LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2019 >> Mirai >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - Service Information >> Rotary Valve >> Removal [06/2015 - ] >> Procedure

Removal [06/2015 - ]: Procedure

  1. PRECAUTION 
    NOTE:
    • The coolant (Toyota genuine FC stack coolant (Pre-mixed)) is an exclusive coolant.
    • The coolant (Toyota genuine FC stack coolant (Pre-mixed)) cannot be reused, so when filling, be sure to fill with new coolant (Toyota genuine FC stack coolant (Pre-mixed)).
    • To prevent degradation of coolant (Toyota genuine FC stack coolant (Pre-mixed)) performance, do not add or fill any other substances such as tap water or battery electrolyte refill liquid.
    • Do not use cotton work gloves or other gloves that could shed fibers.
    • DO NOT use any container that has previously been used to fill substances such as oil.
    • To prevent foreign matter from contaminating the coolant (Toyota genuine FC stack coolant (Pre-mixed)) passages, wash out the prepared container with tap water, then wipe away any water remaining inside the container before using it.
    • If the coolant (Toyota genuine FC stack coolant (Pre-mixed)) passages are filled incorrectly, follow the countermeasures according to "Countermeasures when coolant (Toyota genuine FC stack coolant (Pre-mixed)) passages are filled incorrectly".

      Refer to PRECAUTION [06/2015 - ] 

    • When the vehicle is parked with the power switch off, if the FC control ECU judges that the FC stack temperature will go below 0°C (32°F), it activates the FC air compressor, hydrogen pump and FC cooling water pump for a maximum of 180 seconds and drains water from the FC stack assembly. When performing inspection or repairs with the power switch off (not on (IG) or on (READY)), disconnect the cable from the negative (-) auxiliary battery terminal before performing work.
  2. REMOVE FRONT BUMPER LOWER ABSORBER 

    Refer to PROCEDURE - Step 7 [06/2015 - 11/2018] , or refer to PROCEDURE - Step 7 [11/2018 - ]

  3. REMOVE NO. 2 MOTOR UNDER COVER 

    Refer to PROCEDURE - Step 1 [06/2015 - 11/2018] , or refer to PROCEDURE - Step 1 [11/2018 - ]

  4. REMOVE FRONT FLOOR COVER LH 

    Refer to PROCEDURE - Step 2 [06/2015 - 11/2018] , or refer to PROCEDURE - Step 2 [11/2018 - ]

  5. REMOVE FRONT FLOOR COVER RH 

    Refer to PROCEDURE - Step 3 [06/2015 - 11/2018] , or refer to PROCEDURE - Step 3 [11/2018 - ]

  6. REMOVE FRONT SUSPENSION MEMBER TO CROSSMEMBER BRACE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 17 [06/2015 - 11/2018] , or refer to PROCEDURE - Step 17 [11/2018 - ]

  7. DRAIN COOLANT (TOYOTA GENUINE FC STACK COOLANT (Pre-mixed)) 

    See step  7

  8. REMOVE WINDSHIELD WIPER MOTOR AND LINK 

    Refer to REMOVAL [06/2015 - ]

  9. REMOVE NO. 2 HEATER AIR DUCT SPLASH SHIELD SEAL 

    Refer to PROCEDURE - Step 8 [06/2015 - 11/2018] , or refer to PROCEDURE - Step 8 [11/2018 - ]

  10. REMOVE WATER GUARD PLATE LH 

    Refer to PROCEDURE - Step 9 [06/2015 - 11/2018] , or refer to PROCEDURE - Step 9 [11/2018 - ]

  11. REMOVE COWL BODY MOUNTING REINFORCEMENT RH 

    Refer to PROCEDURE - Step 10 [06/2015 - 11/2018] , or refer to PROCEDURE - Step 10 [11/2018 - ]

  12. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 11 [06/2015 - 11/2018] , or refer to PROCEDURE - Step 11 [11/2018 - ]

  13. REMOVE INVERTER COVER 

    Refer to PROCEDURE - Step 16 [06/2015 - 11/2018] , or refer to PROCEDURE - Step 16 [11/2018 - ]

  14. REMOVE FC COOLING WATER TEMPERATURE CONTROL VALVE 
    1. Disconnect the 2 connectors.
      GTY551507Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the clamp to disconnect the No. 2 motor wire from the inverter terminal cover.
      GTY551508Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect the electric heater sub-assembly connector.
      GTY565096Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disconnect the FC cooling water temperature control valve connector.
      GTY603411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Disengage the 3 clamps to remove the No. 2 motor wire from the FC cooling water valve bracket.
      GTY603412Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Disengage the clamp to separate the FC converter power outlet cable from the FC cooling water valve bracket.
      GTY600382Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Remove the bolt and 2 nuts.
      GTY551492Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Slide the hose clip and disconnect the No. 1 FC cooling water valve outlet hose from the FC cooling water temperature control valve.
      GTY565097Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • When disconnecting, be careful not to damage the hose interior surface or port of FC cooling water temperature control valve portion.
      • Perform the work by hand. Do not use tools.
    9. To prevent contamination by foreign matter, cover the connecting portions of the No. 1 FC cooling water valve outlet hose and FC cooling water temperature control valve with plastic bags.
      GTY588041Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Plastic Bag
    10. Slide the hose clip and disconnect the No. 1 FC cooling water valve inlet hose from the FC cooling water temperature control valve.
      GTY551506Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • When disconnecting, be careful not to damage the hose interior surface or port of FC cooling water temperature control valve portion.
      • Perform the work by hand. Do not use tools.
    11. To prevent contamination by foreign matter, cover the connecting portions of the No. 1 FC cooling water valve inlet hose and FC cooling water temperature control valve with plastic bags.
      GTY595781Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Plastic Bag
    12. Slide the hose clip, separate the No. 1 FC cooling bypass hose from the FC cooling water temperature control valve, and remove the FC cooling water temperature control valve together with the FC cooling water valve bracket.
      GTY565068Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • When disconnecting, be careful not to damage the hose interior surface or port of FC cooling water temperature control valve portion.
      • Perform the work by hand. Do not use tools.
      • If the FC cooling water temperature control valve has been struck or dropped, replace it.
    13. To prevent contamination by foreign matter, cover the connecting portions of the No. 1 FC cooling by-pass hose and FC cooling water temperature control valve with plastic bags.
      GTY551530Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Plastic Bag
    14. Remove the 3 nuts and FC cooling water temperature control valve from the FC cooling water valve bracket.
      GTY551498Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the FC cooling water temperature control valve has been struck or dropped, replace it.

scientia non olet · About LEMON Manuals