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Home >> Porsche >> 2019 >> Cayenne S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 34 (20 Fuel Supply, Actuator 4.0L -- 9YA - Cayenne (9YA)) >> WM, 206601 Checking Fuel Pump Delivery Rate >> Checking Fuel Pump Delivery Rate

Checking Fuel Pump Delivery Rate

WARNING: This page is about a different variant/trim than selected.
  1. Switch on and connect > 9900 - PIWIS Tester 3  .
  2. Switch on ignition (fuel pump comes on briefly).
  3. Drain the canister.
  4. Test the fuel pump delivery rate using > 9900 - PIWIS Tester 3  .
    1. 4.1  Select the Diagnostics  function.
    2. 4.2  Select the Engine electronics  control unit in the control unit overview and press F12=Next to confirm your selection.
    3. 4.3 
    4. 4.4  Under DME,  switch to the Drive links/checks  menu item.
    5. 4.5  Select Drive links  and press F12=Next to confirm.
    6. 4.6  Select the Fuel predelivery pump activation  function and press F12=Next to confirm.
    7. 4.7  Have a stopwatch ready.
    8. 4.8  Activate the Fuel predelivery pump activation  function by pressing F12=Next Activate the stopwatch at the same time.
    9. 4.9  After 30 seconds, deactivate the Fuel predelivery pump activation  function by pressing F8=Stop
    10. 4.9.1  Exit the function.
    11. 4.10  Read off the delivery rate.
      1. 4.10.1  Guide hose out of the canister.
      2. 4.10.2  Pour the fuel from the canister into the measuring cup and read off the fuel quantity. Minimum supply rate for a measuring time of 60 seconds: 3 litres 
    12. 4.11  Switch off ignition, switch off > 9900 - PIWIS Tester 3  and disconnect adapter line in the vehicle.
  5. Fill fuel from the canister into the fuel tank through the fuel filler pipe.
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