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Home >> Subaru >> 2020 >> BRZ tS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transaxle (Diagnostics)) >> Automatic Transmission System >> DTC P2762: Torque Converter Clutch Pressure Control Solenoid Control Circuit Range/Performance; DTC P2763: Torque Converter Clutch Pressure Control Solenoid Control Circuit High; DTC P2764: Torque Converter Clutch Pressure Control Solenoid Control Circuit Low >> Inspection steps

Inspection steps

WARNING: This page is about a different variant/trim than selected.
  1. Transmission wire unit check (lock-up control solenoid (SLU))
    1. Disconnect the connector L4 of the transmission wire.
    2. Measure the resistance between the terminals.
      STANDARD VALUE RESISTANCE SPECIFICATION

      Inspection terminals Inspection conditions Standard value
      L4-12 (SLU+) - L4-4 (SLU-) 20°C 5.0 to 5.6 Ω
      L4-12 (SLU+) - chassis ground Always 10 k Ω or more
      L4-4 (SLU-) - chassis ground Always 10 k Ω or more
    3. Connect the connector L4 of the transmission wire.

    NG: Go to Step  4.

    OK: Go to next step

  2. Check wiring harness and connector (transmission wire - transmission control computer)
    1. Disconnect the connector A18 of the transmission control computer ASSY.
    2. Measure the resistance between the terminals.
      STANDARD VALUE RESISTANCE SPECIFICATION

      Inspection terminals Inspection conditions Standard value
      A18-13 (SLU+) - A18-1 (SLU-) 20°C 5.0 to 5.6Ω
      A18-13 (SLU+) - chassis ground Always 10 k Ω or more
      A18-1 (SLU-) - chassis ground Always 10 k Ω or more
    3. Connect the connector A18 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  )

  4. Check of lock-up control solenoid (SLU) unit
    1. Check the lock-up control solenoid (SLU) unit. (Refer to UNIT INSPECTION )

    NG: Repair or replacement of transmission valve body ASSY (refer to REMOVAL )

    OK: Go to next step

    Repair or replacement of transmission wire (refer to TRANSMISSION WIRE )