3-Mode Drive System
The EPS control unit has two power assist control maps which correspond to the 3-mode Drive System information sent from the gauge control module.
When the 3-mode Drive System is in the Normal or ECON Mode, the EPS control map is set to the normal, and when it is in the Sport Mode, the EPS control map is set to sport.
When the control map is set to normal, power assist is mapped to provide light and easy steering effort at low speeds. When the control map is set to sport, on the other hand, the system is set up to require more steering effort at low speed and it increases the self-alignment effort when turning compared with the normal control state. When the control modes switches, the system changes gradually (normal to sport: about 0.5 second, sport to normal: about 1.5 second) to avoid shocks caused by a sudden change in power assistance.