COOLING SYSTEM ON-VEHICLE INSPECTION

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. INSPECT FOR COOLANT LEAK (for Engine)

    CAUTION:

    Do not remove the reservoir tank 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 reservoir tank cap.

    2. A01JB8R

      Fill the radiator and reservoir with coolant, and then attach a radiator cap tester.

    3. Put the engine in inspection mode Click here.

    4. Warm up the engine.

    5. Using the reservoir cap tester, increase the pressure inside the radiator to 108 kPa (1.1 kgf/cm2, 16 psi), and check that the pressure does not drop. If the pressure drops, check the hoses, radiator, front exhaust pipe assembly and the heater hose around and engine water pump assembly 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 reservoir tank cap.

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


    1. A01JC0TE02
      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.

      Tech Tips

      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.

  3. INSPECT ENGINE COOLANT QUALITY (for Engine)


    1. Remove the reservoir tank cap.

      CAUTION:

      Do not remove the reservoir tank 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 reservoir tank cap.