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Converter And Inverter Assembly: Removal

  1. REMOVE SERVICE PLUG (See  PRECAUTION  ) 
  2. DRAIN HV COOLANT (See  ON-VEHICLE REPAIR  ) 
  3. REMOVE COWL TOP PANEL (See  COMPONENTS  ) 
  4. VERIFY 0 V 
    NOTE:
    • Before starting step   a , 5 minutes or more should be passed after removing the service plug. 
    • Be careful to prevent foreign matter from entering the inside of connector cover. 
    1. Disconnect the connector of the battery power cable and insulate it with packaging tape.
    2. Using a torx socket wrench (T30), remove the 4 screws and inverter terminal cover.
    3. Using a torx socket wrench (T40), remove the 2 screws, circuit breaker sensor and connector cover.

      HINT:

      Slide the connector cover to disconnect the circuit breaker sensor connector.

    4. Using a voltmeter, measure the voltage between terminals of 3 phases (U-V, V-W, U-W) and each terminal and body ground to verify them to be approx. 0 V.
      Fig 1: Measuring Voltage Between Terminals
      G03430973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE CONVERTER & INVERTER ASSEMBLY 
    1. Remove the 6 bolts and 3 power cables for MG2.
      NOTE: Be careful to prevent foreign matter from entering the inside of connector cover. 
      Fig 2: Removing Power Cables For MG2
      G03430974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 3 bolts and power cable for MG1.
      NOTE:
      • Remove the power cable for MG1 together with converter & inverter assembly. 
      • Be careful to prevent foreign matter from entering the inside of connector cover. 
      Fig 3: Removing Power Cable For MG1
      G03430975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the bolt and ground cable.
    4. Disconnect the 3 water hoses from the converter & inverter assembly.
      Fig 4: Disconnecting Water Hoses From Converter & Inverter Assembly
      G03430976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the 4 bolts and converter & inverter assembly.