AHLS provides driver with the best visibility by adjusting vertical direction of the headlamp. It consists of AHLS ECU, 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.
To set the value of the initial position sensor, must be set the position between Magnet and Hall sensor. Otherwise it detects the DTC C1258.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Check the setting status of Hall IC and Magnet (Switch from the IG OFF status to the IG ON status) | 1. Poor setting of the Hall IC and Magnet 2. Replacement of the AHLS ECU & height sensor |
Detecting mode |
•
Engine "ON" and Head lamp "ON" | |
Threshold Value |
•
It detects when does not complete setting between Hall IC and Magnet | |
Detecting time |
•
Switch from the IG OFF status to the IG ON status | |
Fail Safe |
•
maintain the current status |
