ESC Operation Mode

STEP 1
The ESC analyzes the intention of the driver.

Fig 1: ESP Operation Mode - Step 1
Courtesy of KIA MOTORS AMERICA, INC.
STEP 2
It analyzes the movement of the ESC vehicle.

Fig 2: ESP Operation Mode - Step 2
Courtesy of KIA MOTORS AMERICA, INC.
STEP 3
The HECU calculates the required strategy, then actuates the appropriate valves and sends torque control requests via CAN to maintain vehicle stability.

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

Fig 1: Electronic Stability Control System Circuit Diagram - ESC Non-Operation-Normal Braking

G12163867

Courtesy 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

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)

Fig 2: Electronic Stability Control System Circuit Diagram - ESC Increase Mode

G12163868

Courtesy 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

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

Fig 3: Electronic Stability Control System Circuit Diagram - ESC Hold Mode (FR Only Controlled)

G12163869

Courtesy 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

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)

Fig 4: Electronic Stability Control System Circuit Diagram - ESC Decrease Mode (FR Only Controlled)

G12163870

Courtesy 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

Fig 5: Locating ABS Warning Lamp And EBD/Parking Brake Warning Lamp

G12163871

Courtesy of KIA MOTORS AMERICA, INC.