COOLING SYSTEM ON-VEHICLE INSPECTION


  1. INSPECT FOR COOLANT LEAK


    1. Remove the reserve tank cap.

      CAUTION:

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

    2. A01CB9EE02
      Text in Illustration
      *1 Radiator Cap Tester

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

    3. Warm up the engine.

    4. Pump the radiator cap tester to 118 kPa (1.2 kgf/cm2, 17 psi), and then check that the pressure does not drop.

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

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

    5. Reinstall the reserve tank cap.

  2. INSPECT ENGINE COOLANT LEVEL OF RESERVOIR


    1. A01CFOIE02
      Text in Illustration
      *1 Full Line
      *2 Low Line

      The engine coolant level should be between the low and full lines when the engine is cold.

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

  3. INSPECT ENGINE COOLANT QUALITY


    1. Remove the reserve tank cap.

      CAUTION:

      Do not remove the reserve 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 for any excessive deposits of rust or scale around the reserve tank cap and radiator filler hole. The coolant should be free of oil.

      If excessively dirty, replace the coolant.

    3. Install the reserve tank cap.