Kia Optima: ESC Operation Mode - Description and Operation - ESC(Electronic Stability Control) System - Brake System - Kia Optima TF 2011-2020 Service ManualKia Optima: ESC Operation Mode

ESC Hydraulic System Diagram

1. ESC Non-operation : Normal braking.

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

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

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.
- Cluster lamp is ON when communication is impossible with CAN module.
EBD/Parking Brake 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.
- Cluster lamp is ON when communication is impossible with CAN module.
ESC function/warning lamp (ESC system)

The ESC function/warning lamp indicates the self-test and failure status of the ESC.

The ESC function/warning lamp is turned on under the following conditions :
- During the initialization phase after IGN ON. (continuously 3 seconds).
- When the ESC function is inhibited by system failure.
- When the ESC control is operating. (Blinking - 2Hz)
- During diagnostic mode.(Except standard mode)
- Cluster lamp is ON when communication is impossible with CAN module.
ESC Off Lamp (ESC system)

The ESC Off lamp indicates the self-test and operating status of the ESC.

The ESC Off lamp operates under the following conditions :
- During the initialization mode after IGN ON. (continuously 3 seconds).
- ESC Off lamp is On when driver input the ESC Off switch.
ESC On/Off Switch (ESC system)

The ESC On/Off Switch shall be used to toggle the ESC 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 ESC function is on and switch toggle the state.


Description of ESC
Optimum driving safety now has a name : ESC, the Electronic Stability Control. ESC recognizes critical driving conditions, such as panic reactions in dangerous situations, and stabilizes the vehi ...

Schematic Diagrams
...

See also:

Inspection
1. Measure the output voltage between the terminal of the wheel speed sensor and the body ground. ...

Auto Light Sensor Repair procedures
Inspection In the state of IGN1 ON, when multi function switch module detects auto light switch on, tail lamp relay output and head lamp low relay output are controlled according to auto light ...

Adjustment
Stop lamp switch clearance adjustment If the gap between stop lamp switch and bracket is not 1.0 ~ 2.0mm(0.04~ 0.08in), conform to below. 1. Disconnect the stop lamp switch ...

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