Component Locations, Overview
Overview Of 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
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
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 the fuel rail, the Intake Manifold Runner Position Sensor G336 must be adapted to the 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) 1 (behind Three Way Catalytic Converter (TWC) Heater 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 the Throttle Valve Control Module J338 , it must be adapted to the 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
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
A - Data Link Connector (DLC)
- In knee bolster on drivers side
B - Fuel Pump (FP) Control Module J538
- If 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" Warning lamp
In instrument cluster
D - Emission 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 stored in 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 line
- Cylinder 1 Fuel Injector N30
- Cylinder 2 Fuel Injector N31
- Cylinder 3 Fuel Injector N32
- Cylinder 4 Fuel Injector N33
Fuel injectors referred to here are high pressure fuel injectors. They inject fuel directly into the cylinder under high pressure (max. approx. 120 bar).
M - Knock Sensor (KS) 1 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 switch F1
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 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
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 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
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