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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Autonomous Emergency Braking (AEB) System Diagnosis (HEV) >> DTC C1620-78: Alignment Fail >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Monitoring alignment result
  1. Faulty SCC Radar alignment
  2. Deformation of SCC Radar bracket and vehicle frame
Enable Conditions
  • Ignition switch is on condition.
  • Battery voltage is between 9 volt and 16 volt.
Threshold Value
  • Alignment process does not complete successfully.
  • Can not recognize the calibration target.
  • Horizontal angle is above ±3 degree
  • Vertical angle is above ±1.5 degree
Diagnosis Time
  • Immediately
Fail Safe
  • SCC/AEB Disengagement/Shutdown
  • SCC/AEB Warning lamp turns 'ON'
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