Kia Stinger: Body Electrical System / Adaptive Front-Lighting System (AFS)

Kia Stinger CK 2018-2024 Service Manual / Body Electrical System / Adaptive Front-Lighting System (AFS)

Specifications

Content		Value
AFS	Nominal Voltage	DC 13.5V
	Max Voltage	16.5V
	Rated Voltage	DC 9.5 - 16V
	Operating Temperature	-22 to 167°F (-30 to 75°)
	Operating Current	MAX. 200mA

Components and components location

Components

1. Adaptive front-lighting system (AFS) unit
2. Rear height sensor

3. Headlamp (Swiveling, Leveling)

Schematic diagrams

Circuit Diagram

Description and operation

Description

Adaptive Front-Lighting System (AFS)

AFS (Adaptive Front-Lighting System) is a headlamp orientation control system that takes into account both steering angle and vehicle speed to orient the headlamps to an angle that provides better nighttime visibility.

Variable conditions make beam pattern of running vehicle kaleidoscope.

Component of AFS

1.	Input part : It is provided that information of speed sensor, height sensor and so on related to condition of vehicle.

2.	Control part (AFS Unit) : It controls Output part by analyzing/judging Input signal.

3.	Output part : It drive Low beam of H/Lamp to upper/lower and left/right side optimum beam pattern according to output control signal of AFS Unit.

Main function of AFS

Content

Description

Dynamic Bending
(Swivelling)

•	Providing optimum beam pattern in the curve road

1)	Enhanced visibility in the curve road

2)	Drive Low beam to left / right side

Automatic Leveling
(Leveling)

•	Compensating Low beam according to inclination of vehicle

1)	Compensation according to static condition (Load)

2)	Compensation according to dynamic condtion (Quick start, Sudden stop )

Fail-safe

•	Fail-safe reaction while detecting system failure and malfunction

1)	Detecting signal / communication error for Swivelling

2)	Detecting signal /communication error for Leveling

3)	Detecting system failure

Advantage of AFS

Content

Description

Enhanced stability

•	Visibility Guarantee In case of curve road

•	According to vehicle Speed/Steering angle, speed/angle of Swivel actuator is automatically controlled to provide optimum beam pattern

•	Fail-safe reaction application for Driver on opposite side road →In case error communication,automatically return initial position of Swivel actuator

Enhanced convenience

•	AFS operating application by driver's selection(AFS Off switch)

•	Providing Diagnostic function for detecting system failure and malfunction and check up data information (by using Diagnostic equipment )

•	Reduced wiring-harness by Applying CAN/LIN communication in vehicle

•	Fun Drving Function : Swivelling of Low beam → Increasing driver's pride

Block Diagram

Operation

Component

AFS Unit (A)

General

System initialization, In case of input Engine signal (AFS ECU, Levelling /Swivelling motor)

Adaptation of AFS OFF switch

AFS operate normally, only under turning low beam switch on.

Providing Tell-tale function of AFS (display ‘AFS’ on dashboard).

In case of system failure, display light on ‘AFS’ on dashboard

2.	Main function Swivelling function Levelling function Processing signal of Height sensor Control the shield drum to change the beam pattern Control the static bending light

Swivelling Motor (A)

1.	General communicate AFS Unit through LIN protocol Robust control to Disturbance Doesn't work out of rated voltage range.

2.	Main function & Rating Drive Low beam to left / right side Fail-safe function : In case of detecting malfunction or system failure , drive to secure position

Levelling Motor (A)

1.	Main spec communicate AFS Unit through LIN protocol Robust control to Disturbance Doesn't work out of rated voltage range.

2.	Main function & Rating Drive Low beam to upper / lower Fail-safe function : In case of detecting malfunction or system failure , drive to secure position

Height Sensor

1.	General Height Sensor connecting body & suspension measures inclination information from load condition. Vehicle having the Steel-suspension system transmits inclination signal to AFS ECU by using Hard-wire.

2.	Rating Rated Voltage : 5V ± 5%

LED Head lamp, LDM (A)

LDM system description.

LED (Light Emitting Diode) BEAM is largely composed of LED module, cooling fan and LDM (LED Driver Module).

LED module is composed of four units and each unit is composed of three LEDs.The cooling fan cools down the heat generated by LEDs.

The fan fails, it sends the fail signal to LDM.

LDM is a module that drives LEDs. It turns on or makes the warning lamp of the cluster flickering, if the fan or LED fails.

Repair procedures

Inspection

Initialization and diagnosis sequence by using diagnostic equipment

Below content summarize the procedure for A/S using Diagnostic equipment

Download Parameter

1.	Select "AFS" menu after selecting a vehicle.

2.	Select "Parameter download" menu for define a characteristc of vehicle.

3.	When "Parameter download" is done,display belows.

System Calibration

This menu is applied only if vehicle has a Steel suspension

1.	Select "AFS" menu after selecting a vehicle.

2.	The KDS will show the AFS calibration function steps.

3.	When "System calibration" is done,display belows.

AFS Setting Procedure

When it replace AFS ECU or H/Lamp Unit or Height sensor, it operates in setting procedure by using Diagnostic equipment following belows.

When AFS setting procedure operate, necessarily confirm suspension type and then download parameter.

※ DTC : Diagnostic Trouble Code

DBL : Dynamic bending Light

HLL : Head Lamp Leveling

Vehicle Condition While AFS Setting

1.	Vehicle on an even surface

2.	No vehicle movement

3.	Gear position in P & N

4.	Ignition switched on & Engine RPM >500 RPM

5.	Diagnostic equipment connected

6.	ALL ECUs on CAN mounted and activated

7.	Battery voltage > 10.5 V ( ECU supply to be ensured)

8.	Light switched

9.	AFS ON or OFF

Action In Case Of Download Wrong Parameter

1.	Download Delivery Parameter

2.	Check up B1661 (Parameter missing)

3.	Ignition OFF

4.	Ignition ON & Engine RPM > 500 RPM

5.	Download matching Paratmer

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