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Home >> Lexus >> 2010 >> IS 350 >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Automatic Transmission (A760H) (Diagnostic Codes (P0500-U0100) & Circuit Tests)) >> Automatic Transmission System >> DTC P0761: Shift Solenoid "C" Performance (Shift Solenoid Valve S3) >> Inspection Procedure >> Notes

Inspection Procedure: Notes

WARNING: This page is about a different car, the 2010 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Perform the universal trip to clear permanent DTCs. Refer to DTC CHECK / CLEAR .

  1. ACTIVE TEST 

    HINT: 

    Using the Techstream to perform Active Test 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 Test early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Test.

    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) position.
    5. Turn the Techstream on.
    6. Select the item "Powertrain / ECT / Active Test".
    7. According to the display on tester, perform the "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 .

      Item Test Details Diagnostic Note
      Control the Shift Position [Test Details]
      Operate the shift solenoid valve and set the each shift position by yourself.
      [Vehicle Condition]
      • IDL: ON (4th, 5th and 6th)
      • Less than 50 km/h (31 mph)

      [Others]
      • Press "→" button: Shift up
      • Press "←" button: Shift down
      		 Possible to check the operation of the shift solenoid valves.

      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-shiftings must be performed with the accelerator pedal released.
      • The 6th to 5th and 5th to 4th down-shiftings 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 S3 is turned on/off normally when the shift lever is in the D position:
        ECM command gearshift 1st 2nd 3rd 4th 5th 6th
        Shift solenoid valve S3 ON ON ON OFF OFF OFF
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