Computers and Control Systems: Locations
Component Overview
The following components are not displayed in the installation overview:
Malfunction Indicator Lamp (MIL) -K83-
Electronic Power Control (EPC) Warning Lamp -K132-
Leak detection pump (LDP) -V144-
- Under wheel housing liner in rear left wheelhouse
Throttle Position (TP) Sensor -G79-
Clutch Vacuum Vent Valve Switch -F36-
Secondary Air Injection (AIR) Pump Relay - J299-
Secondary Air Injection (AIR) Pump Motor - V101-
Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131- bank 2*, 50 Nm
- Component location: in rear catalytic converter cylinder bank 2
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) Relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC)
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC)
Heated Oxygen Sensor (HO2S) 2 -G108- bank 2*, 50 Nm
- Component location: in front exhaust pipe cylinder bank 2
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) Relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC)
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC)
- Component location: in rear catalytic converter cylinder bank 1
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) Relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC)
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC)
- Component location: in front exhaust pipe cylinder bank 1
- Use "G5" to grease thread only; do not let "G5" get onto slits of oxygen sensor body
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) Relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC)
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC)
The following components are displayed in the Component location overview:
NOTE: Cylinder bank 1 is located on right side in direction of travel.
1 Harness connector for bank 1 Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- and Oxygen Sensor (O2S) Heater 1 -Z29-
- 4-pin/green
2 Harness connector for bank 2 Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131- and Oxygen Sensor (O2S) Heater 2 -Z30-
- 4 pin/brown
3 Harness connector for bank 1 Heated Oxygen Sensor (HO2S) -G39- and Oxygen Sensor (O2S) Heater -Z19-
- 4-pin/black
4 3-pin harness connector
- For Knock Sensor (KS) 1 -G61-
5 Engine Coolant Temperature (ECT) Sensor -G62-
- At coolant pipe behind cylinder head bank 1
6 Wastegate Bypass Regulator Valve -N75-
7 Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-
8 Sensor -1- for exhaust temperature -G235-
- At the left rear of the intake manifold (when looking into the engine compartment from the front of the vehicle); for vehicles with automatic transmission
9 Secondary Air Injection (AIR) Solenoid Valve -N112-
- Only for vehicles with automatic transmission
10 Secondary Air Injection (AIR) Pump Motor -V101-
- Only for vehicles with automatic transmission
11 Bank 2 Exhaust Gas Temperature (EGT) Sensor 1 -G236-
- For vehicles with automatic transmission, this sensor is located at position -8- along with Sensor -1- for exhaust temperature - G235-. The two sensors are installed in series.
12 Recirculating valve for turbocharger - N249-
13 Fuel pressure regulator
14 Camshaft Position (CMP) Sensor 2 -G163-
- Cylinder bank 2
15 Secondary Air Injection (AIR) Pump Relay -J299-
- Only for vehicles with automatic transmission
16 Motronic Engine Control Module (ECM) - J220-
(Motronic Engine Control Module (ECM) - J220-)
- Component location: in protective housing, plenum chamber, left
- Engine code AHA: 80-pin
- Checking voltage supply
17 3-pin harness connector
- For Engine Speed (RPM) Sensor -G28-
- Gray
18 3-pin harness connector
- For Knock Sensor (KS) 2 -G66-
19 Harness connector for Heated Oxygen Sensor (HO2S) 2 -G108- and Oxygen Sensor (O2S) 2 Heater -Z28-
- 4-pin/black
20 Valve -2- for camshaft adjustment -N208-
21 Throttle Valve Control Module -J338-
- With Throttle drive (power accelerator actuation) -G186-, Angle sensor -1- for throttle drive (power accelerator actuation) -G187-, and Angle sensor -2- for throttle drive (power accelerator actuation) -G188-
22 Charge Air Pressure Sensor -G31-
- Located in rubber shroud in front of throttle valve control module
23 Camshaft Position (CMP) Sensor -G40-
- Cylinder bank 1
24 Power output stage 2 -N192-
- For ignition coils cylinder bank 2
- In engines with engine code "BEL", output stages are in the ignition coils
25 Power Output Stage -N122-
- For ignition coils cylinder bank 1
- In engines with engine code "BEL", output stages are in the ignition coils
26 Valve -1- for camshaft adjustment -N205-
27 Bank 1, Heated Oxygen Sensor (HO2S) - G39- with Oxygen Sensor (O2S) Heater - Z19-
28 Knock Sensor (KS) 1 -G61-
29 Knock Sensor (KS) 2 -G66-
30 Engine Speed (RPM) Sensor -G28-
- In transmission housing above the starter ring gear
31 Bank 2, Heated Oxygen Sensor (HO2S) 2 - G108- with Oxygen Sensor (O2S) 2 Heater -Z28-
32 Ignition coils cylinder bank 2
- Cylinder 4 Ignition Coil -N163-
- Cylinder 5 Ignition Coil -N164-
- Cylinder 6 Ignition Coil -N189-
33 Fuel injectors
- Cylinder bank 2 Cylinder 4 Fuel Injector - N33-Cylinder 5 Fuel Injector -N83- Cylinder 6 Fuel Injector -N84-
34 Intake Air Temperature (IAT) Sensor -G42-
- On the lower front part of the intake manifold, near the throttle valve control module
35 2-pin connector
- For Intake Air Temperature (IAT) sensor (measurements are made at this connector)
36 Fuel injectors
- Cylinder bank 1 Cylinder 1 Fuel Injector -N30- Cylinder 2 Fuel Injector -N31-Cylinder 3 Fuel Injector -N32-
37 Ignition coils cylinder bank 1
- Cylinder 1 Ignition Coil -N
- Cylinder 2 Ignition Coil 2 -N128-
- Cylinder 3 Ignition Coil 3 -N158-
38 Mass Air Flow (MAF) Sensor -G70-
Component location of sensor for exhaust temperature in vehicles with automatic transmission:
Fig. 1 Component location of sensor for exhaust temperature in vehicles with automatic transmission:
1 Sensor -1- for exhaust temperature -G235-
2 Bank 2 Exhaust Gas Temperature (EGT) Sensor 1 -G236-