LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2018 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle (Diagnostics) >> Automatic Transmission System >> Sports Sequential Shift Switch System >> Inspection steps
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection steps

  1. Check of transmission control switch unit
    1. Disconnect the connector D28 of the transmission control switch.
    2. Check the transmission control switch unit. (Refer to UNIT INSPECTION )

    NG: Replacement of transmission control switch (refer to SELECT LEVER )

    OK: Go to next step

  2. Check wiring harness and connector (transmission control switch - transmission control computer)
    1. Disconnect the connector A19 of the transmission control computer ASSY.
    2. Measure the resistance of the vehicle side connector. (For terminal arrangement, refer to ECM TERMINAL ARRANGEMENT  .)
      STANDARD VALUE RESISTANCE SPECIFICATION

      Inspection terminals Inspection conditions Standard value
      A19-2 (SFTU) - chassis ground When select lever is in M position and shifted to "+" Less than 1 Ω
      A19-1 (SFTD) - chassis ground When select lever is in M position and shifted to "-" Less than 1 Ω
      A19-2 (SFTU) - chassis ground Neutral position (M position) 10 k Ω or more
      A19-1 (SFTD) - chassis ground Neutral position (M position) 10 k Ω or more
    3. Connect the connector A19 of the transmission control computer ASSY.

    NG: Repair or replacement of wiring harness or connector

    OK: Go to next step

  3. Replacement of transmission control computer ASSY
    1. Replace the transmission control computer ASSY. (Refer to TRANSMISSION CONTROL COMPUTER ASSY )

    AT unit correction (refer to WORK SUPPORT  )