Section 12 (1.8L - Exhaust System, Emission Controls - AWD, AWP, AWW Generic (A4 Platform))

• Exhaust System, Emission Controls
  • Exhaust System Components, Removing And Installing
    • Notes
    • Separation point at exhaust pipe
    • Installing muffler free of tension
    • Installation position of double clamp
    • Installation position of muffler suspension
    • Three Way Catalytic Converter (TWC), checking
      • Function test
  • Secondary Air Injection (AIR) System
    • Notes
    • Function
    • Secondary Air Injection (AIR) system components, removing and installing
      • Notes
      • Secondary Air Injection (AIR) Pump Relay -J299-(arrow)
    • Checking secondary air system for proper seal
      • Function test
      • Checking Proper Seal
    • Secondary Air Injection (AIR) valve, checking
      • Notes
      • Recommended special tools and equipment
      • Test requirements
      • Test sequence
    • Secondary Air Injection (AIR) pump motor, checking
      • Recommended special tools and equipment
      • Test requirements
      • Test sequence
    • Combination valve, checking
      • Recommended special tools and equipment
      • Test requirements
      • Test sequence