Electronic Stability Program (ESP) (if equipped) (Nissan Note E11)

During heavy acceleration or driving on slippery road surfaces, the vehicle's wheels may begin to slip, and the vehicle may enter an uncontrolled skid. The vehicle's electronic stability program (ESP) is able to detect the vehicle's loss of directional stability using sensor signals and help the driver maintain the vehicle on the desired trajectory. To maintain the vehicle's directional stability, the system constantly regulates the pressure in the brake cylinders and the engine torque.

When the ESP system is activated, the indicator starts flashing deterioration of traction on the road surface, located on the dashboard.

When only the anti-skid system, which is part of the ESP system, is activated, the traction control indicator also starts to flash .

If the traction indicator is flashing this means that the car is driving on a slippery road.

Indicators:

• If the ESP system is not functioning properly, the road grip indicator lights up and the dynamic stabilization system shutdown indicator , located on the instrument panel.
• As long as these indicators are lit, the vehicle's dynamic stabilization system will not function.

The article was obtained from the portal NissanBook.ru

The vehicle's electronic stability program (ESP) uses a braking system to apply force to the slipping drive wheel "Brake Limited Slip Differential" (BLSD) to improve the traction properties of the vehicle. The BLSD system operates when one of the wheels begins to slip on a slippery surface. The BLSD system, braking the slipping wheel, provides a corresponding increase in torque on the other wheel of the axle, which has better traction with the supporting surface.

When the ESP system is deactivated, none of the ESP functions will operate. When the ESP system is deactivated, the BLSD and ABS systems continue to operate. When the BLSD or ABS system is activated, the indicator flashes , a characteristic noise is heard and/or a pulsation is felt on the brake pedal. These symptoms do not indicate any malfunction.

Usually, when ESP is switched on, a slight vibration is felt on the brake pedal, which is accompanied by a characteristic noise from the modulator located under the hood. This vibration and noise are an external manifestation of the ESP operation and indicate the serviceability of the dynamic stabilization system.



ESP failure diagnostics are performed by the control unit each time the engine is started while the vehicle is moving forward or backward at low speed. During such self-diagnostics, you may hear a characteristic noise and/or feel a slight pulsation on the brake pedal. These symptoms do not indicate any malfunction.

Note:
In normal driving conditions, the ESP system should be switched on. However, sometimes it is advisable to switch it off to allow some wheel slip:

• - when driving through deep snow or mud;while trying to free a car stuck in the snow;when driving with snow chains.

Electronic Stability Program (ESP) Switch

The Electronic Stability Program (ESP) must be enabled under normal vehicle driving conditions.

However, when driving on deep snow or wet ground, the ESP system reduces engine power (even with maximum pressure on the accelerator pedal), trying to reduce wheel slip. The engine speed will be reduced even with the accelerator pedal fully depressed. If maximum power is needed to pull out a stuck car, turn off the ESP system.

To turn off the ESP system, press the switch shown in the figure. The indicator will turn on.