Component Locations Overview
Component Locations Overview
Components A through N are not shown in the exploded view.
1 - Pressure Sensor
• The component is called a differential pressure sensor (G505).
• Component location
• After replacing, perform an adaptation
2 - Camshaft Position Sensor (G40)
• 10 Nm
• Component location
3 - Heated Oxygen Sensor (G39) with Oxygen Sensor Heater (Z19)
4 - Engine Control Module (J623)
• Component location
5 - Injection Units (Piezo injectors)
• Component location
6 - Charge Pressure Actuator Position Sensor (G581)
• Component location
7 - Pressure Retention Valve
• The check valve always maintains a residual pressure (control quantity) of approximately 10 bar in the fuel return lines.
• The Piezo injectors need this control quantity for their function.
• The check valve can be replaced only with the complete fuel return lines.
• The engine must run at idle for approximately two minutes after replacing to bleed the fuel system.
• Check pressure retaining valve.
8 - Fuel Pressure Regulator Valve (N276)
• 80 Nm
• Component location
9 - Wastegate Bypass Regulator Valve (N75)
• Exhaust gas temperature sensor 3 (G495) connector
10 - Electrical Harness Connector
• For exhaust gas temperature sensor 4 (G648)
• For exhaust gas temperature sensor 1 (G235)
• For heated oxygen sensor (G39)
11 - Mass Airflow Sensor (G70)
12 - Engine Coolant Temperature Sensor (G62)
• Component location
13 - Engine Speed Sensor (G28)
• 4.5 Nm
• Component location
14 - Component on the Intake Manifold
• Intake flap motor (V157) with intake manifold runner position sensor (G336)
• Component location
15 - EGR Cooler Switch-Over Valve (N345)
• Engine codes CBAA, CBAB and CBBB only
16 - Exhaust Gas Recirculation Cooler Pump (V400)
• Component location
17 - Component on the Intake Manifold
• Throttle valve control module (J338) with throttle position sensor (G69)
• Component location
18 - Charge Air Pressure Sensor (G31)
• Same component with intake air temperature sensor (G42)
• Component location
19 - Glow Plugs
• Glow Plug 1 (Q10)
• Glow Plug 2 (Q11)
• Glow Plug 3 (Q12)
• Glow Plug 4 (Q13)
20 - Fuel Temperature Sensor (G81) inside the Fuel Supply Line
• Component location
21 - Exhaust Gas Recirculation
• EGR motor (V338) with EGR potentiometer (G212)
• Component location
22 - Fuel Return Line Connection to the Fuel Filter
23 - Fuel Supply Line Connection (high pressure line) to the Fuel Rail (high pressure reservoir)
24 - Fuel High Pressure Pump with Fuel Metering Valve (N290)
• Fuel metering valve (N290) not opened
• After replacing, the fuel tank must be filled (never run dry).
25 - Fuel Pressure Sensor (G247)
• 100 Nm
• Component location
26 - Engine Coolant Temperature Sensor (on Radiator) (G83)
• Installed location
27 - Auxiliary Fuel Pump (V393)
28 - Fuel Filter
A - Low Heat Output Relay (J359) and High Heat Output Relay (J360)
• Component location
B - Brake Light Switch (F) and Brake Pedal Switch (F47)
• Component location
• In footwell at brake pedal
C - Clutch Position Sensor (G476)
• Only for vehicles with manual transmission
D - Accelerator Pedal Position Sensor (G79) and Accelerator Pedal Position Sensor 2 (G185)
• Component location
E - EGR Temperature Sensor (G98)
• Installed in the EGR housing
• Electrical harness connector
F - EGR motor (V338) with EGR Position Sensor 2 (G466)
• Installed in the EGR housing
G - Exhaust Pressure Sensor 1 (G450)
• Component location
H - Exhaust Gas Temperature Sensor 1 (G235)
• Component location
I - Exhaust Gas Temperature Sensor 2 (G448)
• Component location
• Location of electrical connector
J - Exhaust Gas Temperature Sensor 3 (G495)
K - Exhaust Gas Temperature Sensor 4 (G648)
• Component location
L - Oxygen Sensor after Three Way Catalytic Converter (G130)
• Location of electrical connector
• Component location
M - Exhaust Door Control Unit (J883)
• Component location
N - Particulate Filter
• Installed on the underbody
• Shared component with a catalytic converter
• After replacing, perform an adaptation
Location Engine Control Module (J623)
Accelerator Pedal Position Sensor (G79) and Accelerator Pedal Position Sensor 2 (G185)
• The accelerator pedal position sensor (G79) and accelerator pedal position sensor 2 (G185) are integrated into the accelerator pedal module and cannot be replaced separately.
Brake Lamp Switch (F) and Brake Pedal Switch (F47) - 1 -
• On the master brake cylinder.
Transfer Fuel Pump (G6)
Charge Air Pressure Sensor (G31) with Intake Air Temperature Sensor (G42)- 1 -
Installation Locations
1 Fuel pressure sensor (G247)
2 Fuel pressure regulator valve (N276)
3 Variable intake manifold runner motor (V183) with intake manifold tuning valve position sensor (G513) (engine codes CBAA, CBAB and CBBB)
3 Intake flap motor (V157) with Intake manifold runner position sensor (G336) (engine code CBEA)
4 EGR cooler switch-over valve (N345) (installed location applies only to engine codes CBAA, CBAB and CBBB)
5 Intake flap motor (V157) with intake manifold runner position sensor (G336) (engine codes CBAA, CBAB and CBBB)
5 Throttle valve control module (J338) with throttle position sensor (G69)(engine code CBEA)
6 EGR vacuum regulator solenoid valve (N18) with EGR Potentiometer (G212)
6 EGR motor (V338) with EGR potentiometer (G212) (engine code CBEA)
7 Fuel temperature sensor (G81)
8 Fuel metering valve (N290)
Components on Front of Engine
1 Camshaft position sensor (G40) connector
2 EGR cooler switch-over valve (N345) (installed location applies only to engine codes CBAA, CBAB and CBBB)
3 Variable intake manifold runner motor (V183) with intake manifold tuning valve position sensor (G513) (engine codes CBAA, CBAB and CBBB)
3 Intake flap motor (V157) with Intake manifold runner position sensor (G336) (engine code CBEA)
Components on the Engine
1 Exhaust pressure sensor 1 (G450) (engine codes CBAA, CBAB and CBBB)
1 Differential pressure sensor (G505) (engine code CBEA)
2 Charge pressure actuator position sensor (G581)
3 Fuel Pressure Sensor (G247)
4 Fuel injectors (N30 through N32)
Fuel Injectors
1 Cylinder 1 Fuel Injector (N30)
2 Cylinder 2 Fuel Injector (N31)
3 Cylinder 3 Fuel Injector (N32)
4 Cylinder 4 Fuel Injector (N33)
5 Fuel Pressure Regulator Valve (N276)
Installed locations for vehicles with engine code CBEA, see next illustration
Installed locations and connectors (engine code CBEA)
1 For the wastegate bypass regulator valve (N75)
2 For exhaust gas temperature sensor 2 (G448)
3 For exhaust gas temperature sensor 1 (G235)
4 For heated oxygen sensor (G39)
5 For exhaust gas temperature sensor 3 (G495)
Exhaust Gas Recirculation Cooler Pump (V400)
Camshaft Position Sensor (G40)
Pressure Sensor
The component is called a differential pressure sensor (G505).
Exhaust Pressure Sensor 1 (G450) - 3 -
Engine Coolant Temperature Sensor on Radiator (G83)
Engine Coolant Temperature Sensor (G62) - 2 -
Engine Speed Sensor (G28) - arrow -
Electrical Connectors
1 EGR temperature sensor (G98)
2 Hose for crankcase ventilation
3 Positive crankcase ventilation heating element (N79)
4 Bolt
Components on the Back of the Engine
1. Exhaust gas temperature sensor 1 (G235)
2. Exhaust gas temperature sensor 4 (G648)
3. Vacuum diaphragm for EGR cooling system
Components Inside the Particulate Filter
1 Oxygen sensor (G39)
2 Exhaust gas temperature sensor 2 (G448)
3 Exhaust gas temperature sensor 3 (G495)
4 Exhaust pressure sensor 2 (G451)
Exhaust Flap Control Module (J883)
Installed Locations and Connectors
1 Exhaust gas temperature sensor 4 (G648)
2 Bracket
3 Oxygen sensor after three way catalytic converter (G130)
Exhaust Gas Temperature Sensor 4 (G648) - 1 -
Oxygen Sensor after Three Way Catalytic Converter (G130) Wire Connection - arrow -
