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

FRT No: 44300202

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:
  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.
  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.
      1 B+
      2 Ground
      3 B-

Installation

Installation procedure is the reverse of removal.