25/06/2024 08:01:06

Vehicle HV Disablement Procedure

Correction Code 17010000

  • 2024-06-25: Added part numbers for silicone lubricant.
  • 2024-06-05: Added warning to measure the specified order of locations for high voltage.
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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.
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Warning
Remove all jewelry (watches, bracelets, rings, necklaces, earrings, ID tags, piercings, etc.) from your person, and all objects (keys, coins, pens, pencils, tools, fasteners, etc.) from your pockets before performing any procedure that exposes you to high voltage.
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Warning
If corrective eyewear is necessary to safely perform any procedure, make sure that the eyewear is securely restrained to the head and cannot fall off.
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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.
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Warning
All repair and operating instructions should be reviewed and understood before working on Tesla vehicles, associated components, or associated repair equipment.
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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.
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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.
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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.
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Warning
Make sure that the insulation meter and leads are capable of handling at least 500V DC.
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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, send feedback to ServiceManualFeedback@tesla.com.
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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.
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Warning
When using test equipment, make sure that all cables are connected before turning equipment on or otherwise initiating use.
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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.
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Warning
Only technicians who have been trained in High Voltage (HV) Awareness and have completed all required certification courses (if applicable) are permitted to perform this procedure. Proper Personal Protective Equipment (PPE) and insulating HV gloves with a minimum rating of class 0 (1000V) must be worn any time a high voltage cable is handled. Refer to Tech Note TN-15-92-003, "High Voltage Awareness Care Points" for additional safety information.
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Warning
If the 12V power supply is disconnected, do not attempt to open any doors with door glass in closed position. Failure to follow this instruction could result in door glass shatter.
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Note
Before disconnecting the 12V power supply, ensure that the driver’s door window is fully open. Failure to follow this instruction could result in vehicle lockout.

Special tool(s) required for this procedure:

Supplier Part Number Description
1076921-00-A Fluke 1587 Insulation Multimeter

Preparation

  1. Open the liftgate.
  2. If equipped, fold down the 3rd row seats.
  3. Disconnect 12V power. See Disconnect 12V Power.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Ensure that the first responder loop has been disconnected for at least 2 minutes.
  4. Set the isolation meter to measure DC high voltage, and touch the probe tips together.
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    Warning
    If the meter displays greater than 0.1 volts, the leads are defective and must be replaced.
  5. Measure the voltage across the 12V auxiliary battery terminals.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    If the voltage is less than 10 volts or greater than 14 volts, the multimeter is not measuring reliably and must not be used.

Check for HV at the Charger

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Note
After disconnecting 12V power, the rear doors and liftgate are inoperable. Open any necessary closures before proceeding.
  1. Remove the LH rear trunk side trim (refer to procedure).
  2. Remove the foam HVAC ducting.
  3. Remove and discard the warranty label from the charger access panel.
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    Note
    Components have been removed in this graphic to aid clarity.
  4. Remove and discard the screws (x11) that secure the charger access panel (torque 2 Nm).
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    CAUTION
    Replace all patchbolt(s).
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Only technicians who have been trained in High Voltage (HV) Awareness and have completed all required certification courses (if applicable) are permitted to perform this procedure. Proper Personal Protective Equipment (PPE) and insulating HV gloves with a minimum rating of class 0 (1000V) must be worn any time a high voltage cable is handled. Refer to Tech Note TN-15-92-003, "High Voltage Awareness Care Points" for additional safety information.
  5. Gently peel back the rubber cover to expose the HV fasteners.
  6. Use the charger casing as a chassis ground. Measure the following voltages:
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Ensure that the multimeter and leads are capable of handling at least 500V.
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    Warning
    Do not use a probe with an exposed tip length that is greater than 3 mm.
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    Warning
    In order to limit potential exposure to high voltage, measure for high voltage in the order specified below.
    1. B+ to ground
    2. B- to ground
    3. B+ to B-
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    Warning
    If any voltage reading is more than 10V, the High Voltage (HV) contactors are not fully opened. Due to the risk of electrocution, contact Service Engineering before performing any further work.
  7. Return to the procedure that required the HV disablement check.
  8. When repairs are complete, replace components that were removed for access.
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    Note
    Clean the adhesive residue on the charger and charger access panel with an alcohol wipe before installing a new warranty label.

Check for HV at the Drive Inverter (Large RDU Only)

  1. Raise and support the vehicle. See Raise Vehicle - 2 Post Lift.
  2. Remove the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Proper personal protective equipment (PPE) and insulating HV gloves with a minimum rating of class 0 (1000V) must be worn while performing the remainder of this procedure.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Ensure that the multimeter and leads are capable of handling at least 500V.
  3. Disconnect the low voltage harness, then release the bolt and remove the orange drive inverter cover (torque 3 Nm).
  4. Remove both O-rings from the drive inverter cover and discard.
  5. Empty all pockets and remove all metal items from your body.
  6. Inspect the HV insulating gloves for damage.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Refer to TN-15-92-003 to learn more about working with High Voltage components.
  7. Put on the HV insulating gloves, and then put on the leather over gloves.
  8. Using the drive inverter case as a chassis ground, measure the following voltages:
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    In order to limit potential exposure to high voltage, measure for high voltage in the order specified below.
    1. B+ to ground
    2. B- to ground
    3. B+ to B-
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    If any voltage reading is more than 10V, the High Voltage (HV) contactors are not fully opened. Due to the risk of electrocution, contact Service Engineering before performing any further work.
  9. Return to the procedure that required the HV disablement check.
  10. When repairs are complete, replace components that were removed for access.
    Informational PurposesAn informational icon, calling your attention
    Note
    Install new O-rings on the drive inverter cover; apply Silicone Lubricant (1010251-00-A or 1083744-01-A) to both O-rings prior to installation.
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    Note
    Install the rear-facing part of the cover first to prevent pinching the O-rings.