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Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - System & Component Testing, R & I >> Throttle Body >> On-Vehicle Inspection
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On-Vehicle Inspection

  1. CHECK THROTTLE BODY ASSEMBLY 
    1. Check the throttle position sensor.
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream ON.
      4. Enter the following menus. Powertrain / Engine / Data List / All Data / Throttle Sensor Position
      5. Start the engine
      6. Firmly depress the brake pedal with your left foot, and move the shift lever to N.
      7. Depress the accelerator pedal. When the throttle valve is fully opened, check that the value of "Throttle Sensor Position" is within the specification.

        Standard throttle valve opening percentage: 

        60% or more 

        HINT.

        When checking the standard throttle valve opening percentage, the shift lever should be in N

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