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Home >> Hyundai >> 2017 >> Santa Fe SE, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P0620: Alternator Control Circuit >> Wiring Inspection >> COM Circuit Inspection >> Check waveform
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Check waveform

  1. IG "OFF". Disconnect GDS.
  2. Connect probe to COM terminal to check control waveform by using oscilloscope function.
  3. ENG running monitor signal waveform.

    Specification:  refer to SIGNAL WAVEFORM & DATA 

  4. Is the measured waveform within specification?

    YES 

    • Go to "Check Open in harness" as follows.

    NO