Throttle Body On-Vehicle Inspection

Engine. Lexus Is250, Is220D. Gse20 Ale20
4Gr-Fse Engine Control System. Lexus Is250, Is220D. Gse20 Ale20

  1. CHECK THROTTLE BODY

Throttle Body -- On-Vehicle Inspection



1. CHECK THROTTLE BODY


    Lexus Is250, Is220D. Gse20 Ale20

  1. 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.



      Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Throttle Body On-Vehicle Inspection

    1. 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.