1. AFLS ECU
2. Swivel module
LIN (Local Interconnect Network) is direct communication system to low-cost for electric system of vehicle.height sensor signal, vehicle speed, steering angle sensor signal are input to AFLS ECU to find out of headlamp position and AFLS ECU drive actuators through LIN communication.AFLS(Adaptive Front-Lighting System) drive Leveling Actuator-Intelligent Stepper Motor for adjusting up and down, and Swivel Actuator for adjusting right and left side. To detect center of projection module, Magnet is installed inside headlamp and Hall sensor. With sensor signal, projection module goes to initial postion after initialization.
AFLS ECU set this code If critical faulty in left side swivel actuator and AFLS lamp is on.
Item
Detecting Condition
Possible Cause
DTC Strategy
Signal monitoring
Power circuit short/open inside right swivel actuator
Hall switch not installed inside headlamp
Faulty right side swivel actuator
Enable Conditions
IG ON
Threshold Value
Internal circuit Short/open
Temperature rising over the 155?
Stall status by mechanical interference
Magnet not installed inside headlamp
Battery voltage is Below 9.5V
Detecting time
3sec
Fail Safe
Left Swivelling : stop with persent status
Right Swivelling : move to 0° position
Left Levelling : - 2.8% down
Rihgt Levelling : normal operation
Check Lamp
AFLS warning lamp on
Fig.1) LIN communication Signal Waveform