Lancer L4-2.0L (4B11) (2008)
Wave Pattern Observation Points
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Verify that, toward the engine speed of 2,500 r/min, time difference T from when the crankshaft position sensor output wave falls to when the
exhaust camshaft position sensor output wave falls becomes less.
Examples of Abnormal Wave Patterns
Example 1
Cause of problem
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Sensor interface malfunction.
Wave pattern characteristics
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Rectangular wave pattern is output even when the engine is not started.
Example 2
Cause of problem
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Loose timing belt.
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Abnormality in sensor disc.