2026-08-09

高压线束 - 高压电池至后驱动电机 (4DU)（拆卸和更换）

校正代码 44502222 0.66 NOTE: Unless otherwise explicitly stated in the procedure, the correction code and its associated 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. NOTE: See 人员保护 to make sure wearing proper PPE when performing the below procedure. NOTE: See 人体工程学注意事项 for safe and healthy working practices.

警告
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.

拆卸

  1. Move the vehicle to a 2 post lift. See 举升车辆 - 双柱举升机.
  2. Enable Service Mode on the touchscreen. See 维护模式.
  3. Remove the rear underhood apron. See 前备箱挡板 - 后部（拆卸和更换）.
  4. Remove the cabin intake duct. See 槽 - 上部 - 驾驶室进气（拆卸和更换）.
  5. Disconnect LV power. See 12V/低压电源（断开和连接）.
  6. Perform Vehicle HV Disablement Procedure. See 车辆高压禁用程序.
  7. Remove the mid aero shield panel. See 面板 - 流线型护板 - 后部（拆卸和更换）.
  8. Release the clips (x4) that attach the coolant hoses to the rear skid plate.
    注
    Clip quantity varies with older vehicles.
  9. Remove the HV battery rear skid plate. See 滑板 - 高压电池 - 后部（拆卸和更换）.
  10. Position a coolant drain collector underneath the LH rear of the HV battery.
  11. Release the clip, disconnect the rear drive unit inverter inlet hose from the HV battery, and then immediately plug both fittings.
  12. Release the clip, disconnect the rear drive unit inverter inlet hose from the rear drive unit inverter, and then immediately plug both fittings.
  13. Release the clip that attaches the rear drive unit inverter inlet hose from rear drive unit HV harness.
  14. Remove the rear drive unit inverter inlet hose down and out from between the rear subframe and the HV battery.
  15. Remove the bolt that attaches the rear drive unit HV harness bracket to the rear drive unit inverter.
  16. Slide the locking tab, raise the black handle, disconnect the rear drive unit HV harness from the rear drive unit inverter HV header,and then set the HV harness aside.
  17. Remove the nut(s) that attach(es) the rear drive unit HV harness bracket to the HV battery.
  18. Slide the red locking tab, raise the black handle, and then disconnect the rear drive unit HV harness from the HV battery header.
  19. Remove the rear drive unit HV harness down and out from between the rear subframe and the HV battery.
    注
    Rotate the harness as it is removed to allow access for the bracket.

安装

  1. Install the rear drive unit HV harness in and up between the rear subframe and the HV battery.
    注
    Rotate the harness as it is installed to allow access for the bracket.
  2. Verify that the black release lever of the rear drive unit HV harness connector is in the open position, install the connector flat and square to the HV battery header, secure the release lever to the closed position, and then slide the red connector locking tab.
  3. Install the nut(s) that attach(es) the rear drive unit HV harness bracket to the HV battery.
    10 Nm (7.4 lbs-ft)
  4. Verify that the black release lever of the 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 connector locking tab.
  5. Install the bolt that attaches the rear drive unit HV harness bracket to the rear drive unit inverter.
    6 Nm (4.4 lbs-ft)
  6. Install the rear drive unit inverter inlet hose in and up between the rear subframe and the HV battery.
  7. Fasten the clip that attaches the rear drive unit inverter inlet hose to rear drive unit HV harness.
  8. Remove the plugs from the fittings, immediately connect the rear drive unit inverter inlet hose to the rear drive unit inverter, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
  9. Remove the plugs from the fittings, immediately connect the rear drive unit inverter inlet hose to the HV battery, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
  10. Remove the coolant drain collector from under the vehicle.
  11. Install the HV battery rear skid plate. See 滑板 - 高压电池 - 后部（拆卸和更换）.
  12. Fasten the clips (x4) that attach the coolant hoses to the rear skid plate.
    注
    Clip quantity varies with older vehicles.
  13. Install the mid aero shield panel. See 面板 - 流线型护板 - 后部（拆卸和更换）.
  14. Connect LV power. See 12V/低压电源（断开和连接）.
  15. On the touchscreen, touch the wrench icon > Diagnostics > Thermal.
    注
    Alternatively, touch Controls (vehicle icon) > Service Mode > Diagnostics > Thermal.
  16. Hold up on the turn signal stalk, and then press and hold the brake pedal at the same time for 10 seconds to authorize.
  17. On the touchscreen, touch START to the left of “Start Coolant Air Purge” and wait for the task to complete (10 minutes).
    注
    Alternatively, touch START to the left of “Start Coolant Air Purge”, touch RUN TASK, wait for the task to complete (10 minutes), then touch X in the upper left corner.
  18. Add coolant to the reservoir as necessary, and install the reservoir cap.
  19. Install the cabin intake duct. See 槽 - 上部 - 驾驶室进气（拆卸和更换）.
  20. Install the rear underhood apron. See 前备箱挡板 - 后部（拆卸和更换）.
  21. Disable Service Mode. See 维护模式.
  22. Remove the vehicle from the 2 post lift. See 举升车辆 - 双柱举升机.