Tesla Model S Owners & Service Manuals

Tesla Model S: HV Junction Box - Cover - 1st Generation (Remove and Replace)

Tesla Model S (2012-2024) Service Manual / High Voltage System / HV Junction Box - Cover - 1st Generation (Remove and Replace)

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

  1. Disconnect 12V and HV power:
    • Rear wheel drive (RWD): Refer to procedure.
    • Dual Motor: Refer to procedure.
  2. Remove the 2nd row cushion frame (refer to procedure).
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.

  1. Remove the bolts (x6) that secure the HV junction box cover (torque 5 Nm). Remove the cover.

    HV Junction Box - Cover - 1st Generation (Remove and Replace)

  2. Use a multimeter to check voltages across the HV cables and to ground:
    • B+ to ground
    • B- to ground
    • B+ to B- 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.

      HV Junction Box - Cover - 1st Generation (Remove and Replace)

      1 B+
      2 Ground
      3 B-

Installation

Installation procedure is the reverse of removal.

    READ NEXT:

     HV Junction Box - 2nd Generation (Remove and Replace)

    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

     HV Junction Box - Cover - 2nd Generation (Remove and Replace)

     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

    SEE MORE:

     Module - Sunroof Controller (Remove and Replace)

    Removal Remove the body control module (BCM) (refer to procedure) Remove the 4 bolts and 1 nut that secure the sunroof controller mounting bracket to the body (torque 8 Nm). Carefully turn the mounting bracket over.

     Door - Charge Port - Non-Motorized (Remove and Replace)

    Removal Remove the LH tail light assembly (refer to procedure). Remove the screws (x3) that secure the charge port door to the tail light assembly. Remove the charge port door. Installation

    © 2019-2024 Copyright www.tesms.org