AHLS provides driver with the best visibility by adjusting vertical direction of the headlamp. It consists of ECM, Linkage and actuator. The height sensor measures the angular displacement of lever by measuring the magnetic field of stator parts formed by rotation of rotor
The ECM sets DTC C1255 if the useable range of 90˚ is overridden caused by separation of actuator clamping bolt or lifting of vehicle
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Leveling road angle check | ● When lifted ● Faulty height sensor |
Detecting mode | ● every 20ms | |
Threshold value | ● Angle >90˚ |