warning When checking the throttle valve operation, never insert fingers into the throttle valve. The extremely strong power of the throttle valve motor might trap and injure fingers.
1.Remove the air intake hose from the throttle body assembly.
2.Turn the ignition switch to the ON position.
3.Verify that the throttle valve opens or closes according to the accelerator pedal operated.


warning When touching the throttle valve, surely shut off the driving circuits of the throttle valve. In the event that the throttle valve is operated, a finger might be injured as the result of being caught by the throttle valve.

1.Disconnect the electronic-controlled throttle valve connector.
2.Measure the resistance between terminal No. 1 and No. 2 of the electronic-controlled throttle valve connector.
Standard value: 0.3 - 80 Ω (at 20°C)
note If the measured resistance deviates from the standard value, fully open the throttle valve with your finger more than five times, then check the result again.
If the throttle valve control serve is not used for an extended period of time, the resistance may be increased as a result of internal forming of oxide film. Therefore, it means that the oxide film can be removed through a self cleaning capability of the throttle valve control servo, if forcibly moved.
3.If the resistance deviates from the standard value, replace the throttle body assembly.