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Home >> Hyundai >> 2012 >> Tucson GL, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) >> DTC P0620: Alternator Control Circuit >> General Information >> Signal Waveform & Data
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Signal Waveform & Data

Fig 1: Signal Waveform & Data Of Idle Status
G06871912Courtesy of HYUNDAI MOTOR CO.
Fig 2: Signal Waveform & Data Electrical Load (Head Lamp And Defrost ON)
G06871913Courtesy of HYUNDAI MOTOR CO.

Duty (+) from FR terminal is increased if electrical loads are ON (Head Lamp and Defrost are ON)

ECM controls generation of alternator with duty from FR terminal when electrical Loads turn on