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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 76 (Auto Headlamp Leveling System Diagnosis (HEV)) >> DTC C1606: ECU Software Error >> Component Inspection

Component Inspection

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■ Check AHLS-ECU 

  1. Connect scantool to Data Link Connector (DLC).
  2. Engine "ON" and Head lamp "ON".
  3. Erase the DTC with scantool.
  4. Is it possible to erase the DTC with Scantool?

    YES 

    NO 

    • Substitute with a known-good "AHLS-ECM (SENSOR)" and check for proper operation. If the problem is corrected, replace "AHLS-ECM (SENSOR)" and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • After its repair done, Perform the lamp actuation by GDS in order to verify its normal operation.
    CAUTION: Perform Vehicle Selection and Level Initialization with scantool if AHLS ECM is replace. (Auto Levelling Sensor)
    Fig 1: Screen Display - Vehicle Selection And Leveling Initialization 1
    G10602919Courtesy of HYUNDAI MOTOR AMERICA
    Fig 2: Screen Display - Vehicle Selection And Leveling Initialization 2
    G10602920Courtesy of HYUNDAI MOTOR AMERICA
    Fig 3: Screen Display - Vehicle Selection And Leveling Initialization 3
    G10602921Courtesy of HYUNDAI MOTOR AMERICA
    Fig 4: Screen Display - Vehicle Selection And Leveling Initialization 4
    G10602922Courtesy of HYUNDAI MOTOR AMERICA