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Component Locations






Component Locations

Components A through R are not depicted in the exploded view illustration.





1 - Mass air flow (MAF) sensor (G70)

2 - Heated Oxygen Sensor (HO2S) (G39) and Oxygen Sensor (O2S) Heater (Z19 )

• Removing and installing, refer to => [ Heated Oxygen Sensor before Catalytic Converter ] Heated Oxygen Sensor Before Catalytic Converter

3 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) ( Z29)

• => [ Oxygen sensors ]

• Removing and installing, refer to => [ Oxygen Sensor 1 and Heater after Catalytic Converter ] Oxygen Sensor 1 and Heater After Catalytic Converter

4 - Engine Coolant Temperature (ECT) Sensor (G62)

5 - Camshaft Adjustment Valve 1 (N205)

• Removing and installing, refer to => Engine Mechanical Engine

6 - Fuel Pressure Regulator Valve (N276)

• => [ and ]

7 - Single piston high pressure pump

• Removing and installing, refer to => [ High Pressure Pump ] High Pressure Pump

8 - Low Fuel Pressure Sensor ( G410)

• 15 Nm

9 - Intake Flap Motor (V157) with Intake Manifold Runner Position Sensor (G336 )

• The intake manifold runner position sensor (G336 ) must be adapted to the engine control module ( J623) using diagnosis and service system (VAS 5052) after removing or replacing the fuel rail.

• Removing and installing, refer to => [ Intake Flap Motor with Intake Manifold Runner Position Sensor ] Intake Flap Motor With Intake Manifold Runner Position Sensor

10 - Engine speed (RPM) sensor ( G28)

• => [ Electrical harness connectors ]

11 - 6-pin harness connector

• For Heated Oxygen Sensor (HO2S) (G39) and Oxygen Sensor (O2S) Heater (Z19) (black) => [ Electrical harness connectors ]

12 - 6-pin harness connector

• Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) and Oxygen Sensor (O2S) 1 (behind Three Way Catalytic Converter (TWC) Heater (Z29) (brown connector) => [ Electrical harness connectors ]

13 - Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)

14 - Engine Control Module ( J623)

• Removing and installing, refer to => [ Engine Control Module, Replacing ] Service and Repair

15 - Charge Air Pressure Sensor (G31)

• =>

• Removing and installing, refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction

16 - Throttle Valve Control Module (J338), Throttle Drive (for Electronic Power Control (EPC)) (G186)

• Throttle Drive Angle Sensor 1 (for Electronic Power Control (EPC)) (G187) and Throttle Drive Angle Sensor 2 (for Electronic Power Control (EPC)) (G188)

• After replacing the Throttle Valve Control Module (J338), it must be adapted to the Engine Control Module (ECM) (J623) (basic setting, display group 60) see "Guided Functions"

• =>

17 - Intake Air Temperature (IAT) Sensor (G42)

• =>

18 - Fuel Pressure Sensor (G247 )

• 22 Nm

• => [ (tightening specifications 22 Nm) ]

19 - Camshaft Position (CMP) Sensor (G40)

• =>

20 - Ignition coils with power output stages

• Ignition Coil 1 with Power Output Stage (N70)

• Ignition Coil 2 with Power Output Stage (N127)

• Ignition Coil 3 with Power Output Stage (N291)

• Ignition Coil 4 with Power Output Stage (N292)

• The ignition coils must be pulled out of cylinder head using ignition coil puller (T40039)

• Removing and installing, refer to => [ Ignition Coils with Power Output Stages ] Service and Repair

21 - Turbocharger Recirculating Valve (N249)

• Installed directly on turbocharger => [ Components on turbocharger ]

• Removing and installing, refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction

22 - Wastegate Bypass Regulator Valve (N75)

• Installed directly on turbocharger => [ Components on turbocharger ]

• Removing and installing, refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction

A - Data Link Connector (DLC)

• In knee bolster on driver's side

B - Fuel Pump (FP) Control Module (J538)

• =>

• If the Fuel Pump (FP) Control Module (J538) or fuel pump is replaced, an adaptation must be performed "Initiate basic setting" display group 103

• Check Fuel Pump (FP) Control Module (J538),

C - "EPC" Indicator lamp

• In instrument cluster

D - Emission Malfunction Indicator Lamp " MIL"

• In instrument cluster

E - 8-pin harness connector for fuel injectors

• => [ Component locations beneath intake manifold ]

F - Connector

• For Camshaft Position (CMP) Sensor (G40) and Fuel Pressure Sensor (G247)

• => [ Component locations beneath intake manifold ]

G - Brake Light Switch ( F) and Brake Pedal Switch (F63)

• => [ Installed location /, ]

H - Throttle Position (TP) Sensor (G79) and Accelerator Pedal Position Sensor 2 (G185)

• On accelerator pedal (both sensors are stored in one housing)

I - Clutch pedal switch (F36 )

• => [ Installed location /, ]

J - Relay and fuse carrier in E-box

• => [ Installed location in 4-socket relay carrier,
plenum chamber E-box ]

K - Coolant Fan Control (FC) control module (J293)

• Installed in left coolant fan, when facing driving direction

L - Fuel injector

• In fuel rail line

• Cylinder 1 Fuel Injector (N30)

• Cylinder 2 Fuel Injector (N31)

• Cylinder 3 Fuel Injector (N32)

• Cylinder 4 Fuel Injector (N33)

• Removing and installing, refer to => [ Fuel Injectors ] Fuel Injectors

Fuel injectors referred to here are high pressure fuel injectors. They inject fuel directly into the cylinder under high pressure (max. approximately 120 bar).

M - Knock Sensor (KS) I (G61 )

• For cylinder 1 and 2

• Tightening Specifications: 20 Nm

• => [ Component locations beneath intake manifold ]

N - Knock sensor 2 (G66)

• For cylinder 3 and 4

• Tightening Specifications: 20 Nm

• => [ Component locations beneath intake manifold ]

O - Oil pressure switch (F1)

• => [ Electrical harness connectors ]

• Checking, removing and installing, refer to => Engine Engine

P - Oil Level Thermal Sensor ( G266)

• =>

Q - Leak detection pump (LDP) ( V144)

• Only installed on engine code BPG

R - Left Electro-Hydraulic Engine Mount Solenoid Valve (N144)

• Only installed on vehicles with automatic transmission

Fuel Pressure Sensor (G247 ) - 1 - (tightening specifications 22 Nm)





• Tightening specifications of the connection is "30 Nm", and must be checked before installing the Fuel Pressure Sensor (G247).

Camshaft Position (CMP) Sensor (G40) - 1 -





Mass Air Flow (MAF) Sensor ( G70) - 1 -





Camshaft Adjustment Valve 1 (N205) - 1 - and Fuel Pressure Regulator Valve (N276) - 2 -





Intake Air Temperature (IAT) Sensor (G42) - 1 - Throttle Valve Control Module (J338) - 2 -





Fuel Pump (FP) Control Module (J538) - 1 -





• If the Fuel Pump (FP) Control Module (J538) or fuel pump is replaced, an adaptation must be performed "Initiate basic setting" display group 103

• Check Fuel Pump (FP) Control Module (J538).

Electrical harness connectors





1 Heated Oxygen Sensor (HO2S) (G39) and Oxygen Sensor (O2S) Heater (Z19 ) (black connector)

2 Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) (Z29 ) (brown connector)

Oxygen sensors





1 Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) (Z29 )

2 Heated Oxygen Sensor (HO2S) (G39) and Oxygen Sensor (O2S) Heater (Z19 )

Installed location of Engine Control Module (ECM) (J623)





Engine Coolant Temperature (ECT) Sensor (G62) - 1 -





Installed location Brake Light Switch (F)/Brake Pedal Switch (F47), Clutch Pedal Switch (F36)





1. Brake light switch (F), Brake pedal switch (F47)

2. Clutch pedal switch (F36)

• To ensure that they are absolutely securely seated, the switches may only be installed once.

Installed location in 4-socket relay carrier, plenum chamber E-box





1.1 Not used
1.2 Starting Interlock Relay ( J207)
2 Motronic Engine Control Module (ECM) Power Supply Relay (J271)
3 Engine Component Power Supply Relay (J757)

Installed location on 9-socket relay carrier in driver footwell





Arrow Fuel Pump (FP) Relay ( J17)

Electrical harness connectors





1 Oil Pressure Switch (F1)
2 3-pin connector (gray) for Engine Speed (RPM) Sensor (G28)
3 Engine Speed (RPM) Sensor ( G28)

Component locations beneath intake manifold





1 Knock Sensor (KS) 1 (G61 )
2 Knock Sensor (KS) 2 (G66 )
3 Oil Pressure Switch (F1) in oil filter bracket
4 3-pin connector (gray) for Engine Speed (RPM) Sensor (G28)
5 Electrical connector for Camshaft Position (CMP) Sensor (G40) and Fuel Pressure Sensor (G247)
6 8-pin harness connector for fuel injectors

Charge Air Pressure Sensor ( G31) - 1 -





- O-ring, replace

- Tighten to 5 Nm

- Removing and installing, refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction

Oil Level Thermal Sensor ( G266)





Components on turbocharger





1 Turbocharger
2 Tighten Wastegate Bypass Regulator Valve (N75) to 3 Nm.
3 Tighten Turbocharger Recirculating Valve (N249) to 7 Nm (observe installed location, next illustration)

Observe installed location of Turbocharger Recirculating Valve (N249)




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