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Home >> Porsche >> 2020 >> Taycan 4S >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> 2X Petrol, Exhaust, Engine-Electric - General 2.0L -- Y1A - TAYCAN (Y1A) >> WM, 2X00IN Insulation Troubleshooting >> Measurements >> Measurement 12

Measurement 12

WARNING: Incorrect handling of high-voltage components 
  • Electric shock 
  • Short circuit 
  • Fire 
  • Explosion 

    → Only appropriately trained and authorised persons are permitted to work on high-voltage vehicles and components.

    → Required qualification: High voltage technician or high voltage expert.

    → Observe national requirements and legislation for this work.

    → Always use insulated tools, e.g. > VAS 6883 - Insulated Tool Set  when working on these components.

    → Observe general warning notes for working on the high-voltage system.

    > 2X00IN GENERAL WARNING NOTES FOR WORKING ON THE HIGH-VOLTAGE SYSTEM 

G15552200Courtesy of PORSCHE CARS NORTH AMERICA, INC.

E-box circuit diagram (simplified diagram)

Preliminary work for measurement 12 

(Check: High-voltage line from high-voltage distributor to E-box, E-box and traction line from E-box to rear power electronics)

  1. Dismantle and remove rear loadspace floor.

    > 700619 INSTALLING REAR COVER FOR REAR LUGGAGE COMPARTMENT

  2. Lift up body cover -1-  to allow access to the high-voltage line for the electric motor at the rear using a plastic wedge and remove it.
    G15552201Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Removing body cover

  3. Unscrew fastening screws -1-  for the connection for the rear power electronics traction line and disconnect it.

    Wear gloves with cut protection when loosening and detaching the traction line.

    G15552202Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Rear power electronics traction line

  4. Connect the high-voltage test adapter > VAS 6558A/40 - HV measuring adapter  to high-voltage line (from high-voltage distributor to E-box). Leave the second connection open.
    G15552203Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Measurement 12

  5. Perform measurement 12.
    1. 5.1 Setpoint value ≥ 1.1 MOhm 
  6. Evaluate measured result 
    1. 6.1 If the measured value is within  the tolerance range, continue with measurement 12.2  .
    2. 6.2 If the measured value is outside  of the tolerance range, continue with measurement 12.1  .

    Preliminary work for measurement 12.1 

    (Check: High-voltage line from high-voltage distributor to E-box)

  7. Remove front axle support, rear section.

    > 400819 INSTALL FRONT-AXLE SUPPORT (REAR SECTION) REMOVING AND INSTALLING FRONT AXLE SUPPORT (REAR SECTION)

  8. Disconnect the high-voltage line from the high-voltage distributor to the high-voltage battery on the high-voltage battery. Release - A-  , open -B-  and unplug. -C- 
    G15552204Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Disconnecting the high-voltage line at the high-voltage battery

  9. Connect the high-voltage test adapter > VAS 6558A/40 - HV measuring adapter  to high-voltage line (from high-voltage distributor to E-box). Leave the second connection open.
    G15552205Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Measurement 12.1

  10. Perform measurement 12.1.
    1. 10.1 Setpoint value ≥ 1 GOhm 
  11. Evaluate measured result 
    1. 11.1 If the measured value of measurement 12.1 is within  the tolerance range and the specified measured value for measurement 12 on the negative  line is outside  the tolerance range, continue with measurement 12.2  .
    2. 11.2 If the measured value of measurement 12.1 is within  the tolerance range and the measured value of measurement 12 on the positive  line is outside  the tolerance range, replace E-box.

      After replacing the E-box, repeat measurement 12.

    3. 11.3 If the measured value is outside  of the tolerance range, replace high-voltage line (from high-voltage distributor to E-box).

    After replacing the high-voltage line, repeat measurement 12.

    Preliminary work for measurement 12.2 

    (Check: e-box and traction line from E-box to rear power electronics)

  12. Connect high-voltage test adapter > VAS 6558A/38 - HV test adapter  to the traction line (from E-box to rear power electronics).
    G15552206Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Measurement 12.2

  13. Perform measurement 12.2.
    1. 13.1 Setpoint value ≥ 1.1 MOhm 
  14. Evaluate measured result 
    1. 14.1 If the measured value is within  the tolerance range, continue with measurement 13  .
    2. 14.2 If the measured value is outside  of the tolerance range, continue with measurement 12.3  .

    Preliminary work for measurement 12.3 

    (Check: Traction line from E-box to rear power electronics)

  15. Remove high-voltage battery.

    > 270819 REMOVING AND INSTALLING HIGH-VOLTAGE BATTERY - on "Removing"

  16. Loosen and disconnect traction line (E-box - rear power electronics) at the E-box.
    G15552207Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Traction line (E-box to rear power electronics)

  17. Connect high-voltage test adapter > VAS 6558A/38 - HV test adapter  to the traction line (from E-box to rear power electronics).
    G15552208Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Measurement 12.3

  18. Perform measurement 12.3.
    1. 18.1 Setpoint value ≥ 1 GOhm 
  19. Evaluate measured result 
    1. 19.1 If the measured value is within  the tolerance range, replace E-box.

      After replacing the e-box, repeat measurement 12 and measurement 12.2.

    2. 19.2 If the measured value is outside  of the tolerance range, replace traction line (from E-box to rear power electronics).

After replacing the traction line, repeat measurement 12.2.

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