Body Electrical System

General Description

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.

DTC Description

AHLS ECM sets DTC C1260 if AHLS ECM detects no signal changes inside of axle(height) sensor while vehicle is driving over 30km/h for 5min.

DTC Detecting Condition






Diagnostic Circuit Diagram






Scantool Diagnostics

1. Connect scantool with Diagnostic Connector.
2. Engine "ON" and Turn on the auto head light system.
3. Check "Actuator" parameter on scantool. (It should be checked while the vehicle is unloaded condition)

Specification :80%±2%






4. Is parameter displayed within the Specification?






Component Inspection

Check ECU(AHLS)
1. Engine "ON" and Head lamp"ON"
2. Lift the vehicle.
3. Disconnect the linkage of height sensor.
4. Monitor the "SENSOR ANGLE" Parameter on the Scantool while moving linkage vertically.
5. Is there any change in "SENSOR ANGLE" Parameter?






CAUTION:
Perform Vehicle Selection and Level Initialization with scantool if AHLS ECM is replace. (Auto Levelling Sensor)





Verification of Vehicle Repair

After a repair, it is essential to verifying that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode.
2. Using scantool, Clear DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Are any DTCs present ?