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Automatic Transmission Fluid: Adjustment

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Fig 1: Automatic Transmission Fluid Refill And Adjustment
G10214223Courtesy of SUBARU OF AMERICA, INC.
NOTE:
  • Fill in auto fluid WS.
  • Be sure to always park the vehicle on a level surface when adjusting the fluid amount.
  • When a large amount of fluid filling is required for operations including replacement of automatic transmission Assembly, removal/installation and replacement of oil pan and drain plug, and replacement of torque converter Assembly, perform operations of [Filling of automatic transmission fluid] to [Adjustment of automatic transmission fluid amount].
  • When a small amount of fluid filling is required for operations including replacement of extension housing rear oil seal and repair of oil bleeds, perform only [Adjustment of automatic transmission fluid amount].
  1. Filling of automatic transmission fluid
    CAUTION:
    • Perform procedures when the automatic transmission fluid is sufficiently cool.
    • Be sure to fill the automatic transmission fluid after switching to oil amount adjustment mode.
    • Slowly add the fluid. Adding the fluid rapidly can cause the fluid to hit internal parts and splash around resulting in fluid flowing out of the refill hole.
    1. Lift up the vehicle and maintain in a horizontal position.
    2. Remove the under cover front AL. (Refer to REMOVAL )
    3. Remove the under cover COMPL T/M. (Refer to REMOVAL )
    4. Remove the refill plug and the O-ring.
    5. Use a socket hexagon wrench to remove the overflow plug.
      Fig 2: Locating Refill Plug And O-Ring
      G10214224Courtesy of SUBARU OF AMERICA, INC.
    6. Add fluid through the refill hole until the fluid flows out of the overflow tube.
      CAUTION: Slowly add the fluid. Adding the fluid rapidly can cause the fluid to hit internal parts and splash around resulting in fluid flowing out of the refill hole.
      Fig 3: Adding Fluid Through Refill Hole Until Fluid Flows Out Of Overflow Tube
      G10214225Courtesy of SUBARU OF AMERICA, INC.
    7. Wait until the fluid stops flowing and drops.
    8. Use a socket hexagon wrench to temporarily tighten the overflow plug.
      NOTE: Perform the replacement of the gasket and final tightening after adjusting the fluid amount.
    9. Fill the specified amount of fluid from the refill hole.

      Specified amount

      OIL PAN AND DRAIN PLUG SPECIFICATION

      Related operation Filling amount (reference)
      Removal/installation of oil pan and drain plug 2.0 L {2.1 US qt, 1.8 lmp qt}
      Installation/removal of transmission valve body Assembly 3.0 L {3.2 US qt, 2.6 lmp qt}
      Replacement of torque converter 4.5 L {4.8 US qt, 4.0 lmp qt}
      NOTE: If fluid flows out from the refill hole and you cannot fill with the specified amount when adding fluid through the refill hole, perform the following procedures to circulate fluid until it reaches the oil passages in the transmission and inside the torque converter.
      1. Temporarily tighten the refill plug.
        NOTE: Perform the replacement of the O-ring and final tightening after adjusting the fluid amount.
      2. Start the engine.
      3. Move the select lever from P position to M position slowly, and shift it to P position again.
      4. Idle the engine for approx. 30 seconds.
      5. Turn the ignition switch to OFF.
  2. Automatic transmission fluid amount adjustment
    CAUTION:
    • Be sure to adjust the amount of automatic transmission fluid when the fluid temperature is appropriate for the oil amount adjustment.
    • Perform procedures when the automatic transmission fluid is sufficiently cool.
    1. When using SSM3
      1. Connect SSM3 to the data link connector.
      2. Turn the ignition to ON. (Engine OFF)
      3. Turn off all parts effecting an electrical load such as air conditioner, audio and lights.
      4. Select [Work Support] on the [Transmission Diagnosis] screen of SSM3. Select [ATF level adjustment mode] on the [Work Support] screen of SSM3.
        NOTE: If the ATF temperature is 42°C (107.6°F) or more, perform the procedure again after lowering the ATF temperature by leaving the vehicle in a cool place.
      5. While checking the ATF temperature on the screen of SSM3, raise the oil temperature by idling.
      6. Adjust the oil amount as soon as the oil reaches the appropriate temperature for the oil amount adjustment of 42°C (107.6°F).
        CAUTION: Be sure to adjust ATF (tightening the overflow plug) when the oil temperature is proper.
        Lower than proper oil temperature Proper oil temperature Higher than proper oil temperature
        43°C
        Less than (109.4°F)        		 43°C to 47°C
        (109.4°F to 116.6°F)        		 48°C
        (118.4°F) or higher
    2. When TC terminal is shorted
      1. Short No. 13 and No. 4 of the data link connector.
        Fig 4: Data Link Connector Terminal Identification
        G10214226Courtesy of SUBARU OF AMERICA, INC.
      2. Start the engine.
      3. Turn off all parts effecting an electrical load such as air conditioner, audio and lights.
      4. Operate the select lever in P→R→N→D→M→D→N→R→P to circulate ATF in the transmission.
      5. Perform N ↔ D operation within 1.5 seconds for 6 seconds or more consecutively to switch to the oil temperature adjustment mode. When the oil temperature adjustment mode is activated, the up-shift permission indicator light [up triangle]/down-shift permission indicator light [down triangle] in the combination meter illuminate for 2 seconds and go off simultaneously regardless of the range position.
        6. Fig 5: Locating Up And Down Triangles On Combination Meter
        G08554356Courtesy of SUBARU OF AMERICA, INC.
      6. After switching to oil temperature adjustment mode, shift the select lever to "P" position.
      7. Release short in No. 13 and No. 4 of the data link connector.
      8. Check the up-shift permission indicator light [up triangle]/down-shift permission indicator light [down triangle] status.
        CAUTION: When only the indicator light [up triangle] turns on or both [up triangle] and [down triangle] simultaneously turn on, stop the operation and leave the vehicle in a cool place to lower the ATF temperature. Wait until only the down-shift permission indicator light [down triangle] turns on when oil amount adjustment mode is activated, and then repeat the procedure from step (a).
      9. Adjust the oil amount as soon as the oil reaches the appropriate temperature for the oil amount adjustment.
        CAUTION: Be sure to adjust ATF when the oil temperature is proper.
        Lower than proper oil temperature Proper oil temperature Higher than proper oil temperature
        Only indicator light [down triangle] turns on. Indicator lights [up triangle] and [down triangle] turn on simultaneously. Only indicator light [up triangle] turns on.
    3. Use a socket hexagon to remove the overflow plug, and check the oil amount when the temperature is appropriate for oil amount check.
      • The oil amount is proper when fluid flows out of the overflow tube and then the flow of the fluid is thin.
      • If fluid does not flow out of the overflow tube, fill through the refill hole until fluid flows out of the overflow tube. The oil amount is proper when the flow of the fluid is thin.
        Fig 6: Filling Through Refill Hole Until Fluid Flows Out Of Overflow Tube
        G10214228Courtesy of SUBARU OF AMERICA, INC.
    4. Use a socket hexagon to install the overflow plug via a new gasket.

      Standard value: T=20N.m {204kgf.cm} {14.8ft.lbf}

      CAUTION: Be sure to tighten the overflow plug when ATF temperature is 43°C to 47°C (109.4°F to 116.6°F) (when the indicator lights [up triangle] and [down triangle] turn on simultaneously).
      1. Tighten the refill plug via a new O-ring.
        Fig 7: Tightening Refill Plug With O-Ring
        G10214229Courtesy of SUBARU OF AMERICA, INC.

        Standard value: T=39N.m {400kgf.cm} {28.8ft.lbf}

      2. Install the under cover COMPL T/M. (Refer to INSTALLATION )
      3. Install the under cover front AL. (Refer to INSTALLATION )
      4. Lower the vehicle.
      5. Turn the ignition switch to OFF.
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