brake sensor KIA CARNIVAL 2007 Owner's Manual

18Voltage for hybrid ECU 1 A500 mA 60200
5,10,17,19 signal wheel speed sensor FL,
FR, RL,RR
6 mA
16 mA 250200 to
ground 1.5M to bat
16,9,6,8 Voltage supply for the active
wheel speed sensor FL,FR,
RL, RR 6 mA
16 mA 250200 to
ground 1.5M to bat
14,24 wheel speed sensor output
(FR, RL) 20 mA
10 mA 250200
11 Diagnostic wire K 6 mA3 mA 250200
22 ABS - warning lamp actuation 30 mA5 mA 250200
12 EBD- warning lamp actuation 30 mA5 mA 250200
20 brake light switch 10 mA5 mA 250200
15 CAN Low 30 mA20 mA 250200
26 CAN High 30 mA20 mA 250200
ABS HECU CONNECTOR Connector terminal SpecificationCondition
Number Description
1 Ground for recirculation pump Current range: Min.10A
Max.20~39A Always
4 Ground for solenoid valves and
ECU Current range: Min.2.5A
Max.5~15A Always
2 Voltage supply for pump motor
Battery voltageAlways
3 Voltage supply for solenoid valves
16 Voltage supply for the active
wheel speed sensor FL,FR, RL, RR Battery voltage
IG ON
9
6
8
5
signal wheel speed sensor FL, FR, RL,RR Voltage(High) : 0.89~1.26 V
Voltage (Low) : 0.44~0.63 V On driving
10
17
19
11
Diagnostic wire K Voltage (High)
≥ 0.8 * IG ON
Voltage (Low) ≤ 0.2 * IG ON On SCAN TOOL
communication
18 Voltage for hybrid ECU Battery voltageKEY ON/OFF
20 Brake light switch Voltage (High)
≥ 0.8 * IG ON
Voltage (Low) ≤ 0.3 * IG ON BRAKE ON/OFF
SENSOR OUTPUT ON SCAN TOOL(ABS) Description AbbreviationUnitRemarks
1 Vehicle speed sensor VEH. SPDKm/h
2 Battery voltage BATT. VOLV
3 FL Wheel speed sensor FL WHEELKm/h

4FR Wheel speed sensor FR WHEELKm/h
5 RL Wheel speed sensor RL WHEELKm/h
6 RR Wheel speed sensor RR WHEELKm/h
7 ABS Warning lamp ABS LAMP-
8 EBD Warning lamp EBD LAMP-
9 Brake Lamp B/LAMP-
10 Pump relay state PUMP RLY-
11 Valve relay state VALVE RLY-
12 Motor MOTOR-
13 Front Left valve(IN) FL INLET-
14 Front Right valve (IN) FR INLET-
15 Rear Left valve (IN) RL INLET-
16 Rear Right valve (IN) RR INLET-
17 Front Left valve (OUT) FL OUTLET-
18 Front Right valve (OUT) FR OUTLET-
19 Rear Left valve(OUT) RL OUTLET-
20 Rear Right valve (OUT) RR OUTLET-

2007 > 2.7L V6 GASOLINE >
DESCRIPTION
This specification applies to HCU(Hydraulic Control Unit) and ECU(Electronic Control Unit) of the HECU.(Hydraulic and
Electronic Control Unit)
This specification is for the wiring design and installation of ABS/TCS/ESC ECU.
This unit has the functions as follows.
a. Input of signal from Pressure sensor, Steering angle sensor, Yaw & Lateral G sensor, the wheel speed sensors
attached to each wheel.
b. Control of braking force / traction force/ yaw moment.
c. Failsafe function.
d. Self diagnosis function.
e. Interface with the external diagnosis tester.
Installation position : engine compartment a. Brake tube length from Master cylinder port to HECU inlet port should be max. 1m
b. The position should not be close to the engine block and not lower than the wheel.
OPERATION
The ECU shall be put into operation by switching on the operating voltage (IGN).
On completion of the initialization phase, the ECU shall be ready for operation.
In the operating condition, the ECU shall be ready, within the specified limits (voltage and temperature), to process the
signals offered by the various sensors and switches in accordance with the control algorithm defined by the software
and to control the hydraulic and electrical actuators.
Wheel Sensor signal processing
The ECU shall receive wheel speed signal from the four active wheel sensors.
The wheel signals are converted to voltage signal by the signal conditioning circuit after receiving current signal from
active wheel sensors and given as input to the MCU.
Solenoid Valve Control
When one side of the valve coil is connected to the positive voltage that is provided through the valve relay and the
other side is connected to the ground by the semiconductor circuit, the solenoid valve goes into operation.
The electrical function of the coils are always monitored by the valve test pulse under normal operation conditions.
Voltage limits
a.Overvoltage
When overvoltage is detected(above 16.8 V), the ECU switches off the valve relay and shuts down the system.
When voltage is returned to operating range, the system goes back to the normal condition after the initialization
phase.
b. Undervoltage
In the event of undervoltage(below 9.3 V), ABS control shall be inhibited and the warning lamp shall be turned on.
When voltage is returned to operating range, the warning lamp is switched off and ECU returns to normal operating
mode.
Pump Motor Checking
The ECU performs a pump motor test at a speed of 15km/h once after IGN is switched on.
Diagnostic Interface
Failures detected by the ECU are encoded on the ECU, stored in a EEPROM and read out by diagnostic equipment
when the ignition switch is turned on.
The diagnosis interface can also be used for testing the ECU during production of the ECU and for actuating the HCU
(Air - bleeding line or Roll and Brake Test line).
Warning Lamp module

c.Stop lamp switch circuit.
d. Check the hydraulic circuit for leakage.
Communication with Scan tool is not possible.
(Communication with any system is not possible) a.
Power source circuit
b. Diagnosis line
Communication with Scan tool is not possible.
(Communication with ABS only is not possible) a.
Power source circuit
b. Diagnosis line
c. HECU
When ignition key is turned ON (engine OFF), the ABS
warning lamp does not light up. a.
ABS warning lamp circuit
b. HECU
Even after the engine is started, the ABS warning lamp
remains ON. a.
ABS warning lamp circuit
b. HECU
During ABS operation, the brake pedal may vibrate or may not be able to be depressed. Such phenomena are
due to intermittent changes in hydraulic pressure inside the brake line to prevent the wheels from locking and is
not an abnormality.
DETECTING CONDITION
Trouble Symptoms Possible Cause
Brake operation varies depending on driving conditions and road
surface conditions, so diagnosis can be difficult.However if a normal
DTC is displayed, check the following probable cause. When the
problem is still occurring, replace the ABS control module. a.
Inoperative power source circuit
b. Inoperative wheel speed sensor circuit
c. Inoperative hydraulic circuit for leakage
d. Inoperative HECU
INSPECTION PROCEDURES
DTC INSPECTION
1. Connect the Scan Tool with the data link connector and turn the ignition switch ON.
2. Verify that the system is operating to specifications.
Is the system operating to specifications ?
▶ Check the power source circuit.
▶ Erase the DTC and recheck using Scan Tool.
CHECK THE POWER SOURCE CIRCUIT.
1. Disconnect the connector from the ABS control module.
2. Turn the ignition switch ON, measure the voltage between terminal 18 of the ABS control module harness side
connector and body ground.
Specification: approximately B+
Is the voltage within specification?
▶ Check the ground circuit.
▶ Check the harness or connector between the fuse (10A) in the engine compartment junction block and the ABS
control module. Repair if necessary.

control module. Repair if necessary.
CHECK THE GROUND CIRCUIT.
1.Disconnect the connector from the ABS control module.
2. Check for continuity between terminals 1,4 of the ABS control module harness side connector and ground point.
Is there continuity?
▶ Check the wheel speed sensor circuit.
▶ Repair an open in the wire and ground point.
CHECK THE WHEEL SPEED SENSOR CIRCUIT.
Refer to the DTC troubleshooting procedures.
Is the system operating to specifications ?
▶ Check the hydraulic circuit for leakage.
▶ Repair or replace the wheel speed sensor.
CHECK THE HYDRAULIC CIRCUIT FOR LEAKAGE.
Refer to the hydraulic lines.
Inspect leakage of the hydraulic lines.
Is the system operating to specifications ?
▶ The problem is still occurring, replace the ABS control module.
▶ Replace the leaking hydraulic lines.
DETECTING CONDITION
Trouble Symptoms Possible Cause
Brake operation varies depending on driving conditions and road
surface conditions, so diagnosis can be difficult.However if a normal
DTC is displayed, check the following probable cause. When the a.
Inoperative power source circuit
b. Inoperative wheel speed sensor circuit

DTC is displayed, check the following probable cause. When the
problem is still occurring, replace the ABS control module.b.
Inoperative wheel speed sensor circuit
c. Inoperative hydraulic circuit for leakage
d. Inoperative HECU
INSPECTION PROCEDURES
DTC INSPECTION
1. Connect the Scan Tool with the data link connector and turn the ignition switch ON.
2. Verify that the system is operating to specifications.
Is the system operating to specifications ?
▶ Check the wheel speed sensor circuit.
▶ Erase the DTC and recheck using Scan Tool.
CHECK THE WHEEL SPEED SENSOR CIRCUIT.
Refer to the DTC troubleshooting procedures.
Is the system operating to specifications ?
▶ Check the stop lamp switch circuit.
▶ Repair or replace the wheel speed sensor.
CHECK THE STOP LAMP SWITCH CIRCUIT.
1. Check that stop lamp lights up when brake pedal is depressed and turns off when brake pedal is released.
2. Measure the voltage between terminal 20 of the ABS control module harness side connector and body ground
when brake pedal is depressed.
Specification: approximately B+
Is the voltage within specification?
▶ Check the hydraulic circuit for leakage.
▶ Repair the stop lamp switch. Repair an open in the wire between the ABS control module and the stop lamp
switch.
CHECK THE HYDRAULIC CIRCUIT FOR LEAKAGE.
Refer to the hydraulic lines.
Inspect leakage of the hydraulic lines.
Is the system operating to specifications ?
▶ The problem is still occurring, replace the ABS control module.

DTCDESCRIPTION WARNING LAMP
REMARK
ABS EBDESC
C1101 BATTERY VOLTAGE HIGH ООО
C1102 BATTERY VOLTAGE LOW ОО
C1200 FL WHEEL SPEED SENSOR- OPEN/SHORT ОО
C1201 FL WHEEL SENSOR- RANGE/ PERFORMANCE ОО
C1202 FL WHEEL WHEEL SPEED SENSOR- NO SIGNAL ОО
C1203 FR WHEEL SPEED SENSOR- OPEN/SHORT ОО
C1204 FR WHEEL SENSOR- RANGE/ PERFORMANCE ОО
C1205 FR WHEEL SPEED SENSOR- NO SIGNAL ОО
C1206 RL WHEEL SPEED SENSOR- OPEN/SHORT ОО
C1207 RL WHEEL SENSOR- RANGE/ PERFORMANCE ОО
C1208 RL WHEEL SPEED SENSOR- NO SIGNAL ОО
C1209 RR WHEEL SPEED SENSOR- OPEN/SHORT ОО
C1210 RR WHEEL SENSOR- RANGE/ PERFORMANCE ОО
C1211 RR WHEEL SPEED SENSOR- NO SIGNAL ОО
C1213 WHEEL SPEED FREQUENCY ERROR ОО
C1235 PRESSURE SENSOR- ELECTRICAL ОESP
C1237 PRESSURE SENSOR- SIGNAL FAULT ОESP
C1260 STEERING ANGLE SENSOR- SIGNAL ОESP
C1261 STEERING ANGLE SENSOR NOT CALIBRATED ОESP
C1282 YAW RATE & LATERAL G SENSOR- ELECTRICAL ОESP
C1283 YAW RATE & LATERAL G SENSOR- SIGNAL ОESP
C1503 ESP SWITCH ERROR ОESP
C1513 BRAKE LIGHT SWITCH MALFUNCTION О
C1604 ECU HARDWARE ERROR ООО
C1605 CAN CONTROL HARDWARE ERROR ОESP
C1611 CAN TIME OUT- PCM(ECM) ОESP
C1612 CAN TIME OUT- PCM(TCM) ОESP
C1616 CAN BUS OFF ОESP
C1623 CAN TIMEOUT STEERING ANGLE SENSOR ОESP
C1625 CAN TIME OUT- ESP ОESP
C1626 IMPLAUSIBLE CONTROL ООESP
C1702 VARIANT CODING ООО ESP
C2112 VALVE RELAY MALFUNCTION ООО
C2308 FL INLET VALVE MALFUNCTION ООО
C2312 FL OUTLET VALVE MALFUNCTION ООО
C2316 FR INLET VALVE MALFUNCTION ООО
C2320 FR OUTLET VALVE MALFUNCTION ООО
C2324 RL INLET VALVE MALFUNCTION ООО
C2328 RL OUTLET VALVE MALFUNCTION ООО

26Wheel sensor voltage(FL)
Battery voltageIG ON
9
Wheel sensor voltage(FR)
6 Wheel sensor voltage(RL)
8 Wheel sensor voltage(RR)
5 Wheel sensor signal(FL)
Voltage(High) : 0.89~1.26 VVoltage(Low) : 0.44~0.63 V RUNNING
10
Wheel sensor signal(FR)
27 Wheel sensor signal(RL)
29 Wheel sensor signal(RR)
11 Diagnosis Input/oupput Voltage(High) : 0.8 * IG ON more
Voltage(Low) : 0.2 * IG ON lower SCAN TOOL
Communication
28 Ignition Battery voltageKEY ON/OFF
31 ESP Passive switch Voltage(High) : 0.6 * IG ON more
Voltage(Low) : 0.4 * IG ON lower Switch ON/OFF
36 Hand brake switch Voltage(High) : 0.7 * IG ON more
Voltage(Low) : 0.3 * IG ON lower Switch ON/OFF
37 Yaw Rate Sensor Test Voltage(High) : 4.1 V more
Voltage(Low) : 1 V lower IG ON
18 Yaw Rate Sensor Reference 2.464 V ~ 2.536 VIG ON
16 Yaw Rate Sensor Signal
Offset voltage :2.5 V
range : 0.35 V ~ 4.65 V(- 100 ~ 100 °/s) IG ON
20 Acceleration Sensor Signal Offset voltage :2.5 V
range : 0.35 V ~ 4.65 V(- 1.8 g ~ 1.8 g) IG ON
15 Yaw Rate Sensor Ground GND LEVELAlways
35 CAN High not communicating:2.5 ± 0.5 V
communication :
IG ON
14 CAN Low
30 BRAKE LIGHT SWITCH voltage(High) : 0.8 * IG ON more
voltage(Low) : 0.3 * IG ON lower BRAKE ON/OFF

2007 > 2.7L V6 GASOLINE >
description of ESP
Optimum driving safety now has a name : ESP, the Electronic Stability Control.
ESP recognizes critical driving conditions, such as panic reactions in dangerous situations, and stabilizes the vehicle
by wheel- individual braking and engine control intervention with no needfor actuating the brake or the gas pedal.
ESP adds a further function known as Active Yaw Control (AYC) to the ABS, TCS, EBD and ESP functions. Whereas
the ABS/TCS function controls wheel slip during braking and acceleration and, thus, mainly intervenes in the
longitudinal dynamics of the vehicle, active yaw control stabilizes the vehicle about its vertical axis.
This is achieved by wheel individual brake intervention and adaptation of the momentary engine torque with no need
for any action to be taken by the driver.
ESC essentially consists of three assemblies : the sensors, the electronic control unit and the actuators.
Of course, the stability control feature works under all driving and operating conditions. Under certain driving
conditions, the ABS/TCS function can be activated simultaneously with the ESP function in response to a command
by the driver.
In the event of a failure of the stability control function, the basic safety function, ABS, is still maintained.
DESCRIPTION OF ESP CONTROL
ESP system includes ABS/EBD, TCS and AYC (Active yaw control) function.
ABS/EBD function : The ECU changes the active sensor signal (current shift) coming from the four wheel sensors to
the square waveform.By using the input of above signals, the ECU calculates the vehicle speed and the acceleration
& deceleration of the four wheels.And, the ECU judges whether the ABS/EBD should be actuated or not.
TCS function prevents the wheel slip of drive direction by adding the brake pressure and engine torque reduction via
CAN communication.TCS function uses the wheel speed sensor signal to determine the wheel slip as far as ABS
function.
AYC function prevents unstable maneuver of the vehicle. To determine the vehicle maneuver, AYC function uses the
maneuver sensor signals(Yaw Rate Sensor, Lateral Acceleration Sensor, Steering Wheel Angle Sensor).If vehicle
maneuver is unstable (Over Steer or Under Steer), AYC function applies the brake pressure on certain wheel, and
send engine torque reduction signal by CAN.
After the key - on, the ECU continually diagnoses the system failure. (self- diagnosis)If the system failure is detected,
the ECU informs driver of the system failure through the BRAKE/ABS/ESP warning lamp. (fail- safe warning)

c.A steering angle sensor used in ESP adjusts 0° setting of steering wheel through K- line or CAN
communication.
2. STEERING ANGLE SENSOR (SAS) CALIBRATION METHOD
(1) Align the wheel to the straight line. (steering wheel < ± 5° )
ex) Perform the wheel alignment first.
Align the wheel to the straight line.
A driver moves the vehicle to the front and back about 5 meters twice or three times.
(2) Connect Scan tool to the vehicle.
(3) Select Brake system.
(4) Select Steering angle sensor(SAS) calibration.
(5)Perform the Steering angle sensor(SAS) calibration.
(6)Perform the procedure continuously.