LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 210 (Engine Cooling System (A25A-FKS) - Service Information) >> Radiator >> On-Vehicle Inspection [08/2020 - ] >> Procedure

On-Vehicle Inspection [08/2020 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus ES 250, 2023 Lexus ES 250, 2022 Lexus ES 250, and 2021 Lexus ES 250. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK RADIATOR CAP SUB-ASSEMBLY 
    WARNING:

    Do not remove the radiator cap sub-assembly 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 cool air intake duct seal.

      Refer to PROCEDURE - Step 1 [06/2018 - 08/2021] , or refer to PROCEDURE - Step 1 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 1 [09/2022 - ]

    2. Remove the inlet air cleaner assembly.

      Refer to PROCEDURE - Step 21 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 21 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 21 [09/2022 - ]

    3. Shine an electric light at the radiator assembly and cooler condenser assembly from the front of the cooler condenser assembly and check the radiator assembly for clogging using a mirror.
      GTY746329Courtesy 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 47 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 48 [08/2021 - ]

    5. Install the cool air intake duct seal.

      Refer to PROCEDURE - Step 2 [06/2018 - 08/2021] , or refer to PROCEDURE - Step 2 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 2 [09/2022 - ]

  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 cool air intake duct seal.

      Refer to PROCEDURE - Step 1 [06/2018 - 08/2021] , or refer to PROCEDURE - Step 1 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 1 [09/2022 - ]

    2. Remove the inlet air cleaner assembly.

      Refer to PROCEDURE - Step 21 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 21 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 21 [09/2022 - ]

    3. Cover the opening of each air duct with a piece of cloth.
    4. Clean the cooler condenser assembly.
      1. Check that the washer nozzle is not clogged.
      2. Insert the washer nozzle into the space in front of the cooler condenser assembly and spray it.
        NOTE:
        • Clean the fins of the cooler condenser 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 cooler condenser assembly.
        • Do not allow the washer nozzle to contact the fins of the cooler condenser assembly.
        • Keep the washer nozzle moving while spraying water.
        • Do not spray the cooler compressor assembly or generator assembly excessively.
        GTY760238Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Leave the cooler condenser assembly as is for 10 minutes to let the water penetrate the dirt.
      4. Clean the cooler condenser assembly again.
        NOTE:
        • Clean the fins of the cooler condenser 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 cooler condenser assembly.
        • Do not allow the washer nozzle to contact the fins of the cooler condenser assembly.
        • Keep the washer nozzle moving while spraying water.
        • Do not spray the cooler compressor assembly or generator assembly excessively.
      5. Using an air blow gun, dry the cooler condenser assembly for 3 minutes.
    5. Disengage the claw and raise the lock lever to disconnect the cooling fan motor connector as shown in the illustration.
      GTY760465Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lock Lever
      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.

    6. Disengage the wire harness clamp.
    7. Disengage the 2 claws and separate the fan with motor assembly from the radiator assembly.
      GTY760240Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Clean the radiator assembly.
      1. Insert the washer nozzle between the radiator assembly and fan with motor assembly and spray the radiator assembly.
        GTY772871Courtesy 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.
    9. Check the fins of the radiator assembly for clogs again.

      If the radiator assembly is clogged, clean the cooler condenser assembly and radiator assembly again.

    10. Check that the 2 guides at the bottom are engaged to the radiator assembly.
      GTY760239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    11. Engage the 2 claws to install the fan with motor assembly to the radiator assembly.
    12. Engage the wire harness clamp.
      GTY773278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lock Lever
    13. Connect the cooling fan motor connector and push down the lock lever to engage the claw as shown in the illustration.
      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.
    14. Remove the piece of cloth from the opening of each air duct.
    15. Install the inlet air cleaner assembly.

      Refer to PROCEDURE - Step 47 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 48 [08/2021 - ]

    16. Install the cool air intake duct seal.

      Refer to PROCEDURE - Step 2 [06/2018 - 08/2021] , or refer to PROCEDURE - Step 2 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 2 [09/2022 - ]

scientia non olet · About LEMON Manuals