Exhaust Pipe: Locations
Exhaust Manifold, Front Exhaust Pipes With Three Way Catalytic Converters (TWC) And Front Mufflers, Assembly Overview
NOTE:
- Components marked with * are tested via On Board Diagnostic (OBD), Diagnostic mode 3: Check DTC memory.
- Front exhaust pipes with Three Way Catalytic Converters (TWC) and front mufflers, removing and installing.
1 - Connector
- Brown, 6-pin
- Connector terminals are gold-plated
- For Heated Oxygen Sensor (HO2S) 2 -G108-
- Component location of harness connector => Fig. 1
2 - Heated Oxygen Sensor (HO2S) 2 -G108-*, 50 Nm
- In exhaust gas stream of cylinders 4, 5 and 6
- Only grease threads with G 052 112 A3 locking compound, do NOT allow locking compound to get into slots on sensor body
- remove and install using ring spanner 7-piece set (3337) for oxygen sensor
- Check oxygen sensor heater for oxygen sensors before Three Way Catalytic Converter (TWC)
- Check Oxygen Sensors (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC)
3 - Mounting nuts
- Replace
- M8: 25 Nm
- M10: 40 Nm
4 - Connector
- Black, 6-pin
- Connector terminals are gold-plated
- For Heated Oxygen Sensor (HO2S) -G39-
- Component location of harness connector => Fig. 1
5 - Heated Oxygen Sensor (HO2S) -G39-*, 50 Nm
- In exhaust gas stream of cylinders 1, 2 and 3
- Only grease threads with G 052 112 A3 locking compound, do NOT allow locking compound to get into slots on sensor body
- remove and install using ring spanner 7 - piece set (3337) for oxygen sensor
- Check oxygen sensor heater for oxygen sensors before Three Way Catalytic Converter (TWC).
- Check Oxygen Sensors (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC).
6 - Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131-*, 50 Nm
- In exhaust gas stream of cylinders 4, 5 and 6
- Only grease threads with G 052 112 A3 locking compound, do NOT allow locking compound to get into slots on sensor body
- remove and install using ring spanner 7 - piece set (3337) for oxygen sensor
- Check oxygen sensor heater for Oxygen Sensors (O2S) behind Three Way Catalytic Converter (TWC)
- Check Oxygen Sensors (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC)
7 - Connector
- Black, 4 - pin
- Connector terminals are gold-plated
- For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
- Component location of harness connector => Fig. 1
8 - Connector
- Brown, 4 - pin
- Connector terminals are gold-plated
- For Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131-
- Component location of harness connector => Fig. 1
9 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-*, 50 Nm
- In exhaust gas stream of cylinders 1, 2 and 3
- Only grease threads with G 052 112 A3 locking compound, do NOT allow locking compound to get into slots on sensor body
- remove and install using ring spanner 7 - piece set (3337) for oxygen sensor
- Check oxygen sensor heater for Oxygen Sensors (O2S) behind Three Way Catalytic Converter (TWC)
- Check Oxygen Sensors (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC)
10 - Heat shield
11 - Intake manifold support
12 - 20 Nm
13 - Gasket
- Replace
14 - Exhaust manifold
15 - 25 Nm
- Replace
16 - Front muffler
17 - To center muffler
18 - 25 Nm
19 - Mount
- For front exhaust pipe at left and right
20 - Catalytic converter
- For some vehicles, there is an additional oxygen sensor installed behind Three Way Catalytic Converters (TWC). Both sensors are actually connected but do not function.
- Check catalytic converter
21 - Primary catalytic converter
- Check catalytic converter.
Fig. 1 Component location of oxygen sensors, harness connectors
1 - 6-pin harness connector, black:
For Heated Oxygen Sensor (HO2S) -G39-
2 - 4-pin harness connector, black
For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
3 - 6-pin harness connector, brown
For Heated Oxygen Sensor (HO2S) 2 -G108-
4 - 4-pin harness connector, brown
For Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131-