ESP Operation

ESP OPERATION MODE





1. ESP Non-operation-Normal braking.

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.





2. ESP operation

Operation








The on/off booster builds up a pressure of approximately. 10 bar in order to enable the ESP 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.

ABS WARNING LAMP MODULE
The active ABS warning lamp module indicates the self test and failure status of the ABS The ABS warning lamp shall be on:
- During the initialization phase after IGN ON. (continuously 3 seconds).
- In the event of inhibition of ABS functions by failure.
- During diagnostic mode.
- When the ECU Connector is separated from ECU.

EBD WARNING LAMP MODULE
The active EBD warning lamp module indicates the self test and failure status of the EBD. However, in case the Parking Brake Switch is turned on, the EBD warning lamp is always turned on regardless of EBD functions. The EBD warning lamp shall be on:
- During the initialization phase after IGN ON. (continuously 3 seconds).
- When the Parking Brake Switch is ON or brake fluid level is low.
- When the EBD function is out of order.
- During diagnostic mode.
- When the ECU Connector is separated from ECU.

ESP WARNING LAMP (ESP SYSTEM)
The ESP warning lamp indicates the self-test and failure status of the ESR
The ESP warning lamp is turned on under the following conditions :
- During the initialization phase after IGN ON. (continuously 3 seconds).
- In the event of inhibition of ESP functions by failure.
- When driver turns off the ESP function by on/off switch.
- During diagnostic mode.

ESP FUNCTION LAMP (ESP SYSTEM)
The ESP function lamp indicates the self-test and operating status of the ESP
The ESP Function lamp operates under the following conditions :
- During the initialization phase after IGN ON. (continuously 3 seconds).
- When the ESP control is operating. (Blinking - 2Hz)

ESP ON/OFF SWITCH (ESP SYSTEM)
The ESP On/Off Switch shall be used to toggle the ESP function between On/Off states based upon driver input. The On/Off switch shall be a normally open, momentary contact switch. Closed contacts switch the circuit to ignition. Initial status of the ESP function is on and switch toggle the state.