Tesla Model S: HV Junction Box - Cover - 2nd Generation (Remove and Replace) - Removal
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 00 (500V) 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.
Removal
- Disconnect 12V and HV power:
- Rear wheel drive (RWD): Refer to procedure.
- Dual Motor: Refer to procedure.
- Remove the 2nd row seat frame:
- Standard seats: Refer to procedure.
- Executive seats: Refer to procedure.
- Remove the HVIL bolt from the HVJB cover. Do not remove the
remaining fasteners at this time.
- North America, Japan (torque 4 Nm)
Note: In North American and Japanese vehicles, the
HVIL bolt is one-time use only. Install a new bolt during
reinstallation.
- Europe, APAC (torque 5 Nm)
Note: In European and APAC vehicles, the HVIL bolt
can be reused during reinstallation.
Warning: Proper personal protective equipment (PPE) and
insulating HV gloves with a minimum rating of class 00 (500V) must
be worn while performing the remainder of this procedure.
Warning: Ensure that the multimeter and leads are capable
of handling at least 500V.
- Remove the remaining fasteners that secure the HVJB cover.
- North America, Japan (torque 8 Nm)
Note: In North American and Japanese
vehicles, there are 5 additional fasteners.
- Europe, APAC (torque 8 Nm)
Note: In European and APAC vehicles, there are 6
additional fasteners.
- Use a multimeter to check voltages across the HV cables and to
ground:
Warning: If any voltage reading is more than 10V,
the high voltage contactors are not fully opened. Due to the
risk of electrocution, contact Service Engineering before
performing any further work.
Warning: Never use a fastener or an e-coated
surface as a path to ground. In this procedure, ensure that
the ground strap from the HVJB is secure to the body and use
the lug as a path to ground.
- The 4 HV cables to the HV battery and rear drive unit
- The 2 HV cables to the forward junction box
- The 2 HV cables to the charge port
- Dual Motor vehicles only: The 2 HV
cables to the front drive unit
1 |
B+ Front Drive
Unit (if equipped) |
2 |
B- Front Drive
Unit (if equipped) |
3 |
B+ battery/drive
inverter |
4 |
B- battery/drive
inverter |
5 |
B+ DCDC converter |
6 |
B- DCDC converter |
7 |
B- charge port |
8 |
B+ charge port |
Note: Vehicles with 3-phase charging have 4
harnesses to the charge port:
1 |
B+ N charge port |
2 |
B- L1 charge port |
3 |
B+ L3 charge port |
4 |
B- L2 charge port |
READ NEXT:
Insert the HVIL bolt into the shield collar clamp by 2 threads.
1
Install HVIL bolt 2
threads
Installation
Position the HVJB cover.
Install the HVIL bolt loosely. Do not tighten it fully at this
time.
North America, Japan
Note: In North American a
Note: This procedure only applies to vehicles with the
1st generation High Voltage Junction Box.
Special tools required for this procedure:
Supplier
SEE MORE:
Warning: If the
vehicle has air suspension, activate "Jack" mode on the
touchscreen before raising and supporting the vehicle.
Special tool required for this procedure:
Supplier
Part Number
Model S has the following types of airbags:
Front airbags: The front airbags are designed to
reduce injuries if larger children or adults are riding in
the front seats. Follow all warnings and instructions
related to seating a child on the front passenger seat
(if permitted in your m