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:
Speaker - Pedestrian Warning (Remove and Replace)
Remove
Remove the front fascia. See
Fascia - Front (Remove and Install).
Remove the screws that attach the pedestrian warning speaker assembly to
the front fascia, and then remove the speaker from the fascia.
Torque 1.8 Nm
Install
DRAFT
Warning:
This procedure was derived from pre-production computer
models, and might not reflect the real-world situation. Warnings and cautions
might be missing. Follow safety requirements and use extreme caution when
working on or near high voltage systems and components. Do not redistri