2026-11-02

Vehicle HV Disablement Procedure

校正代码 See the codes below. 注意：除非本程序中另有明确规定，否则上文所列校正代码及相关 FRT 反映的是执行本程序（包括关联程序）所需的所有工作。除非明确要求，否则请勿堆叠校正代码。 注意：请参阅平均维修工时深入了解 FRT 及其创建方式。 注意：请参阅人员保护确保在执行以下程序时穿戴适当的个人防护装备 (PPE)。 注意：请参阅人体工程学注意事项查看安全健康的作业规程。

  • 2026-11-02: Updated this procedure to include both HV disablement methods from the RDU and the ancillary bay.
  • 2026-09-18: Updated the procedure to use the amp clamp and voltage measurement method at the rear drive unit cables from underneath the vehicle.
  • 2025-12-04: Added note not to remove HV leather gloves if procedure that requires isolation involves handling HV components.
  • 2025-10-22: Updated measurement table.
  • 2025-03-24: Added warning for regional tooling regulations.
  • 2025-01-30: Clarified B+ and B- probe step.
  • 2024-06-05: Added warning to measure the specified order of locations for high voltage.

For HV disablement from the rear drive unit: 校正代码17010000; FRT0.48

For HV disablement from the ancillary bay area: 校正代码17010010; FRT0.30

Warning
This procedure verifies that high voltage power is no longer available to high voltage components (PTC heater, A/C compressor, inverters, etc). Perform this procedure before servicing high voltage components.
Warning
执行暴露在高压之下的任何程序之前，请取下佩戴的所有首饰（手表、手链、戒指、项链、耳环、身份牌、穿刺饰品等），并取出口袋中的所有物品（钥匙、硬币、钢笔、铅笔、工具、钮扣等）。
Warning
如果需要为了安全地执行程序而佩戴矫正护目镜，请确保护目镜牢固地固定到头上并且不会掉落。
Warning
Always wear High Voltage (HV) gloves and safety glasses when handling any high voltage component, including test equipment. Before each use, test gloves using an authorized glove tester and verify that the testing date on the gloves has not expired.
Warning
All repair and operating instructions should be reviewed and understood before working on Tesla vehicles, associated components, or associated repair equipment.
Warning
Assume that high voltage is present at all times when working on a Tesla vehicle, associated high voltage components, or associated high voltage test equipment until proven otherwise. Be aware that energy states can change during testing, so err on the side of caution.
Warning
Always have an electrical safety hook in the area when working with HV components. Electrical safety hooks are used to remove an injured person from a live high voltage circuit without risking additional injury.
Warning
Use a high voltage digital multimeter to check for the presence of high voltage on both sides of the connector every time a high voltage connector is disconnected.
Warning
在特定地区，执行本程序时需要使用无电压测试仪 (VAT)，不得使用万用表。请始终遵守当地的或地区性工具法规。
Warning
Make sure that the multimeter and leads are capable of handling at least 500V DC.
Warning
Obey all instructions when using test equipment or servicing a Tesla vehicle or associated high voltage components. If repair instructions are not clear or if there are any questions about how to use the test equipment, escalate a Toolbox session before proceeding.
Warning
If any test equipment fails to operate as expected, do not attempt to diagnose or repair the vehicle. Follow the appropriate lock out – tag out procedure for the equipment, notify your manager.
Warning
When using test equipment, make sure that all cables are connected before turning equipment on or otherwise initiating use.
Warning
High voltage is present on battery recovery chargers whenever the HV LEDs are lit. However, indicators and LEDs can fail. Do not assume that if an LED is not lit no high voltage is present. Assume high voltage is present at all times until proven otherwise by use of a multimeter.
Warning

只有完成全部所需认证的技术人员才能执行此程序。Tesla 特斯拉建议第三方服务提供商技术人员在执行此程序之前接受同等培训。有关 Tesla 技术人员要求的更多信息，或第三方主题说明，请参阅高压认证要求。处理高压线缆、母排或接头时，务必全程穿戴最低防护等级为 0(1000V) 的适当个人防护装备 (PPE)及高压绝缘手套。有关其他安全信息，请参阅技术注意事项 TN-15-92-003，高压安全意识注意事项。

Equipment:
  • 1076921-00-A FLUKE DIGITAL MULTIMETER 1587
  • 1059330-00-B Skt, 1/4in Dr, 5-Lobe Torx Plus External
  • 1130480-02-B Slim Test Probes

From Rear Drive Unit (RDU)

  1. Open all four doors and lower all four windows.
  2. Disconnect LV power. See 低压电源（断开和连接） (Modify).
  3. Set the multimeter to DC voltage and confirm it is properly measuring voltage by measuring the voltage across the LV auxiliary battery terminals.
    CAUTION
    If the voltage across the battery terminals is less than 13 volts or greater than 16 volts, the multimeter is not measuring reliably and must not be used.
  4. Remove the rear aero shield. See 流线型护板 - 后底板 ((拆卸和更换)).
  5. Remove the rear skid plate from the HV battery. See 防滑板 - 后 - 高压电池 ((拆卸和更换)).
  6. Install the current clamp meter onto one cable of the rear drive unit HV harness.
    Note
    Make sure the meter is facing the correct direction as shown.
  7. Measure the current at the rear drive unit HV harness.
    • If the current is within the range of -0.5 A to 0.5 A, remove the clamp from the harness and continue to the next step.
    • If the current is outside the range of -0.5 A to 0.5 A, for example -0.8 A or 1.3 A, re-perform the vehicle electrical isolation again to make sure that all was properly shut down. If the measurement is still outside the range of -0.5 A to 0.5 A, escalate for assistance.
    Warning
    DO NOT DISCONNECT any HV harness when the current measurement is outside the range of -0.5 A to 0.5 A.
  8. Remove the nut that attaches the rear drive unit HV cable bracket to the HV battery.
    Note
    The number of the fasteners may vary.
    Tip
    推荐使用以下工具
    • 10 毫米套筒扳手
  9. Remove all jewelry and empty your pockets before continuing this procedure.
  10. Inspect and put on HV insulating gloves, leather outer gloves, and safety glasses before continuing this procedure.
  11. Release the locking tab and rotate the release lever up to disengage the connector that attaches the rear drive unit HV cable to the HV battery.
    Note
    Do not force the release lever up. Ensure the alignment tabs on the rear drive unit header are not damaged
  12. Use the high voltage multimeter with CAT III probes to verify that no high voltage is present at the rear drive unit HV header.
    Warning
    为减少可能接触高压的风险，请按照如下顺序测量高压：
    Measure the following voltages:
    1. B+ to ground
    2. B- to ground
    3. B+ to B-
    Warning
    If any voltage is greater than 10V, the contactors are closed or welded. Escalate to Service Engineering.
  13. Make sure the connector lock is 90 degrees from the connector, and then connect the connector that attaches the rear drive unit HV cable to the HV battery.
    Note
    Use one hand to support the connector while the other latching the locking tab. Once installed, verify that the latch is not damaged and is fully secured in the latched position.
  14. Remove the leather over gloves and the HV insulating gloves.
  15. Install the nut that attaches the rear drive unit HV cable bracket to the HV battery.
    10 Nm (7.4 lbs-ft)
    Note
    The number of the fasteners may vary.
    Tip
    推荐使用以下工具
    • 10 毫米套筒扳手
  16. Install the rear skid plate from the HV battery. See 防滑板 - 后 - 高压电池 ((拆卸和更换)).
  17. Install the rear aero shield. See 流线型护板 - 后底板 ((拆卸和更换)).
  18. Connect the LV power. See 低压电源（断开和连接） (Modify).
    Warning
    DO NOT perform this step if the electrical isolation was required by another procedure. Return to that procedure after the vehicle is electrically isolated.
  19. Raise all four windows and close all four doors.

From Ancillary Bay

  1. Open all doors and lower all windows.
  2. Move both front seats forward.
  3. Remove the 2nd row lower seat cushion. See 坐垫 - 第二排座椅 ((拆卸和更换)).
  4. Disconnect LV power. See 低压电源（断开和连接） (Modify).
  5. Set the multimeter to measure voltage, and then measure the voltage across the LV auxiliary battery terminals.
    CAUTION
    If the voltage across the battery terminals is less than 13 volts or greater than 16 volts, the multimeter is not measuring reliably and must not be used.
  6. Remove all jewelry and empty your pockets before continuing this procedure.
  7. Put on HV insulating gloves, leather outer gloves, and safety glasses before continuing this procedure.
  8. Remove the HV probe cover. See 检修盖总成 - 高压电池仓 ((拆卸和更换)).
  9. Use a multimeter to probe the voltages.
    Warning
    为减少可能接触高压的风险，请按照如下顺序测量高压：
    Measurement Order

    Component Test

    B+

    (Probe opening closer to HV DC connector)

    B-

    (Probe opening, closer to HV Processor Logic connector)

    GND

    Measured Voltage less than 10 V

    Measured Voltage 10 V or more
    1

    HV battery positive contactor

    Positive (+) Lead

    Negative (-) Lead on ancillary bay cover

    Pass

    Fail

    HV battery positive contactor might be seized. See高压电池接触器卡住检查 (Test/Adjust).
    2

    HV battery negative contactor

    Positive (+) Lead

    Negative (-) Lead on ancillary bay cover

    Pass

    Fail

    HV battery negative contactor might be seized. See高压电池接触器卡住检查 (Test/Adjust).
    3

    HV

    Positive (+) Lead

    Negative (-) Lead

    Pass

    Fail

    Perform a HV battery contactor seize check. See高压电池接触器卡住检查 (Test/Adjust).
    Tip
    推荐使用以下工具
    • Electrical Protective Gloves
    • Slim Test Probes - 1130480-02-B
    • Fluke 1587 - 1076921-00-A
    Figure 1. B+ to Ground measurement
    Figure 2. B- to Ground measurement
    Figure 3. B+ to B- measurement
  10. Install the HV probe lid. See 检修盖总成 - 高压电池仓 ((拆卸和更换)).
  11. Return to the procedure that required the HV disablement check.
    Warning
    执行需要对车辆进行电气隔离的程序时，请遵守所有安全指示以及有关个人防护装备 (PPE) 的要求。执行需要处理高压线缆、母排或接头的程序时，请勿脱下高压绝缘手套。
    Note
    If you are no longer exposed to high voltage, the HV insulating gloves may be removed.