EVAP System Function Overview

2009 Volkswagen GTI 2D Hatchback, 2.0 D, Automatic DCTSECTION EVAP System Function Overview
Fig 1: Identifying Function Overview: EVAP Canister System
GWWN20-10399Courtesy of VOLKSWAGEN UNITED STATES, INC.
  1. Evaporative Emission (EVAP) Canister 
  2. Adapter for Evaporative Emission Tester -KLI 9210/55-1 Installed Location 
    • Used the fuel system leak test.
  3. EVAP Canister Purge Regulator Valve 1 -N80- 
  4. Vent Line 
    • For the throttle valve control module -J338-.
  5. Solenoid Valve 
    • For the leak detection pump.
  6. Vacuum Line 
    • To the intake manifold.
  7. Air Filter Housing 
    • For the leak detection pump.
  8. Leak Detection Pump -V144- 
  9. Fuel Tank 
  10. Cap 
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.