LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> LX 570 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - System Descriptions And Testing, On-Vehicle Inspection, Removal And Installation >> Throttle Body >> On-Vehicle Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

On-Vehicle Inspection

  1. CHECK THROTTLE BODY ASSEMBLY 
    1. Check the throttle control motor operating sounds.
      1. Turn the engine switch on (IG).
      2. When depressing the accelerator pedal, check the operating sound of the running motor. Make sure that no friction noises are emitted from the motor.

      If friction noise exists, replace the throttle body assembly.

    2. Check the throttle position sensor.
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream main switch on.
      4. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Throttle Sensor Position.
      5. 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 assembly.

scientia non olet · About LEMON Manuals