System Description

SYSTEM

EPS SYSTEM : System Description






- EPS control unit performs an arithmetical operation on data, such as steering wheel turning force (sensor signal) from the torque sensor, vehicle speed signal, etc. Then it generates an optimum assist torque signal to the EPS motor according to the driving condition.
- In case of an error in the electrical system, the fail-safe function stops output signals to the EPS motor. EPS System.
- EPS control unit decreases the output signal to EPS motor while extremely using the power steering function (e.g., full steering)
consecutively for protecting EPS motor and EPS control unit (Overload protection control). Protection Function.
- Extensive steering at low speed will cause the EPS control unit and EPS motor to heat up, once temperature reaches critical point
EPS control unit will reduce current to reduce heat up. System will recover as temperature lowers (reduced or no assistance).
- In SPORT mode, changes the steering assist characteristic to enhance a stable steering feel according to the mode signals from multi display unit via CAN communication. (Models with Integrated
Control System)

SYSTEM DIAGRAM






Multi display unit is applied to models with Integrated Control System.

INPUT/OUTPUT SIGNAL

Communicates the signal from each control unit via CAN communication.










*: Models with Integrated Control System

EPS WARNING LAMP INDICATION

- Turn ON when there is a malfunction in EPS system. If indicates that fail-safe mode is engaged and enters a manual steering state (Control turning force steering wheel becomes heavy).
- Also turns ON when ignition switch is turned ON, for purpose of lamp check. Turns OFF after the engine starts, if system is normal.






CAUTION:
EPS warning lamp also turns ON due to data reception error, CAN communication error etc.