Lancer L4-2.4L (4B12) (2009)
Wave Pattern Observation Points
1. Check that cycle time becomes shorter when the engine speed increased.
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 chain.
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Abnormality in sensor disc.
Wave pattern characteristics
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Wave pattern is displaced to the left or right.