Lexus IS250 · Service Manual ENGINE

ON-VEHICLE INSPECTION

Inspection


CHECK THROTTLE BODY

  1. A105824
    Check the throttle control motor operating sounds.

    1. Turn the engine switch on (IG).

    2. When pressing the accelerator pedal, check the operating sound of the running motor. Make sure that no friction noises emit from the motor.
      If friction noise exists, replace the throttle body.

  1. Check the throttle position sensor.

    1. C110200E06
      Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester main switch ON.

    4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / THROTTLE POS AND THROTTLE POS #2.

    5. Depress the accelerator pedal. When the throttle valve is fully opened, check that the value of the "Throttle Sensor Position" is within the specification.

      Standard throttle valve opening percentage:
      60% or more

      NOTICE:
      When checking the standard throttle valve opening percentage, the shift lever should be in the N position.

      If the percentage is less than 60%, replace the throttle body.

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