Fuel Injection System, Component Location Overview, Vehicles With Engine Code CGQB: Notes

Engine Compartment 

Courtesy of AUDI OF AMERICA, LLC

1. Mass Airflow Sensor -G70-
   • Removing and installing, refer to Mass Airflow Sensor -G70-, REMOVING AND INSTALLING .
2. Camshaft Position Sensor -G40-
   • Component location
   • Overview, refer to OVERVIEW - GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR .
3. EGR Temperature Sensor - G98- connector
   • Component location, refer to
   • Removing and installing, refer to appropriate service information. .
4. Connector
   • for the Map Controlled Engine Cooling Thermostat - F265-, Fuel Metering Valve -N290- and Map Controlled Engine Cooling Thermostat -V338-
   • Component location appropriate service information.
5. Restrictor
   • in the fuel return line
   • Component location. Refer to appropriate service information.
6. Differential Pressure Sensor -G505-
   • for the Exhaust Gas Temperature Sensor 3 - G495- connector
   • Component location appropriate service information.
7. Fuel Temperature Sensor -G81-
8. Structure Borne Sound Control Module -J869-
9. Turbocharger Control Module 1 -J724-
   • Exhaust Gas Temperature Sensor 1 -G235-
   • Charge Air Pressure Sensor 2 -G447-
   • Component location. Refer appropriate service information.
   • Removing and installing, refer to Turbocharger Control Module 1 -J724-, REMOVING AND INSTALLING [For engine(s) CPNB] .
10. EGR Motor -V338-
    • Removing and installing, refer to appropriate service information. .
11. Control Valve Position Sensor -G584-
    • Component location. Refer to appropriate service information.
12. Heated Oxygen Sensor -G39- with Oxygen Sensor Heater -Z19-
    • Component location. Refer to appropriate service information.
    • Overview, refer to OVERVIEW - HEATED OXYGEN SENSORS AND EXHAUST GAS TEMPERATURE SENSORS .
13. Fuel Pressure Sensor -G247-
    • Removing and installing, refer to Fuel Pressure Sensor -G247-, REMOVING AND INSTALLING .
    • Tightening specification, refer to appropriate service information.
14. Heated Oxygen Sensor -G39- connector
15. Engine Control Module -J623-
    • Component location
    • Removing and installing, refer to Engine Control Module -J623-, REMOVING AND INSTALLING .
16. Charge Air Pressure Sensor -G31- / Intake Air Temperature Sensor -G42-
    • Component location. Refer to appropriate service information.
17. Throttle Valve Control Module -J338-
    • Overview, refer to OVERVIEW - INTAKE MANIFOLD .
18. Injector
    • Cylinder bank 2
    • Removing and installing, refer to FUEL INJECTORS, REMOVING AND INSTALLING .
19. Turbine Switch-Over Valve -N529-
    • For checking, refer to appropriate service information. .
20. Engine Temperature Control Sensor -G694-
    • Component location, Refer to Engine Temperature Control Sensor -G694-:
21. EGR Temperature Sensor -G98-
    • Removing and installing, refer to appropriate service information .
22. Intake Flap Motor -V157-
    • Overview, refer to OVERVIEW - INTAKE MANIFOLD .
23. EGR Cooler Switch-Over Valve -N345-
24. Map Controlled Engine Cooling Thermostat -F265-
    • Component location
    • Removing and installing, refer to Map Controlled Engine Cooling Thermostat -F265-, REMOVING AND INSTALLING .
25. Cylinder Head Coolant Valve -N489-
26. Wastegate Bypass Regulator Valve -N75-
27. Reduced Oil Pressure Switch -F378-
    • Removing and installing, refer to Oil Pressure Switch -F22- / Reduced Oil Pressure Switch -F378-, REMOVING AND INSTALLING .
28. Fuel Pressure Regulator Valve -N276-
    • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
29. Injector
    • Cylinder bank 1
    • Removing and installing, refer to FUEL INJECTORS, REMOVING AND INSTALLING .

Engine Top 

Courtesy of AUDI OF AMERICA, LLC

1. Fuel Pressure Regulator Valve -N276-
   • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
2. Cylinder 1 Fuel Injector -N30-
   • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
3. Glow Plug 1 -Q10-
   • Overview, refer to OVERVIEW - GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR .
4. Cylinder 2 Fuel Injector -N31-
   • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
5. Camshaft Position Sensor -G40-
   • Component location
   • Overview, refer to OVERVIEW - GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR .
6. Glow Plug 2 -Q11-
   • Overview, refer to OVERVIEW - GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR .
7. Cylinder 3 Fuel Injector -N32-
   • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
8. Glow Plug 3 -Q12-
   • Overview, refer to OVERVIEW - GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR .
9. Fuel Temperature Sensor -G81-
10. Exhaust Gas Temperature Sensor 1 -G235-
    • Component location
    • Removing and installing, refer to appropriate service information. .
11. Fuel Metering Valve -N290-
    • Component location, Refer to appropriate service information.
12. Charge Air Pressure Sensor 2 -G447-
    • Component location. Refer to COMPONENT LOCATIONS ON THE TURBOCHARGER 
13. Turbocharger Control Module 1 -J724-
    • At turbocharger
    • Removing and installing, refer to Turbocharger Control Module 1 -J724-, REMOVING AND INSTALLING, VEHICLES WITH A TURBOCHARGER [For engine(s) CPNB] .
14. EGR Motor -V338-
    • Removing and installing, refer to appropriate service information. .
15. Glow Plug 6 -Q15-
    • Overview, refer to OVERVIEW - GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR .
16. Cylinder 6 Fuel Injector -N84-
    • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
17. Glow Plug 5 -Q14-
    • Overview, refer to OVERVIEW - GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR .
18. Cylinder 5 Fuel Injector -N83-
    • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
19. Heated Oxygen Sensor -G39- connector
20. Fuel Pressure Sensor -G247-
    • Component location, Refer to Removing [Go To Graphic] 
    • Removing and installing, refer to Fuel Pressure Sensor -G247-, REMOVING AND INSTALLING .
21. Cylinder 4 Fuel Injector -N33-
    • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
22. Glow Plug 4 -Q13-
    • Overview, refer to OVERVIEW - GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR .
23. Engine Coolant Temperature Sensor -G62-
    • Removing and installing, refer to Engine Coolant Temperature Sensor -G62-, REMOVING AND INSTALLING [For engine(s) CPNB] .
24. EGR Temperature Sensor -G98-
    • Removing and installing, refer to appropriate service information. .
25. EGR Cooler Switch-Over Valve -N345-
26. Wastegate Bypass Regulator Valve -N75- connector
27. Connector for the Cylinder Head Coolant Valve -N489-
28. Wastegate Bypass Regulator Valve -N75-
29. Cylinder Head Coolant Valve -N489-
30. Restrictor in the Fuel Return Line
    • Checking, refer to FUEL RETURN LINE RESTRICTOR, CHECKING .