COOLING SYSTEM ON-VEHICLE INSPECTION


  1. INSPECT FOR COOLANT LEAK (for Engine)

    CAUTION:

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

    Note

    Before performing each inspection, turn the A/C switch off.


    1. Remove the radiator cap.

    2. A01NIZA

      Fill the radiator with coolant and attach a radiator cap tester.

    3. Put the engine in inspection mode Click here.

    4. Warm up the engine.

    5. Using the radiator cap tester, increase the pressure inside the radiator to 118 kPa (1.2 kgf/cm2, 17 psi), and check that the pressure does not drop.

      If the pressure drops, check the hoses, radiator, exhaust center pipe assembly and the heater hose around the water temperature switch and engine water pump for leaks. If no external leaks are found, check the heater core, cylinder block and cylinder head.

    6. Remove the radiator cap tester.

    7. Install the radiator cap.

  2. INSPECT ENGINE COOLANT LEVEL IN RESERVOIR (for Engine)


    1. A01NIBXE02
      Text in Illustration
      *1 Full Line
      *2 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 (for Engine)


    1. Remove the radiator cap.

      CAUTION:

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

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

      If excessively dirty, clean the coolant passage and replace the coolant.

    3. Install the radiator cap.