General Information

Auto Headlamp Leveling
C1522 Head lamp Switch Fault - General Information

Component Location





General Description

AHLS provides driver with the best visibility by adjusting vertical direction of the headlamp. It consists of AHLS ECU, Linkage and actuator. AHLS ECU detects the signal of headlamp switch which is operated by multi-function switch to diagnose the Headlamp light singal line.

DTC Description

AHLS ECM sets DTC C1522 if AHLS ECU detects HEAD Lamp signal circuit is open.

DTC Detecting Condition





Diagnostic Circuit Diagram