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Home >> Mitsubishi >> 2005 >> Lancer Evolution >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Charging System -- Except Evolution) >> On-Vehicle Service >> Wave Pattern Check Using An Oscilloscope >> Standard Waveform
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Standard Waveform

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OBSERVATION CONDITIONS

FUNCTION SPECIAL PATTERNS
Pattern height Variable
Variable knob Adjust while viewing the wave pattern
Pattern selector Raster
Engine revolutions Curb idle speed
Fig 1: Identifying Standard Waveform
G02463940Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
NOTE: The voltage waveform of the generator "B" terminal can undulate as shown at left. This waveform is produced when the regulator operates according to fluctuations in the generator load (current), and is normal for the generator.
If the ripple height is abnormally high (approximately 2V or more during idling), the wires between the generator "B" terminal and the battery have broken due to fuse blowing, etc. The generator is usually operating properly.
Fig 2: Voltage Waveform
G02463941Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.