Fuel Injection Overview

Engine Compartment

Fig 1: Engine Compartment View, Fuel Injection Component Locations

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1. Mass Airflow Sensor -G70-
   • Removing and installing, refer to Mass Air Flow Sensor -G70-, REMOVING AND INSTALLING 
2. Connector for the EGR Temperature Sensor -G98-
   • Component location, refer to Fig 12
   • Removing and installing, refer to EGR TEMPERATURE SENSOR -G98-, REMOVING AND INSTALLING
3. Connector
   • For Map Controlled Engine Cooling Thermostat -F265-, Fuel Metering Valve -N290- and EGR Motor -V338-
   • Component location, refer to Fig 12
4. Restrictor
   • In the fuel return line
   • Component location, refer to Fig 12
5. Differential Pressure Sensor -G505-
   • Component location, refer to Fig 8
   • Overview, refer to HEATED OXYGEN SENSOR OVERVIEW 
6. Fuel Temperature Sensor -G81-
7. Battery Jump Start Terminal
8. Turbocharger Control Module 1 -J724-
   • At turbocharger
   • Removing and installing, refer to TURBOCHARGER CONTROL MODULE 1 -J724-, REMOVING AND INSTALLING
9. Exhaust Gas Temperature Sensor 1 -G235-
   • Component location, refer to Fig 18
   • Removing and installing, refer to Exhaust Gas Temperature Sensor 1 -G235-, REMOVING AND INSTALLING
10. Exhaust Gas Temperature Sensor 3 -G495-
    • (Only for engine code CDUD)
11. Cylinder Head Coolant Valve -N489-
12. EGR Motor -V338-
    • Removing and installing, refer to EGR Motor -V338-, REMOVING AND INSTALLING .
13. Heated Oxygen Sensor -G39- with Oxygen Sensor Heater -Z19-
    • (Only for engine code CDUD)
14. Engine Coolant Temperature Sensor -G62-
15. Engine Control Module -J623-
    • Component location, refer to Fig 4
    • 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 Fig 11
17. Injector
    • Cylinder bank 2
    • Removing and installing, refer to FUEL INJECTORS, REMOVING AND INSTALLING 
18. Throttle Valve Control Module -J338-
    • Overview, refer to INTAKE MANIFOLD OVERVIEW 
19. Connectors
    • For the Heated Oxygen Sensor -G39-
    • For the Exhaust Gas Temperature Sensor 3 -G495-
    • (Only for engine code CDUD)
20. Fuel Pressure Sensor -G247-
    • Removing and installing, refer to Fuel Pressure Sensor -G247-, REMOVING AND INSTALLING 
21. Oil Pressure Regulation Valve -N428-
    • Component location, refer to Fig 16
    • Removing and installing, refer to Oil Pressure Regulation Valve -N428-, REMOVING AND INSTALLING
22. Engine Temperature Control Temperature Sensor -G694-
    • Component location, refer to Fig 13
23. Intake Flap Motor -V157-
    • Overview, refer to INTAKE MANIFOLD OVERVIEW .
24. EGR Cooler Switch-Over Valve -N345-
    • Removing and installing, refer to REMOVING (See Figure 135) .
25. Reduced Oil Pressure Switch -F378-
    • Removing and installing, refer to Oil Pressure Switch - F22- / Reduced Oil Pressure Switch - F378-, REMOVING AND INSTALLING .
26. Oil Pressure Switch -F22-
    • Removing and installing, refer to Oil Pressure Switch - F22- / Reduced Oil Pressure Switch - F378-, REMOVING AND INSTALLING .
27. Fuel Pressure Regulator Valve -N276-
    • Overview, refer to Fuel Pressure Regulator Valve -N276-, REMOVING AND INSTALLING .
28. Engine Coolant Temperature Sensor on Radiator Outlet -G83-
    • Component location, refer to Fig 14
    • Removing and installing, refer to Engine Coolant Temperature Sensor on Radiator Outlet -G83-, REMOVING AND INSTALLING .
29. Injector
    • Cylinder bank 1
    • Overview, refer to HIGH PRESSURE PUMP OVERVIEW 
    • Removing and installing, refer to FUEL INJECTORS, REMOVING AND INSTALLING 

Engine Top 

Fig 2: Engine Top View, Fuel Injection Component Locations

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1. Fuel Pressure Regulator Valve -N276-
   • Overview, refer to HIGH PRESSURE PUMP OVERVIEW 
2. Cylinder 1 Fuel Injector -N30-
   • Overview, refer to FUEL INJECTORS OVERVIEW 
3. Glow Plug 1 -Q10-
   • Overview, refer to GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR OVERVIEW
4. Cylinder 2 Fuel Injector -N31-
   • Overview, refer to FUEL INJECTORS OVERVIEW 
5. Camshaft Position Sensor -G40-
   • Component location, refer to Fig 9
   • Overview, refer to GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR OVERVIEW
6. Glow Plug 2 -Q11-
   • Overview, refer to GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR OVERVIEW
7. Cylinder 3 Fuel Injector -N32-
   • Overview, refer to FUEL INJECTORS OVERVIEW 
8. Glow Plug 3 -Q12-
   • Overview, refer to GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR OVERVIEW
9. Fuel Temperature Sensor -G81-
10. Turbocharger Control Module 1 -J724-
    • At turbocharger
    • Removing and installing, refer to TURBOCHARGER CONTROL MODULE 1 -J724-, REMOVING AND INSTALLING
11. Fuel Metering Valve -N290-
    • Component location Fig 10
12. EGR Motor -V338-
    • Removing and installing, refer to EGR Motor -V338-, REMOVING AND INSTALLING
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 GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR OVERVIEW
15. Cylinder 6 Fuel Injector -N84-
    • Overview, refer to FUEL INJECTORS OVERVIEW 
16. Glow Plug 5 -Q14-
    • Overview, refer to GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR OVERVIEW
17. Cylinder 5 Fuel Injector -N83-
    • Overview, refer to FUEL INJECTORS OVERVIEW 
18. Glow Plug 4 -Q13-
    • Overview, refer to GLOW PLUG, CAMSHAFT POSITION SENSOR AND ENGINE SPEED SENSOR OVERVIEW
19. Cylinder 4 Fuel Injector -N33-
    • Overview, refer to FUEL INJECTORS OVERVIEW 
20. Engine Coolant Temperature Sensor -G62-
    • Removing and installing, refer to Engine Coolant Temperature Sensor -G62-, REMOVING AND INSTALLING
21. EGR Temperature Sensor -G98-
    • Removing and installing, refer to EGR TEMPERATURE SENSOR -G98-, REMOVING AND INSTALLING
22. Cylinder Head Coolant Valve -N489-

Engine Front

Fig 3: Engine Front View, Fuel Injection Component Locations

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1. Oil Level Thermal Sensor -G266-
   • Removing and installing, refer to Oil Level Thermal Sensor -G266-, REMOVING AND INSTALLING
2. Map Controlled Engine Cooling Thermostat -F265-
   • Removing and installing, refer to Map Controlled Engine Cooling Thermostat -F265-, REMOVING AND INSTALLING
3. Oil Temperature Sensor 2 -G664-
   • Component location, refer to Fig 15
   • Removing and installing, refer to Oil Temperature Sensor 2 -G664-, REMOVING AND INSTALLING
4. Oil Pressure Switch -F22-
   • Removing and installing, refer to Oil Pressure Switch - F22- / Reduced Oil Pressure Switch - F378-, REMOVING AND INSTALLING
5. Reduced Oil Pressure Switch -F378-
   • Removing and installing, refer to Oil Pressure Switch - F22- / Reduced Oil Pressure Switch - F378-, REMOVING AND INSTALLING
6. EGR Cooler Switch-Over Valve -N345-
   • Removing and installing, refer to REMOVING (See Figure 135)
7. Intake Flap Motor -V157-
   • Overview, refer to INTAKE MANIFOLD OVERVIEW 
8. Throttle Valve Control Module -J338-
   • Overview, refer to INTAKE MANIFOLD OVERVIEW 
9. Engine Temperature Control Temperature Sensor -G694-
   • Component location, refer to Fig 13
10. Oil Pressure Regulation Valve -N428-
    • Component location, refer to Fig 16
    • Removing and installing, refer to Oil Pressure Regulation Valve -N428-, REMOVING AND INSTALLING
11. A  - Fuel Pump Control Module -J538-
    • Component location, see Fig 7.
    • Removing and installing, refer to Fuel Pump Control Module -J538-, REMOVING AND INSTALLING
12. B  - Engine Speed Sensor -G28-
    • Component location, refer to Fig 17
13. C  - Accelerator Pedal Position Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185-
    • Component location, refer to Fig 5
14. D  - Brake Lamp Switch -F-
    • Component location, refer to Fig 6
15. E  - Exhaust Gas Temperature Sensor 4 -G648-
    • Component location, refer to Fig 19
    • Removing and installing, refer to Exhaust Gas Temperature Sensor 4 -G648-, REMOVING AND INSTALLING
16. F  - Exhaust Gas Temperature Sensor 2 -G448-
    • Component location, refer to Fig 20
17. G  - Particulate Sensor -G784-
    • Installation position, refer to Fig 21 and Fig 22
18. H  - NOx Sensor Control Module 2 -J881- with NOx Sensor 2 -G687-
    • For NOx Sensor Control Module 2 -J881-, refer to Fig 22
    • Installed location NOx Sensor 2 -G687-, refer to Fig 21
19. I  - NOx Sensor Control Module -J583- with NOx Sensor -G295-
    • Installed location NOx Sensor Control Module -J583-, refer to Fig 23
    • NOX Sensor -G295- installation location, refer to Fig 20

Fig 4: Release Retainers And Remove Engine Control Module

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

Fig 5: Accelerator Pedal Position Sensor

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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: Brake Lamp Switch & Clutch Position Sensor

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1. Brake Lamp Switch -F- /Brake Pedal Switch -F47-
2. Clutch Position Sensor -G476- (Only on vehicles with a manual transmission)

Removing and installing, refer to BRAKE LAMP SWITCH, REMOVING AND INSTALLING .

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

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The Fuel Pump Control Module -J538- is located under the right rear seat bench 1/3 under the cover.

Removing and installing, refer to Fuel Pump Control Module -J538-, REMOVING AND INSTALLING .

Fig 8: Connector -3- & Differential Pressure Sensor -G505- -2-

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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: -2- In The High Pressure Pump, And Clamps

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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 engine compartment.

Removing and installing, refer to Charge Air Pressure Sensor -G31 - / Intake Air Temperature Sensor -G42-, REMOVING AND INSTALLING .

Fig 12: Identifying Connectors

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1. For the EGR Temperature Sensor -G98-
2. For Map Controlled Engine Cooling Thermostat -F265-, Fuel Metering Valve -N290- and EGR Motor -V338-
3. Restrictor in the fuel return line

Fig 13: Engine Temperature Control Sensor -G694-

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• -Item 1- on left front cylinder block.

Removing and installing, refer to Engine Temperature Control Sensor -G694-, REMOVING AND INSTALLING .

Fig 14: Engine Coolant Temperature Sensor on Radiator Outlet

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Refer to 19 COOLING SYSTEM .

Fig 15: Identifying Connector

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Fig 16: Oil Pressure Regulation Valve -N428-

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Fig 17: Engine Speed Sensor -G28- Component Location

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Fig 18: Identifying Connector

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

Fig 19: Exhaust Gas Temperature Sensor 4 -G648- -arrow-

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1. Exhaust Gas Temperature Sensor 4 -G648-
2. Connector for the Exhaust Gas Temperature Sensor 4 -G648-

Fig 20: Exhaust Gas Temperature Sensors

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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 the Exhaust Gas Temperature Sensor 2 -G448-
6. Connector for the Exhaust Gas Temperature Sensor 3 -G495-
7. Heated Oxygen Sensor -G39- connector

Fig 21: Particulate Sensor -G784- and NOx Sensor 2 -G687-

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1. Particle Sensor -G784-
2. NOx Sensor 2 -G687-

Fig 22: Particulate Sensor -G784- and NOx Sensor 2 Control Module -J881-

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2 - Particle Sensor -G784-

4 - NOx Sensor Control Module 2 -J881-

Fig 23: NOx Sensor Control Module -J583- -2-

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