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.
If a signal is received from TCU in irregular cycle via CAN lines, the LKAS module generates the fault code C121587 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 |
•
IG "ON" or Engine "ON" | |
Threshold Value |
•
If the transmission cycle of the TCS1 message increases to 200%+ for more than 5 times | |
Diagnostic Time |
•
Immediately |
