LKAS is a device that maintains the vehicle within a lane by detecting the lane via a camera, calculating the vehicle position and the steering force required to keep the vehicle running in the center of the lane, and controlling the vehicle accordingly. The system consists of a LKAS unit, cluster, MDPS and power switch. LKAS uses yaw rate and horizontal G-sensor acceleration values to control the steering force, keeping the vehicle running in the center of a lane.
LKAS is a device that maintains the vehicle within a lane by detecting the lane via a camera, calculating the vehicle position and the steering force required to keep the vehicle running in the center of the lane, and controlling the vehicle accordingly. The system consists of a LKAS unit, cluster, MDPS and power switch. From the VDC signals, LKAS obtains yaw rate and horizontal acceleration values.
If the yaw rate and horizontal acceleration signals are not received via CAN lines, the LKAS module generates the fault code C128386 and turns on the Malfunction Indicator Lamp.
If the yaw rate and horizontal G-sensor values are not received via CAN lines, the LKAS module generates the fault code C128387 and turns on the Malfunction Indicator Lamp.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Detect a CAN communication signal | 1. Poor contact with a connector 2. Open or short-circuited CAN communication line 3. yaw-rate and lateral G sensor 4. ABS/TCS/ESP Module |
Enable Conditions |
•
If the vehicle speed is 50Km/h or faster when IG is "ON" or the engine is "ON" | |
Threshold Value |
•
If, in the ESP2 message, the horizontal acceleration signal is received for 0.01 second or longer, or the yaw rate signal is received for more than 3 times | |
Diagnostic Time |
•
Immediately |
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Detect a CAN communication signal | 1. Poor contact with a connector 2. Open or short-circuited CAN communication line 3. ABS/TCS/ESP Module |
Enable Conditions |
•
If the vehicle speed is 50Km/h or faster when IG is "ON" or the engine is "ON" | |
Threshold Value |
•
If the transmission cycle of the ESP2 message increases to 200% + for more than 5 times | |
Diagnostic Time |
•
Immediately |
