LIN (Local Interconnect Network) is direct communication system to low-cost for electric system of vehicle.
height sensor signal, vehicle speed, steering angle sensor signal are input to AFLS ECU to find out of headlamp position and AFLS ECU drive actuators through LIN communication.
AFLS(Adaptive Front-Lighting System) drive Leveling Actuator-Intelligent Stepper Motor for adjusting up and down, and Swivel Actuator for adjusting right and left side. To detect center of projection module, Magnet is installed inside headlamp and Hall sensor is installed inside SSA. With sensor signal, projection module goes to initial postion after initialization.
AFLS ECU set this code If critical faulty in left side swivel actuator and AFLS lamp is on.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Signal monitoring | 1. Power circuit short/open 2. Headlamp |
Enable Conditions |
•
IG ON | |
Threshold Value |
•
internal circuit Short
•
Temperature rising over the 155℃
•
Stall status by mechanical interference
•
Magnet not installed inside headlamp | |
Detecting time |
•
3sec | |
Fail Safe |
•
Left Swivelling : stop with persent status Right Swivelling : move to 0° position Left Levelling : - 2.8% down Rihgt Levelling : normal operation | |
Check Lamp |
•
AFLS lamp on |
Fig.1) LIN communication Signal Waveform
