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Home >> Toyota >> 2019 >> Sienna Limited, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transaxle System [UA80E] (Service Information)) >> Automatic Transaxle Fluid >> High Temperature Adjustment [08/2016 - ] >> Procedure

High Temperature Adjustment [08/2016 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. ADJUST FLUID LEVEL AT HIGH TEMPERATURE 
    WARNING:
    • Use caution while the engine is idling and the radiator fan is operating.
    • Be careful not to burn yourself when the automatic transaxle fluid temperature is high.
    1. Warm up and stop the engine.[*4]
    2. Connect the Techstream to the DLC3 with the ignition switch off.
    3. Turn the ignition switch ON and turn the Techstream on.
      NOTE:

      To reduce load, make sure that all electrical systems, such as the air conditioning, lighting system, electric fan and audio system, are off.

    4. Enter the following menus: Powertrain / Transmission / Data List.
    5. Select the Data List menu: A/T Oil Temperature No. 1

      Powertrain > Transmission > Data List 

      Tester Display
      A/T Oil Temperature No. 1
    6. Select the Data List menu: Engine Speed

      Powertrain > Transmission > Data List 

      Tester Display
      Engine Speed
    7. Check the ATF temperature.
      NOTE:
      • If the automatic transaxle fluid temperature tends to decrease when the automatic transaxle fluid temperature is between 85°C (185°F) and 90°C (194°F) with the engine idling, make sure that automatic transaxle fluid temperature is above 90°C (194°F) before starting work.
      • If the automatic transaxle fluid temperature tends to increase when the automatic transaxle fluid temperature is between 85°C (185°F) and 90°C (194°F) with the engine idling, make sure that automatic transaxle fluid temperature is below 85°C (185°F) before starting work.
      • If the automatic transaxle fluid temperature tends to not change when the automatic transaxle fluid temperature is between 85°C (185°F) and 90°C (194°F) with the engine idling, make sure that automatic transaxle fluid temperature is 87.5°C (189.5°F) before starting work.
    8. Depress and hold the brake pedal.
    9. Start the engine.
    10. Slowly move the shift lever from P to D, and then back to P.

      HINT: 

      Slowly move the shift lever to circulate the automatic transaxle fluid through each part of the automatic transaxle assembly.

    11. Lift the vehicle.
      NOTE:

      Set the vehicle on a lift so that the vehicle is kept level when it is lifted up (make sure the tilt angle from the front to rear and side to side of the vehicle is within +/-1°).

    12. Remove the No. 1 engine under cover.

      Refer to PROCEDURE - Step 7

    13. Remove the front fender apron seal LH.

      Refer to PROCEDURE - Step 9

    14. Remove the refill plug and gasket.
      GTY693071Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    15. GTY725834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a SST (Filler Plug Adapter)

      Install SST (filler plug adapter) to the refill plug hole.

      • SST: 09993-19025 
        1. 09993-10010
        2. 09993-01030
    16. GTY686371Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a SST (Vacuum Regulator)

      Connect SST (vacuum regulator) to SST (filler plug adapter).

      • SST: 09993-19025 
        1. 09993-10010
        2. 09993-01020
    17. Connect the hose of SST (tank assy) to SST (vacuum regulator).
      • SST: 09993-19025 
        1. 09993-20010
      NOTE:

      Ensure both of the valves of SST (tank assy) are closed by turning the valve handle (upper valve) and valve handle (lower valve) to the position shown in the illustration so they are perpendicular to the hoses.

      GTY697033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a SST (Vacuum Regulator)
      *b SST (Tank Assy)
      *c Hose of SST (Tank Assy)
      *d Valve Handle (Upper Valve)
      *e Valve Handle (Lower Valve)
    18. Connect a compressed air hose to SST (tank assy).
      NOTE:

      Do not apply 689 kPa (7.0 kgf/cm2 , 100 psi) or more of compressed air to SST (tank assy).

    19. Open the lower valve of SST (tank assy) by turning the valve handle (lower valve) so it is in-line with the compressed air hose.
      GTY660372Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    20. Open the upper valve of SST (tank assy) by turning the valve handle (upper valve) so it is in-line with the hose of SST (tank assy).
      NOTE:
      GTY701311Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Make sure to turn the valve handle (upper valve) slowly.
      • Make sure the value on the gauge of SST (vacuum regulator) stays between -10 to -20 kPa (-0.1 to -0.2 kgf/cm2 , -1.5 to -2.9 psi).
      • If the value on the gauge of SST (vacuum regulator) exceeds -20 kPa (-0.2 kgf/cm2 , -2.9 psi), make sure to turn the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assy) immediately, otherwise parts inside the automatic transaxle assembly may be damaged.

      HINT: 

      Vacuum will be applied to the automatic transaxle assembly when both of the valves of SST (tank assy) are opened to prevent automatic transaxle fluid loss when removing/installing the overflow plug.

      GTY480016Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    21. Using a 10 mm hexagon socket wrench, remove the overflow plug and gasket.
      WARNING:

      A small amount of HOT automatic transaxle fluid may leak from the overflow plug port during removal.

      HINT: 

      Place an transaxle housing under the overflow plug to collect any automatic transaxle fluid.

      GTY694221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    22. Install SST (adapter 18) to SST (overflow level gauge) and then install SST (overflow level gauge) to the overflow plug hole by hand until it is fully seated against the transaxle housing.
      • SST: 09993-0110009993-19025 
        1. 09993-10010
        2. 09993-01010
      NOTE:

      Ensure that the sliding tube of SST (overflow level gauge) is fully retracted into the housing of SST (overflow level gauge) before inserting it into the overflow plug hole.

      HINT: 

      The level/measurement indicator on SST (overflow level gauge) will read 0 mm (0 in.) when the sliding tube of SST (overflow level gauge) is fully retracted.

      GTY702942Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a SST (Overflow Level Gauge)
    23. Adjust SST (overflow level gauge) to the specified measurement according to the table below and lock the sliding scale of SST (overflow level gauge) by tightening the thumb screw.

      Specified Measurement

      Specified Measurement at Automatic Transaxle Fluid Temperature of 85°C (185°F) to 90°C (194°F)
      Engine Idle Speed (rpm) 600 to 800 80 mm (3.15 in.)
      NOTE:

      Before proceeding with the inspection, ensure the automatic transaxle fluid temperature is between 85°C (185°F) to 90°C (194°F) and the engine idle speed is within the range specified in the table above.

    24. Close the upper valve of SST (tank assy) by turning the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assy).
      NOTE:
      • Make sure to turn the valve handle (upper valve) slowly.
      • Make sure that the gauge of SST (vacuum regulator) reads 0 kPa (0 kgf/cm2 , 0 psi).

      HINT: 

      Vacuum that was applied to the automatic transaxle assembly will not be applied when the valve handle (upper valve) is closed.

      GTY480014Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    25. Observe automatic transaxle fluid flowing from the hose at the bottom of SST (overflow level gauge).
      • If the amount of automatic transaxle fluid that comes out of SST (overflow level gauge) is large, proceed to step [#1].
      • If no automatic transaxle fluid comes out of SST (overflow level gauge), proceed to step [#2].
    26. If the amount of automatic transaxle fluid that comes out of SST (overflow level gauge) is large. [#1]
      1. Wait until the automatic transaxle fluid flow slows and only drips come out.
        GTY707009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT: 

        The automatic transaxle fluid flow will not stop completely because the automatic transaxle fluid continues to expand as its temperature increases.

      2. Open the upper valve of SST (tank assy) by turning the valve handle (upper valve) so it is in-line with the hose of SST (tank assy).
        GTY480016Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:
        GTY701311Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • Make sure to turn the valve handle (upper valve) slowly.
        • Make sure the value on the gauge of SST (vacuum regulator) stays between -10 to -20 kPa (-0.1 to -0.2 kgf/cm2 , -1.5 to -2.9 psi) before proceeding to the next step.
        • If the value on the gauge of SST (vacuum regulator) exceeds -20 kPa (-0.2 kgf/cm2 , -2.9 psi), make sure to turn the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assy) immediately, otherwise parts inside the automatic transaxle assembly may be damaged.

        HINT: 

        Vacuum will be applied to the automatic transaxle assembly when both of the valves of SST (tank assy) are opened to prevent automatic transaxle fluid loss when removing/installing the overflow plug.

      3. Remove SST (overflow level gauge) from the overflow plug hole.
      4. Using a 10 mm hexagon socket wrench, install the overflow plug with a new gasket.

        Torque: 50 N*m (510 kgf*cm, 37 ft.*lbf) 

        NOTE:

        To prevent the gasket from being deformed when tightening, coat the gasket with ATF.

      5. Close the upper valve of SST (tank assy) by turning the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assy).
        GTY480014Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:
        • Make sure to turn the valve handle (upper valve) slowly.
        • Make sure that the gauge of SST (vacuum regulator) reads 0 kPa (0 kgf/cm2 , 0 psi).

        HINT: 

        Vacuum that was applied to the automatic transaxle assembly will not be applied when the valve handle (upper valve) is closed.

      6. Close the lower valve of SST (tank assy) by turning the valve handle (lower valve) so it is perpendicular to the compressed air hose.
        GTY480012Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      7. Disconnect the compressed air hose from SST (tank assy).
      8. Disconnect the hose of SST (tank assy) from SST (vacuum regulator).
      9. Disconnect SST (vacuum regulator) from SST (filler plug adapter).
      10. Remove SST (filler plug adapter) from the refill plug hole.
    27. If no automatic transaxle fluid comes out of SST (overflow level gauge). [#2]
      1. Remove SST (filler plug adapter) from the refill plug hole.
        GTY725834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a SST (Filler Plug Adapter)
      2. Add automatic transaxle fluid through the refill plug hole until fluid comes out of SST (overflow level gauge).
        GTY708957Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a SST (Overflow Level Gauge) - -
        NOTE:

        Use Toyota Genuine ATF WS.

      3. Wait until the automatic transaxle fluid flow slows and only drips come out.
        GTY707009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT: 

        The automatic transaxle fluid flow will not stop completely because the automatic transaxle fluid continues to expand as its temperature increases.

      4. Install SST (filler plug adapter) to the refill plug hole.
        GTY725834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a SST (Filler Plug Adapter)
      5. Open the upper valve of SST (tank assy) by turning the valve handle (upper valve) so it is in-line with the hose of SST (tank assy).
        GTY480016Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:
        GTY701311Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • Make sure to turn the valve handle (upper valve) slowly.
        • Make sure the value on the gauge of SST (vacuum regulator) stays between -10 to -20 kPa (-0.1 to -0.2 kgf/cm2 , -1.5 to -2.9 psi) before proceeding to the next step.
        • If the value on the gauge of SST (vacuum regulator) exceeds -20 kPa (-0.2 kgf/cm2 , -2.9 psi), make sure to turn the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assy) immediately, otherwise parts inside the automatic transaxle assembly may be damaged.

        HINT: 

        Vacuum will be applied to the automatic transaxle assembly when both of the valves of SST (tank assy) are opened to prevent automatic transaxle fluid loss when removing/installing the overflow plug.

      6. Remove SST (overflow level gauge) from the overflow plug hole.
      7. Using a 10 mm hexagon socket wrench, install the overflow plug with a new gasket.

        Torque: 50 N*m (510 kgf*cm, 37 ft.*lbf) 

        NOTE:

        To prevent the gasket from being deformed when tightening, coat the gasket with ATF.

      8. Close the upper valve of SST (tank assy) by turning the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assy).
        GTY480014Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:
        • Make sure to turn the valve handle (upper valve) slowly.
        • Make sure that the gauge of SST (vacuum regulator) reads 0 kPa (0 kgf/cm2 , 0 psi).

        HINT: 

        Vacuum that was applied to the automatic transaxle assembly will not be applied when the valve handle (upper valve) is closed.

      9. Close the lower valve of SST (tank assy) by turning the valve handle (lower valve) so it is perpendicular to the compressed air hose.
        GTY480012Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      10. Disconnect the compressed air hose from SST (tank assy).
      11. Disconnect the hose of SST (tank assy) from SST (vacuum regulator).
      12. Disconnect SST (vacuum regulator) from SST (filler plug adapter).
      13. Remove SST (filler plug adapter) from the refill plug hole.
    28. Install the refill plug with a new gasket.

      Torque: 49 N*m (500 kgf*cm, 36 ft.*lbf) 

      NOTE:

      To prevent the gasket from being deformed when tightening, coat the gasket with ATF.

    29. Lower the vehicle.
    30. Turn the ignition switch off.
    31. Disconnect the Techstream from the DLC3.
  2. REBUILD WORK 

    See step  9

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