AFLS(Adaptive Front-Lighting System) provides driver with the best visibility by adjusting vertical direction of the headlamp. 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. It consists of AFLS ECU, Leveling Actuator-Intelligent Stepper Motor, Swivel Actuator, Head lamp switch, Height sensor(not applied to ECS). Height sensor input information of vehicle's altitude to AFLS ECU. Height sensor consists of rotor, stator, PCB coil, sensor lever.The height sensor is not-contact point type sensor use lever's movements angle that measure formed the magnetic field at around stator by rotator's revolution.
AFLS ECU set this code If front height sensor signal wiring harness open or short to battery or input value is out of available range. and also incorrect information input for suspension's type can be caused B1907 thus perform the daignostic procedure after checking suspension's type.
Item
Detecting Condition
Possible Cause
DTC Strategy
Signal monitoring
Front height sensor open/short
Front height sensor incorrect install
Faulty in Front height sensor
Enable Conditions
IG ON
Threshold Value
Open signal
short to battery(+5V or B+)
Exceed cognizance range of sensor( ± 54° )
Detecting time
1sec
Fail Safe
Levelling :1.5% down
Swivelling : normal operation
Check Lamp
NO