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Home >> Hyundai >> 2017 >> Elantra Eco >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 1.4L (3 Of 3) >> DTC P0620: Alternator Control Circuit >> Specification >> Signal Waveform & Data

Signal Waveform & Data

Fig 1: Scantool Display - Signal Waveform & Data (Idle Status)
G12019588Courtesy of HYUNDAI MOTOR AMERICA
Fig 2: Scantool Display - Signal Waveform & Data (Electrical Load With Head Lamp And Defrost ON)
G12019589Courtesy of HYUNDAI MOTOR AMERICA

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