Page 916 of 1575
11.Remove the four mounting bolts (A) of the parking brake wire bracket from the rear cross member.
12.Remove the rear wheels and tires from the rear hubs.
13. Remove the hub cap (A) and the disc (B).
14.Remove the hub nut (A) and washer (B) and remove the rear hub (C).
15.Remove the shoe hold down pin and spring (A) by pressing and rotating the spring.
Page 919 of 1575
9.Install the hub cap (A) and the disc (B).
10. Install the rear wheels and tires from the rear hubs.
11. Tighten the parking brake adjusting nut.
12. Install the parking brake wire and the pedal assembly.
ADJUSTMENT
ADJUSTMENT OF REAR BRAKE SHOE CLEARANCE
1. Raise the vehicle, and make sure it is securely supported.
2. Remove the rear wheel and tire from the rear hub.
3. After removing the plug from the disc, rotate the toothed wheel by a screw driver until the disc is not moving, and
then return it by 5 notches.
ADJUSTMENT PRECEDURE OF DIH FOOT PARKING BRAKE
1.Adjust the adjusting nut (A) so that parking pedal stoke is to be 88 ~ 98 mm(3.46 ~ 3.86 in) when operating effort
is 200 N(20 kgf, 44 lb) after full stroke operation of parking pedal over 3 times for setting parking wire.
Page 926 of 1575

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
Page 927 of 1575
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-
Page 928 of 1575

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
Page 930 of 1575
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
2. DECREASE MODE
Inlet valve(EV)Outlet valve(AV)Pump motor
Operation CloseOpenON(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
3. HOLD MODE
Inlet valve(EV)Outlet valve(AV)Pump motor
Operation CloseCloseOFF
Page 931 of 1575
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
4. INCREASE MODE
Inlet valve(EV)Outlet valve(AV)Pump motor
Operation OpenCloseOFF
Page 932 of 1575
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