31/10/2024 09:44:45

Bed and Backbone Harnesses - Harness - MV Backbone (Remove and Install)

Correction code 1710013031 1710013032 FRT 1.14 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.

  • 2024-10-31: Updated to the latest time study. Added steps to remove the front passenger seat.
  • 2024-10-14: Updated to the latest time study. Added step to install abrasion protection along entire length of harness.
  • 2024-09-11: Added note and link for testing and servicing Super Connectors.
  • 2024-08-20: Added steps to align cable over rear rib and check for and install seam protection.
  • 2024-07-05: Added steps to install harness guide.
  • 2024-05-29: Updated locking torque value from 4 Nm to 6 Nm. Added a step apply anti-abrasion tape to the FFC during installation.
  • 2024-04-09: Added note and image for backbone harness routing direction.
  • 2024-03-12: Cleaned up topic.
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Warning
This procedure is a DRAFT. Although it has been validated, Warnings and Cautions might be missing. Follow safety requirements and use extreme caution when working on or near High Voltage systems and components. Provide corrections and feedback to ServiceDevelopment@teslamotors.com.
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Note
For best practices associated with testing and servicing Super Connectors on a Cybertruck Vehicle Controller, refer to video Super Controller Testing.
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Warning
Cybertruck electronics are powered by a 48V "mid voltage" or "MV" architecture that is designed to improve efficiency. Servicing MV components requires extra knowledge and care in order to avoid personal and/or vehicular harm. Read and understand MV precautions in Electrical Precautions and make sure any required MV-related training courses have been completed, as applicable.

Remove

  1. Open all the doors and lower all the windows.
  2. Remove the front floor mats.
  3. Remove the RH 1st row seat assembly. See Front Seat Assemblies - 1st Row Seat Assembly - LH Drive - RH - Black (Remove and Install).
  4. Remove the front passenger carpet assembly. See Passenger Compartment Carpet - End Item, Passenger Carpet Assembly, Soft Trim (Remove and Install).
  5. Release the clip that attaches the RH 2nd row floor duct to the vehicle, and then remove the duct from the vehicle.
  6. Slowly loosen the bolt that secures the locking cover to the RH controller, making sure that the cover separates from the controller squarely, and does not bind.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 8 mm socket
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    CAUTION
    Do not remove the locking cover.
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    Note
    Do not remove locking cover. Loosen until the bolt spins freely.
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    Note
    Make sure the bolt and locking cover are fully released before attempting to release the connectors.
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    Note
    If the cover binds, tighten the bolt until the locking cover is square again, then loosen the bolt while holding the cover square to the controller.
    Informational PurposesAn informational icon, calling your attention
    Note
    Use a power tool to loosen the bolt.
    Figure 1. Rear MV controller shown; other MV controllers similar
  7. Disconnect the backbone harness from the RH MV controller.
  8. If the vehicle is equipped with an MV backbone harness guide, continue to the next step. If the vehicle is not equipped with an MV backbone harness guide, skip to step 11.
  9. Release the clips that attach the MV backbone harness guide to casting, and then cut the electrical tape to remove the harness from the guide.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Be careful not to damage the harness while removing it from the harness guide.
  10. Release the harness clips (x3) that attach the backbone harness and cabin floor harness to the vehicle, and then feed the backbone harness under the cabin floor harness to release the front section of the backbone harness.
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    Note
    The foremost clip will not be present if the vehicle is equipped with a backbone harness guide.
  11. Remove the rear wall lower trim. See Passenger Compartment Carpet - End Item, Rear Wall Lower Trim, Soft Trim (Remove and Install).
  12. Fold the rear carpet and hold the EPP up temporarily.
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    Note
    Use inflatable air bags or wheel chocks to suspend EPP.
  13. Slowly loosen the bolt that secures the locking cover to the rear MV controller, making sure that the cover separates from the controller squarely, and does not bind.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 8 mm socket
    Informational PurposesAn informational icon, calling your attention
    Note
    Do not remove locking cover. Loosen until the bolt spins freely.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure the bolt and locking cover are fully released before attempting to release the connectors.
    Informational PurposesAn informational icon, calling your attention
    Note
    If the cover binds, tighten the bolt until the locking cover is square again, then loosen the bolt while holding the cover square to the controller.
    Informational PurposesAn informational icon, calling your attention
    Note
    Use a power tool to loosen the bolt.
    Figure 2. Rear MV controller shown; other MV controllers similar
  14. Disconnect backbone harness from rear MV controller.
  15. Release the backbone harness clips (x6), and then remove the backbone harness from the vehicle.
    Informational PurposesAn informational icon, calling your attention
    Note
    Pull the harness through toward the 2nd row when removing from vehicle.

Install

  1. If missing, apply backbone harness abrasion protection along the harness routing to cover the seams.
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    Note
    Abrasion tape should be present in the 6 locations highlighted in the reference image.
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    Note
    Apply narrow patch to the foremost position between the shoulder bracket ribs.
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    Note
    Abrasion protection tape dimensions is as follows:
    • Wide patch dimensions: 50mm wide, 150mm long (PN: 1879451-99-A - LV ABRASION STICKER,XM,HVB,CTSB)
    • Narrow patch dimensions: 25.4mm wide, 235mm long (PN: 1908543-99-A - LV ABRASION STICKER,SHOULDER BRACKET,HVB,CTSB)
    Informational PurposesAn informational icon, calling your attention
    Note
    Skip this step if the abrasion protection is already present and installed correctly.
  2. Install the backbone harness, and then secure it with harness clips (x6).
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    Note
    Push the harness through to the 1st row front passenger seat.
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    Note
    Make sure the harness is routed to the LH side of the cast ribbing.
  3. Connect backbone harness to the rear MV controller.
  4. Slowly tighten the bolt that secures the locking cover to the rear MV controller, making sure that the cover is square to the controller, and does not bind.
    6 Nm (4.4 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 8 mm socket
    Informational PurposesAn informational icon, calling your attention
    Note
    If the cover binds, loosen the bolt until the locking cover is square again, then tighten the bolt while holding the cover square to the controller.
    Informational PurposesAn informational icon, calling your attention
    TIp
    While tightening the bolt, press the connector into the controller to keep it square.
    Figure 3. Rear MV controller shown; other MV controllers similar
  5. Inspect for any misalignment at rear ribs and apply abrasion tape if missing.
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    Note
    Make sure the cable lays flat and is not twisted.
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    Note
    Apply surface protection at the seam of the rearmost rib under backbone cable if missing. Use black anti-abrasion tape (PN: 1879451-99-A) if available. If black anti-abrasion tape is available, remove the red 3M VHB tape, and then apply the black anti-abrasion tape. If black anti-abrasion tape is not available, apply the red 3M VHB tape (PN: 1879451-00-B) over exposed seams.
  6. Fasten the clips (x3) that attach the front section of the backbone harness.
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    Note
    Pass the connector under the cabin floor harness.
  7. Connect the backbone harness to the RH MV controller.
  8. Slowly tighten the bolt that secures the locking cover to the upper RH MV controller, making sure that the cover is square to the controller, and does not bind.
    6 Nm (4.4 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 8 mm socket
    Informational PurposesAn informational icon, calling your attention
    Note
    If the cover binds, loosen the bolt until the locking cover is square again, then tighten the bolt while holding the cover square to the controller.
    Informational PurposesAn informational icon, calling your attention
    TIp
    While tightening the bolt, press the connector into the controller to keep it square.
    Figure 4. Rear MV controller shown; other MV controllers similar
  9. Remove any remaining tape from the casting and backbone harness.
  10. Remove and discard the front casting clip.
  11. Install the backbone harness guide onto the front casting.
  12. Position the backbone harness so that it lays flat on the harness guide, and then mark the positions at the front and rear edges of the harness guide on the harness.
    Informational PurposesAn informational icon, calling your attention
    Note
    Push the backbone harness flat starting at lower edge. Make alignment marks from the backbone harness to the guide at the bottom then the top while pushing the backbone harness flat.
  13. Remove the backbone harness guide from the casting once marked.
  14. Starting from the lower edge of the harness guide, install the backbone harness onto the harness guide using the alignment marks made in the previous steps, and then use electrical tape to secure the harness to the guide.
    Informational PurposesAn informational icon, calling your attention
    Note
    Refer to the image for electrical tape positions (x3).
    Figure 5. Electrical tape positions
  15. Secure the backbone harness and harness guide to the front casting.
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    Note
    Make sure the rib groove is aligned and engaged correctly. Lower engagement will make an audible click when secured.
  16. Position the RH 2nd row floor duct into the vehicle, and then secure the clip that attaches the duct to the vehicle.
  17. Install the front passenger carpet assembly. See Passenger Compartment Carpet - End Item, Passenger Carpet Assembly, Soft Trim (Remove and Install).
  18. Install the rear wall lower trim. See Passenger Compartment Carpet - End Item, Rear Wall Lower Trim, Soft Trim (Remove and Install).
  19. Install the RH 1st row seat assembly. See Front Seat Assemblies - 1st Row Seat Assembly - LH Drive - RH - Black (Remove and Install).
  20. Install the front floor mats.
  21. Raise all the windows and close all the doors.