Fuel Injection System Components, Removing And Installing
Parts Of Fuel Injection System, Removing And Installing
1 Air filter housing
2 6 Nm
3 10 Nm
4 Vacuum pressure connection
- to intake manifold
5 Connector, 40-pin
- Switch ignition off before disconnecting or connecting connector
- disengage to pull off
6 Connector, 81-pin
- Switch ignition off before disconnecting or connecting connector
- disengage to pull off
7 Engine Control Module (ECM)*
(Motronic Engine Control Module (ECM) -J220-)
- Component location: in plenum chamber
- Checking voltage supply
8 Harness connector
Vehicles with engine code AWD:
- 4-pin harness connector, black for Heated Oxygen Sensor (HO2S) -G39- and oxygen sensor heater
- At vehicle underside
Vehicles with engine code AWP, AWW:
- 6-pin harness connector, black for Heated Oxygen Sensor (HO2S) -G39- and oxygen sensor heater
- At vehicle underside
9 Heated Oxygen Sensor (HO2S) -G39- bank 1*, 50 Nm
- Component location: in front catalytic converter
- 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)
10 4-pin harness connector
- black for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- and Oxygen Sensor (O2S) Heater -Z19-
- At vehicle underside
11 Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- bank 1*, 50 Nm
- Component location: In rear catalytic converter
- 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)
12 Bracket
- for recirculating valve for turbocharger
- for Secondary Air Injection (AIR) solenoid valve
13 Bracket
- for engine speed (RPM) sensor
14 O-ring
- Replace if damaged
15 Engine Speed (RPM) Sensor -G28-*
16 3-pin harness connector
- gray
- for engine speed (RPM) sensor
- Component location, engine compartment overview
17 20 Nm
18 45 Nm
19 Brace
- between intake manifold and engine block
20 Charge Air Pressure Sensor -G31-*
- 4-pin connector
21 Intake manifold
22 Seal
23 To Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-
24 Throttle Valve Control Module -J338-*
25 Return line
- secure with spring type clamps
- Check for secure fitting
- to fuel delivery unit in fuel tank
26 Supply line
- secure with spring type clamps
- from fuel filter
27 Fuel rail with fuel injectors
28 Intake Air Temperature (IAT) Sensor -G42-*
29 to tube between turbocharger and charge air cooler
30 to tube between turbocharger and charge air cooler
31 To turbocharger
32 to crankshaft housing ventilation
- Cylinder head cover
33 to the crankshaft housing ventilation
- Oil filter bracket
34 Engine Coolant Temperature (ECT) Sensor -G62-*
- for Engine Control Module (ECM)
- with Engine Coolant Temperature (ECT) Sensor -G2-
- If necessary, release pressure in cooling system before removing
35 Connector
- Black, 4-pin
- for Engine Coolant Temperature (ECT) Sensor -G62-
36 Retaining clip
- Check for secure fitting
37 To Recirculating valve for turbocharger -N249-
Vehicles with engine code AWD:
- Overview plan of exhaust turbocharging system
Vehicles with engine code AWP, AWW:
- Overview plan of exhaust turbocharging system
38 to vacuum diaphragm at turbocharger
Vehicles with engine code AWD:
- Overview plan of exhaust turbocharging system
Vehicles with engine code AWP, AWW:
- Overview plan of exhaust turbocharging system
39 Wastegate Bypass Regulator Valve -N75-*
40 Intake hose
41 Mass Air Flow (MAF) Sensor -G70-*
- 5-pin connector