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)
