On-Vehicle Inspection

INSPECT THROTTLE BODY ASSEMBLY
1. Listen to the throttle control motor operating sounds.
  1. Turn the ignition switch ON.
  2. When pressing the accelerator pedal, listen to the running sound of the motor. Make sure no friction noises come from the motor.
    If friction noises occur, check the throttle body, wire harness and ECM.
2. Check the throttle position sensor.
  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch ON.
  3. Turn the tester ON.
  4. Start the engine and warm it up.
  5. Select the following menu items: Powertrain / Engine and ECT / Data List / Throttle Position.
  6. Depress the accelerator pedal. When the throttle valve is fully open, check that the Throttle Position value is within the specification.
    Standard: 60% or more
    
    NOTE: When checking the standard throttle valve opening percentage, the transmission should be in the neutral position.
    
    If the result is not as specified, check the throttle body, wire harness and ECM.