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Home >> Lexus >> 2017 >> RC 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 92 (Automatic Transmission System (2GR-FKS,A760H) - Diagnostic Codes (2 Of 3)) >> AUTOMATIC TRANSMISSION SYSTEM (for 2GR-FKS) >> DTC P0755-7F: Shift Solenoid "B" Actuator Stuck Off [11/2017 - 11/2019] >> Caution / Notice / Hint

Caution / Notice / Hint

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NOTE:
  1. ACTIVE TEST 

    HINT: 

    Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

    1. Warm up the engine.
    2. Turn the engine switch off.
    3. Connect the Techstream to the DLC3.
    4. Turn the engine switch on (IG).
    5. Turn the Techstream on.
    6. Enter the following menus: Powertrain / Transmission / Active Test.

      HINT: 

      While driving, the shift position can be forcibly changed with the Techstream. Comparing the shift position commanded by the Active Test with the actual shift position enables you to confirm the problem.

      Refer to FAIL-SAFE CHART [11/2017 - ]

    7. According to the display on the Techstream, perform the "Active Test".

      Powertrain > Transmission > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Control the Shift Position Operates the shift solenoid valves to allow gears to be selected manually 1st/2nd/3rd/4th/5th/6th
      Start/Stop
      Possible to check operation of the shift solenoid valves.

      [Vehicle Condition] 

      1. Vehicle speed: 50 km/h (31 mph) or less

      Powertrain > Transmission > Active Test 

      Tester Display
      Control the Shift Position

      HINT: 

      • This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less.
      • The 4th to 5th and 5th to 6th up-shifts must be performed with the accelerator pedal released.
      • The 6th to 5th and 5th to 4th down-shifts must be performed with the accelerator pedal released.
      • Do not operate the accelerator pedal for at least 2 seconds after shifting and do not shift successively.
      • The shift position commanded by the ECM is shown in the Data List (Shift Status) display on the Techstream.
      • The shift solenoid valve S2 is turned on/off normally with the shift lever in D:
        ECM command gearshift 1st 2nd 3rd 4th 5th 6th
        Shift solenoid valve S2 ON ON OFF OFF OFF ON