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Home › Kia › 2014 › Sedona EX › Repair and Diagnosis › Brakes › Traction Control › Electronic Stability Control (ESC) System › Description And Operation › ESC Operation Mode

ESC Operation Mode

  1. The ESC analyzes the intention of the driver.
    Fig 1: ESC Operation Mode - Communication Diagram
    G07389526Courtesy of KIA MOTORS AMERICA, INC.
  2. It analyzes the movement of the ESC vehicle.
    Fig 2: ESC Vehicle Movement - Communication Diagram
    G07389527Courtesy of KIA MOTORS AMERICA, INC.
  3. The HECU calculates the required strategy, then actuates the appropriate valves and sends torque control requests via CAN to maintain vehicle stability.


  1. ESC Non-operation-Normal braking.
    ESC OPERATION MODE REFERENCE

      Inlet valve (IV) Outlet valve (OV) Traction Control Valve (TCV) High pressure switch valve (HSV) Return pump
    Normal braking Open Close Open Close OFF
    Fig 1: ESC Operation Mode - Circuit Diagram
    G07389528Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: 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
    ESC INCREASE MODE REFERENCE

      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)
    Fig 2: ESC Increase Mode - Circuit Diagram
    G07389529Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: 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.)
    ESC HOLD MODE REFERENCE

      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
    Fig 3: ESC Hold Mode - Circuit Diagram
    G07389530Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: 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)
ESC DECREASE MODE REFERENCE

  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)
Fig 4: ESC Decrease Mode - Circuit Diagram
G07389531Courtesy of KIA MOTORS AMERICA, INC.
NOTE:

IV : Inlet Valve

OV : Outlet Valve

RL : Rear Left Wheel

FR : Front Right Wheel

FL : Front Left Wheel

RR : Right Rear Wheel

RP : Return Pump

TCV : Traction Control Valve

HSV : High Pressure Switch Valve

Fig 5: Identifying ABS Warning Lamp & Parking Brake Warning Lamp
G07389532Courtesy of KIA MOTORS AMERICA, INC.
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