Component Inspection

■ Check AHLS-ECU 

1. Engine "ON" and Head lamp "ON"
2. Lift the vehicle.
3. Disconnect the linkage of height sensor.
4. Monitor the "SENSOR ANGLE" Parameter on the Scantool while moving linkage vertically.
5. Is there any change in "SENSOR ANGLE" Parameter?

   YES 

   • This is a intermittent problem caused by poor contact of component or Control Unit.
   • Thoroughly check the looseness, poor connection, bent, corrosion, contamination, deformation or damage of connector.
   • Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

   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

   Courtesy of HYUNDAI MOTOR AMERICA
   Fig 2: Screen Display - Vehicle Selection And Leveling Initialization 2

   Courtesy of HYUNDAI MOTOR AMERICA
   Fig 3: Screen Display - Vehicle Selection And Leveling Initialization 3

   Courtesy of HYUNDAI MOTOR AMERICA
   Fig 4: Screen Display - Vehicle Selection And Leveling Initialization 4

   Courtesy of HYUNDAI MOTOR AMERICA