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Home >> Porsche >> 2019 >> Macan Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (20 Fuel Supply, Actuator 2.9L -- 95B - MACAN (95B)) >> WM, 206601 - Checking Fuel Pump Delivery Rate >> Tools And Materials >> Checking Fuel Pump Delivery Rate

Checking Fuel Pump Delivery Rate

WARNING: This page is about a different car, the 2024 Porsche Macan, 2023 Porsche Macan, 2022 Porsche Macan, 2021 Porsche Macan, and 2020 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Toxic substances 
  • Danger of poisoning or suffocation 
  • Danger of burns to the eyes and skin 
    1. → Ventilate the work area well.
    2. → Never ingest or inhale.
    3. → Read specific information on the Hazard Sheet.
    4. → Wear personal protective gear.
    5. → Do not smoke, eat or d. ink in the work area.
WARNING: Highly inflammable or explosive materials 
  • Danger of fire or explosion 
    1. → Avoid contact with hot parts or sources of ignition.
    2. → Use suction to remove ignitable vapours.
    3. → Attach warning sign in a clearly visible position.
    4. → Contain leaked media using non-flammable absorbent material and put it in a container designed for this purpose for disposal in accordance with local requirements.
    5. → Secure collection containers/vessels to prevent them from tipping over.
  1. Connect a battery charger.
  2. Attach or mount a warning sign > Example of a warning sign  in a clearly visible position on the vehicle.
    G15151836Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Example of a warning sign

  3. Loosen clamp and pull off fuel supply line (low-pressure). Soak up emerging fuel with a cloth.
  4. Connect the tester to the low-pressure hose -2-  on the body side. The setup must be fully sealed.
    G15151837Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Fuel test adapter (shown on Porsche Panamera)

  5. Insert the free end of hose -3-  downstream of the pressure reducer into a larger container.
  6. A second person should monitor possible overfilling of the container and secure it to prevent the canister from falling over.
  7. Connect and prepare the Tester. > 9900 - PIWIS Tester 3 
    1. 7.1  The fuel pump can be activated and deactivated as follows:
    2. 7.2  Under DME,  switch to the Drive links/checks  menu item.
    3. 7.3  Select Drive links  and press F12=Next to confirm.
    4. 7.4  Select the Fuel predelivery pump activation  function and press F12=Next to confirm.
    5. 7.5  Activate the Fuel predelivery pump activation  function by pressing F8=Start Activate the stopwatch at the same time.
    6. 7.6  After 30 seconds, deactivate the Fuel predelivery pump activation  function by pressing F8=Stop.
      1. 7.6.1  Exit the function.
  8. The fuel pump must deliver at least 3 liters a minute. 
  9. Fill fuel from the canister into the fuel tank through the fuel filler pipe.
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