On-Vehicle Inspection

INSPECTION THROTTLE BODY
1. Inspect the throttle control motor for operating sounds.
  1. Turn the engine switch on (IG).
  2. When turning the accelerator pedal position sensor lever, check for running sounds of the motor. The motor should be running smoothly without friction sounds.
    If operation is not as specified, check the throttle control motor, wiring and ECM (See INSPECTION ).
    
    Fig 1: Inspecting Throttle Control Motor For Operating Sounds
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspect the throttle position sensor.
  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG).
  3. Check that the MIL is off.
  4. Turn the tester ON.
  5. Enter the following menus: Powertrain / Engine / Data List / Throttle Position.
  6. Depress the accelerator pedal. When the throttle valve is fully opened, check that the value of Throttle Position is within the specification.
    Standard throttle valve opening percentage: 60 % or more
    
    If operation is not as specified, check the throttle position sensor, wiring and ECM (See INSPECTION ).