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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Fuel Supply System - Engine Code(S): Bar, BHK, BHL, CJWB, CJWC, CJWE, CTWA, CTWB) >> 20 Fuel Supply >> Description And Operation >> EVAP System Overview

EVAP System Overview

WARNING: This page is about a different variant/trim than selected.
Fig 1: Identifying EVAP System Overview
GWWA20-10232Courtesy of AUDI OF AMERICA, LLC
  1. Vent Line
    • To EVAP Canister Purge Regulator Valve 1 -N80-
  2. Vent Line
    • To fuel tank
  3. Vacuum Line
    • Diagnostic pump/engine
  4. Bolt
    • Tightening specification: 1.2 Nm
  5. Gasket
  6. Leak Detection Pump -V144-
    • Installed location: Under wheel housing liner in right rear wheel housing
    • Checking in Guided Functions  using a vehicle diagnostic tester
    • Removing and installing, refer to Leak Detection Pump -V144- 
  7. Connecting Hose
    • Leak diagnosis pump/air filter
  8. EVAP Canister
    • Installed location: Under wheel housing liner in right rear wheel housing
  9. Rubber Grommet
  10. Bushing
  11. Bolt
    • Tightening specification: 9 Nm
  12. Air Filter Housing
    • For the leak detection pump
    • No maintenance schedule