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. Based on the VSM message received while communicating with VDC, LKAS determines whether VSM is operating, and, if it is, LKAS stops its control.
While communicating with ABS and ESP via CAN lines, if the VSM signal is not received, the LKAS unit generates the fault code C168987 but does not turn 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. ABS/TCS/ESP Module |
Enable Conditions |
•
IG "ON" or ENG "ON"
•
If the VSM1 message is received during the key cycle for not less than 1 second (check if it is optional.) | |
Threshold Value |
•
If the VSM1 message is not received for 0.5 second | |
Diagnostic Time |
•
15 Sec. |
