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Secondary Speed Sensor: Inspection

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  1. Check for oil leaks.
  2. Check the output waveform and output voltage of the secondary speed sensor.
    1. Disconnect the ground terminal from battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
    2. Disconnect the connector from TCM. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transmission Control Module (TCM)>REMOVAL .
    3. Set the ST between TCM and connector. Ref. to TRANSMISSION (DIAGNOSTICS)>General Description>CAUTION .

      Special tool: 

      CHECK BOARD (18460AA040)

    4. Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
    5. Connect the probe of oscilloscope to ST.
      G13225684Courtesy of SUBARU OF AMERICA, INC.
      Terminal No. Probe
      13 +
      26 -
    6. Start the engine and warm up completely.
    7. 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)>Transmission Control Module (TCM) I/O Signal>SENSOR .
  3. After inspection, install the related parts in the reverse order of removal.
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