Throttle Body On-Vehicle Inspection

Engine Hybrid System. Corolla. Zre142 Aze141
2Az-Fe Engine Control. Corolla. Zre142 Aze141

  1. INSPECT THROTTLE BODY ASSEMBLY

Throttle Body -- On-Vehicle Inspection



1. INSPECT THROTTLE BODY ASSEMBLY

  1. Check the throttle control motor operating sound.

    1. Turn the ignition switch to ON.

    2. When depressing the accelerator pedal, check the operating sound of the motor. Make sure that no friction noises are emitted from the motor.
      If any friction noise exists, replace the throttle body assembly.

  1. Check the throttle position sensor.

    1. Connect the Techstream to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the Techstream on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Pos. Sensor Output.

    5. When the throttle valve is fully opened, check that the value of "Throttle Position" is within the specification.

      Standard Throttle Valve Opening Percentage:
      Tester Display
      		Standard Value
      Throttle Pos. Sensor Output
      		60% or more
      If the percentage is less than 60%, replace the throttle body assembly.
      NOTICE:
      1. When checking the standard throttle valve opening percentage, the shift lever should be in N.
      2. Fully depress the accelerator pedal.