Kia Cee'd: 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 upper/lower and left/right side optimum beam pattern according to output control signal of AFLS Unit.
Main Function of AFLS
 

Content
Description
1
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
2
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 )
3
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 AFLS
 

Content
Description
1
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
2
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

Block Diagram

Operation
Component
AFLS Unit (A)
[LHD]

[RHD]

1.
General
System initialization, In case of input Engine signal (AFLS ECU, Levelling /Swivelling motor)
AFLS operate normally ,only under turning auto light 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
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 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
Levelling Motor (A)

1.
Main spec
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 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 AFLS ECU by using Hard-wire.
2.
Rating
Rated Voltage : 5V ± 5%
Components and components location
Components [AFLS ECU] ...

Repair procedures
Inspection Initialization and diagnosis sequence by using diagnostic equipment Below content summarize the procedure for A/S using Diagnostic equipment Download Parameter ...

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