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Home >> Hyundai >> 2012 >> Genesis 5.0 R-Spec >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Head Lamp AFLS (Led) Diagnosis >> DTC B1905: Sensor Power Supply Fault >> Component inspection

Component inspection

  1. Ignition "OFF"
  2. Disconnect front height sensor connector and rear height sensor connector.
  3. Check that sensor connector power supply is within the specification after turning IG KEY "ON".
  4. Connect front height sensor connector and front height sensor connector.
  5. Measure the voltage of power circuit of each sensor with all connector connected.

    Specification:  Output voltage is not changed When front height sensor, rear height sensor connecting.

    (If the change of sensor power supply occur as connecting sensor connector, this means the occurrence of short inside of sensor.)

    YES 

    • Substitute with a known-good "Height sensor" and check for proper operation. If the problem is corrected, replace "Height sensor" and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Fault is intermittent caused by poor contact in the sensor's and/or ECU's connector or was repaired and ECU memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    * REFERENCE* 

    Perform the initializing after replace "Height sensor"

    * Vehicle condition 

    1. Park at lever land
    2. Vehicle speed ≤ 5km/h
    3. Engine r.p.m > 500rpm
    4. Connect GDS
    5. CAN communication is normal status
    6. Battery voltage > 10.5V
    7. Headlamp S/W ON, AFLS ON

      (1) Calibration

      Fig 1: Display - Select Calibration Screen
      G08840296Courtesy of HYUNDAI MOTOR AMERICA
      Fig 2: Display - Calibration Screen
      G08840297Courtesy of HYUNDAI MOTOR AMERICA

      (2) Clear "DTC"

      (3) Confirm the Headlamp movement through the Actuation Test

      Fig 3: Display - Actuation Test Screen
      G08840298Courtesy of HYUNDAI MOTOR AMERICA

      (4) Confirm the "DTC" and "Service data"

      Fig 4: Display - Engine ON AFLS Current Data
      G08840299Courtesy of HYUNDAI MOTOR AMERICA

      Select the Calibration, refer to Fig 1.

      Calibration, refer to Fig 2.

      Actuation Test, refer to Fig 3.

      Engine "ON" - AFLS's current data, refer to Fig 4.