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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (Hybrid Battery Control System - Service Information (1 Of 3)) >> Inverter With Converter >> Removal [06/2018 - 08/2020] >> Procedure

Removal [06/2018 - 08/2020]: Procedure

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  1. PRECAUTION 

    Refer to PRECAUTION [06/2018 - ]

  2. REMOVE SERVICE PLUG GRIP 

    Refer to REMOVAL [06/2018 - 08/2020]

  3. DRAIN COOLANT (for Inverter) 

    Refer to PROCEDURE - Step 1

  4. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 18

  5. REMOVE COOL AIR INTAKE DUCT SEAL 

    Refer to PROCEDURE - Step 1

  6. REMOVE INLET AIR CLEANER ASSEMBLY 
    1. Remove the 2 bolts and inlet air cleaner assembly.
      GTY828596Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE AIR CLEANER ASSEMBLY WITH AIR CLEANER HOSE 
    1. Disconnect the mass air flow meter sub-assembly connector.
      GTY786971Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the wire harness clamp.
    3. Slide the clip and disconnect the No. 2 ventilation hose from the cylinder head cover sub-assembly.
      GTY801825Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Grommet
      *b Pin
    4. Loosen the hose clamp and disconnect the air cleaner assembly with air cleaner hose from the throttle body with motor assembly.
    5. Disengage the 2 grommets and pin to remove the air cleaner assembly with air cleaner hose.
  8. REMOVE ECM 

    Refer to REMOVAL [06/2018 - 08/2020]

  9. DISCONNECT ENGINE ROOM MAIN WIRE 
    WARNING:

    Be sure to wear insulated gloves.

    NOTE:

    Do not allow any foreign matter or water to enter the inverter with converter assembly.

    1. Move the lock lever while pushing the lock on the connector, and disconnect the inverter with converter assembly connector.
      NOTE:
      • Do not damage the terminals, connector housing or inverter with converter assembly during disconnection.
      • Cover the hole where the cable was connected with tape (non-residue type) or equivalent to prevent entry of foreign matter.
      • Insulate the disconnected terminals with insulating tape.
      • Do not touch the waterproof seal or terminals of the connector.
      GTY760955Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt.
      GTY762943Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disengage the clamp and disconnect the engine room main wire.
  10. REMOVE CONNECTOR COVER ASSEMBLY 
    WARNING:

    Be sure to wear insulated gloves.

    1. Remove the bolt (B).
      GTY744252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Bolt (A)
      *b Bolt (B)
    2. Using a T25 "TORX" socket wrench, remove the bolt (A) and connector cover assembly from the inverter with converter assembly.
      NOTE:
      • Do not touch the connector cover assembly waterproof seal.
      • Do not allow any foreign matter or water to enter the inverter with converter assembly.
  11. CHECK TERMINAL VOLTAGE 
    WARNING:

    Be sure to wear insulated gloves.

    1. Using a voltmeter, measure the voltage between the terminals of the 2 phase connectors.

      Standard Voltage

      0 V

      NOTE:

      Do not allow any foreign matter or water to enter the inverter with converter assembly.

      HINT: 

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

      GTY762947Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. TEMPORARILY INSTALL CONNECTOR COVER ASSEMBLY 
    WARNING:

    Be sure to wear insulated gloves.

    1. Temporarily install the connector cover assembly to the inverter with converter assembly.
      GTY773470Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a T25 "TORX" socket wrench, install the bolt.

      Torque: 4.5 N.m (46 kgf/cm, 40 in.lbf) 

      NOTE:
      • Do not touch the connector cover assembly waterproof seal.
      • Do not allow any foreign matter or water to enter the inverter with converter assembly.
  13. DISCONNECT HV FLOOR UNDER WIRE 
    WARNING:

    Be sure to wear insulated gloves.

    1. Remove the bolt.
      GTY744953Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Waterproof Seal
    2. Disengage the 2 clamps and disconnect the HV floor under wire from the inverter with converter assembly.
      NOTE:
      • Do not touch the waterproof seal or terminals of the connector.
      • Do not damage the terminals, connector housing or inverter with converter assembly during disconnection.
      • Cover the hole where the cable was connected with tape (non-residue type) or equivalent to prevent entry of foreign matter.
      • Do not allow any foreign matter or water to enter the inverter with converter assembly.
      • Insulate the disconnected terminals with insulating tape.
  14. DISCONNECT HV AIR CONDITIONING WIRE 
    WARNING:

    Be sure to wear insulated gloves.

    1. Remove the 2 bolts.
      GTY746456Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Waterproof Seal
    2. Disengage the clamp and disconnect the HV air conditioning wire from the inverter with converter assembly.
      NOTE:
      • Do not allow any foreign matter or water to enter the inverter with converter assembly.
      • Do not touch the waterproof seal or terminals of the connector.
      • Do not damage the terminals, connector housing or inverter with converter assembly during disconnection.
      • Insulate the disconnected terminals with insulating tape.
      • Cover the hole where the cable was connected with tape (non-residue type) or equivalent to prevent entry of foreign matter.
  15. REMOVE WIRE HARNESS CLAMP BRACKET 
    1. Remove the nut and wire harness clamp bracket.
      GTY762945Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. DISCONNECT ENGINE WIRE 
    WARNING:

    Be sure to wear insulated gloves.

    NOTE:

    Do not allow any foreign matter or water to enter the inverter with converter assembly.

    1. Move the lock lever while pushing the lock on the connector, and disconnect the inverter with converter assembly connector.
      NOTE:
      • Do not damage the terminals, connector housing or inverter with converter assembly during disconnection.
      • Cover the hole where the cable was connected with tape (non-residue type) or equivalent to prevent entry of foreign matter.
      • Insulate the disconnected terminals with insulating tape.
      • Do not touch the waterproof seal or terminals of the connector.
      GTY773469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the 3 clamps (A) and disconnect the No. 1 fuel vapor feed hose.
      GTY754690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the bolt.
    4. Disengage the 2 clamps (B).
    5. Disengage the 2 clamps (A) and disconnect the No. 1 fuel vapor feed hose and No. 2 fuel vapor feed hose.
      GTY821538Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Remove the bolt.
    7. Disengage the clamp (B).
    8. Disconnect the generator temperature sensor connector, resolver (transmission fluid temperature sensor) connector and shift lever position sensor connector and disengage the clamp.
      GTY817066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Generator Temperature Sensor Connector
      *b Resolver (Transmission Fluid Temperature Sensor) Connector
      *c Shift Lever Position Sensor Connector
      NOTE:

      After disconnecting the engine wire, cover the connector of the generator temperature sensor, resolver (transmission fluid temperature sensor) and shift lever position sensor with tape (non-residue type) or equivalent to prevent the entry of foreign matter or water.

      GTY958443Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. Disengage the 2 clamps.
      GTY781151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. Remove the bolt.
      GTY787049Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    11. Remove the bolt.
      GTY829890Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    12. Disengage the 2 claws and open the engine wire terminal cover.
      GTY787040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    13. Remove the nut.
      GTY775260Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    14. Disengage the 2 clamps and disconnect the engine wire from the inverter with converter assembly.
  17. DISCONNECT TRANSMISSION CONTROL CABLE ASSEMBLY 
    1. Remove the nut and disconnect the transmission control cable assembly from the control shaft lever.
      GTY745666Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a screwdriver, disengage the 4 claws and disconnect the transmission control cable assembly with the clip from the No. 1 transmission control cable bracket.
      GTY745665Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a screwdriver, disengage the 2 claws and remove the clip from the transmission control cable assembly.
      GTY745662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 3 bolts and disconnect the transmission control cable assembly from the inverter with converter assembly.
      GTY787000Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. DISCONNECT NO. 1 INVERTER COOLING HOSE 
    1. Slide the clip and disconnect the No. 1 inverter cooling hose from the inverter with converter assembly.
      NOTE:

      Put pieces of cloth into the pipe and disconnected hose or cover the pipe and hose with plastic bags to prevent entry of foreign matter.

      GTY787001Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. DISCONNECT NO. 4 INVERTER COOLING HOSE 
    1. Slide the clip and disconnect the No. 4 inverter cooling hose from the inverter with converter assembly.
      NOTE:

      Put pieces of cloth into the pipe and disconnected hose or cover the pipe and hose with plastic bags to prevent entry of foreign matter.

      GTY775261Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. REMOVE INVERTER COVER 
    WARNING:

    Be sure to wear insulated gloves.

    1. Remove the 2 bolts and inverter cover from the inverter with converter assembly.
      NOTE:
      • Make sure to pull the inverter cover straight out, as a connector is connected to the inside of the inverter cover.
      • Do not touch the waterproof seal of the inverter cover.
      • Do not allow any foreign matter or water to enter the inverter with converter assembly.
      • When removing the inverter cover, do not pull the areas (A) as they may deform.
      • Make sure that the interlock is installed to the inverter cover.
      • Do not remove or excessively tighten the screw of the inverter cover.
        GTY596587Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Inverter Cover
        *a Screw
      • Although the inverter cover may feel loose, this is not due to a malfunction.

      HINT: 

      If necessary, use a screwdriver with its tip wrapped with protective tape as shown in the illustration to remove the inverter cover.

      GTY762930Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      GTY747056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Interlock
      *b Waterproof Seal
  21. DISCONNECT MOTOR CABLE 
    WARNING:

    Be sure to wear insulated gloves.

    1. Using an insulated tool, remove the 6 bolts.
      GTY762914Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not allow any foreign matter or water to enter the inverter with converter assembly.
      • Do not touch the waterproof seal or terminals of the motor cable.
    2. Remove the 4 bolts and disconnect the motor cable from the inverter with converter assembly.
      GTY758183Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Waterproof Seal
      NOTE:
      • Do not allow any foreign matter or water to enter the inverter with converter assembly.
      • Do not touch the waterproof seal or terminals of the motor cable.
      • Do not damage the terminals, connector housing or inverter with converter assembly during disconnection.
      • Insulate the disconnected terminals with insulating tape.
      • After disconnecting the motor cable, wrap it with a plastic bag or equivalent to protect it.
      • Cover the hole where the cable was connected with tape (non-residue type) or equivalent to prevent entry of foreign matter.
      • To prevent the wire harness from being caught, make sure to bundle the wire harness using insulating tape or equivalent.
        GTY829879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. REMOVE INVERTER WITH CONVERTER ASSEMBLY 
    WARNING:

    Be sure to wear insulated gloves.

    1. Remove the 5 bolts, 2 nuts and inverter with converter assembly.
      GTY786989Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • When removing the inverter with converter assembly, be careful not to damage the parts around it.
      • To prevent damage, do not hold the inverter with converter assembly by the connectors, brackets or cooling pipes.
      • To prevent damage due to static electricity, do not touch the terminals of the disconnected connectors.

      HINT: 

      Even after the coolant is drained, coolant remains in the inverter due to its internal structure. Therefore, seal or cover the pipes when removing the inverter with converter assembly so that coolant does not spill out.

  23. REMOVE NO. 1 INVERTER BRACKET 
    NOTE:

    Make sure to support the inverter with converter assembly at the positions shown in the illustration, otherwise it may be damaged.

    GTY773830Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Bottom of Inverter with Converter Assembly
    *b Support
    1. Set the inverter with converter assembly on wooden blocks.
      GTY763647Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Wooden Block
    2. Remove the 2 bolts and No. 1 inverter bracket from the inverter with converter assembly.
  24. REMOVE NO. 2 INVERTER BRACKET 
    1. Remove the 2 bolts and No. 2 inverter bracket from the inverter with converter assembly.
      GTY766244Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Wooden Block
  25. REMOVE WIRE HARNESS CLAMP BRACKET 
    1. Remove the 2 bolts and 2 wire harness clamp brackets from the inverter with converter assembly.
      GTY762916Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt and wire harness clamp bracket from the inverter with converter assembly.
      GTY762917Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the bolt and wire harness clamp bracket from the inverter with converter assembly.
      GTY762915Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  26. REMOVE INVERTER PROTECTOR 
    1. Remove the bolt and inverter protector from the inverter with converter assembly.
      GTY773141Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002