Component Location Overview - Injection System

Component Location Overview - Engine Compartment

Fig 1: Exploded View Of Fuel Injection System Components

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1. Cylinder Head Coolant Valve -N489-
   • Component location. Refer to Fig 4.
2. Fuel Injectors
   • Cylinder 1 Fuel Injector -N30-
   • Cylinder 2 Fuel Injector -N31-
   • Cylinder 3 Fuel Injector -N32-
   • Cylinder 4 Fuel Injector -N33-
   • Overview. Refer to OVERVIEW - FUEL INJECTORS .
3. Differential Pressure Sensor -G505-
   • Installed depending on the emissions standard
   • Overview. Refer to OVERVIEW - HEATED OXYGEN SENSOR .
4. Exhaust Pressure Sensor 1 -G450-
   • Overview. Refer to OVERVIEW - HEATED OXYGEN SENSOR .
5. Charge Air Pressure Actuator Position Sensor -G581-
6. Engine Coolant Temperature Sensor -G62-
   • Overview. Refer to OVERVIEW - ENGINE COOLANT TEMPERATURE SENSOR .
7. Wastegate Bypass Regulator Valve -N75-
   • Wastegate Bypass Regulator Valve -N75- Connector. Refer to Fig 3.
8. Mass Airflow Sensor -G70-
   • Component location. Refer to Fig 3.
   • Overview. Refer to OVERVIEW - AIR FILTER HOUSING .
9. Engine Control Module -J623-
   • Removing and installing. Refer to ENGINE CONTROL MODULE .
10. Charge Air Pressure Sensor -G31-
    • Overview. Refer to OVERVIEW - CHARGE AIR SYSTEM .
11. Charge Air Temperature Sensor In Front Of Charge Air Cooler -G810-
    • Overview. Refer to OVERVIEW - INTAKE MANIFOLD .
12. Fuel Pressure Regulator Valve -N276-
    • Overview. Refer to OVERVIEW - HIGH PRESSURE RESERVOIR (RAIL) .
13. Charge Air Temperature Sensor after Charge Air Cooler -G811-
    • Overview. Refer to OVERVIEW - INTAKE MANIFOLD .
14. Camshaft Position Sensor -G40-
    • Camshaft position sensor
    • Overview. Refer to OVERVIEW - GLOW PLUG SYSTEM .
15. Glow Plugs
    • Glow Plug 1 -Q10-
    • Glow Plug 2 -Q11-
    • Glow Plug 3 -Q12- with the Cylinder 3 Combustion Chamber Pressure Sensor -G679-
    • Glow Plug 4 -Q13-
    • Depending on the vehicle the glow plug are integrated in the combustion chamber pressure sensor.
      • Glow Plug 1 -Q10- with Cylinder 1 Combustion Chamber Pressure Sensor -G677-
      • Glow Plug 2 -Q11- with Cylinder 2 Combustion Chamber Pressure Sensor -G678-
      • Glow Plug 3 -Q12- with the Cylinder 3 Combustion Chamber Pressure Sensor -G679-
      • Glow Plug 4 -Q13- with the Cylinder 4 Combustion Chamber Pressure Sensor -G680-
    • Overview. Refer to OVERVIEW - GLOW PLUG SYSTEM .
16. Fuel Temperature Sensor
    • Depending on the vehicle different sensors can be installed.
      • Fuel Temperature Sensor -G81-
      • Fuel Low Pressure Temperature and Pressure Sensor -GX20-
    • Refer to Fuel Temperature Sensor -G81-, REMOVING AND INSTALLING 
    • Refer to Fuel Low Pressure Temperature and Pressure Sensor -GX20-, REMOVING AND INSTALLING 
17. Fuel Pressure Sensor -G247-
    • Overview. Refer to OVERVIEW - HIGH PRESSURE RESERVOIR (RAIL) .
18. High Pressure Pump
    • With Fuel Metering Valve -N290- (not open)
    • Overview. Refer to OVERVIEW - HIGH PRESSURE PUMP .

Fig 2: Accelerator Pedal Module Components Location

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Contains: 

• Accelerator Pedal Position Sensor -G79-
• Accelerator Pedal Position Sensor 2 -G185-

Fig 3: Temperature Sensor G648, G448 And Oxygen Sensor Connectors

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1. Exhaust Gas Temperature Sensor 4 -G648-
2. Exhaust Gas Temperature Sensor 2 -G448-
3. Oxygen Sensor 1 Before Catalytic Converter -GX10-

Installation position of the connector -1- for the Exhaust Gas Temperature Sensor 3 -G495- :

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-- Guide the lines out of the brackets -2- on the plenum chamber bulkhead and turbocharger.

Installation position of connector for Exhaust Gas Temperature Sensor 1 -G235-

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1. Connector
2. Exhaust Gas Temperature Sensor 1 -G235-

Installation position of connector for EGR Temperature Sensor -G98- -1- :

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

• In the front exhaust pipe.

Removing and installing. Refer to Exhaust Door Control Unit -J883-, REMOVING AND INSTALLING .

Fig 4: Cylinder Head Coolant Valve -N489-

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• -Item 1- at the top of the coolant pump

Removing and installing. Refer to Cylinder Head Coolant Valve -N489-, REMOVING AND INSTALLING .

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• On the right connection on the radiator

Component Location Overview - Engine From Front 

Fig 5: Exploded View Of Engine Components (Front Side Of Engine)

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Oil Pressure Regulation Valve -N428-
   • Removing and installing. Refer to Oil Pressure Regulation Valve -N428-, REMOVING AND INSTALLING .
2. EGR Valve 1 -GX5-
   • With EGR Motor -V338-
   • With the EGR Potentiometer -G212-
   • Overview. Refer to OVERVIEW - EXHAUST GAS RECIRCULATION (EGR) .
3. Camshaft Adjustment Valve 1 -N205-
   • Overview. Refer to OVERVIEW - VALVETRAIN .
4. Throttle Valve Control Module -J338-
   • With Throttle Position Sensor -G69-
   • Overview. Refer to OVERVIEW - INTAKE MANIFOLD .
5. Reduced Oil Pressure Switch -F378-
   • Overview. Refer to OVERVIEW - OIL FILTER HOUSING/OIL PRESSURE SWITCH .
6. Oil Pressure Switch -F1-
   • Overview. Refer to OVERVIEW - OIL FILTER HOUSING/OIL PRESSURE SWITCH .
7. Engine Speed Sensor -G28-
   • Overview. Refer to OVERVIEW - GLOW PLUG SYSTEM .
8. Charge Air Cooling Pump -V188-
   • Overview. Refer to OVERVIEW - ELECTRIC COOLANT PUMP .

Component Location Overview - Engine From Rear 

Fig 6: Exploded View Of Engine Components (Engine From Rear)

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Oil Level Thermal Sensor -G266-
   • Overview. Refer to OVERVIEW - OIL PAN/OIL PUMP .
2. EGR Valve 2 -GX6-
   • Overview. Refer to OVERVIEW - EXHAUST GAS RECIRCULATION (EGR) .
3. EGR Temperature Sensor -G98-
   • Removing and installing. Refer to EGR Temperature Sensor -G98-, REMOVING AND INSTALLING .
4. Exhaust Gas Temperature Sensor 1 -G235-
   • Overview. Refer to OVERVIEW - EXHAUST TEMPERATURE REGULATION .
5. NOx Sensor -G295-
   • Overview. Refer to OVERVIEW - HEATED OXYGEN SENSOR .
6. Heated Oxygen Sensor -G39- with Oxygen Sensor Heater -Z19-
   • Overview. Refer to OVERVIEW - HEATED OXYGEN SENSOR .
   • Heated Oxygen Sensor -G39- Connector. Refer to Fig 3.
7. Exhaust Gas Temperature Sensor 3 -G495-
   • Overview. Refer to OVERVIEW - EXHAUST TEMPERATURE REGULATION .
   • Exhaust Gas Temperature Sensor 3 -G495- Connector. Refer to Fig 3.
8. Exhaust Gas Temperature Sensor 2 -G448-
   • Overview. Refer to OVERVIEW - EXHAUST TEMPERATURE REGULATION .
   • Exhaust Gas Temperature Sensor 2 -G448- Connector. Refer to Fig 3.
9. Reducing Agent Injector -N474-
   • Removing and installing. Refer to Reducing Agent Injector -N474-, REMOVING AND INSTALLING .
10. Exhaust Gas Temperature Sensor 4 -G648-
    • Overview. Refer to OVERVIEW - EXHAUST TEMPERATURE REGULATION .
    • Connector for Exhaust Gas Temperature Sensor 4 -G648-. Refer to Fig 3.
11. Heater Support Pump -V488-
    • Overview. Refer to OVERVIEW - ELECTRIC COOLANT PUMP .