Overview - Emissions Control System

Fig 1: Exploded View Of Emissions Control System

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Turbocharger
   • Refer to Turbocharger, Removing and Installing .
2. Seal
   • Replace after removing
3. Particulate Filter Differential Pressure Sensor -G1037-
   • Refer to Overview - Brackets and Pipes for the Particulate Filter Differential Pressure Sensor  .
   • Refer to PARTICULATE FILTER DIFFERENTIAL PRESSURE SENSOR G1037, REMOVING AND INSTALLING  .
4. Oxygen Sensor 1 Before Catalytic Converter -GX10-
   • With Heated Oxygen Sensor -G39-
   • With Oxygen Sensor Heater -Z19-
   • Refer to OVERVIEW - HEATED OXYGEN SENSOR .
   • Refer to OXYGEN SENSOR 1 BEFORE CATALYTIC CONVERTER GX10, REMOVING AND INSTALLING .
5. Front Exhaust Pipe
   • Depending on the equipment/version
   • With catalytic converter
   • With gasoline particulate filter
   • Refer to Catalytic Converter, Removing and Installing  .
   • Refer to Exhaust System, Installing without Tension  .
6. Clamp
   • Replace after removing
   • Tightening specification and sequence. Refer to Fig 2.
7. Oxygen Sensor 1 after Catalytic Converter -GX7-
   • With Oxygen Sensor After Catalytic Converter -G130-
   • With Heater For Oxygen Sensor 1 after Catalytic Converter -Z30-
   • Refer to OVERVIEW - HEATED OXYGEN SENSOR .
   • Refer to OXYGEN SENSOR 1 AFTER CATALYTIC CONVERTER GX7, REMOVING AND INSTALLING .
8. Bolt
   • 8 Nm
9. Differential Pressure Sensor
10. Bolt
    • Tightening specification and sequence. Refer to Fig 2.
11. Catalytic Converter Bracket
    • Refer to FRONT CATALYTIC CONVERTER/EXHAUST PIPE BRACKET, REMOVING AND INSTALLING  .
12. Rivet
    • Depending on the equipment/version
13. Lock Washer
    • Depending on the equipment/version
14. Bolt
    • 20 Nm
    • Quantity: 2
15. Rubber Bushing
16. Nut
    • Refer to OVERVIEW - HEATED OXYGEN SENSOR .
17. Particulate Filter Differential Temperature Sensor -GX41-
    • With Exhaust Gas Temperature Sensor 3 -G495-
    • With Exhaust Gas Temperature Sensor 4 -G648-
    • Refer to Overview - Exhaust Temperature Regulation  .
    • Refer to EXHAUST GAS TEMPERATURE SENSOR, REMOVING AND INSTALLING, AWD , EXHAUST GAS TEMPERATURE SENSOR, REMOVING AND INSTALLING, FWD  .
    • Refer to EXHAUST GAS TEMPERATURE SENSOR, REMOVING AND INSTALLING, AWD , EXHAUST GAS TEMPERATURE SENSOR, REMOVING AND INSTALLING, FWD  .
18. Clamping Sleeve
    • Refer to Clamping Sleeve Installation Position  .
19. Clip
20. Differential Pressure Sensor
    • Refer to Overview - Brackets and Pipes for the Particulate Filter Differential Pressure Sensor  .
    • Refer to PARTICULATE FILTER DIFFERENTIAL PRESSURE SENSOR G1037, REMOVING AND INSTALLING  .
21. Clamp
22. Bolt
    • 8 Nm
23. Bracket

Catalytic Converter - Tightening Specification and Sequence

Fig 2: Catalytic Converter - Tightening Sequence

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.