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Home >> Subaru >> 2018 >> Outback 2.5i >> Repair and Diagnosis >> Transmission >> Automatic Trans >> CVT Transaxle (Tr580) >> Inhibitor Switch >> Inspection

Inhibitor Switch: Inspection

When the driving condition or starter motor operation is improper, first check the shift linkage for improper operation. If the shift linkage is functioning properly, check the inhibitor switch.

  1. Disconnect the ground cable from battery. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
    NOTE: For model with battery sensor, disconnect the ground terminal from battery sensor.
  2. Remove the clip (A), and loosen the clamps (B) and (C).
    G11565902Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the air intake boot from the throttle body, and move it to the left side wheel apron.
    G11565903Courtesy of SUBARU OF AMERICA, INC.
  4. Disconnect the transmission radio ground terminal and transmission harness connector, and remove the harness clip.
    G12407223Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the transmission case cover.
    G11572607Courtesy of SUBARU OF AMERICA, INC.
  6. Move the lock lever in the arrow direction while pressing the lock button, and disconnect the connector.
    G12407225Courtesy of SUBARU OF AMERICA, INC.
  7. Attach the ST to the bulkhead harness. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>General Description>CAUTION .

    ST 18460AA040 CHECK BOARD 

  8. Check for continuity in inhibitor switch circuit by shifting the select lever in "P", "R", "N" and "D" respectively.
    NOTE:
    • Check that there is no continuity in the starter circuit when the select lever is in the "R" and "D" ranges.
    • When inhibitor switch is normal, check there is no poor contact in vehicle side connector and no open circuit in harness.
    Signal sent to TCM Range Terminal No. Standard
    P 38 - 42 Less than 1 Ω
    R 37 - 42
    N 36 - 42
    D 35 - 42
    G12407226Courtesy of SUBARU OF AMERICA, INC.
      Range Terminal No. Standard
    Starter circuit P/N 1 - 5 Less than 1 Ω
    Back-up light circuit R 2 - 3
    G10274977Courtesy of SUBARU OF AMERICA, INC.
  9. Check that there is continuity at equal points when the select lever is moved 1.5° in both directions from the "N" range.

    If there is continuity in only one direction or in other points, adjust the inhibitor switch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Inhibitor Switch>ADJUSTMENT .

    G12407228Courtesy of SUBARU OF AMERICA, INC.
  10. Repeat the above inspection in other gear ranges. If there is fault, adjust the inhibitor switch and select cable. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Inhibitor Switch>ADJUSTMENT . Ref. to CONTROL SYSTEMS>Select Cable>ADJUSTMENT