ESC Operation Mode: Notes

ESC Non-operation-Normal braking.

Fig 1: ESC Non-Operation-Normal Braking Diagram

Courtesy of HYUNDAI MOTOR CO.

Operation

In this position, the inlet valve and the TCS valve are open, the electrically operated shuttle valve and the outlet valve are closed.

* ESV : Electric reversing valve.

CONTINUITY CHART

Solenoid valve	Continuity	Valve	Motor pump	TC Valve
IN(NO)	OFF	OPEN	OFF	OFF
OUT(NC)	OFF	CLOSE	OFF	OFF

ESC operation

Fig 2: ESC Operation Diagram

Courtesy of HYUNDAI MOTOR CO.

Operation

The on/off booster builds up a pressure of approx. 10 bar in order to enable the ESC pump to suck brake fluid at low temperatures. In this position, the inlet valve is driven in a pulsed cycle. The TCS valve is closed. The outlet valve remains closed. The electrically operated shuttle valve is opened. The hydraulic pressure is led to the wheel brakes which are to be applied for a brief period of time.

CONTINUITY CHART

Solenoid valve		Continuity	Valve	Motor pump	TC Valve
Understeering (Only inside of rear wheel)	IN (NO)	OFF	OPEN	ON	ON
Understeering (Only inside of rear wheel)	OUT (NC)	OFF	CLOSE
Oversteering (Only outside of front wheel)	IN (NO)	OFF	OPEN
Oversteering (Only outside of front wheel)	OUT (NC)	OFF	CLOSE

Fig 3: Identifying Warning Lamps Location

Courtesy of HYUNDAI MOTOR CO.