Vehicle HV Disablement Procedure
Correction code 17010000 0.45 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.
- 2024-06-07: Added steps to set suspension height and activate Jack Mode before step that instructs to disconnect LV.
- 2024-06-05: Added warning to measure the specified order of locations for high voltage.
- 2024-04-19: Updated the order of measuring the voltage at each terminal to ground first before measuring the voltage at both terminals.
- 2023-06-22: Updated photos to show CAT III probes being used and corrected photo for HV harness connection.
- 2023-05-02: Updated current measurement step sequence and consistency.
Only
technicians who have been trained in High Voltage 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 at all times a high voltage
cable, busbar, or fitting is handled. Refer to Tech Note TN-15-92-003, High Voltage Awareness Care Points
for additional glove and safety
information.
- 1076921-00-B, Insulation Multimeter, Fluke 1507
- 1130480-00-A, Test Probes, Slim, Fluke TP38
- 1146175-00-A, Current Clamp; Fluke 374 FC
Isolate
-
Prepare the vehicle for lifting, but
do not raise the vehicle yet. See Raise Vehicle - 2 Post Lift.
NoteSet air suspension to Very High and activate Jack Mode.
- Disconnect LV power. See LV Power (Disconnect and Connect).
-
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.
NoteBattery voltage is typically 14.5 to 15.5 volts. If the battery voltage is 0 volts, the battery may have switched off internally. Use a 12V lead acid battery for testing. Lead acid battery voltage is typically 10 to 14 volts.
- Raise the vehicle. See Raise Vehicle - 2 Post Lift.
- Remove the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
- Power on the current clamp meter, and then zero out the meter for measurement.
-
Install the current clamp meter onto
one cable of the rear drive unit HV harness.
NoteMake sure the meter is facing the correct direction as shown.
-
Measure the current in the HV
cable.
- If the current is within the range of -0.5 A to 0.5 A, 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 LV power
disconnect procedure. See LV Power (Disconnect and Connect). If the measurement is still
outside the range of -0.5 A to 0.5 A, escalate for assistance.WarningDO NOT DISCONNECT any HV harness when the current measurement is outside the range of -0.5 A to 0.5 A.
- Remove all items from pockets and make sure not to wear any metal items.
-
Inspect the HV insulating
gloves.
NoteRefer to service document TN-15-92-003, for information on inspecting HV gloves.
- Put on the HV insulating gloves and then leather over gloves.
- Slide the red connector locking tab, open the black release lever, and then disconnect the rear drive unit HV harness from the HV battery LH HV header.
-
Use the high voltage multimeter with
CAT III probes to verify that no high voltage is present at the HV battery LH HV
header.
Measure the following voltages:WarningIn order to limit potential exposure to high voltage, measure for high voltage in the order specified below.
- B+ to ground
- B- to ground
- B+ to B-
WarningIf any voltage is greater than 10V, the contactors are closed or welded. Escalate to Service Engineering. - If the procedure that required vehicle HV disablement does not need the rear drive unit HV harness disconnected from the HV battery, 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 LH HV header, secure the release lever to the closed position, and then slide the red connector locking tab.
- Return to the procedure that required vehicle HV disablement.
Integrate
- If removed, put on the HV insulating gloves and leather over gloves.
- 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 LH HV header, secure the release lever to the closed position, and then slide the red connector locking tab.
- Remove the leather glove protectors and the HV insulating gloves.
- Install the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
- Lower the vehicle. See Raise Vehicle - 2 Post Lift.
- Connect LV power. See LV Power (Disconnect and Connect).
- Remove the vehicle from the lift.