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Kia Forte: ESC Operation Mode - ESC(Electronic Stability Control) System - Brake System - Kia Forte TD 2014-2018 Service ManualKia Forte: ESC Operation Mode

Second generation YD (2014-2018) / Kia Forte TD 2014-2018 Service Manual / Brake System / ESC(Electronic Stability Control) System / ESC Operation Mode

1.
STEP 1
The ESC analyzes the intention of the driver.

2.
STEP 2
It analyzes the movement of the ESC vehicle.
3.
STEP 3
The HECU calculates the required strategy, then actuates the appropriate valves and sents torque control requests via CAN to maintain vehicle stability.
ESC Operation Mode
1.
ESC Non-operation-Normal braking.

 Inlet valve(IV)
 Outlet valve(OV)
 Traction Control Valve(TCV)
 High pressure switch valve(HSV)
 Return pump
Normal braking
 Open
 Close
 Open
 Close
 OFF

  
IV : Inlet Valve
OV : Outlet Valve
RL : Rear left wheel
FR : Front right wheel
FL : Front left wheel
RR : Rear right wheel
RP : Return pump
TCV : Traction Control Valve
HSV : High pressure Switch Valve
2.
ESC Increase Mode

 Inlet valve(IV)
 Outlet valve(OV)
 Traction Control Valve(TCV)
 High pressure switch valve(HSV)
 Return pump
Normal braking
 Open
 Close
 Close(Partial)
 Open
 ON(Motor speed control)

  
IV : Inlet Valve
OV : Outlet Valve
RL : Rear left wheel
FR : Front right wheel
FL : Front left wheel
RR : Rear right wheel
RP : Return pump
TCV : Traction Control Valve
HSV : High pressure Switch Valve
3.
ESC Hold Mode ( FR is only controlled.)

 Inlet valve(IV)
 Outlet valve(OV)
 Traction Control Valve(TCV)
 High pressure switch valve(HSV)
 Return pump
Normal braking
 Close
 Close
 Close(Partial)
 Open
 OFF

  
IV : Inlet Valve
OV : Outlet Valve
RL : Rear left wheel
FR : Front right wheel
FL : Front left wheel
RR : Rear right wheel
RP : Return pump
TCV : Traction Control Valve
HSV : High pressure Switch Valve
4.
ESC Decrease Mode (FR is only controlled)

 Inlet valve(IV)
 Outlet valve(OV)
 Traction Control Valve(TCV)
 High pressure switch valve(HSV)
 Return pump
Normal braking
 Close
 Open
 Close(Partial)
 Open
 ON(Motor speed low control)

  
IV : Inlet Valve
OV : Outlet Valve
RL : Rear left wheel
FR : Front right wheel
FL : Front left wheel
RR : Rear right wheel
RP : Return pump
TCV : Traction Control Valve
HSV : High pressure Switch Valve

ABS Warning lamp
The active ABS warning lamp 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/Parking brake warning lamp
The active EBD warning lamp 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.
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 operates under the following conditions :
-
During the initialization phase after IGN ON. (continuously 3 seconds).
-
In the event of inhibition of ESC functions by failure.
-
During dignostic mode.
-
When the ECU Connector is separated from ECU.
-
When the ESC control is operating. (Blinking - 2Hz)
ESC OFF Lamp (ESC system)
The ESC OFF lamp indicates the self-test and operating status of the ESC.
The ESC OFF lamp is turned on under the following conditions :
-
During the initialization phase after IGN ON. (continuously 3 seconds).
-
When driver turn off the ESC function by on/off switch.
ESC On/Off Switch (ESC system)
•
1st stage
The ESC engine control function will stop when the ESC OFF indicator on the cluster turns on by pressing the ESC OFF button for 0.15 second. (The brake control function works normally.)
•
2nd stage
The ESC engine and brake control function will stop when the ESC OFF indicator on the cluster turns on by pressing the ESC OFF button for 3 seconds.
Description of ESC
Electronic Stability Control (ESC) recognizes critical driving conditions, such as panic reactions in dangerous situations, and stabilizes the vehicle by wheel-individual braking and engine c ...

Circuit Diagram - ESC (1)
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