Tesla Model 3: Fuse - Power Conversion System - HV Battery (Remove and Replace)
Fuse - Power Conversion System - HV Battery-
Remove

SPECIAL TOOLS
Ratchet, 1/4" Sq Dr, HV Insulated (1057602-00-A)
Ext Bar, Wobble, 1/4" Dr, HV Insulated (1057603-00-A)
Skt, 1/4" Sq Dr, 8mm, HV Insulated (1057604-00-A)
Magnet, Flexible, HV Insulated, 18" (1057607-00-A)
Asy, Service Cover, Penthouse, Model 3 (1127845-00-A)
Warning:
Only technicians who have been trained in High Voltage Awareness 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 safety
information.
Remove
- Remove the pyrotechnic battery disconnect from the penthouse. See
Pyrotechnic Battery Disconnect (Remove and Replace).

- Raise the high voltage controller, release the clips that attach the
fuse access insulator to the RH penthouse bus cover, and remove the
insulator.

- Remove and discard the nuts that attach the power conversion system fuse
to the RH penthouse bus and remove the fuse.

Fuse - Power Conversion System - HV Battery-
Install
Install

- Install the power conversion system fuse to the RH penthouse bus, and
then install new nuts to attach the fuse to the bus.
Torque 2.5 Nm
Generic Measurement - Actual busbars and fasteners might appear
different
- Use the Hioki resistance meter to measure the resistance at the HV joint
between the penthouse bus and the LH side of the power conversion system
fuse body .
Note: The maximum acceptable resistance is 0.105 mΩ (105 μΩ). If
the resistance is above this value, escalate a Toolbox session, as appropriate.
Generic Measurement - Actual busbars and fasteners might appear
different
- Use the Hioki resistance meter to measure the resistance at the HV joint
between the RH side of the power conversion system fuse and the respective
ring terminal plating.
Note: The maximum acceptable resistance is 0.145 mΩ (145 μΩ). If
the resistance is above this value, escalate a Toolbox session, as appropriate.

- Install the fuse access insulator on the RH penthouse bus cover, fasten
the clips that attach the insulator to the cover, and lower the high voltage
controller.
- Install the pyrotechnic battery disconnect into the penthouse. See
Pyrotechnic Battery Disconnect (Remove and Replace).
READ NEXT:
Guide - Probing - HV Battery- Remove
SPECIAL TOOLS
Ratchet, 1/4" Sq Dr, HV Insulated (1057602-00-A)
Ext Bar, Wobble, 1/4" Dr, HV Insulated (1057603-00-A)
Skt, 1/4" Sq Dr, 13mm, HV Insulated (1057606
SEE MORE:
Remove
Remove the LH instrument panel end cap. See
End Cap - Instrument Panel - LH (Remove and Replace).
Remove the LH and RH air wave end caps. See
End Cap - Air Wave - LH (Remove and Replace).
Remove the main instrument panel decor trim. See
Decor Trim - Instrument Panel - Main (Remove a
Remove
Remove the front subframe assembly from the vehicle. See Subframe
Assembly - Front (Dual Motor) (Remove and Install).
Remove and discard the bolts that attach the LH front motor mount
isolator to the body, and then remove the isolator from the vehicle.
Warning: Secure the LH fro