Hyundai Elantra: Adaptive Front Lighting System / Description and Operation

Hyundai Elantra AD (2016-2020) Service Manual / Body Electrical System / Adaptive Front Lighting System / Description and Operation

Description

Adaptive Front-lighting System (AFLS)

AFLS(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 AFLS

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

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

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

Main function of AFLS

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

Fail-safe

•	Fail-safe reaction while detecting system failure and malfunction

1.	Detecting signal / communication error for Swivelling

2.	Detecting system failure

Advantage of AFLS

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

•	AFLS operating application by driver's selection(AFLS 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

Operation

Component

AFLS Unit (A)

1.	General System initialization, In case of input Engine signal (AFLS ECU /Swivelling motor) AFLS operate normally ,only under turning low beam switch on. Providing Tel-tale function of AFLS (display ‘AFLS’ on dashboard). In case of system failure, display light on ‘AFLS’ on dashboard

2.	Main function Swivelling function Control the shield drum to change the beam pattern

Swivelling Motor (A)

1.	General communicate AFLS 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

Schematic Diagrams

Circuit Diagram ...

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 "AFLS" menu ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: Driving Your Vehicle
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Hyundai Elantra AD (2016-2020) Service Manual: Manifold Absolute Pressure Sensor (MAPS) Repair procedures
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