Fuel Injection System Components, Removing And Installing
Fuel Injection System Components, Removing and Installing
1 - Air cleaner
- Disassembling and assembling.
2 - 6 Nm
3 - 10 Nm
4 - Vacuum connection
- To intake manifold
5 - 40-pin connector
- Only disconnect or connect with ignition switched off
- Release to disconnect
6 - 81-pin connector
- Only disconnect or connect with ignition switched off
- Release to disconnect
7 - Engine control module*
- (Motronic control module - J220)
- Fitting location: In plenum chamber
- Checking voltage supply Refer to "Engine Control Module" Testing and Inspection
- Procedure after voltage supply open circuit, Refer to "Relearn Procedure." Service and Repair
8 - 6-pin connector
- Black for Heated Oxygen Sensor (HO2S) (G39) and oxygen sensor heater (Z19)
- On underside of vehicle
9 - Heated Oxygen Sensor (HO2S) (G39)*, 50 Nm
- With 6 - pin connector
- Location: In catalyst, front
- Grease only the threads with G 052 112 A3, which must not get into the slots on the probe body
- Remove and install with oxygen sensor open ring spanner set 3337
- If replaced, erase learned values and adapt engine control module to throttle valve control module, Refer to "Engine Control Module, Adapting to Throttle Valve Control Module." Service and Repair
- Oxygen sensor heating voltage supply via fuel pump relay (J17)
- Checking oxygen sensor heating before catalyst Refer to "Oxygen Sensor (O2S) Before Catalytic Converter Check" Testing and Inspection
- Checking oxygen sensor and oxygen sensor control before catalyst Refer to "Oxygen Sensor (O2S) Before Catalytic Converter/Sensor and Sensor Control Check" Testing and Inspection
- Checking oxygen sensor aging oxygen sensor 1:
- Engine code AWW, refer to "Oxygen Sensor" Testing and Inspection
- Engine code AWP, refer to "Oxygen Sensor" Testing and Inspection
10 - 4 pin connector
- Black for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC) (G130) and oxygen sensor heater (Z19)
- On underside of vehicle
11 - Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC) (G130)*, 50 Nm
- With 4-pole connector
- Location: Behind catalyst
- Grease only the threads with G 052 112 A3, which must not get into the slots on the probe body
- Remove and install with oxygen sensor open ring spanner set 3337
- If replaced, erase learned values and adapt engine control module to throttle valve control module.
- Oxygen sensor heating voltage supply via fuel pump relay (J17)
- Checking oxygen sensor heating for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC). Refer to "Oxygen Sensor (O2S) Behind Catalytic Converter/Heater Check" Testing and Inspection
- Checking oxygen sensor and oxygen sensor control after catalyst Refer to "Oxygen Sensor (O2S) Behind Catalytic Converter/Sensor and Sensor Control Check" Testing and Inspection
12 - Bracket
- For recirculating valve for turbocharger
- For engine speed sensor
13 - Bracket
- For engine speed sensor
14 - O ring
- Replace if damaged
15 - Engine speed (RPM) sensor (G28)*
- Checking. Refer to "Engine Speed Sensor", Testing and Inspection
16 - 3 pin connector
- Gray
- For engine speed sensor
- Fitting location, engine compartment overview Locations
17 - 20 Nm
18 - 45 Nm
19 - Support
- Between intake manifold and engine block
20 - Charge air pressure sensor (G31)*
- Fitting location, engine compartment overview Locations
- 4 pin connector
- Removing and installing
21 - Intake manifold
22 - Gasket
- Replace
23 - From EVAP canister purge regulator valve (N80)
- Evaporative Emission (EVAP) system
24 - Throttle valve control module (J338)*
- Checking Testing and Inspection
- If replaced match engine control module Refer to "Engine Control Module, Adapting to Throttle Valve Control Module" Service and Repair
- If replaced adapt control module for automatic transmission:
25 - Return pipe
- Secure with spring- type clips
- Check securely seated
- To the fuel delivery unit in fuel tank
26 - Supply pipe/hose
- Secure with spring- type clips
- From fuel filter
27 - Fuel rail with injectors
- Disassembling and assembling.
28 - Intake Air Temperature (IAT) sensor (G42)*
- Checking Testing and Inspection
29 - To pipe between turbo charger and charge air cooler
30 - To pipe between turbo charger and charge air cooler
31 - To turbocharger
32 - From crankcase breather
- Valve cover
33 - From crankcase breather
- Oil filter bracket
34 - Engine Coolant Temperature (ECT) sensor (G62)*
- For engine control module
- With coolant temperature gauge sender (G2)
- Checking Testing and Inspection
- 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 seated securely
37 - To recirculating valve for turbocharger (N249)
- Refer to item 24 Locations
38 - To pressure unit on turbocharger
39 - Wastegate bypass regulator valve (N75)*/**
- Charge pressure system:
40 - Intake hose
41 - Mass Air Flow (MAF) sensor (G70)*
- Checking Testing and Inspection
- 5 pin connector