Fuel Injection System, Component Location Overview, Vehicles With A Turbocharger

Engine Compartment 

Fig 1: Fuel Injection System, Component Location

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1. Engine Coolant Temperature Sensor on Radiator Outlet -G83-
   • Component location, refer to Fig 13
   • Overview, refer to OVERVIEW - ENGINE COOLANT TEMPERATURE SENSOR .
2. Right Electrohydraulic Engine Mount Solenoid Valve -N145-
   • Integrated in the right engine mount
3. Mass Airflow Sensor -G70-
   • Overview, refer to OVERVIEW - AIR FILTER HOUSING .
4. Differential Pressure Sensor -G505-
   • Component location, refer to Fig 8
   • Overview, refer to OVERVIEW - HEATED OXYGEN SENSOR .
5. Exhaust Gas Temperature Sensor 4 -G648-
   • Overview, refer to OVERVIEW - EXHAUST TEMPERATURE REGULATION .
6. Engine Speed Sensor -G28-
   • Overview, refer to OVERVIEW - GLOW PLUG SYSTEM .
7. Exhaust Gas Temperature Sensor 1 -G235-
   • Overview, refer to OVERVIEW - EXHAUST TEMPERATURE REGULATION .
8. Exhaust Gas Temperature Sensor 3 -G495-
   • Overview, refer to OVERVIEW - EXHAUST TEMPERATURE REGULATION .
9. Brake Booster Pressure Sensor -G294-
10. Accelerator Pedal Position Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185-
    • Component location, refer to Fig 5
11. Instrument cluster with Instrument Cluster Control Module - J285-
    • Removing and installing, refer to INSTRUMENT CLUSTER WITH INSTRUMENT CLUSTER CONTROL MODULE -J285- .
12. Brake Lamp Switch -F-
    • Component location, refer to Fig 6
13. Engine Control Module -J623-
    • Component location, refer to Fig 4
    • Removing and installing, refer to ENGINE CONTROL MODULE -J623-, REMOVING AND INSTALLING .
14. Heated Oxygen Sensor -G39- with Oxygen Sensor Heater -Z19-
    • Overview, refer to OVERVIEW - HEATED OXYGEN SENSOR .
15. Left Electrohydraulic Engine Mount Solenoid Valve -N144-
    • Integrated in the left engine mount
16. Charge Air Pressure Sensor -G31- / Intake Air Temperature Sensor -G42-
    • Component location, refer to Fig 11

Engine Top 

Fig 2: Fuel Injection System Component Location

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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 SYSTEM .
4. Cylinder 2 Fuel Injector -N31-
   • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
5. Camshaft Position Sensor -G40-
   • Component location, refer to Fig 9
   • Overview, refer to OVERVIEW - GLOW PLUG SYSTEM .
6. Glow Plug 2 -Q11-
   • Overview, refer to OVERVIEW - GLOW PLUG SYSTEM .
7. Cylinder 3 Fuel Injector -N32-
   • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
8. Glow Plug 3 -Q12-
   • Overview, refer to OVERVIEW - GLOW PLUG SYSTEM .
9. Fuel Temperature Sensor -G81-
10. Turbocharger Control Module 1 -J724-
    • At turbocharger
    • Overview, refer to OVERVIEW - TURBOCHARGER, VEHICLES WITH TURBOCHARGER .
11. Fuel Metering Valve -N290-
    • Component location, refer to Fig 10
12. EGR Motor -V338-
    • Overview, refer to OVERVIEW - EXHAUST GAS RECIRCULATION .
13. Fuel Pressure Sensor -G247-
    • Removing and installing, refer to FUEL PRESSURE SENSOR -G247-, REMOVING AND INSTALLING .
14. Glow Plug 6 -Q15-
    • Overview, refer to OVERVIEW - GLOW PLUG SYSTEM .
15. Cylinder 6 Fuel Injector -N84-
    • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
16. Glow Plug 5 -Q14-
    • Overview, refer to OVERVIEW - GLOW PLUG SYSTEM .
17. Cylinder 5 Fuel Injector -N83-
    • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
18. Glow Plug 4 -Q13-
    • Overview, refer to OVERVIEW - GLOW PLUG SYSTEM .
19. Cylinder 4 Fuel Injector -N33-
    • Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
20. Engine Coolant Temperature Sensor -G62-
    • Overview, refer to OVERVIEW - ENGINE COOLANT TEMPERATURE SENSOR .
21. EGR Temperature Sensor -G98-
    • Overview, refer to OVERVIEW - EXHAUST GAS RECIRCULATION .
22. Cylinder Head Coolant Valve -N489-

Engine Front 

Fig 3: Engine Front Replacement Components

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1. 1 -

   Oil Level Thermal Sensor -G266-

   • Overview, refer to OVERVIEW - OIL PAN/OIL PUMP .
2. Map Controlled Engine Cooling Thermostat -F265-
   • Integrated in the oil filter housing; cannot be replaced separately
3. Oil Temperature Sensor 2 -G664-
   • Component location, refer to Fig 14
   • Overview, refer to OVERVIEW - BELT PULLEY SIDE SEALING FLANGE .
4. Oil Pressure Switch -F22-
   • Overview, refer to OVERVIEW - OIL FILTER HOUSING/OIL PRESSURE SWITCH .
5. Reduced Oil Pressure Switch -F378-
   • Overview, refer to OVERVIEW - OIL FILTER HOUSING/OIL PRESSURE SWITCH .
6. EGR Cooler Switch-Over Valve -N345-
7. Intake Flap Motor -V157-
   • Overview, refer to OVERVIEW - INTAKE MANIFOLD .
8. Throttle Valve Control Module -J338-
   • Overview, refer to OVERVIEW - INTAKE MANIFOLD .
9. Engine Temperature Control Sensor -G694-
   • Component location, refer to Fig 12
10. Oil Pressure Regulation Valve -N428-
    • Component location, refer to Fig 15
    • Overview, refer to OVERVIEW - OIL PAN/OIL PUMP .
11. Fuel Pump Control Module -J538-
    • Component location, refer to Fig 7
12. Reducing Agent Injector -N474-
    • Only installed on vehicles with a selective catalytic reduction system (SCR)
    • Component location, refer to Fig 16
    • Overview, refer to OVERVIEW - REDUCING AGENT DELIVERY LINE .
13. NOx Sensor 2 -G687- with NOx Sensor Control Module 2 -J881-
    • Only installed on vehicles with a selective catalytic reduction system (SCR)
    • Component location for vehicles with engine code CPNB Fig 19
    • Overview, refer to OVERVIEW - HEATED OXYGEN SENSOR, VEHICLES WITH A TURBOCHARGER WITH A SCR-SYSTEM .
14. NOx Sensor -G295- with NOx Sensor Control Module -J583-
    • Only installed on vehicles with a selective catalytic reduction system (SCR)
    • Component location, refer to Fig 18
    • Overview, refer to OVERVIEW - HEATED OXYGEN SENSOR, VEHICLES WITH A TURBOCHARGER WITH A SCR-SYSTEM .
15. Reducing Agent Metering System Control Module -J880-
    • Only installed on vehicles with a selective catalytic reduction system (SCR)
16. Exhaust Gas Temperature Sensor 4 -G648-
    • Only installed on vehicles with a selective catalytic reduction system (SCR)
    • Component location Fig 17
    • Overview, refer to OVERVIEW - EXHAUST TEMPERATURE CONTROL, VEHICLES WITH A TURBOCHARGER WITH A SCR-SYSTEM .
17. Exhaust Gas Temperature Sensor 2 -G448-
    • Depending on the version installed on vehicles with a selective catalytic reduction system (SCR)
    • Component location Fig 17
    • Overview, refer to OVERVIEW - EXHAUST TEMPERATURE CONTROL, VEHICLES WITH A TURBOCHARGER WITH A SCR-SYSTEM .
18. Particulate Sensor -G784-
    • Only installed on vehicles with a selective catalytic reduction system (SCR)
    • Component location Fig 17
    • Overview, refer to OVERVIEW - EXHAUST TEMPERATURE CONTROL, VEHICLES WITH A TURBOCHARGER WITH A SCR-SYSTEM .

Fig 4: Engine Control Module -J623- Component Location

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• Item -1- inside the plenum chamber on the left side.

Fig 5: Accelerator Pedal Position Sensor -G79- and Accelerator Pedal Position Sensor 2 -G185-

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• Inside the accelerator pedal module

Removing and installing, refer to ACCELERATOR PEDAL POSITION SENSORS -G79- / -G185-, REMOVING AND INSTALLING .

Fig 6: Component Location Brake Lamp Switch -F-

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• Inside the footwell at the brake pedal

Removing and Installing, refer to BRAKE LAMP SWITCH -F-, REMOVING AND INSTALLING .

Fig 7: Fuel Pump Control Module -J538- Component Location

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• The Fuel Pump Control Module -J538- -arrow- is level with the bench seat on the right side between the floor panel and the fuel tank.

Removing and installing, refer to FUEL PUMP CONTROL MODULE -J538-, REMOVING AND INSTALLING .

Fig 8: Differential Pressure Sensor - G505- Component Location

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• -Item 2- in the rear and on the right side of the engine.

Fig 9: Camshaft Position Sensor, Bolt And Connector

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• Item -2- on the cylinder head cover on the cylinder bank 1 (right).

Fig 10: Fuel Metering Valve -N290- Component Location

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• Item -2- in the high pressure pump.

Fig 11: Charge Air Pressure Sensor - G31- / Intake Air Temperature Sensor -G42- Component Location

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• Item -2- on left air guide pipe in the engine compartment.

Removing and installing, refer to CHARGE AIR PRESSURE SENSOR -G31- / INTAKE AIR TEMPERATURE SENSOR -G42-, REMOVING AND INSTALLING .

Fig 12: Engine Temperature Control Sensor - G694- Component Location

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• Item -1- on left front cylinder block.

Removing and installing, refer to ENGINE TEMPERATURE CONTROL TEMPERATURE SENSOR -G694-, REMOVING AND INSTALLING .

Fig 13: Engine Coolant Temperature Sensor on Radiator Outlet -G83- Component Location

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Removing and installing, refer to ENGINE COOLANT TEMPERATURE SENSOR ON RADIATOR OUTLET -G83-, REMOVING AND INSTALLING .

Fig 14: Oil Temperature Sensor 2 -G664-

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Fig 15: Oil Pressure Regulation Valve -N428-

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Fig 16: Reducing Agent Injector -N474- for Vehicles with a Selective Catalytic Reduction System

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Fig 17: Component Locations for the Exhaust Gas Temperature Sensors (Only With The Engine Code CPNB)

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1. Exhaust Gas Temperature Sensor 3 -G495-
2. Exhaust Gas Temperature Sensor 2 -G448-
3. NOx Sensor -G295-
4. Heated Oxygen Sensor -G39-
5. Connector for Exhaust Gas Temperature Sensor 2 - G448-
6. Exhaust Gas Temperature Sensor 3 -G495- connector
7. Heated Oxygen Sensor -G39- connector

Fig 18: NOx Sensor Control Module - J583- with NOx Sensor -G295- (Engine Code CPNB Only)

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1. NOx Sensor Control Module - J583- connector
2. NOx Sensor -G295-
3. NOx Sensor Control Module - J583-

Fig 19: NOx Sensor Control Module 2 - J881- and NOx Sensor 2 - G687- (Engine Code CPNB Only)

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1. NOx Sensor Control Module 2 - J881- connector
2. NOx Sensor 2 -G687-
3. NOx Sensor Control Module 2 -J881-

Fig 20: Particulate Sensor - G784- (Engine Code CPNB Only)

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1. Particulate Sensor - G784- connector
2. Particulate Sensor -G784-
3. Particulate Sensor - G784- control module