Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Genesis >> 2021 >> G90 5.0 Ultimate, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 5.0L (7 Of 9) >> DTC P0685-00: ECM/PCM Power Relay Control Circuit/Open >> Component Inspection >> Check Main relay

Check Main relay

  1. Substitute with a known - good main relay (Metal core block) and check for proper operation.
  2. Is the signal normal?
  3. Is the measured resistance within specification?

    YES 

    • Substitute with a known - good main relay (Metal core block) and check for proper operation. If the problem is corrected, replace main relay (Metal core block) and go to "VERIFICATION OF VEHICLE REPAIR ".

    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 ".
scientia non olet · About Mike's Workshop Manuals