KIA CARNIVAL 2007 Workshop Manual

2.STEP 2
It analyzes the movement of the ESP vehicle.
3. STEP 3
he HECU calculates the required strategy, then actuates the appropriate valves and sents torque control requests
via CAN to maintain vehicle stability.
ESP OPERATION MODE
1.ESP Non- operation - Normal braking.
Inlet valve(EV)Outlet valve(AV)Pilot valve(USV)High pressure
switch valve(HSV)Pump motor
Normal braking OpenCloseOpenCloseOFF
EV : Inlet Valve
AV : Outlet Valve
LR : Rear left wheel
RF : Front right wheel
LF : Front left wheel
RR : Rear right wheel
PE : Pump motor

USV : Pilot Valve
HSV : High pressure Switch Valve
2. ESP INCREASE MODE
Inlet valve(EV)Outlet valve(AV)Pilot valve(USV)High pressure
switch valve(HSV)Pump motor
Normal braking OpenCloseClose(Partial)OpenON(Motor speed
control)
EV : Inlet Valve
AV : Outlet Valve
LR : Rear left wheel
RF : Front right wheel
LF : Front left wheel
RR : Rear right wheel
PE : Pump motor
USV : Pilot Valve
HSV : High pressure Switch Valve
3. ESP HOLD MODE ( FR is only controlled.)
Inlet valve(EV)Outlet valve(AV)Pilot valve(USV)High pressure
switch valve(HSV)Pump motor
Normal braking CloseCloseClose(Partial)OpenON(Motor speed
low control)

EV : Inlet Valve
AV : Outlet Valve
LR : Rear left wheel
RF : Front right wheel
LF : Front left wheel
RR : Rear right wheel
PE : Pump motor
USV : Pilot Valve
HSV : High pressure Switch Valve
4. ESP DECREASE MODE (FR is only controlled)
Inlet valve(EV)Outlet valve(AV)Pilot valve(USV)High pressure
switch valve(HSV)Pump motor
Normal braking CloseOpenClose(Partial)OpenON(Motor speed
low control)

EV : Inlet Valve
AV : Outlet Valve
LR : Rear left wheel
RF : Front right wheel
LF : Front left wheel
RR : Rear right wheel
PE : Pump motor
USV : Pilot Valve
HSV : High pressure Switch Valve
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:a. During the initialization phase after IGN ON. (continuously 3 seconds).
b. In the event of inhibition of ABS functions by failure.
c. During diagnostic mode.
d. When the ECU Connector is seperated from ECU.
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:a. During the initialization phase after IGN ON. (continuously 3 seconds).
b. When the Parking Brake Switch is ON or brake fluid level is low.
c. When the EBD function is out of order .
d. During diagnostic mode.
e. When the ECU Connector is seperated from ECU.
ESP Warning Lamp (ESP system)
The ESP warning lamp indicates the self - test and failure status of the ESP.
The ESP warning lamp is turned on under the following conditions :
a. During the initialization phase after IGN ON. (continuously 3 seconds).
b. In the event of inhibition of ESP functions by failure.
c. When driver turn off the ESP function by on/off switch.
d. During diagnostic mode.
ESC Function Lamp (ESC system)
The ESP function lamp indicates the self - test and operating status of the ESP.
The ESP Function lamp operates under the following conditions :
a. During the initialization phase after IGN ON. (continuously 3 seconds).
b. 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.
Initial status of the ESP function is on and the switch is used to request an ESC status change.

2007 > 2.7L V6 GASOLINE >
COMPONENTS

2007 > 2.7L V6 GASOLINE >
FAILURE DIAGNOSIS
1.In principle, ESP and TCS controls are prohibited in case of ABS failure.
2. When ESP or TCS fails, only the failed system control is prohibited.
3. However, when the solenoid valve relay should be turned off in case of ESP failure, refer to the ABS fail- safe.
4. Information on ABS fail- safe is identical to the fail- safe in systems where ESP is not installed.
MEMORY OF FAIL CODE
1.It keeps the code as far as the backup lamp power is connected. (O)
2. It keeps the code as long as the HCU power is on. (X)
FAILURE CHECKUP
1.Initial checkup is performed immediately after the HECU power on.
2. Valve relay checkup is performed immediately after the IG2 ON.
3. It executes the checkup all the time while the IG2 power is on.
4. Initial checkup is made in the following cases.
(1) When no failure is detected
(2) When ABS and ESP are not in control.
(3) Initial checkup is not made after ECU power on.
(4) If the vehicle speed is over 5 mph(8 km/h) when the brake lamp switch is off.
(5) When the vehicle speed is over 24.8 mph(40 km/h).
5. Though, it keeps on checkup even if the brake lamp switch is on.
6. When performing ABS or ESP control before the initial checkup, stop the initial checkup and wait for the HECU
power input again.
7. Judge failure in the following cases.
(1) When the power is normal.
(2) From the point in which the vehicle speed reaches 4.9 mph(8 km/h) after HECU power on.
COUNTERMEASURES IN FAIL
1.Shut the system down and perform the following actions and wait for HECU power OFF.
2. Turn the valve relay off.
3. Do not perform any ABS/TCS/ESC functions until normal operating condition is restored.
WARNING LAMP ON
1.ABS warning lamp turns on when ABS is malfunctioning.
2. ESP operation lamp turns on when ESP is malfunctioning.
When power voltage and valve relay voltage are abnormal, input/output related failure judgment is not made.

Steering Angle Sensor

2007 > 2.7L V6 GASOLINE >
DESCRIPTION
1.The yaw - rate & lateral G sensor is applied for the ESP system.
2. The yaw - rate is the angular velocity, when a vehicle turns a corner, and the lateral G is the acceleration to move a
vehicle out of the way when cornering.
3. The sensor is located in the crash pad lower floor on vehicle.
SPECIFICATION
Description SpecificationRemark
Nominal supply voltage 11.5 ~ 12.5 V
Supply voltage range 8 ~ 16 V
Supply current Max. 120 mATyp. 75 mA
Reference Voltage Output 2.464 ~ 2.536 VTyp. 2.5 V
Operating temperature range - 40 ~ 85°C
Yaw - late sensor Measurement range+w direction, left turn
Min.100 °/sTyp. 111 °/S
- w direction, right turn Min.100 °/sTyp. 111 °/S
Non- linearity - 1 ~ 1 %
Offset (within life,within operating temperature) 3.75 °/S
Upper cut- off frequency Min. 45 HzTyp. 60 Hz
Lateral G sensor Measurement range+y direction, left turn
Min.1.8 gTyp. 2 g
- y direction, right turn Min. - 1.8 gTyp. 2 g
Non- linearity - 4 ~ 4 %
Offset (within life,within operating temperature) - 0.09 ~ 0.09 g
Upper cut- off frequency Min. 20 HzTyp. 40 Hz
OUTPUT CHARACTERISTIC

CIRCUIT DIAGRAM (YAW-RATE & LATERAL G SENSOR)