Tesla Model 3: Shunt - HV Battery (Remove and Replace)
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 (1057606-00-A)
Resistance meter, microohm, Hioki RM 3548 (1076927-00-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. See Pyrotechnic Battery Disconnect (Remove and Replace).
- Disconnect the electrical harness from the shunt connector
- Remove and discard the bolt that attaches the shunt to the busbar.
- Remove the shunt from the vehicle.
Install
- Use an IPA wipe to clean the HV mating surfaces of the shunt, busbar, and the pryotechnic battery disconnect.
- Install the shunt to the busbar, install a new bolt to attach the shunt
to the busbar, and then mark the bolt with a paint pen after it is torqued.
Torque 9 Nm
.jpg)
Generic Measurement - Actual busbars and fasteners might appear
different
- Use the Hioki resistance meter to measure the resistance between the shunt and the adjacent busbar.
Note: The maximum acceptable resistance is 0.045 mΩ (45 μΩ). If the resistance is above this value, escalate a Toolbox session, as appropriate.
- Connect the electrical harness to the shunt connector
- Install the pyrotechnic battery disconnect. See Pyrotechnic Battery Disconnect (Remove and Replace).
READ NEXT:
SEE MORE:
Flood Ports - 2nd Generation (Remove and Replace) - Install
Install
Use an IPA wipe to clean the area around the openings where the flood
ports were removed.
Install a 2nd generation flood port into the opening at the LH underside
of the HV battery penthouse.
Note: Press up firmly to fully seat the flood port and fasten the
clips (x8) internally
Debris or Moisture in the A/C System
Internally or externally damaged components can cause debris and moisture to
enter the A/C system. Perform the following procedures if debris or excessive
moisture ingress is suspected.
Caution: Do not attempt to use an A/C refrigerant flushing kit.
A/C Components Damaged in a Collision, No Refr
