Component Locations, Overview
Component Locations, Overview
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
3. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130 and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) Z29
4. Engine coolant temperature (ECT) sensor G62
5. Camshaft Adjustment Valve 1 N205
- Removing and installing
6. Fuel Pressure Regulator Valve N276
7. Single-piston high-pressure pump
8. Low Fuel Pressure Sensor G410
- 15 Nm
9. Intake Flap Motor V157 with Intake Manifold Runner Position Sensor G336
- After replacing fuel rail, the Intake Manifold Runner Position Sensor G336 must be adapted to Engine Control Module (ECM) J623 again, "Guided Functions"
10. Engine Speed (RPM) Sensor G28
11. 6-pin harness connector
- For Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor (O2S) Heater Z19 (black)
12. 6-pin harness connector
- 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)
13. Evaporative emission (EVAP) canister purge regulator valve N80
14. Engine control module J623
15. Charge Air Pressure Sensor G31
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 Throttle Valve Control Module J338, it must be adapted to Engine Control Module (ECM) J623 again (basic setting, display group 60) see "Guided Functions"
17. Intake Air Temperature (IAT) Sensor G42
18. Fuel Pressure Sensor G247
- 22 Nm
19. Camshaft Position (CMP) Sensor G40 (Hall sender)
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
21. Turbocharger Recirculating Valve N249
- Installed directly on turbocharger
22. Wastegate Bypass Regulator Valve N75
- Installed directly on turbocharger
- Removing and installing
A. Data Link Connector (DLC)
- In knee bolster on drivers side
B. Fuel Pump (FP) Control Module J538
C. "EPC" Warning lamp
- In instrument cluster
D. Emissions Malfunction Indicator Lamp "MIL"
- In instrument cluster
E. 8-pin harness connector for fuel injectors
F. Connector
- For Camshaft Position (CMP) Sensor G40 and Fuel Pressure Sensor G247
G. Brake light switch F and Brake pedal switch F63
H. Throttle position (TP) sensor G79 and Accelerator Pedal Position Sensor 2 G185
- On accelerator pedal (both sensors are integrated into one housing)
I. Clutch pedal switch F36
J. Relay and fuse carrier in 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
- Cylinder 1 Fuel Injector N30
- Cylinder 2 Fuel Injector N31
- Cylinder 3 Fuel Injector N32
- Cylinder 4 Fuel Injector N33
These fuel injectors are also known as high-pressure fuel injectors. They inject fuel under high-pressure (max. approx 120 bar) directly into cylinder.
M. Knock Sensor (KS) I G61
- For cylinder 1 and 2
Torque specification: 20 Nm
N. Knock sensor 2 G66
- For cylinder 3 and 4
Torque specification: 20 Nm
O. Oil Pressure Sensor G10
- Checking, removing and installing
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- (torque specification: 22 Nm)
- The torque specification of connection: "30 Nm" must be verified before installation of 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-
Electrical harness connectors
1. 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)
2. Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor (O2S) Heater Z19 (black 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 and Brake pedal switch F 47, Clutch pedal switch F36
1. Brake light switch F, Brake pedal switch F 47
2. Clutch pedal switch F 36
NOTE: 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 Sensor G10
2. 3-pin connection (gray) for engine speed (RPM) sensor G28
3. Engine Speed (RPM) Sensor G28
Installed location beneath intake manifold
1. Knock Sensor (KS) I G61
2. Knock Sensor (KS) II G66
3. Oil Pressure Sensor G10 in oil filter bracket
4. 3-pin connection (gray) for engine speed (RPM) sensor G28
5. Electrical connection 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
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