COOLANT(for Inverter) REPLACEMENT

PROCEDURE


  1. REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY

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  2. DRAIN COOLANT (for Inverter)

    Note


    • Do not reuse the drained coolant because it may contain foreign matter.

    • Collect the drained coolant and measure its volume to establish a benchmark. When adding coolant, make sure to add more coolant than the measured amount.


    1. Remove the reserve tank cap from the inverter reserve tank assembly.

      CAUTION:

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

    2. A01OCOX

      Loosen the radiator drain cock plug and drain the coolant.

      CAUTION:

      Use caution when handling coolant immediately after driving or in summer because it may be hot.

    3. Tighten the radiator drain cock plug.

  3. ADD COOLANT (for Inverter)

    Note


    • Do not reuse the drained coolant because it may contain foreign matter.

    • If the vehicle is driven with air in the inverter cooling system, damage may occur and the following DTCs may be stored.

      DTC Code Detection Item
      P0A01-726 Motor Electronics Coolant Temperature Sensor Circuit Range / Performance
      P0A04-725 Motor Electronics Coolant Temperature Sensor Circuit Intermittent
      P0A08-264 DC / DC Converter Status Circuit
      P0A78-284 Drive Motor "A" Inverter Performance
      P0A78-286 Drive Motor "A" Inverter Performance
      P0A7A-322 Generator Inverter Performance
      P0A7A-324 Generator Inverter Performance
      P0A93-346 Inverter Cooling System Performance
      P0A94-553 DC / DC Converter Performance
      P0A94-557 DC / DC Converter Performance
      P0AEE-277 Motor Inverter Temperature Sensor "A" Circuit Range / Performance
      P0AF1-276 Drive Motor Inverter Temperature Sensor "A" Circuit Intermittent / Erratic
      P0BCD-315 Generator Inverter Temperature Sensor Circuit Range / Performance
      P0BD0-314 Generator Inverter Temperature Sensor Circuit Intermittent / Erratic
      P0C39-626 DC / DC Converter Temperature Sensor "A" Range / Performance
      P0C3C-625 DC / DC Converter Temperature Sensor "A" Intermittent / Erratic
      P0C3E-628 DC / DC Converter Temperature Sensor "B" Range / Performance
      P0C41-627 DC / DC Converter Temperature Sensor "B" Intermittent / Erratic
      P0C73-776 Motor Electronics Coolant Pump "A" Control Performance

    1. A01OD3P

      Slowly pour coolant into the inverter reserve tank assembly until it reaches the full (F) line.

      Coolant Quantity
      for LHD
      2.1 liters (2.2 US qts, 1.8 Imp. qts)
      for RHD
      2.3 liters (2.4 US qts, 2.0 Imp. qts)

      Note

      To prevent foreign matter such as dust or dirt from entering the cooling system, make sure to confirm that the container used to add coolant is clean and free of foreign matter.

    2. When using the GTS:


      1. Connect the GTS to the DLC3.

      2. Turn the power switch on (IG).

      3. Enter the following menus: Powertrain / Hybrid Control / Active Test / Activate the Water Pump.


        Powertrain > Hybrid Control > Active Test
        Tester Display
        Activate the Water Pump

      4. Keep the coolant at the full (F) line in the inverter reserve tank assembly to compensate for the drop in coolant level when the air bleeds.

        Standard
        Air bleeding from the inverter cooling system is completed when the noise made by the inverter water pump assembly becomes smaller and the circulation of coolant in the inverter reserve tank assembly improves.

        Tech Tips


        • If free spinning of the inverter water pump assembly is detected for approximately 5 seconds, fail-safe control will be activated to suspend the operation of the pump for approximately 15 seconds and resume operation for approximately 4 seconds repeatedly. Operation of the inverter water pump assembly will return to normal if coolant is added.

        • Loud noise made by the inverter water pump assembly and poor circulation of coolant in the inverter reserve tank assembly indicate that there is air in the cooling system.

    3. When not using the GTS:


      1. Turn the power switch on (READY). [*1]

      2. Turn the power switch off and add coolant to the full (F) line because the coolant level drops as the air bleeds. [*2]

        Note


        • Make sure to turn the power switch off before adding SLLC.

        • Do not work on the components in the engine compartment while the power switch is on (READY) as the engine will operate intermittently.

      3. Repeat steps [*1] and [*2] until air bleeding from the cooling system is completed.

        Standard
        Air bleeding from the inverter cooling system is completed when the noise made by the inverter water pump assembly becomes smaller and the circulation of coolant in the inverter reserve tank assembly improves.

        Tech Tips

        Loud noise made by the inverter water pump assembly and poor circulation of coolant in the inverter reserve tank assembly indicate that there is air in the cooling system.

    4. A01OD3P

      After the air is completely bled from the cooling system, add coolant to the full (F) line of inverter reserve tank assembly and install the reserve tank cap.

  4. INSPECT FOR COOLANT LEAK (for Inverter)

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  5. INSTALL NO. 1 ENGINE UNDER COVER ASSEMBLY

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