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Home >> Mitsubishi >> 2010 >> Lancer ES, Standard >> Repair and Diagnosis (Single Page) >> Electrical >> Charging Systems >> Charging System -- Lancer >> On-Vehicle Service >> Wave Pattern Check Using An Oscilloscope >> Standard Waveform

Standard Waveform

OBSERVATION CONDITIONS CHART

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: Generator Voltage Signal Waveform
G06671851Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig 2: Voltage Signal Waveform
G06671852Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
NOTE: The voltage waveform of the generator "B" terminal can undulate as shown above. 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 2 V 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.