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Question

Why is power supply ripple analysis important in ECU diagnostics?

Answer

Excessive ripple can cause erratic ECU behavior and sensor errors.

Explain

Stable voltage supply is critical for ECU and sensor operation. CHEPQ oscilloscopes measure power line ripple and noise levels, identifying power quality issues caused by alternator faults or grounding problems, which can lead to misfires, sensor malfunctions, and false diagnostics.

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