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Home >> Lexus >> 2007 >> RX 400h AWD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control (P310) - RX400H - Inverter With Converter, Vehicle Control Ecu, Water Pump With Motor, Sub Radiator, Frame Wire, Accelerator Pedal Rod, Front/Rear Circuit Breaker Sensors, IGCT Relay >> Inverter With Converter >> Removal

Inverter With Converter: Removal

  1. PRECAUTION 

    (See REPAIR INSTRUCTION )

  2. REMOVE ENGINE ROOM SIDE LH COVER NO.2  (See REMOVAL )
  3. REMOVE ENGINE ROOM COVER SIDE  (See REMOVAL )
  4. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
  5. REMOVE SERVICE PLUG GRIP  (See REMOVAL )
  6. DRAIN COOLANT (for Inverter)  (See COOLANT (for Inverter) )
  7. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY RH  (See REMOVAL )
  8. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY LH  (See REMOVAL )
  9. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY  (See REMOVAL )
  10. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY  (See REMOVAL )
  11. REMOVE COWL TOP PANEL SUB-ASSEMBLY OUTER  (See REMOVAL )
  12. REMOVE COOL AIR INTAKE DUCT SEAL  (See REMOVAL )
  13. REMOVE AIR CLEANER CAP W/INLET  (See REMOVAL )
  14. REMOVE AIR CLEANER W/RESONATOR  (See REMOVAL )
  15. REMOVE INVERTER BRACKET NO.5  (See REMOVAL )
  16. REMOVE POWER STEERING ECU ASSEMBLY  (See REMOVAL )
  17. DISCONNECT CIRCUIT BREAKER SENSOR NO.1 
    1. Move the outer section to the wire harness side as illustrated, then disconnect the circuit breaker sensor No. 1.
    Fig 1: Identifying Circuit Breaker Sensor No 1
    G05201734Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. DISCONNECT ENGINE ROOM WIRE NO.2 
    1. Remove the nut from the engine room wire No.2.
    2. Release the claw, and disconnect the engine room wire No.2.
    Fig 2: Disconnecting Engine Room Wire No.2
    G05201771Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. REMOVE INVERTER RESERVE TANK SUB-ASSEMBLY 
    1. Remove the 2 bolts and inverter reserve tank sub-assembly.
      Fig 3: Locating Inverter Reserve Tank Bolts
      G05201736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Slide the 2 clamps, and disconnect the 2 water hoses from the inverter reserve tank sub-assembly.
    Fig 4: Locating Water Hoses
    G05201737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. DISCONNECT WATER HOSE 
    1. Slide the clamp, and disconnect the water hose from the w/ converter inverter assembly.
    Fig 5: Locating Water Hose
    G05201738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. DISCONNECT POWER STEERING ECU BRACKET 
    1. Remove the bolt, and disconnect the power steering ECU bracket.
    Fig 6: Locating Power Steering ECU Bracket Bolt
    G05201739Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. REMOVE INVERTER COVER 
    1. Remove the bolt and interlock bracket.
      Fig 7: Locating Interlock Bracket Bolt
      G05201740Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Insulate the removed terminal with insulating tape.
      NOTE: Make sure that the terminal does not stick out from the insulating tape.
      Fig 8: Insulating Removed Terminal With Insulating Tape
      G05278867Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 12 bolts and inverter cover.
      4. Fig 9: Locating Inverter Cover Bolts
      G05201742Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. VERIFY THAT VOLTAGE OF W/CONVERTER INVERTER ASSEMBLY IS 0V 
    CAUTION: Wear insulating gloves.
    NOTE:
    • Make sure that the inverter converter is temporarily installed before working on the converter inverter assembly. (See HYBRID CONTROL SYSTEM )
    • Do not allow any foreign objects or waterdrops to enter the w/ converter inverter assembly.
    1. Using the voltmeter, measure the voltage between the terminals of the 2 phase connectors (N-P).

    Standard voltage: 

    O V 

    HINT:

    Use measuring range of DC 750 V or more on the voltmeter.

    Fig 10: Measuring Voltage Between Terminals Of 2 Phase Connectors (N-P)
    G05201743Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  24. SEPARATE ENGINE WIRE NO.4 
    CAUTION: Wear insulating gloves.
    NOTE:
    • Make sure that the inverter converter is temporarily installed before working on the converter inverter assembly. (See HYBRID CONTROL SYSTEM )
    • Do not allow any foreign objects or waterdrops to enter the w/ converter inverter assembly.
    1. Remove the bolt, and disconnect the engine wire No.4 from the w/ converter inverter assembly.
      2. Fig 11: Locating Engine Wire No 4
      G05201744Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the connector, clamps and grommet, and separate the engine wire No.4 from the w/ converter inverter assembly.
  25. DISCONNECT HIGH VOLTAGE CABLE OF FRONT MOTOR 
    CAUTION: Wear insulating gloves.
    NOTE:
    • Make sure that the inverter converter is temporarily installed before working on the converter inverter assembly. (See HYBRID CONTROL SYSTEM )
    • Insulate the removed terminals with insulating tape.
    • Do not allow any foreign objects or waterdrops to enter the w/ converter inverter assembly.
    1. Remove the 5 bolts, and disconnect the high voltage cables of the Motor from the w/ converter inverter assembly.
      Fig 12: Locating High Voltage Cable Bolts
      G05201745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 5 bolts, and disconnect the high voltage cables of the Generator from the w/ converter inverter assembly.
      3. Fig 13: Locating High Voltage Cable Bolts
      G05201746Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  26. DISCONNECT MG ECU CONNECTOR 
    CAUTION: Wear insulating gloves.
    NOTE:
    • Make sure that the inverter converter is temporarily installed before working on the converter inverter assembly. (See HYBRID CONTROL SYSTEM )
    • Do not allow any foreign objects or waterdrops to enter the w/ converter inverter assembly.
    1. Disconnect the 2 connectors and grommets from the w/ converter inverter assembly.
      2. Fig 14: Locating Connectors And Grommets
      G05201760Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  27. DISCONNECT NO.3 WIRE FRAME 
    CAUTION: Wear insulating gloves.
    NOTE:
    • Make sure that the inverter converter is temporarily installed before working on the converter inverter assembly. (See HYBRID CONTROL SYSTEM )
    • Insulate the removed terminals with insulating tape.
    • Do not allow any foreign objects or waterdrops to enter the w/ converter inverter assembly.
    1. Remove the 5 bolts, and disconnect the No.3 wire frame (high voltage cables of the rear motor) from the w/ converter inverter assembly, (for 4WD)
      Fig 15: Locating No. 3 Wire Frame Bolts
      G05201748Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt and lift the lever to disconnect the No.3 wire frame from the w/ converter inverter assembly.
    Fig 16: Disconnecting No 3 Wire Frame From W/ Converter Inverter Assembly
    G05201749Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  28. INSTALL INVERTER COVER 
    1. Temporarily install the inverter cover with the 2 bolts to prevent any foreign objects or waterdrops from entering the w/ converter inverter assembly.
    Fig 17: Identifying Inverter Cover Bolts
    G05278876Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  29. SEPARATE ENGINE ROOM RELAY BLOCK ASSEMBLY 
    1. Disconnect the clamp, and release the engine room relay block assembly.
    Fig 18: Identifying Engine Room Relay Block Assembly Clamp
    G05201756Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  30. REMOVE INVERTER BRACKET NO.4 
    1. Remove the 2 bolts and inverter bracket No.4.
      2. Fig 19: Locating Inverter Bracket No. 4 Bolts
      G05201752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. REMOVE W/CONVERTER INVERTER ASSEMBLY 
    CAUTION: Wear insulating gloves.
    1. Remove the 2 nuts, bolt and w/ converter inverter assembly.
      NOTE:
      • 2 people are needed to remove the w/ converter inverter assembly.
      • If removing and storing the w/ converter inverter assembly, make sure to install the inverter cover to prevent any foreign objects or warterdrops from entering the w/ converter inverter assembly.
      • Attach tape or equivalent (any adhesive should not be remained) to the holes for the connectors and grommets to prevent foreign matter or water from entering.
      Fig 20: Locating W/ Converter Inverter Assembly Nuts And Bolt
      G05201753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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