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Home >> Porsche >> 2019 >> 718 Boxster Base, Automatic DCT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (20 Fuel Supply, Actuator 2.5L -- 982 - BOXSTER/CAYMAN) >> WM, 201001 - Leak Test On Fuel Tank >> Leak Test >> Leak Test On Fuel Tank

Leak Test On Fuel Tank

WARNING: This page is about a different variant/trim than selected.
WARNING: Highly inflammable or explosive materials 
  • Danger of fire or explosion 
    • → Avoid contact with hot parts or sources of ignition.
    • → Use suction to remove ignitable vapours.
    • → Attach warning sign in a clearly visible position.
    • → 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.
    • → Secure collection containers/vessels to prevent them from tipping over.

Information 

  1. Attach warning sign -1  - in a clearly visible position on the vehicle or position it in the immediate working area.
    G14945572Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Information 

    • Perform the leak test using the Tester routine without battery charger! 
  2. Perform fuel tank leak test using the PIWIS Tester  in 2 steps  .
    1. 2.1 Step 1: Verify leak. 
    2. 2.2 Step 2: Verify leak-tightness. 
  3. Carry out the instructions shown on the Tester for Step 1 (Verify leak)  .
    1. 3.1 Connect the PIWIS Tester in the vehicle and carry out preparatory steps:
      • Remove fuel tank cap. 
      • Select DME  control unit.
      • Read out the fault memory. There must be no  fault memory entries! If there are fault memory entries → Erase DME fault memory  .
      • Select the Maintenance/repairs  menu.
      • Select the sub-menu item Tank leak test  .
      • Observe information and preconditions!  => Press F8 to start.
    2. 3.2 At the end of Step 1, read out the fault memory. Since the tank filler neck is open, you can expect one of the following fault entries:
      • P0456 
      • P0442 
      • P0455 
    3. 3.3 If there are no fault entries, the diagnostic line is blocked/closed.

      => Clean or replace the line! 

    4. 3.4 If there are fault entries => Clear the fault memory! 
  4. Continue the test with Step 2 (Verify leak-tightness)  and carry out the instructions shown on the Tester.
    1. 4.1 Connect the PIWIS Tester in the vehicle and carry out preparatory steps:
      • Close the fuel tank cap again. 
      • Select DME  control unit.
      • Select the Short tests  menu.
      • Select the sub-menu item Tank leak test  .
      • Observe information and preconditions!  => Press F8 to start.
    2. 4.2 At the end of Step 2, read out the fault memory.

      => No faults = System OK! 

    3. 4.3 If there are fault entries, correct faults as instructed (guided fault finding).
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