COOLING SYSTEM ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT FOR COOLANT LEAK

    CAUTION:

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


    1. Remove the reserve tank cap.

    2. A00Y626C05
      *a Radiator Cap Tester

      Fill the radiator assembly with engine coolant, and then install a radiator cap tester.

    3. Warm up the engine.

    4. Pump the radiator cap tester to 108 kPa (1.1 kgf/cm2, 16 psi), and then check that the pressure does not drop.

      If the pressure drops, check the hoses, radiator assembly and engine water pump assembly for leaks.

      If there are no signs of external coolant leaks, check the heater core, cylinder block and cylinder head.

    5. Install the reserve tank cap.

  2. INSPECT RESERVOIR TANK ENGINE COOLANT LEVEL


    1. A00Y8Q8C01
      *a Full Line
      *b Low Line

      Check that the engine coolant level is between the low and full lines when the engine is cold.

      If the engine coolant level is low, check for leaks and add "TOYOTA Super Long Life Coolant" or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite and non-borate coolant with long life hybrid organic acid technology to the full line.

      Note

      Do not substitute plain water for engine coolant.

  3. INSPECT ENGINE COOLANT QUALITY

    CAUTION:

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


    1. Remove the reserve tank cap.

    2. Check if there are any excessive deposits of rust or scale around the reserve tank cap and radiator reserve tank filler hole. Also, the engine coolant should be free of oil.

      If excessively dirty, replace the coolant.

    3. Install the reserve tank cap.