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Home >> Toyota >> 2021 >> Mirai XLE >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - Service Information (1 Of 2) >> Rotary Valve >> Removal [11/2021 - 12/2022] >> Procedure

Removal [11/2021 - 12/2022]: Procedure

  1. CAUTIONS FOR HIGH VOLTAGE SYSTEM COMPONENTS 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 Refer to PROCEDURE - Step 1
  2. CAUTIONS FOR COOLANT (FC STACK COOLANT) 

    Refer to PRECAUTION [11/2020 - ] 

  3. PRECAUTION 

    Refer to PRECAUTION [11/2020 - ]

  4. REMOVE FC COOLING WATER ION EXCHANGER ASSEMBLY 

    Refer to REMOVAL [11/2021 - 12/2022] 

  5. REMOVE SERVICE PLUG GRIP 

    Refer to REMOVAL [11/2021 - 12/2022]

  6. DISCONNECT FC CONVERTER POWER OUTLET CABLE (INVERTER WITH CONVERTER ASSEMBLY) 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 Refer to PROCEDURE - Step 18
  7. REMOVE CONNECTOR COVER ASSEMBLY 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 Refer to PROCEDURE - Step 11
  8. CHECK TERMINAL VOLTAGE 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 Refer to PROCEDURE - Step 12
  9. INSTALL CONNECTOR COVER ASSEMBLY 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 Refer to PROCEDURE - Step 18
  10. DISCONNECT FC CONVERTER POWER OUTLET CABLE (INVERTER WITH CONVERTER ASSEMBLY) 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    WARNING:

    Wear insulated gloves.
    1. GTY1004887Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. REMOVE FC CONVERTER POWER OUTLET BRACKET 
    1. GTY1003647Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE NO. 2 RELAY BLOCK COVER 

    Refer to PROCEDURE - Step 127

  13. DISCONNECT STACK WIRE 
    1. GTY1003789Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. REMOVE NO. 2 COOLER BRACKET 
    1. GTY1003791Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. REMOVE NO. 9 FC RADIATOR HOSE 
    1. GTY1003949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Slide the clip and remove the No. 9 FC radiator hose from the FC cooling water temperature sensor control valve.
      2. To prevent contamination by foreign matter, cover the connecting portions of the No. 9 FC radiator hose and FC cooling water temperature control valve with plastic bags.
  16. DISCONNECT NO. 7 FC RADIATOR HOSE 
    1. GTY1003308Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Slide the clip and disconnect the No. 7 FC radiator hose from the FC cooling water temperature sensor control valve.
      2. To prevent contamination by foreign matter, cover the connecting portions of the No. 7 FC radiator hose and FC cooling water temperature control valve with plastic bags.
  17. REMOVE FC COOLING WATER TEMPERATURE CONTROL VALVE 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • When installing, do not hold the FC cooling water temperature control valve by its port portion.
    • If the FC cooling water temperature control valve has been struck or dropped, replace it.
    1. GTY1004351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the 3 bolts and disconnect the connector.
      2. To prevent contamination by foreign matter, cover the connecting portions of the FC cooling water temperature control valve with plastic bags.
      3. Slide the clip and remove the No. 6 FC radiator hose from the FC cooling water temperature sensor control valve.
      4. To prevent contamination by foreign matter, cover the connecting portions of the No. 6 FC radiator hose and FC cooling water temperature control valve with plastic bags.
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