Component Locations
Component Locations, Overview
Components A through Q are not depicted in the exploded view illustration.
1 - Wastegate Bypass Regulator Valve N75
- Installed directly on turbocharger
2 - Turbocharger Recirculating Valve N249
- Installed directly on turbocharger
3 - Motronic engine control module J220
4 - 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
5 - Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor (O2S) Heater Z19
6 - Low Fuel Pressure Sensor G410
- Torque specification: 15 Nm
7 - Fuel Pressure Regulator Valve N276
8 - Camshaft Adjustment Valve 1 N205
9 - Engine coolant temperature (ECT) sensor G62
10 - 6-pin harness connector
- for Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor (O2S) Heater Z19 (black)
11 - Single-piston high-pressure pump
12 - Engine Coolant Temperature (ECT) sensor (on radiator) G83
13 - Intake Flap Motor V157 with Intake Manifold Runner Position Sensor G336
- After replacement of the fuel rail, the Intake Manifold Runner Position Sensor G336 must be adapted to Motronic Engine Control Module (ECM) J220 again, or Guided Functions
14 - Evaporative emission (EVAP) canister purge regulator valve N80
15 - Connector
- For Camshaft Position (CMP) Sensor G40 and Fuel Pressure Sensor G247
16 - Charge Air Pressure Sensor G31
17 - Engine Speed (RPM) Sensor G28
18 - 8-pin harness connector for fuel injectors
19 - 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 Motronic Engine Control Module (ECM) J220 again (basic setting, display group 60) see or Guided Functions
20 - Intake Air Temperature (IAT) Sensor G42
21 - Fuel Pressure Sensor G247
- Torque specification: 22 Nm
22 - Camshaft Position (CMP) Sensor G40 (Hall sender)
- Electrical harness connector
A - Data Link Connector (DLC)
- In knee bolster on drivers side
B - Mass air flow (MAF) sensor G70
- In upper part of air filter
C - Fuel Pump (FP) Control Module J538
- If Fuel Pump (FP) Control Module J538 is replaced, an adaptation must be performed. Basic setting, measuring value block 103.
D - "EPC" Warning lamp
- in instrument cluster
E - Emissions Malfunction Indicator Lamp "MIL"
- in instrument cluster
F - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130 and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) Z29
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 Position Sensor G476
J - Relay and fuse carrier in E-box
K - Coolant Fan Control (FC) control module J293
- Installed on 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 110 bar) directly into the cylinder.
M - 3-pin harness connector for Knock Sensor (KS) 1 G61
N - 3-pin harness connector for Knock Sensor (KS) 2 G66
O - Knock Sensor (KS) I G61
- For cylinder 1 and 2
- Torque specification: 20 Nm
P - Knock sensor 2 G66
- For cylinder 3 and 4
- Torque specification: 20 Nm
Q - Oil Pressure Sensor G10
Engine Coolant Temperature (ECT) Sensor G62 - 1 -
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 -
Fuel Pump (FP) Control Module J538 - 1 -
- If Fuel Pump (FP) Control Module J538 is replaced, an adaptation must be performed. Basic setting, measuring value block 103.
Electrical harness connector - 1 - of the Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor (O2S) Heater Z19
Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC)
1 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130 and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) Z29
Electrical harness connector for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130 and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) Z29 at right of vehicle underbody
Engine Coolant Temperature (ECT) Sensor (on Radiator) G83 - 1 -
Connector - 4 - for the Clutch Position Sensor G476
Brake light switch F and Brake pedal switch F63 - arrow - (in driver footwell)
Component location Throttle Position (TP) Sensor G79 and Accelerator Pedal Position Sensor 2 G185 (in driver footwell)
Relay and fuse carrier in E-box
R1 - Power Supply Relay (terminal 15) J329
R2 - Power Supply Relay (terminal 50) J682
R3 - Engine Component Power Supply Relay J757
R4 - Motronic engine control module (ECM) power supply relay J271
Electrical harness connectors
1 - 3-pin harness connector (green) for Knock Sensor (KS) 1 G61
2 - 3-pin harness connector (brown) for Knock Sensor (KS) 2 G66
3 - Oil Pressure Sensor G10
4 - Engine Speed (RPM) Sensor G28
5 - 3-pin connection (gray) for 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
4 - 3-pin harness connector (brown) for Knock Sensor (KS) 2 G66
5 - 3-pin connection (gray) for engine speed (RPM) sensor G28
6 - Electrical connection for Camshaft Position (CMP) Sensor G40 and Fuel Pressure Sensor G247
7 - 8-pin harness connector for fuel injectors
Charge Air Pressure Sensor G31 - 1 -.
Components on turbocharger
1 - Turbocharger, removing and installing
2 - Fasten Wastegate Bypass Regulator Valve N75 to 3 Nm
3 - Fasten Turbocharger Recirculating Valve N249 to 7 Nm (observe installed location, next illustration)
Observe installed location of Turbocharger Recirculating Valve N249