Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Genesis >> 2021 >> G70 2.0T, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 2.0L (5 Of 6) >> DTC P0620-00: Alternator Control Circuit >> Component Inspection >> ECM check

ECM check

  1. Turn "OFF" the ignition switch.
  2. Select "Vehicle Scopemeter" in the menu, and connect channel A of GDS with FR terminal of Alternator harness connector
  3. Connect Channel B of GDS with C terminal of Alternator harness connector.
  4. Start the engine start. And check the signal waveforms. (Compare the signal waveform of electrical loads ON with OFF)

    Specification  : Refer to Signal Waveform & Data

  5. Is the measured signal waveforms of Alternator normal?

    YES 

    NO 

    • Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
scientia non olet · About Mike's Workshop Manuals