COOLANT(for Inverter) ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT FOR COOLANT LEAK (for Inverter)


    1. Remove the reservoir tank cap (for inverter).

      CAUTION:

      To avoid the danger of being burned, do not remove the reservoir tank cap while the coolant for the inverter is still hot.

    2. A000QCI

      Install the radiator cap tester.

    3. Pump the radiator cap tester to 137 kPa (1.4 kgf/ cm2, 20 psi), and then check that the pressure does not drop.

      Tech Tips

      If the pressure drops, check the hoses, radiator, water pump, inverter with converter, and hybrid vehicle transaxle assembly for leaks.

    4. Reinstall the reservoir tank cap (for inverter).

  2. INSPECT COOLANT LEVEL IN RESERVOIR TANK (for Inverter)


    1. The coolant should be between the LOW and FULL lines when the coolant for the inverter is cold.

      Tech Tips

      If the coolant level is low, 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 COOLANT (for Inverter)


    1. Remove the reservoir tank cap (for inverter).

      CAUTION:

      To avoid the danger of being burned, do not remove the reservoir tank cap while the coolant for the inverter is still hot.

    2. Check for excessive deposits of rust or scale on and around the reservoir tank cap and its opening.

      Tech Tips

      If excessively dirty, replace the coolant for the inverter.

    3. Reinstall the reservoir tank cap (for inverter).

  4. INSPECT RESERVOIR TANK CAP (for Inverter)


    1. A000N3NE10
      Text in Illustration
      *1 O-ring
      *2 Rubber Packing

      Inspect the reservoir tank cap (for inverter).


      1. If there are water stains or foreign matter on the O-ring, clean it with water and finger scouring.

        Note

        Do not use any tools.

      2. Check that the O-ring is not deformed, cracked or damaged.

      3. Check that the O-ring is not swollen.

    2. A000NEKE14
      Text in Illustration
      *1 Radiator Cap Tester
      *2 Reservoir Tank Cap (for inverter)
      *a 30° or more

      Check the reservoir tank cap (for inverter) operation.


      1. Apply coolant (for inverter) to the O-ring and rubber packing before using a radiator cap tester.

      2. Install the reservoir tank cap (for inverter) to the radiator cap tester.

      3. Pump the cap tester several times, and check the maximum pressure.

        Judgment Criterion
        Standard value (for brand-new cap)

        94 to 122 kPa (1.0 to 1.2 kgf/cm2, 13.6 to 17.7 psi)
        Minimum standard value (for used cap)

        94 kPa (1.0 kgf/cm2, 13.6 psi)
        Pump speed 1 pump per second

        Note

        When using the cap tester, tilt it upward 30° or more.

        Tech Tips

        If the maximum pressure is less than the minimum standard value, replace the reservoir tank cap (for inverter).