The ESP system is the shorten word of Electronic Stability Control system. This system recognizes a critical driving condition by Yaw-rate sensor, Lateral acceleration sensor and Steering angle sensor. And then it stabilizes the vehicle by a individual wheel braking and engine torque control through CAN communication. There is no difference in the HECU's hardware side according to a vehicle speficiation, but there is a difference in its software side because the applied vehicle parameters differ according to a vehicle specification. The HECU stores the variant code value in the ECU's memory based on the received data by CAN communication.
The HECU checks variant code and if an inappropriate variant code or no variant code is detected, this DTC is set.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Internal monitoring |
•
Variant coding not carried out
•
Faulty HECU |
Enable Conditions |
•
when a variant code isn't entered in the HECU | |
Fail Safe |
•
ABS/ESP funtions are inhibited.
•
ABS/ESP warning lamps are activated. |
