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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Auto Headlamp Leveling System Diagnosis (Except HEV) >> DTC C1522: Headlamp Switch Signal Line Open >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Voltage check
  1. Poor connection
  2. Open circuit in Head Lamp switch signal
  3. poor connection in AHLDM connector
Enable Conditions
  • IG "ON"
Threshold Value
  • The signal line from head lamp open
  • Light off: below 4V, light on: above 8V
Detecting Time
  • 2 sec.
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