LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2009 >> GS 450h >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (Service Information) >> Throttle Body >> On-Vehicle Inspection >> On-Vehicle Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

On-Vehicle Inspection

  1. CHECK THROTTLE BODY 
    1. Check the throttle control motor operating sounds.
      1. Connect the Techstream to the DLC3.
      2. Turn the power switch ON (IG).
      3. Push the Techstream main switch ON.
      4. Enter the following menus: Powertrain / Engine / Active Test / Control the ETCS Open Slow Speed or Control the ETCS Close Slow Speed or Control the ETCS Open Fast Speed or Control the ETCS Close Fast Speed.
        5. Fig 1: Checking Throttle Control Motor Operating Sounds
        GTY104621Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. 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.

    2. Check the throttle position sensor.
      1. Connect the Techstream to the DLC3.
      2. Turn the power switch ON (IG).
      3. Push the Techstream main switch ON.
      4. Enter the following menus: Powertrain / Engine / Data List / Control the ETCS Open Slow Speed or Control the ETCS Close Slow Speed or Control the ETCS Open Fast Speed or Control the ETCS Close Fast Speed.

        Specified Condition

        Tester Display Specified Condition
        Throttle Position Value varies according to Active Test
        Throttle Sensor Position
        Throttle Position No. 1
        Throttle Position No. 2

        If the result is not as specified, replace the throttle body.

scientia non olet · About LEMON Manuals