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On-Vehicle Inspection [11/2021 - ]: Procedure

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  1. CHECK RADIATOR CAP SUB-ASSEMBLY 
    WARNING:

    Do not remove the reserve tank cap, radiator cap sub-assembly or radiator drain cock plug while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

    1. Measure the valve opening pressure.
      GTY430413Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rubber Packing (1)
      *b Rubber Packing (2)
      *c Rubber Packing (3)
      *d Valve Seat
      1. If there are water stains or foreign matter on the rubber packing (1), (2) or (3), clean the part(s) with water and finger scouring.
      2. Check that the rubber packings (1), (2) and (3) are not deformed, cracked or swollen.
      3. Check that the rubber packing (3) and valve seat are not stuck together.
      4. Apply engine coolant to the rubber packings (2) and (3) before using a radiator cap tester.
      5. When using the radiator cap tester, tilt it upward 30° or more.
        GTY452114Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Radiator Cap Sub-assembly
        *a Radiator Cap Tester
        *b 30° or more
      6. Pump the radiator cap tester several times, and check the maximum pressure.

        Pumping Speed

        1 pump per second

        Result

        Item Specified Condition
        Standard pressure
        (for brand-new radiator cap sub-assembly)        		 74 to 103 kPa (0.8 to 1.1 kgf/cm2 , 10.7 to 14.9 psi)
        Minimum pressure
        (for used radiator cap sub-assembly)        		 59 kPa (0.6 kgf/cm2 , 8.6 psi)

        HINT: 

        Even if the radiator cap sub-assembly cannot maintain the maximum pressure, it is not a defect.

        If the maximum pressure is less than the minimum pressure, replace the radiator cap sub-assembly.

  2. CHECK RADIATOR ASSEMBLY FOR CLOGGING 
    WARNING:

    To prevent burns, do not touch the engine or other high temperature components while the engine is hot.

    1. Remove the radiator upper air guide plate.

      Refer to PROCEDURE - Step 1 [11/2021 - 03/2024] , or refer to PROCEDURE - Step 1 [03/2024 - ]

    2. Remove the inlet air cleaner assembly.

      Refer to PROCEDURE - Step 4

    3. Shine an electric light at the radiator assembly from the front and check the radiator assembly for clogging using a mirror.
      GTY1078357Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a OK *b NG
      *c Electric Light *d Mirror
      *e Areas to be checked - -

      OK

      The radiator assembly is not clogged.

      If the radiator assembly is clogged, clean it.

    4. Install the inlet air cleaner assembly.

      Refer to PROCEDURE - Step 7

    5. Install the radiator upper air guide plate.
  3. CLEAN RADIATOR ASSEMBLY 
    WARNING:

    To prevent burns, do not touch the engine or other high temperature components while the engine is hot.

    1. Remove the radiator upper air guide plate.

      Refer to PROCEDURE - Step 1 [11/2021 - 03/2024] , or refer to PROCEDURE - Step 1 [03/2024 - ]

    2. Remove the inlet air cleaner assembly.

      Refer to PROCEDURE - Step 4

    3. Cover the opening of each air duct with a piece of cloth.
    4. Clean the cooler condenser assembly and radiator assembly (for Inverter Coolant).
      1. Check that the washer nozzle is not clogged.
      2. Insert the washer nozzle into the space in front and spray it.
        NOTE:
        • Clean the fins of the cooler condenser assembly and radiator assembly (for Inverter Coolant) by spraying the entire area for 150 seconds. Repeat this process twice.
        • Set the air pressure to 0.4 MPa (4.1 kgf/cm2 , 58 psi).
        • Check that water sprays in mist form from the washer nozzle.
        • Keep the washer nozzle parallel to the cooler condenser assembly and radiator assembly (for Inverter Coolant).
        • Do not allow the washer nozzle to contact the fins of the cooler condenser assembly and radiator assembly (for Inverter Coolant).
        • Keep the washer nozzle moving while spraying water.
        • Do not spray the cooler compressor assembly excessively.
        GTY1077836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Leave the cooler condenser assembly and radiator assembly (for Inverter Coolant) as is for 10 minutes to let the water penetrate the dirt.
      4. Clean the cooler condenser assembly and radiator assembly (for Inverter Coolant) again.
        NOTE:
        • Clean the fins of the cooler condenser assembly and radiator assembly (for Inverter Coolant) by spraying the entire area for 150 seconds. Repeat this process 4 times.
        • Set the air pressure to 0.4 MPa (4.1 kgf/cm2 , 58 psi).
        • Check that water sprays in mist form from the washer nozzle.
        • Keep the washer nozzle parallel to the cooler condenser assembly and radiator assembly (for Inverter Coolant).
        • Do not allow the washer nozzle to contact the fins of the cooler condenser assembly and radiator assembly (for Inverter Coolant).
        • Keep the washer nozzle moving while spraying water.
        • Do not spray the cooler compressor assembly excessively.
      5. Using an air blow gun, dry the cooler condenser assembly and radiator assembly (for Inverter Coolant) for 3 minutes.
    5. Disconnect the cooling fan motor connector.
      GTY1077790Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Disengage the clamp to disconnect the wire harness from the fan with motor assembly.
    7. Rotate the lever while pushing the lock, and disconnect the cooling fan motor connector.
      GTY1077791Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      After disconnecting the cooling fan motor connector, make sure that dirt, water or other foreign matter does not contact the connecting parts of the cooling fan motor connector.

    8. Disengage the 2 clamps to disconnect the wire harness from the fan with motor assembly.
    9. Disengage the 2 claws and separate the fan with motor assembly from the radiator assembly.
      GTY1077796Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. Clean the radiator assembly.
      1. Insert the washer nozzle between the radiator assembly and fan with motor assembly and spray the radiator assembly.
        GTY1077800Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:
        • Clean the fins of the radiator assembly by spraying the entire area for 150 seconds. Repeat this process twice.
        • Set the air pressure to 0.4 MPa (4.1 kgf/cm2 , 58 psi).
        • Check that water sprays in mist form from the washer nozzle.
        • Keep the washer nozzle parallel to the radiator assembly.
        • Do not allow the washer nozzle to contact the fins of the radiator assembly.
        • Keep the washer nozzle moving while spraying water.
      2. Leave the radiator assembly as is for 10 minutes to let the water penetrate the dirt.
      3. Clean the radiator assembly again.
        NOTE:
        • Clean the fins of the radiator assembly by spraying the entire area for 150 seconds. Repeat this process 4 times.
        • Set the air pressure to 0.4 MPa (4.1 kgf/cm2 , 58 psi).
        • Check that water sprays in mist form from the washer nozzle.
        • Keep the washer nozzle parallel to the radiator assembly.
        • Do not allow the washer nozzle to contact the fins of the radiator assembly.
        • Keep the washer nozzle moving while spraying water.
      4. Using an air blow gun, dry the radiator assembly for 3 minutes.
    11. Check the fins of the radiator assembly for clogs again.

      If the radiator assembly is clogged, clean the radiator assembly, cooler condenser assembly and radiator assembly (for Inverter Coolant) again.

    12. Check that the 2 guides at the bottom are engaged to the radiator assembly.
      GTY1077804Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    13. Engage the 2 claws to install the fan with motor assembly to the radiator assembly.
    14. Engage the 2 clamps to connect the wire harness to the fan with motor assembly.
      GTY1077807Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    15. Connect the cooling fan motor connector and rotate the lever to lock it.
      NOTE:
      • When connecting the cooling fan motor connector, make sure that the connecting parts of the cooling fan motor connector are free of dirt, water or other foreign matter.
      • Be sure to securely connect the cooling fan motor connector.
    16. Engage the clamp to connect the wire harness to the fan with motor assembly.
    17. Connect the cooling fan motor connector.
    18. Remove the piece of cloth from the opening of each air duct.
    19. Install the inlet air cleaner assembly.

      Refer to PROCEDURE - Step 7

    20. Install the radiator upper air guide plate.
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