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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 77 (Automatic Transaxle System (K120 / K121) - Service Information (5 Of 5)) >> K121 Valve Body Assembly >> Inspection [03/2023 - ] >> Procedure

Inspection [03/2023 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. INSPECT TRANSMISSION VALVE BODY ASSEMBLY 
    1. Inspect Shift Solenoid Valve SL1:
      1. Measure the resistance according to the value(s) in the table below.
        GTY855097Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Component without harness connected
        (Shift Solenoid Valve SL1)

        Standard Resistance

        Tester Connection Condition Specified Condition
        1 - 2 20°C (68°F) 5.0 to 5.6 Ω

        If the result is not as specified, replace the transmission valve body assembly.

      2. Connect a positive (+) lead from the battery with a 21 W bulb to terminal 1 and a negative (-) lead to terminal 2 of the shift solenoid valve SL1 connector. Check that the valve moves and makes an operating sound.
        NOTE:

        When using battery voltage during the inspection, do not bring the positive (+) and negative (-) tester probes too close to each other as a short circuit may occur.

        OK

        The shift solenoid valve SL1 moves and makes an operating sound.

        If the result is not as specified, replace the transmission valve body assembly.

    2. Inspect Shift Solenoid Valve SL2:

      HINT: 

      Refer to Inspect Shift Solenoid Valve SL1.

    3. Inspect Shift Solenoid Valve SLU:

      HINT: 

      Refer to Inspect Shift Solenoid Valve SL1.

    4. Inspect Shift Solenoid Valve SLP:

      HINT: 

      Refer to Inspect Shift Solenoid Valve SL1.

    5. Inspect Shift Solenoid Valve SLS:

      HINT: 

      Refer to Inspect Shift Solenoid Valve SL1.

    6. Inspect Shift Solenoid Valve SC1:
      1. Measure the resistance according to the value(s) in the table below.
        GTY1180404Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Component without harness connected
        (Shift Solenoid Valve SC1)

        Standard Resistance

        Tester Connection Condition Specified Condition
        Shift solenoid valve SC1 connector terminal - Shift solenoid valve SC1 body 20°C (68°F) 11 to 15 Ω

        If the result is not as specified, replace the transmission valve body assembly.

      2. Connect a positive (+) lead from the battery to the terminal of the shift solenoid valve SC1 connector and a negative (-) lead to the shift solenoid valve SC1 body, and check that the shift solenoid valve SC1 moves and makes an operating sound.
        NOTE:

        When using battery voltage during the inspection, do not bring the positive (+) and negative (-) tester probes too close to each other as a short circuit may occur.

        OK

        The shift solenoid valve SC1 moves and makes an operating sound.

        If the result is not as specified, replace the transmission valve body assembly.

    7. Inspect Shift Solenoid Valve SC2:

      HINT: 

      Refer to Inspect Shift Solenoid Valve SC1.

    8. Inspect Shift Solenoid Valve SC3:

      HINT: 

      Refer to Inspect Shift Solenoid Valve SC1.

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