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Home >> Porsche >> 2023 >> Cayenne Base, 4D Utility Coupe >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (47 Brakes - Brake Hydraulic System, Regulator, Booster 2.9L -- 9YA - Cayenne (9YA)) >> WM, 477601 Check Brake Booster Vacuum Pump >> Check Brake Booster Vacuum Pump

Check Brake Booster Vacuum Pump

WARNING: This page is about a different variant/trim than selected.
CAUTION: Hot components 
  • Risk of burns 
    1. → Let hot components cool down.
    2. → Wear personal protective gear.
  1. Pull off vacuum hose -3-  (quick connector) on the -1-  vacuum pump.
    G15292534Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Vacuum pump BKV

  2. > VAS 6213 - Connect the hand vacuum pump-1-  with a suitable hose (accessory) -2-  to the vacuum connection -3-  of the vacuum pump.

    Information: accessibility to the hose connection is somewhat difficult. 

    G15292535Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Vacuum pump 6213 on vacuum pump (diagram on V8-engine)

  3. Check the vacuum pump.
    1. 3.1  Lift the lever on the vacuum tester to Open (vacuum).
    2. 3.2  Start the engine and let it run at idle speed at slightly varying revs.
    3. 3.3  Check for a vacuum of at least 500 mbar or 0.5 bar.
    4. 3.4  If the vacuum is not maintained, the vacuum pump is defective.
  4. Replacing defective vacuum pump.
  5. Remove the tool and hose after the test.