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1.Start up the engine and
run at idle speed.
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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.
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3.If the operating sound is
not heard, check the drive circuit of the throttle valve
control servo.
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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)
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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.
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3.If the resistance deviates from outside the
standard value, replace the throttle body
assembly.
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