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Component Tests and General Diagnostics|Page 3213 > < Component Tests and General Diagnostics|Page 3211
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Standard Wave Pattern

Standard Wave Pattern

Standard Wave Pattern

Wave Pattern Observation Points

1. Check that the standard wave pattern appears when the EGR valve is operating.

Point A: Presence or absence of induced electromotive force from the motor turning. (Refer to abnormal wave pattern.)

Point B: Height of coil back electromotive force

Examples of Abnormal Wave Patterns

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