with Oxygen Sensor (O2S) 3 Heater - Z62-
    8. Heated Oxygen Sensor (HO2S) 4 -G286- before catalytic converter with Oxygen Sensor (O2S) 4 Heater - Z63-
    9. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- with Oxygen Sensor (O2S) 1 (behind Three Way Catalytic Converter (TWC)) Heater -Z29-
    10. Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131- with Oxygen Sensor (O2S) 2 (behind Three Way Catalytic Converter (TWC)) Heater -Z30-
    11. Oxygen Sensor (O2S) 3 Behind Three Way Catalytic Converter (TWC) -G287- with Oxygen Sensor (O2S) 3 (behind Three Way Catalytic Converter (TWC)) Heater -Z64-
    12. Oxygen Sensor (O2S) 4 Behind Three Way Catalytic Converter (TWC) -G288- with Oxygen Sensor (O2S) 4 (behind Three Way Catalytic Converter (TWC)) Heater -Z65-

Engine control module installation locations 

  1. Shows Engine Control Module (ECM) 2 -J624- (slave)
  2. Shows Engine Control Module (ECM) -J623- (master)
Fig 3: Locating Engine Control Modules
GWWA10-10526Courtesy of AUDI OF AMERICA, LLC

Component location Throttle Position (TP) Sensor -G79- / Sender 2 for accelerator pedal position -G185-

In accelerator pedal module -arrow-.

Fig 4: Location Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185
GW00008742Courtesy of AUDI OF AMERICA, LLC
NOTE: The Throttle Position (TP) Sensor -G79- and Accelerator Pedal Position Sensor 2 -G185- are integrated into the accelerator pedal module and cannot be replaced separately.

Component location Brake Light Switch -F- / Brake Pedal Switch -F47-, Clutch Pedal Switch -F36- and Clutch Position Sensor - G476-

On pedal bracket.

Fig 5: Component Location Brake Light Switch F/Brake Pedal Switch F47 , Clutch Pedal Switch F36 And Clutch Position Sensor G476
GW00022420Courtesy of AUDI OF AMERICA, LLC
  1. Clutch Position Sensor -G476-
  2. Clutch pedal switch -F36-
  3. Brake light switch -F- / Brake pedal switch -F47-

Installation Locations 

  1. Low Fuel Pressure Sensor -G410-
  2. Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-
  3. Throttle Valve Control Module 2 -J544-
  4. Throttle valve control module -J338-
Fig 6: Identifying Throttle Valve Component Locations
GWWA24-10284Courtesy of AUDI OF AMERICA, LLC

Perform an "adaptation" after replacing the throttle valve control module, see "Guided Functions" in Vehicle Diagnosis, Testing and Information System -VAS 5051B-.

Engine from behind 

  1. Low Fuel Pressure Sensor -G410-
  2. Engine Coolant Temperature (ECT) Sensor -G62-, removing and installing .
GWWA24-10285Courtesy of AUDI OF AMERICA, LLC

Engine Speed (RPM) Sensor -G28- -arrow- 

Fig 7: Disconnecting Electrical Connector On Engine Speed (RPM) Sensor G28
GWWA24-10211Courtesy of AUDI OF AMERICA, LLC

Engine viewed from front 

Fig 8: Disconnecting Intake Flap Motor Electrical Harness Connector
GWWA24-10286Courtesy of AUDI OF AMERICA, LLC
  1. Intake Manifold Runner Position Sensor -G336-
  2. Variable Intake Manifold Runner Motor -V183-
  3. Intake Flap Motor -V157-
  4. Secondary air injection (AIR) solenoid valve -N112-
  5. Intake Manifold Runner Position Sensor 2 -G512-
  6. Oil Pressure Switch -F1-, removing and installing .
  7. Knock sensor 4 -G199- (blue connector)
  8. Knock Sensor 3 -G198- (white connector)
  9. Knock Sensor (KS) 1 -G61- (orange connector)
  10. Knock Sensor (KS) 2 -G66- (gray connector)
NOTE: Intake manifold must be removed in order to remove knock sensors. Intake manifold, removing and installing. Refer to Intake Manifold .

Location inside cylinder head 

Fig 9: Disconnecting Fuel Pressure Sensor G247 Electrical Harness Connector
GWWA24-10324Courtesy of AUDI OF AMERICA, LLC
  1. Engine Coolant Temperature (ECT) Sensor -G62-
  2. Knock Sensor (KS) 4 -G199-
  3. Knock Sensor (KS) 3 -G198-
  4. Fuel Pressure Sensor -G247-
  5. Knock Sensor (KS) 1 -G61-
  6. Knock Sensor (KS) 2 -G66-
  7. Camshaft Adjustment Valve 1 -N205-
  8. Low Fuel Pressure Sensor -G410-
NOTE: Intake manifold must be removed to remove Fuel Pressure Sensor -G247- or knock sensors. Refer to Intake Manifold .

Location on right cylinder bank 1 

  1. Camshaft Adjustment Valve 1 (exhaust) -N318-
  2. Camshaft Adjustment Valve 1 -N205-
  3. Camshaft Position (CMP) sensor -G40-
  4. Camshaft position (CMP) sensor 3 -G300-
Fig 10: Disconnecting Camshaft Position (CMP) Sensor G40 Electrical Harness Connector
GWWA15-10371Courtesy of AUDI OF AMERICA, LLC

Location on left cylinder bank 2 

  1. Camshaft position (CMP) sensor 4 -G301-
  2. Camshaft position (CMP) sensor 2 -G163-
  3. Camshaft Adjustment Valve 2 -N208-
  4. Camshaft Adjustment Valve 2 (exhaust) -N319-
Fig 11: Disconnecting Camshaft Position (CMP) Sensor 2 G163 Electrical Harness Connector
GWWA15-10372Courtesy of AUDI OF AMERICA, LLC

Oxygen sensor electrical connectors (on vehicle floor) 

  1. Heated Oxygen Sensor (HO2S) -G39- (in front of catalytic converter) black connection
  2. Heated Oxygen Sensor (HO2S) 3 -G285- (in front of catalytic converter) brown connector
GWWA24-10208Courtesy of AUDI OF AMERICA, LLC

Oxygen sensor electrical connectors (at top of transmission) 

GWWA24-10210Courtesy of AUDI OF AMERICA, LLC
  1. Gray Oxygen Sensor (O2S) 4 Behind Three Way Catalytic Converter (TWC) -G288-
  2. Black Oxygen Sensor (O2S) 3 Behind Three Way Catalytic Converter (TWC) -G287-
  3. Brown Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
  4. Brown Heated Oxygen Sensor (HO2S) 4 -G286- (in front of catalytic converter)
  5. Black Heated Oxygen Sensor (HO2S) 2 -G108- (in front of catalytic converter)
  6. Black Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131-

Secondary Air Injection (AIR) Pump Motor -V101- (below left longmember) 

Removing and installing. Refer to Secondary Air Injection (AIR) System .

Fig 12: Secondary Air Injection (Air) Pump Motor V101 (Below Left Longmember)
GW00022438Courtesy of AUDI OF AMERICA, LLC
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