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Component Tests and General Diagnostics|Page 683 > < Component Tests and General Diagnostics|Page 681
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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.

Wave pattern characteristics

Component Tests and General Diagnostics|Page 683 > < Component Tests and General Diagnostics|Page 681