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2.2 Fault diagnosis
No flashover in spark plug
Abnormal circumstance Cause of badness（confirm in order from 1）
ignition
coil
high voltage too low
The interior resistance is too low and test it with a
designated tester.
The cranking speed is too low.
The tester is disturbed（if the voltage measured for several
times is above standard, then the value is normal）.
poor contact of ignition system wire
bad act of the ignition coil
bad act of the charge coil（peak voltage test)
no high voltage，off-and-on
high voltage
connecting error in tester
bad act of the main switch
poor contact of CDI joint
short circuit or poor contact of CDI ground wire
bad act of charge coil（peak voltage test）
bad act of trigger （peak voltage test）.
bad act of connector for high voltage wire
bad act of CDI group（when item- is abnormal or when
there is no spark in the sparkplug）
side
voltage
Normal high voltage, no spark
bad act of spark plug or power leak in secondary coil
bad act of ignition coil
no high voltage
The interior resistance is too low. Test it with a designated
tester.
The cranking speed is too low.
The tester is disturbed（if the voltage measured for several
times is above standard, then the value is normal）.
bad act of the charge coil（no abnormality in Item -）
charge coil
no high voltage，off-and-on
high voltage
bad act of the ignition coil
bad act of the charge coil
high voltage too low
The interior resistance is too low and tests it with a
designated tester.
The cranking speed is too low.
The tester is disturbed（if the voltage measured for several
times is above standard, then the value is normal）.
bad act of the charge coil（no abnormality in Item -）
trigger
no high voltage，off-and-on
high voltage
bad act of the ignition coil
bad act of the trigger
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