AHLS provides driver with the best visibility by adjusting vertical direction of the headlamp. It consists of ECM, Linkage and actuator. ECM ouputs the singal based on the driving and loading condition and delivers it to actuator, and then the actuator changes vertical direction of the headlamp .
AHLS ECM sets DTC C2226 If AHLS ECM detects Signal circuit of Actuator is short to ground or battery.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage check |
•
Poor connection
•
Short circuit to chasis ground and battery
•
Faulty AHLS ECU |
Detecting mode |
•
IG KEY ON, ENGINE ON, HEAD LAMP ON | |
Threshold Value |
•
Short to Battery AND Short to GND | |
Detecting time |
•
2 Sec |
