1. Rear Height Sensor
2. Front Height Sensor
For AFLS(Adaptive Front-Lighting System), when driving at night , It provides for optimum headlamp intelligent headlamp system for various driving status. Each of the headlamps to investigate vertical and horizontal beam pattern is controlled by varying the driver to provide the best view. The system configuration is AFLS ECU, garage sensors and actuators which drives up and down(Leveling Actuator-Intelligent Stepper Motor).
AFLS ECU checks a height sensor and sets the DTC B1953 for missing a signal of height sensor.
Item
Detecting Condition
Possible Cause
DTC Strategy
Signal monitoring
Height sensor circuit Open/Short
Height sensor not installed properly
Faulty Height sensor
Faulty AFLS ECU
Enable Conditions
IG ON and Engine on
Threshold Value
Missing a signal(PWM) of Height sensor(Front & Rear).
Detecting time
5sec.
Fail Safe
Leveling -1.5% down
Swivelling : normal operation.
Check Lamp
NO