Signal Waveform & Data

Fig 1: Normal Waveform With IG ON And Normal Waveform With Idle And No Electrical Load

Courtesy of HYUNDAI MOTOR CO.

The normal FR circuit duty signal under IG ON state
→ Low level voltage < 1.5 V: Normality, Low level voltage = 1.5 V: Abnormality

Fig 2: Normal Waveform With Idle And Part Electrical Load And Normal Waveform With Full Electrical Load

Courtesy of HYUNDAI MOTOR CO.

The normal FR circuit duty signal under engine running state
→ 5% < FR circuit duty < 95% : Normality, FR circuit duty < 3% : Abnormality