THROTTLE BODY ON-VEHICLE INSPECTION

PROCEDURE

1. CHECK THROTTLE BODY ASSEMBLY

   
   

   1. Check for throttle control motor operating sounds.

      
      

      1. Turn the ignition switch to ON.

      2. When depressing the accelerator pedal, check for operating sounds of the motor. Make sure that no friction noise is emitted from the motor.

         If any friction noise exists, replace the throttle body assembly.

   2. Check the throttle position sensor.

      
      

      1. Connect the GTS to the DLC3.

      2. Turn the ignition switch to ON and turn the GTS on.

      3. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Sensor Position.

         
         Powertrain > Engine and ECT > Data List

         Tester Display
         Throttle Sensor Position

      4. 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

         Tech Tips

         When checking the standard throttle valve opening percentage, the shift lever should be in neutral (for Manual Transaxle) or N (for CVT).

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