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Examples of abnormal wave patterns

Example

Cause of problem

Sensor interface malfunction

Wave pattern characteristics

en-
Rectangularwavepattern is output even when the
gine is not started_

Example 2

Cause of problem
Damaged rectifier or vortex generation column

Wave pattern characteristics

Unstable wave pattern with non-uniform frequency. How-
everwhenanignition leak occurs during acceleration
thewave patternwillbe distorted temporarily,evenif
the air flow sensor is normal:

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