23/05/2024 08:17:47

HV Harness - HV Battery to Rear Drive Unit (Remove and Replace)

Correction code 44502202 1.32 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 proper PPE is worn when performing the below procedure.

  • 2024-01-12: All-new procedure made vehicle agnostic.
Warning IconA warning icon, calling your attention to a possibly risky situation
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.

Remove

  1. Move the vehicle to a 2 post lift. See Raise Vehicle - 2 Post Lift.
  2. Remove the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
  3. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Install).
  4. Disconnect LV power. See LV Power (Disconnect and Connect).
  5. Set the high voltage multimeter to DC voltage, lightly touch the probes to the auxiliary battery connector contacts, and verify that the multimeter displays a voltage.
    Informational PurposesAn informational icon, calling your attention
    Note
    Battery voltage is typically 14.5 to 15.5 volts.
  6. Remove the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
  7. Perform Vehicle HV Disablement Procedure. See Vehicle HV Disablement Procedure.
  8. Slide the red connector locking tab, open the black release lever, and then disconnect the HV battery to rear drive unit HV harness from the HV battery LH HV header.
  9. Remove the leather glove protectors and HV insulating gloves.
  10. Position a coolant drain collector underneath the rear drive unit inverter.
  11. Release the clip, disconnect the powertrain coolant supply hose from the rear drive unit inveter inlet, and immediately plug both fittings.
  12. Move the coolant drain collector out from under the rear drive unit inverter.
  13. Press the locking tab, raise the handle, and disconnect the rear subframe electrical harness from the logic connector, then release the clip that attaches the electrical harness to the LH side of the rear drive unit, and move the electrical harness aside.
  14. Remove the nut that attaches the HV battery to rear drive unit HV harness stud to the rear drive unit.
    Tip: Use of the following tool(s) is recommended:
    • 10 mm deep socket
  15. Remove the bolt that attaches the HV battery to rear drive unit HV harness to the rear drive unit.
    Tip: Use of the following tool(s) is recommended:
    • 10 mm deep socket
  16. Slide the red connector locking tab, open the black release lever, and then disconnect the HV battery to rear drive unit HV harness from the rear drive unit inverter HV header.
  17. Position a pole jack to raise and support the rear of the rear drive unit.
  18. Remove the bolt that attaches the rear of the rear drive unit to the rear subframe.
    Tip: Use of the following tool(s) is recommended:
    • External Torx E18
    Informational PurposesAn informational icon, calling your attention
    Note
    Adjust pole jack as needed to unload bolt and ease removal.
  19. Use the pole jack to raise the rear drive unit enough to allow clearance for HV battery to rear drive unit HV harness removal.
  20. With the help of an assistant, move the HV battery to rear drive unit HV harness to the left to remove the harness datum and stud from the rear drive unit casing, and then move the harness down and out from the drive unit.

Install

  1. With the help of an assistant, move the HV battery to rear drive unit HV harness in and up against the rear drive unit, and then move the harness to the right to install the harness datum and stud into the drive unit casing.
  2. Lower pole jack enough to align the rear of the rear drive unit and the rear subframe.
  3. Install the bolt that attaches the rear of the rear drive unit to the rear subframe.
    120 Nm (88.5 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    Note
    Adjust pole jack as needed to ease installation.
    Tip: Use of the following tool(s) is recommended:
    • External Torx E18
  4. Remove the pole jack from under the vehicle.
  5. Verify that the black release lever of the HV battery to rear drive unit HV harness connector is in the open position, install the connector flat and square to the rear drive unit inverter HV header, secure the release lever to the closed position, and then slide the red connector locking tab.
  6. Install the bolt that attaches the HV battery to rear drive unit HV harness to the rear drive unit.
    6 Nm (4.4 lbs-ft)
    Tip: Use of the following tool(s) is recommended:
    • 10 mm deep socket
  7. Install the nut that attaches the HV battery to rear drive unit HV harness stud to the rear drive unit.
    6 Nm (4.4 lbs-ft)
    Tip: Use of the following tool(s) is recommended:
    • 10 mm deep socket
  8. Verify that the black release lever of the HV battery to rear drive unit HV harness connector is in the open position, install the connector flat and square to the HV battery LH HV header, secure the release lever to the closed position, and then slide the red connector locking tab.
  9. Position the coolant drain collector underneath the rear drive unit inverter.
  10. Remove the plugs, immediately connect the powertrain coolant supply hose to the rear drive unit inveter inlet, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
  11. Move the coolant drain collector out from under the rear drive unit inverter.
  12. Connect the rear subframe electrical harness to the rear drive unit inverter logic connector, raise the handle upward, and fasten the locking tab, and then fasten the clip that attaches the electrical harness to the LH side of the rear drive unit.
  13. Install the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
  14. Connect LV power. See LV Power (Disconnect and Connect).
  15. Perform a cooling system air purge. See Cooling System (Partial Refill and Bleed).
  16. Install the underhood storage unit. See Underhood Storage Unit (Remove and Install).
  17. Install the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
  18. Remove the vehicle from the 2 post lift. See Raise Vehicle - 2 Post Lift.