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Home >> Subaru >> 2021 >> Crosstrek Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (CVT Transaxle (Tr580 CROSSTREK)) >> Turbine Speed Sensor >> Inspection

Turbine Speed Sensor: Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Check for oil leaks.
  2. Check the output waveform and output voltage of the turbine speed sensor.
    1. Disconnect the ground terminal from battery sensor. Ref. to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>BATTERY .
    2. Remove the clip from the air intake boot, and loosen the clamp.
      G11252776Courtesy of SUBARU OF AMERICA, INC.
    3. Remove the air intake boot, and place it aside so that it does not interfere with the work.
      CAUTION:

      Be careful not to pull out the PCV hose. 

      G11252777Courtesy of SUBARU OF AMERICA, INC.
    4. Disconnect the ground cord.
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    5. Remove the pitching stopper. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 CROSSTREK)>TRANSMISSION MOUNTING SYSTEM>REMOVAL>PITCHING STOPPER .
    6. Remove the transmission case cover (front).
      G13603171Courtesy of SUBARU OF AMERICA, INC.
    7. Move the lock lever in the arrow direction while pressing the lock button (A), and disconnect the connector.
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    8. Set the ST between the TCM and transmission harness. Ref. to TRANSMISSION (DIAGNOSTICS) (CROSSTREK MODEL)>GENERAL DESCRIPTION>CAUTION .

      Special tool: 

      CHECK BOARD (18460AA040)

    9. Install the air intake boot. Ref. to INTAKE (INDUCTION) (H4DO (EXCEPT FOR HEV))>AIR INTAKE BOOT>INSTALLATION .
    10. Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>BATTERY .
    11. Connect the probe of oscilloscope to ST (CHECK BOARD).
      G13225684Courtesy of SUBARU OF AMERICA, INC.
      Terminal No. Probe
      12 +
      42 -
    12. Start the engine and warm up completely.
    13. Check the output waveform and output voltage with engine idling.
    NOTE:

    For the output waveform and output voltage, refer to "TRANSMISSION (DIAGNOSTICS)". Ref. to  TRANSMISSION (DIAGNOSTICS) (CROSSTREK MODEL)>TRANSMISSION CONTROL MODULE (TCM) I/O SIGNAL>WAVEFORM>SENSOR  . 

  3. After inspection, install the related parts in the reverse order of removal.
NOTE:
  • When connecting the connector to the TCM, move the lock lever and confirm that a clicking sound is heard. 
  • Insert the transmission case cover (front) between transmission case cover (rear) and transmission body. 
  • When inserting, be careful that the insulator inside transmission case cover is not turned over. 
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Tightening torque: 

7 N.m (0.7 kgf-m, 5.2 ft-lb)

G13603171Courtesy of SUBARU OF AMERICA, INC.

Tightening torque: 

32.3 N.m (3.3 kgf-m, 23.8 ft-lb)

G13603170Courtesy of SUBARU OF AMERICA, INC.