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Home >> Porsche >> 2000 >> Boxster Base, Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> DME 7.2 - 911 CARRERA & BOXSTER >> DTC P0442: Fuel Tank Ventilation System (Micro-leak) - Below Limit >> Diagnosis Procedure >> Check shutoff valve for leaks

Check shutoff valve for leaks

  1. Remove front right-hand wheel housing liner.
  2. Detach connector of shutoff valve.
  3. Detach ventilation line of shutoff valve.
  4. Connect shutoff valve to the battery or a separate power supply unit via special tool V.A.G. 1315A/1.
    NOTE: Do not actuate the shutoff valve for more than 5 minutes (overload).
  5. Connect special tool 9160/1 to EVAP canister.
    Fig 1: Connecting Special Tool 9160/1 To EVAP Canister
    G02534093Courtesy of PORSCHE OF NORTH AMERICA, INC.
  6. Using special tool 9160/1, generate a vacuum of 100 mbar (0.1 bar).
    NOTE: Do not produce a vacuum of more than 100 mbar, as otherwise the vacuum will cause the shutoff valve to open.

    If no vacuum can be built up, replace the shutoff valve.

    Coat the sealing ring of the new shutoff valve with tyre fitting lubricant prior to installation.

    The shutoff valve can only be installed in one position: with the electrical connection facing upwards.

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