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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 8

Measurement 8

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 

Preliminary work for measurement 8 

(Check: Traction line from high-voltage distributor to front power electronics)

  1. Remove high-voltage distributor.

    > 279819 REMOVING AND INSTALLING HIGH-VOLTAGE DISTRIBUTOR - on "Removing"

  2. Remove high-voltage distributor mounting.

    > 271719 REMOVING AND INSTALLING HIGH-VOLTAGE DISTRIBUTOR MOUNTING - on "Removing"

  3. Unscrew, disconnect and remove traction line (high-voltage distributor to front power electronics) at the front power electronics.
    G15552178Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Traction line from high-voltage distributor to front power electronics

  4. Connect traction line (from high-voltage distributor to front power electronics) to high-voltage test adapter > VAS 6558A/38 - High-voltage test adapter  .
    G15552179Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Measurement 8

  5. Perform measurement 8.
    1. 5.1 Setpoint value ≥ 1 GOhm 
  6. Evaluate measured result 
    1. 6.1 If the measured value is within  the setpoint value range, continue with measurement 8.1  .
    2. 6.2 If the measured value is outside  of the setpoint value range, replace high-voltage line (from front power electronics and electric drive motor).

    After replacing the high-voltage line, repeat measurement 6.

    Preliminary work for measurement 8 

    (Check: Front power electronics with connected and tested traction line)

  7. Remove electric drive motor and front power electronics.

    > 278919 REMOVING AND INSTALLING ELECTRIC DRIVE MOTOR - on "Removing"

    Taycan 4S and Taycan Turbo, continue with Step 8.

    For Taycan Turbo S, continue with Step  9.

  8. Disconnect power electronics from electric drive motor.

    > 279119 REMOVING AND INSTALLING FRONT POWER ELECTRONICS FOR HIGH-VOLTAGE SYSTEM

  9. Remove cover for electric drive motor.
    G15552180Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Cover for electric drive motor

  10. Remove 3-phase current rail (front power electronics to electric drive motor).
    G15552181Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    3-phase line power track (front power electronics to electric drive motor)

  11. Disconnect CAN lines from the power electronics.
    G15552182Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Electric connectors

    1. 11.1 Using a small screwdriver, release the electric connectors -1-  and -2- carefully  (-a-  ) and pull them out of the connector housing. Important: The connector holders can break easily.

    All vehicles:

  12. Connect traction line and high-voltage test adapter > VAS 6558A/38 - High-voltage measuring adapter  to the front power electronics.
    G15552183Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Measurement 8.1

  13. Perform measurement 8.1.
    1. 13.1 Setpoint value ≥ 5 MOhm 
  14. Evaluate measured result 
    1. 14.1 If the measured value is within  the tolerance range, continue with measurement 8.2  .
    2. 14.2 If the measured value is outside  of the tolerance range, replace front power electronics.

      When replacing the front power electronics, read and follow the work instructions in the Service Information.

      > 27911940 REMOVING AND INSTALLING FRONT POWER ELECTRONICS

      After replacing the front power electronics, repeat measurement 6.

    Preliminary work for measurement 8.2 

    (Check: electric drive motor)

  15. Place test probes on terminal shoes of the 3-phase line and measure the resistance to the electric drive motor housing.

    Measure all 3-phase lines individually.

    G15552184Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Measurement 8.2

  16. Perform measurement 8.2.
    1. 16.1 Setpoint value ≥ 5 MOhm 
  17. Evaluate measured result 
    1. 17.1 If the measured value is within  the tolerance range, contact Technical Support.
    2. 17.2 If the measured value is outside  of the tolerance range, replace electric drive motor.

      When replacing the electric drive motor, read and follow the work instructions in the Service Information.

      > 278919 REMOVING AND INSTALLING ELECTRIC DRIVE MOTOR

      After replacing the electric drive motor, repeat measurement 6.

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