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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 >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Voltage Monitoring
  1. Faulty ground circuit
  2. Poor connection in ground circuit
  3. Open in IG circuit
Enable conditions
  • System power ON
Threshold value
  • When a vehicle speed through CAN line is over 3km/h in the status of Ignition OFF.
  • When an Engine RPM signal through CAN line is over 500 RPM in the status of Ignition OFF and continue more than 4 seconds.
  • When a signal of Ignition ON is detected with CAN communication OFF.
Fail Safe
  • Motor: ON
  • Relay: ON
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