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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) >> Ion EXCHANGER >> Installation [11/2020 - ] >> Procedure

Installation [11/2020 - ]: Procedure

  1. INSTALL FC COOLING WATER ION EXCHANGER ASSEMBLY 
    1. GTY1003971Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Attach the clamp.
      2. Install the FC cooling water ion exchanger assembly to the FC stack assembly with the 3 bolts.

        Torque: 12 N.m (122 kgf/cm, 9 ft.lbf) 

        NOTE:

        Tightening order: Temporarily install bolt A → Temporarily install bolt B → Tighten bolt C → Tighten bolt A → Tighten bolt B

  2. INSTALL FC COOLING WATER ION EXCHANGER BRACKET 
    1. GTY1004785Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Install the FC cooling water ion exchanger bracket to the FC stack assembly and FC cooling water ion exchanger assembly with the 2 bolts

        Torque: 9.0 N.m (92 kgf/cm, 80 in.lbf) 

        NOTE:

        Tightening order: Temporarily install bolt A → Tighten bolt B → Tighten bolt A

  3. CONNECT NO. 4 FC INVERTER COOLING PIPE 

    Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

  4. CONNECT RADIATOR TO RESERVE TANK HOSE 
  5. CONNECT NO. 13 FC RADIATOR HOSE 
    1. GTY1003087Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a FC Cooling Water Ion Exchanger Assembly Rib *b Hose Paint Mark
      *c 2 to 7 mm (0.0787 to 0.2756 in.) *d 120°
      1. Connect the No. 13 FC radiator hose to the FC cooling water ion exchanger assembly and slide the hose clip to secure it.
        NOTE:
        • Align the hose and the hose clip at the locations shown in the illustration and install them.
        • Make sure the No. 13 FC radiator hose is securely inserted to the stopper.
      2. When connecting, if it is difficult to insert the hose, coat it with new coolant (Toyota genuine FC stack coolant (Pre-mixed)).
  6. CONNECT NO. 9 FC RADIATOR HOSE 
    1. GTY1005008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a FC Cooling Water Ion Exchanger Assembly Rib *b Hose Paint Mark
      *c 2 to 7 mm (0.0787 to 0.2756 in.) *d 120°
      1. Connect the No. 9 FC radiator hose to the FC cooling water ion exchanger assembly and slide the hose clip to secure it.
        NOTE:
        • Align the hose and the hose clip at the locations shown in the illustration and install them.
        • Make sure the No. 9 FC radiator hose is securely inserted to the stopper.
      2. When connecting, if it is difficult to insert the hose, coat it with new coolant (Toyota genuine FC stack coolant (Pre-mixed)).
  7. CONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 

    Refer to INSTALLATION [11/2020 - 12/2022] , or refer to INSTALLATION [12/2022 - ]

  8. ADD COOLANT (TOYOTA GENUINE FC STACK COOLANT (Pre-mixed)) 

    See step  7

  9. INSPECT FOR COOLANT (TOYOTA GENUINE FC STACK COOLANT (Pre-mixed)) LEAK 

    Refer to PROCEDURE - Step 2

  10. INSTALL LOWER RADIATOR AIR DEFLECTOR 
  11. INSTALL RADIATOR COVER PLATE 
  12. INSTALL UPPER RADIATOR SUPPORT SEAL 
  13. INSTALL FC STACK COVER SUB-ASSEMBLY 
  14. INSTALL FRONT COMPARTMENT UNDER COVER ASSEMBLY 

    Refer to PROCEDURE - Step 163 [11/2020 - 12/2022] , or refer to PROCEDURE - Step 163 [12/2022 - 12/2023] , or refer to PROCEDURE - Step 163 [12/2023 - ]

  15. INSTALL FRONT LOWER SUSPENSION MEMBER PROTECTOR 

    Refer to PROCEDURE - Step 164 [11/2020 - 12/2022] , or refer to PROCEDURE - Step 164 [12/2022 - 12/2023] , or refer to PROCEDURE - Step 164 [12/2023 - ]

  16. INSTALL FRONT COMPARTMENT UNDER COVER 
  17. INITIALIZATION 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Refer to PROCEDURE - Step 5 [11/2020 - 12/2022] , or refer to PROCEDURE - Step 5 [12/2022 - ]
  18. INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL 

    HINT: 

    When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

    Refer to AUTOMATIC LEARNING CHART [11/2020 - 11/2021] , or refer to AUTOMATIC LEARNING CHART [11/2021 - 12/2023] , or refer to AUTOMATIC LEARNING CHART [12/2023 - ]