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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 73 (Power Steering System Diagnosis (HEV)) >> DTC C1109: IGN Signal Error >> W/Harness Inspection >> Power Circuit Inspection

Power Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

■ Open or Short Check 

  1. Ignition "OFF"
  2. Disconnect EPS CM connector.
  3. Ignition "ON" & Engine "OFF".
  4. Measure voltage between ON/START INPUT terminal of EPS CM harness connector and chassis ground.

    Specification:  Battery Voltage

    Fig 1: Measuring Voltage Between On/Start Input Terminal And Chassis Ground
    G10603256Courtesy of HYUNDAI MOTOR AMERICA
  5. Is the measured voltage within specifications?

    YES 

    NO 

    • Check for open or blown fuse referring to "Circuit Diagram".
    • Repair open or short in power circuit between battery and EPS CM harness connector and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.