Pajero II Workshop Manual 1991 · FUEL · страница 177 из 339 · Открыть оригинал PDF ↗

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Wave pattern observation points

(Point): Conditionofwave pattern build-upandmaximumvoltage (Referto abnormalwave pattern
examplesand 2.1

Condition ofwavepattern build-up and maximum voltage
Rise to the right to approximately 4.5V from around 2V.
Becomesrectangular waveat approx2v

Becomesrectangular wave at power voltage

Probable cause
Normal
Broken wire in ignition primary circuit
Malfunctionof thepower transistor

Examples of abnormal wave patterns

Example

Wave pattern during engine cranking

Cause of problem

Broken wire in ignition primary circuit
Wave pattern characteristics

Top-right part ofthe build-up sectioncannotbeseen,and
voltage value is approximately 2V too low

Example2

Wave pattern during engine cranking
Cause of problem

Malfunction in power transistor

Wave pattern characteristics

Power voltage results when the power transistor iS ON

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