THROTTLE VALVE CONTROL SERVO CHECK


OPERATION CHECK
1.Start up the engine and run at idle speed.
2.When turning the ignition switch to the "LOCK" (OFF) position and stopping the engine, check that the operating sound of the throttle valve control servo is heard from the throttle body: the short "wheeen" sound is heard.
3.If the operating sound is not heard, check the drive circuit of the throttle valve control servo.
note If the circuit is normal and the operating sound is not heard, it could possibly be caused by the failed throttle body assembly.

CHECK THE COIL RESISTANCE

1.Disconnect the throttle body assembly connector.
2.Measure the resistance between terminal No. 5 and No. 6.
Standard value: 0.3 - 100 Ω (at 20 °C)
note If the measured resistance deviates from the standard value, fully close 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 outside the standard value, replace the throttle body assembly.