Hyundai Genesis: Auto Head Lamp Leveling Device / Auto Head Lamp Leveling Unit Troubleshooting

Inspection with GDS

No	Procedure
1	Park the vehicle on level ground
2	Tire check
3	IGN1 ON
4	Head lamp Low Beam ON
5	Connection with diagnostic tool
6	Initial command by diagnostic tool
7	Clear DTC Code
8	IGN1 OFF > ON
9	Re- Connection with diagnostic tool
10	Checking of HLLD output value as 15% and DTC Code
11	HLLD actuating by diagnostic tool command
12	Head lamp mechanical Initial Aiming

1. Empty the vehicle of all the load and park it on level ground. 2. Check the HLLD output value (15%) after initial setting. 3. After the electrical initial setting with a diagnostic tool, perform the mechanical aiming.

1.	Select the vehicle model and "Auto Head Lamp Leveling System (AHLS)"

2.	Check the sensor output value and data of each item on the system information screen.

3.	To perform functional test on AHLS outputs, select "Actuation Test".

4.	Select " Parameter setting & Zero position Initial".

5.	Confirm that AHLS operate forcefully in "Head lamp leveling" menu.

6.	To check the DTC of the head lamp leveling system, select "Diagnostic trouble codes"

Auto Head Lamp Leveling Unit Repair procedures

Inspection 1. Ignition "ON". 2. Turn on the head lamp switch. 3. Check that the aim of the head lamp changes smoothly when the head lamp leveling device switch is turned on. 4. If it ...

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