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 >> Sub Radiator >> 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 HEADLAMP ASSEMBLY RH 

    HINT: 

    Use the same procedure as for the LH side.

    Refer to REMOVAL [06/2015 - ]

  9. REMOVE NO. 3 RADIATOR AIR GUIDE 
    1. Remove the clip.
      GTY576170Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. While pinching the clamp portion of the No. 3 radiator air guide from both sides as shown in the illustration, pull it out towards the bottom of the vehicle, and remove the No. 3 radiator air guide from the radiator support LWR.
      GTY575535Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Pinch
      Pull Out Towards Bottom of Vehicle
      NOTE:
      • During removal, make sure not to damage the clamp portion.
      • If the clamp portion has been damaged, replace the No. 3 radiator air guide with a new one.
  10. REMOVE SUB-RADIATOR AIR GUIDE 
    1. Remove the 4 clips and sub-radiator air guide from the sub-radiator assembly.
      GTY551636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. DISCONNECT FC SUB-RADIATOR INLET HOSE 
    1. Slide the hose clip and disconnect the FC sub-radiator inlet hose from the sub-radiator assembly.
      GTY551637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • When disconnecting, be careful not to damage the hose interior surface or port of sub-radiator assembly portion.
      • Perform the work by hand. Do not use tools.
    2. To prevent contamination by foreign matter, cover the connecting portions of the FC sub-radiator inlet hose and sub-radiator assembly with plastic bags.
      GTY591725Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Plastic Bag
  12. DISCONNECT FC SUB-RADIATOR OUTLET HOSE 
    1. Slide the hose clip and disconnect the FC sub-radiator outlet hose from the sub-radiator assembly.
      GTY551631Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • When disconnecting, be careful not to damage the hose interior surface or port of sub-radiator assembly portion.
      • Perform the work by hand. Do not use tools.
    2. To prevent contamination by foreign matter, cover the connecting portions of the FC sub-radiator outlet hose and sub-radiator assembly with plastic bags.
      GTY539534Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Plastic Bag
  13. REMOVE SUB-RADIATOR ASSEMBLY 
    1. Disengage the 2 clamps to separate the wire harness from the No. 2 radiator bracket.
      GTY551632Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 3 bolts and sub-radiator assembly together with the No. 1 radiator bracket and No. 2 radiator bracket from the vehicle.
      GTY551633Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 2 bolts and No. 2 radiator bracket from the sub-radiator assembly.
      GTY600413Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 2 bolts and No. 1 radiator bracket from the sub-radiator assembly.
      GTY551640Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002