SCC(Smart Cruise Control) has additional function which helps to keep safety distance from the car ahead as compared with conventional ACC(Auto Cruise Control). Control step is as follows.
1. Radar sensor measures distance from the car ahead and relative speed (Radar Sensor)
2. SCC calculates acceleration/deceleration value for keeping relevant distance from the car ahead according to speed and transmits this value to ESP system.
3. ESP performs engine torque and brake control after calculating torque for making received acceleration/deceleration value.
Main cause of this code is a problem related to ESP. In case that ESP can not perform torque control due to having a problem, ESP sends a message which represents torque control disable to SCC. SCC monitors torque control disable message from ESP with every reception of the CAN message. SCC sets this code when it recognizes torque control disable message being true.
Item
Detecting Condition
Possible cause
DTC Strategy
CAN message monitoring
ESP system error
Enable Conditions
-
Threshold value
SCC receives a message which indicates torque control disable from ESP ECU
Diagnosis Time
Recover Condition
As soon as the malfunction is inexistent with the next ignition cycle