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Home >> Audi >> 2018 >> S3 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 67 (EXHAUST SYSTEM, EMISSION CONTROLS (4-Cylinder 2.0L 4V TFSI Engine) -- (A3 SEDAN)) >> 26 Exhaust System, Emission Controls >> Secondary Air System >> Overview - Secondary Air System

Overview - Secondary Air System

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2017 Audi S3, 2017 Audi RS 3, 2016 Audi S3, 2016 Audi A3, and 2015 Audi S3. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Secondary Air System
GWWA26-11661Courtesy of AUDI OF AMERICA, LLC
  1. Bolt
    • 9 Nm
  2. O-ring
    • Check for damage
    • Included in the delivery package, refer to -item  17-.
    • Coat with engine oil
  3. O-ring
    • Check for damage
    • Included in the delivery package, refer to -item 4- below.
    • Coat with engine oil
  4. Secondary Air Injection Sensor 1 -G609-
  5. O-ring
    • Check for damage
    • Included in the delivery package, refer to -item  16-.
    • Coat with engine oil
  6. Air Filter Housing
  7. O-ring
    • Check for damage
    • Included in the delivery package, refer to -item  16-.
    • Coat with engine oil
  8. Secondary Air Injection Pump Motor -V101-
  9. Bracket
    • On body
  10. Nut
    • 8 Nm
  11. Nut
    • 8 Nm
  12. Bracket
    • For the Secondary Air Injection Pump Motor -V101-
  13. Nut
    • 8 Nm
  14. Rubber Bushing
  15. O-ring
    • Check for damage
    • Included in the delivery package, refer to -item  17-.
    • Coat with engine oil
  16. Suction Line
    • From the air filter housing to the Secondary Air Injection Pump Motor -V101-
  17. Pressure Line
    • From the Secondary Air Injection Solenoid Valve -N112- to the Secondary Air Injection Pump Motor -V101-
  18. Secondary Air Injection Solenoid Valve -N112-
  19. Seal
    • Always replace after removing