On-Vehicle Inspection

INSPECT THROTTLE BODY ASSEMBLY

a. Listen to the throttle control motor operating sounds.
1. Turn the ignition switch to 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 exist, check the throttle body, wire harness and ECM.




b. Check the throttle position sensor.
1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the hand-held tester ON.
4. Select the menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / THROTTLE POS.
5. Depress the accelerator pedal. When the throttle valve is fully opened, then check that the value of the "THROTTLE POS" 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.