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Home >> Hyundai >> 2017 >> Santa Fe XL Base >> 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

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 

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