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. The TCU signal is used to determine whether the reverse gear is selected, and, if it is selected, the LKAS control stops.
While communicating with the VDC module via CAN, if a signal is received from TCU in irregular cycle, the LKAS module generates the fault code C180187 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. ABS/TCS/ESP Module |
Enable Conditions |
•
If the vehicle speed is 50 KPH or faster when IG is “ON” or the engine is “ON.” | |
Threshold Value |
•
If the transmission cycle of the TCU1 message increases to 200%+ for more than 5 times | |
Diagnostic Time |
•
Immediately |
