Brake System

GENERAL ABS (ANTI-LOCK BRAKE SYSTEM)

ANTI-LOCK BRAKING SYSTEM CONTROL
BRAKE SYSTEM MODULE
BRAKE BOOSTER FRONT WHEEL SPEED SENSOR
BRAKE LINE REAR WHEEL SPEED SENSOR
BRAKE PEDAL
FRONT DISC BRAKE EBD (ELECTRONIC BRAKE-FORCE DIS-
MASTER CYLINDER
TRIBUTION)
PROPORTIONING VALVE
REAR DISC BRAKE
REAR DRUM BRAKE ESP(ELECTRONIC STABILITY PROGRAM)
SYSTEM
PARKING BRAKE SYSTEM YAW-RATE SENSOR
PARKING BRAKE ESP SWITCH
PARKING BRAKE SWITCH STEERING WHEEL ANGLE SPEED SENSOR
BR -2 BRAKE SYSTEM

GENERAL
SPECIFICATIONS EA11CB1B

Item Specification
Master cylinder
· Type Tandem type
· I.D. mm(in) 25.4/(1.0)
· Piston stroke mm(in) 31(1.22)
· Output port(ABS/ESP) 2port
· Fluid level warning sensor Provided
Brake booster
· Type Vacuum
· Effective dia. mm(in.) 8+9 in
· Boosting ratio 9:1
Front brake(Disc)
· Type Floating type with ventilated disc
· Disc O.D. 280 mm (11.02 in)
· Disc I.D. 172 mm (6.77 in.)
· Disc thickness 26 mm (1.02 in)
· Pad thickness 11 mm (0.43 in)
· Cylinder type single piston
· Cylinder I.D. 57.2 mm (2.25 in.)
Rear brake(Drum)
· Type Leading trailing drum
· Drum I.D. 228.6 mm (9.0 in.)
· Lining width 42 mm (1.65 in.)
· Brake offset 29.6 mm (1.17 in)
Rear brake(Disc)
· Type Floating type with solid disc
· Disc O.D. 262 mm (10.31 in.)
· Parking Brake Drum I.D 168 mm (6.61 in.)
· Disc thickness 10 mm (0.39 in.)
· Pad thickness 10 mm (0.39 in.)
· Cylinder type single piston
· Cylinder I.D 34 mm (1.34 in.)
Parking brake
· Actuation Mechanical brake acting on rear wheels
· Cable arrangement Lever

O.D=Outer Diameter
I.D=Inner Diameter

NOTE
ABS : Anti-lock Brake System
ESP : Electronic Stability Program
GENERAL BR -3

SPECIFICATION (ABS) E6F779E2

Part Item Standard value Remark

4 channel 4 sensor
System
(Solenoid)

HECU(Hydraulic and Motor, valve relay ·ABS system:ABS

Type
Electronic Control Unit) intergrated type EBD control
Operating voltage 10 V~16 V(DC)
Operating temperature -40~120 C(-40~248 F)
·ABS W/L:ABS
failure
Operating voltage 12 V ·Brake W/L:Parking,
Warning lamp brake oil, EBD
failure
Current consumption 80 mA
Supply voltage DC 4.5~2.0 V
Output current low 5.9~8.4 mA Typ.7 mA
Output current High 11.8~16.8 mA Typ.14 mA
Acitve wheel speed Frequency range 1~2500 HZ
sensor(ABS)
0.4~1.0 mm
Air gap
(0.0157~0.04 in.)
Tone wheel 47 teeth
Output duty 30~70 %
BR -4 BRAKE SYSTEM

SPECIFICATION(ESP)

Part Item Standard value Remark

4 channel 4
System
sensor(Solenoid)

HECU(Hydraulic and Motor, valve relay ·Total control(ABS,

Type
Electronic Control Unit) intergrated type EBD, TCS, ESP)
Operating voltage 10 V~16 V(DC)
Operating temperature -40~120 C(-40~248 F)
Operating voltage 12 V ·ESP Operating
Warning lamp Lamp
Current consumption 80 mA ·ESP Warning Lamp
Supply voltage DC 4.5~20 V
Output current low 5.9~8. mA
Output current high 11.8~16.8 mA
Active wheel speed
sensor Tone wheel 47 teeth
Frequency range 1~2500 HZ
0.4~1.0 mm
Airgap
(0.02~0.04 in)
Operating Voltage 8 V~16 V
Steering Wheel Angle
Current Consumption Max 150 mA
Sensor
Operating Angular velocity Max ±2000 /sec
Operating Voltage 8 V~16 V
Current Consumption Max. 120 mA

Yaw-rate Lateral Output Voltage 0.35 V~4.65 V

G sensor Yaw Sensor Operating Range ±100 /s
G Sensor Operating Range ±1.8 G
Reference voltage output 2.464~2.536 V Typ. 2.5 V
GENERAL BR -5

SERVICE STANDARD E9E4D54D

Standard value Service limit

Brake pedal height 184.5 mm(7.264 in.)
Brake pedal full stroke 128 mm (5.04 in.)
Adjust Brake pedal full stroke 76.2 mm(3 in.)
Brake pedal free play 3~8 mm(0.11~0.31 in.)
Stop lamp switch outer case to pedal
0.5~1.0 mm (0.02~0.04 in.)
stopper clearance
Booster push rod to master cylinder
0 (at 500 mmHg vacuum)
piston clearance
Parking brake lever stroke when lever
assembly is pulled with 196N (20Kgf, 7 clicks
44lb force)
Front disc brake pad thickness 11 mm (0.43 in.) 2 mm (0.079 in.)
Front disc thickness 26 mm (1.024 in.) 24.4 mm ( 0.961 in.)
Front disc runout Max.0.03 mm ( 0.001 in.)
Front disc thickness variation Max.0.005 mm (0.0002 in.)
Rear drum brake lining width 42 mm (1.65 in.)
Rear drum brake drum I.D. 228.6 mm (9 in.) Max.230.6mm (9.079 in.)
Rear disc brake pad thickness 10 mm (0.394 in.) 2 mm (0.079 in.)
Rear disc brake disc thickness 10 mm (0.394 in.) 8 mm (0.315 in.)
Rear disc runout Max.0.03 mm ( 0.001 in.)
Rear disc thickness variation Max.0.01 mm ( 0.0004 in.)

TIGHTENING TORQUE

Nm Kgf·cm lb-ft
Master cylinder to booster mounting nut 7.84~11.76 80~120 5.9~8.9
Brake booster mounting nut 12.74~15.68 130~160 9.6~11.8
Bleeder screw 6.86~12.74 70~130 5.2~9.6
13.72~16.66 (M10) 140~170 (M10) 10.326~12.54 (M10)
Brake tube nut, brake hose
18.62~22.54 (M12) 190~230 (M12) 14.01~16.964 (M12)
Caliper assembly to knuckle 78.4~98 800~1000 59.0~73.8
Brake hose to front caliper 24.5~29.4 250~300 18.4~22.1
Brake hub flange nut 196~254.8 2000~2600 147.5~191.8
Push rod locking nut 15.68~21.56 160~220 11.8~16.2
Caliper guide rod bolt 21.56~31.36 220~320 16.2~23.6
Stop lamp switch mounting nut 7.84~9.8 80~100 5.9~7.38
BR -6 BRAKE SYSTEM

TIGHTENING TORQUE (ABS)

Item Nm kgf·cm Ib-ft

Active wheel speed sensor mounting
7.84~8.82 80~90 5.9~6.54
bolt on the brake plate

Hydraulic electronic control unit 13.72~17.64 140~180 10.326~13.276

mounting bolt

Hydraulic electronic control unit 16.66~25.48 170~260 12.54~19.177

mounting bracket bolt
Brake tubes nut 13.72~16.66 140~170 10.326~12.54
Air bleeder screw 6.86~12.74 70~130 5~9.6

TIGHTENING TORQUE (ESP)

Item Nm kgf·cm Ib-ft

Yaw rate lateral acceleration sensor Nut 4.9~7.84 50~80 3.69~5.9

Brake tube nut 13.72~16.66 (M10) 140~170 (M10) 10.326~12.54 (M10)
18.62~22.54(M12) 190~230(M12) 14.01~16.964 (M12)
GENERAL BR -7

SPECIAL TOOL EF2DDBAE

Tool(Number and Name) Illustration Use

09581-11000 Spreading the front disc
Piston expander brake piston

EJDA043A

TROUBLESHOOTING E8F58C98

PROBLEM SYMPTOMS TABLE

Use the table below to help you find the cause of the prob-
lem. The numbers indicate the priority of the like cause of
the problem. Check each part in order. If necessary, re-
place these parts

Symptom Suspect Area Reference

Lower pedal or 1. Brake system (Fluid leaks) repair
spongy pedal 2. Brake system (Air in) air·bleed
3. Piston seals (Worn or damaged) replace
4. Rear brake shoe clearance(Out of adjustment) adjust
5. Master cylinder (Faulty) replace
Brake drag 1. Brake pedal freeplay (Minimum) adjust
2. Parking brake lever travel (Out of adjustment) adjust
3. Parking brake wire (Sticking) repair
4. Rear brake shoe clearance(Out of adjustment) adjust
5. Pad or lining (Cracked or distorted) replace
6. Piston (Stuck) replace
7. Piston (Frozen) replace
8. Anchor or Return spring (Faulty) replace
9. Booster system (Vacuum leaks) repair
10. Master cylinder (Faulty) replace
Brake pull 1. Piston (Sticking) replace
2. Pad or lining (Oily) replace
3. Piston (Frozen) replace
4. Disc (Scored) replace
5. Pad or lining (Cracked or distorted) replace
Hard pedal but brake 1. Brake system (Fluid leaks) repair
inefficient 2. Brake system (Air in) air·bleed
3. Pad or lining (Worn) replace
4. Pad or lining (Cracked or distorted) replace
5. Rear brake shoe clearance(Out of adjustment) adjust
6. Pad or lining (Oily) adjust
7. Pad or lining (Glazed) replace
8. Disc (Scored) replace
9. Booster system (Vacuum leaks) repair
BR -8 BRAKE SYSTEM

Symptom Suspect Area Reference

Noise from brake 1. Pad or lining (Cracked or distorted) replace
2. Installation bolt (Loosen) adjust
3. Disc (Scored) replace
4. Sliding pin (Worn) replace
5. Pad or lining (Dirty) clean
6. Pad or lining (Glazed) replace
7. Anchor or Return spring (Faulty) replace
8. Brake pad shim (Damage) replace
9. Shoe hold-down spring (Damage) replace
Brake fades 1. master cylinder replace
Brake vibration, 1. brake booster replace
pulsation 2. pedal free play adjust
3. master cylinder replace
4. caliper replace
5. master cylinder cap seal replace
6. damaged brake lines replace
Brake Chatter Brake chatter is usually caused by loose or worn components, or
glazed or burnt linings. Rotors with hard spots can also contribute
to brake chatter. Additional causes of chatter are out-of-tolerance
rotors, brake lining not securely attached to the shoes, loose
wheel bearings and contaminated brake lining.
BRAKE SYSTEM BR -9

BRAKE SYSTEM
OPERATION AND LEAKAGE
CHECK ECC7DE4E
CHECK ALL OF THE FOLLOWING ITEMS:

Component Procedure
Brake Booster (A) Check brake operation by applying the brakes during a test drive. If the brakes
do not work properly, check the brake booster. Replace the brake booster as an
assembly if it does not work properly or if there are signs of leakage.
Piston cup and pressure • Check brake operation by applying the brakes. Look for damage or signs of
cup inspection (B) fluid leakage. Replace the master cylinder as an assembly if the pedal does
not work properly or if there is damage or signs of fluid leakage.
• Check for a difference in brake pedal stroke between quick and slow brake
applications. Replace the master cylinder if there is a difference in pedal stroke.
Brake hoses (C ) Look for damage or signs of fluid leakage. Replace the brake hose with
a new one if it is damaged or leaking.
Caliper piston seal and Check brake operation by applying the brakes.
piston boots (D) Look for damage or signs of fluid leakage. If the pedal does not work properly,
the brakes drag, or there is damage or signs of fluid leakage, disassemble
and inspect the brake caliper. Replace the boots and seals with new ones
whenever thebrake caliper is disassembled.

C
A

B
C

C
D

EJRF500A
BR -10 BRAKE SYSTEM

BRAKE BOOSTER OPERATING TEST 3. With the engine running, step on the brake pedal and
then stop the engine.
For simple checking of the brake booster operation, carry Hold the pedal depressed for 30 seconds. If the pedal
out the following tests height does not change, the booster is in good condi-
tion, if the pedal rises, the booster is defective.
1. Run the engine for one or two minutes, and then stop If the above three tests are okay, the booster perfor-
it. If the pedal depresses fully the first time but grad- mance can be determined as good.
ually becomes higher when depressed succeeding Even if one of the above three tests is not okay, check
times, the booster is operating properly, if the pedal the check valve, vacuum hose and booster for defect.
height remains unchanged, thebooster is defective.

Good No good
Good No good

3rd
2nd
1st

EJRF500C
EJRF500B

2. With the engine stopped, step on the brake pedal sev-

eral times.
Then step on the brake pedal and start the engine. If
the pedal moves downward slightly, the booster is in
good condition. If there is no change, the booster is
defective.

When engine is stopped When engine is started

EGGB700B
BRAKE SYSTEM BR -11

VACUUM HOSE (CHECK VALVE) BRAKE PEDAL BRAKE SWITCH ADJUSTMENT

INSPECTION PEDAL HEIGHET

1. Disconnect the brake booster vacuum hose (check

valve built in) (A) at the booster (B). 1. Disconnect the brake switch connector, loosen the
brake switch locknut (A), and brake off the brake
2. Start the engine and let it idle. There should be vac- switch (B) until it is no longer touching the brake
uum available. If no vacuum is available, the check pedal.
valve is not working properly. Replace the brake
booster vacuum hose and check valve and retest. 2. Lift up the carpet. At the insulator cutout, measure
B
the pedal height (C) from the middle of the left-side
A
center of the pedal pad (D).

Standard pedal height( with carpet removed):

184.5 mm(7.26 in.)

EJRF500D C

EJKE001A
BR -12 BRAKE SYSTEM

3. Loosen the pushrod locknut (A), and screw the PEDAL FREE PLAY
pushrod in or out with pliers until the standard pedal
height from the floor is reached. After adjustment, 1. With the engine off, inspect the pedal free play (A) on
tighten the locknut firmly. Do not adjust the pedal the pedal pad (B) by pushing the pedal by hand.
height with the pushrod depressed.
Free play: 3~8 mm (0.12~0.31 in.)

Lower the pedal

Raise
the pedal B

A
15.68~21.56 Nm
(160~220 kgf cm, 11.64~16 lb-ft)
A
EJRF500E

BRAKE SWITCH CLEARANCE

Screw in the brake switch until its plunger is fully de-

pressed (threded end (A) touching the pad (B) on the
pedal arm) then brake off the switch 3/4 turn to make
EJKE001D
0.5~1.0mm(0.0197~0.0394 in.) of clearance between the
brake switch connector. Make sure that the brake lights 2. If the pedal free play is out of specification, adjust the
go off when the pedal is released. brake switch (C). If the pedal free play is insufficient,
it may result in brake drag.

EJKE001C
BRAKE SYSTEM BR -13

INSPECTION OF FRONT DISC BRAKE PAD INSPECTION OF REAR DISC BRAKE PAD

1. Check the brake pad thickness through the caliper 1. Check the rear disk brake pad thickness through the
body inspection hole. caliper body inspection hole.

Pad thickness Pad thickness

Standard value : 11.0 mm ( 0.43 in.) Standard value : 10.0 mm (0.39 in.)
Service limit : 2.0 mm (0.0787 in.) Service limit : 2.0 mm (0.0787 in.)

EGGE700M

CAUTION
• If the pad thickness is out of specification, left
and right pads must be replaced as a com-
plete set.
• When the thickness difference between the
left pad and right pad is large, check the slid-
ing condition of the piston and the guide rod.

KJQE050H

CAUTION
• If the pad lining thickness is out of specilfica-
tion, left and right pads must be replaced as
a complete set.
• When the thickness difference between the
left pad and right pad is large, check the slid-
ing condition of the piston and the guide rod.
BR -14 BRAKE SYSTEM

BRAKE BOOSTER

COMPONENTS E7AF580C

4
1 2

5
12.74~15.68
(130~160, 9.45~11.63)

15.68~21.56
8 6 (160~220, 11.63~15.99)
7

7.84~11.76(80~120, 5.82~8.72)

TORQUE : Nm (kgf cm, lb-ft)

1. Vacuum hose 5. Clevis pin

2. Check valve 6. Brake booster
3. Snap pin 7. Master cylinder
4. Seal 8. Washer
EJRF500F
BRAKE SYSTEM BR -15

REMOVAL EDB5B296 4. Remove the four booster mounting nuts (C).

1. Remove the master cylinder. 5. Remove the brake booster (A).

2. Disconnect the vacuum hose (A) from the brake

booster (B).

A B A

LJIF501U

3. Remove the snap pin (A) and clevis pin (B). EJKE305D

B
A

C
C
12.74~15.68 Nm
(130~160 kgf cm,
9.45~11.63 lb-ft)
EJRF500G
BR -16 BRAKE SYSTEM

INSTALLATION E50AF6FE 4. Install the master cylinder.

1. Adjust push rod length of the booster, and then install 5. Connect the vacuum hose to the brake booster.
the seal on the booster assembly.
6. After filling the brake reservoir with brake fluid, bleed
Standard length (A): 108± 0.5 mm ( 4.25 ± 0.019 in.) the system.

7. Check for fluid leakage.

8. Check and adjust the brake pedal for proper opera-

tion.

KJQE050C

2. Insert the booster and tighten the nuts (C).

B
A

C
C
12.74~15.68 Nm
(130~160 kgf cm,
9.45~11.63 lb-ft)
EJRF500H

3. Connect the booster push rod and brake pedal with a

pin (B) and install a snap clevis pin (A) to the clevis
pin (B).

CAUTION
Grease the pin before installing the snap pin.
Always use a new snap pin.
BRAKE SYSTEM BR -17

BRAKE LINE

COMPONENT EFDAF8C6

Brake hose
to caliper
24.5~29.4
(250~300, 18.18~21.81)

Brake line to brake hose

12.74~16.66
(130~170, 9.45~12.36)

Disc brake :
Brake hose to caliper 24.5~29.4 (250~300, 18.18~21.81)
Bleeder screw 6.86~12.74 (70~130, 5.09~9.45)
Master cylinder Drum brake :
to brake line Brake line to wheel cylinder 12.74~16.66 (130~170, 9.45~12.36)
12.74~16.66 Bleeder screw 6.86~12.74 (70~130, 5.09~9.45)
(130~170, 9.45~12.36)
Air bleeder screw
6.86~12.74
(70~130, 5.09~9.45)

TORQUE : Nm (kgf cm, lb-ft)

EJRF500I
BR -18 BRAKE SYSTEM

REMOVAL EB13C0C5 INSTALLATION E654E9E8

1. Disconnect the brake hose(C) from the brake line(A) 1. Install a brake hose on the caliper with tightening
using a flare-nut wrench(B). brake hose bolt.

2. Install the bracket and the brake hose mounting bolt.

A
B

KJRE050A

2. Remove the bracket mounting bolt(A), and then re- EJRF500J

move the brake hose(B).

3. Connect the brake hose(A) to the brake line.

4. After installing the brake hose, bleed the brake sys-

tem.

KJRE050B

3. Remove the connector bolt from the caliper, and dis-

connect the brake hose from the caliper.
BRAKE SYSTEM BR -19

INSPECTION E0905EE1 2. Have someone slowly pump the brake pedal several
times, then apply pressure.
• Check the brake tubes for cracks, crimps and corro-
sion. 3. Lossen the right-rear brake bleed screw to allow air
• Check the brake hoses for cracks, damaged and oil to escape from the system. Then tighten the bleed
leakage. screw securely.
• Check the brake tube flare nuts for damage and oil
leakage. 4. Repeat the procedure for wheel in the sequence
shown below unit air bubbles no longer appear in the
fluid.
BRAKE SYSTEM BLEEDING E6D5B0DF
5. Refill the master cylinder reservoir to MAX(upper)
NOTE level line.

• Do not reuse the drained fluid.

• Always use Genuine DOT3 or DOT 4 Brake Fluid.
Using a non-Genuine DOT or 4 brake fluid can
cause corrosion and decrease the life of the sys-
tem.
Front Right Rear Right
• Make sure no dirt of other foreign matter is al-
lowed to contaminate the brake fluid.
• Do not spill brake fluid on the vehicle, it may dam-
age the paint; if brake fluid does contact the paint,
wash it off immediately with water.
• The reservoir on the master cylinder must be at
the MAX (upper) level mark at the start of bleed-
ing procedure and checked after bleeding each
Front Left Rear Left
brake caliper. Add fluid as required.

1. Make sure the brake fluid in the reservoir is at the MAX

(upper) level line (A).

EJKE003B

MAX

MIN

EJQE003A
BR -20 BRAKE SYSTEM

FRONT DISC BRAKE

6.86~12.74 Nm (70~130 kgf cm, 5.09~9.45 lb-ft)

EJRF500K

REAR DRUM BRAKE

EJRF500L
BRAKE SYSTEM BR -21

BRAKE PEDAL

COMPONENTS EE12FE0E

4
3

[A/T]

[M/T]

1. Member assembly bracket 4. Bushing

2. Return spring 5. Brake pedal
3. Stop lamp switch

EJRF500M
BR -22 BRAKE SYSTEM

COMPONENTS (ADJUSTABLE PEDAL)

5 4

1. Member assembly bracket 4. Stop lamp switch

2. Bushing 5. Shaft bolt
3. Return spring 6. Brake pedal

EJRF500N
BRAKE SYSTEM BR -23

REMOVAL ECDCEE5C INSTALLATION EE9A8E5E

1. Remove the lower crash pad.(Refer to BD-"crash 1. Installation is the reverse of removal.
pad")
CAUTION
2. Pull down steering column shaft after removing 4
bolts. Coat the inner surface of the bushings with the
specified grease.
3. Remove the stop lamp switch connector (A).
Specified grease : SAE J310
4. Remove the shift lock cable (A/T).
2. Before inserting the pin, apply the specified grease to
the joint pin.
A

KJQE010A

5. Remove the pin and snap pin.

EJQE008R

6. Loosen the brake pedal member assembly mounting

3. Install the snap pin.
nuts and then remove the brake pedal assembly.
4. Install the nuts with specified torque, when installing
the brake pedal.

TORQUE : Nm(kgf·cm,lb-ft); 12.74~15.68(130~160,

9.45~11.63)

5. Adjust the brake pedal height and free play.

6. Install the stop lamp switch.

BR -24 BRAKE SYSTEM

INSPECTION EE61AEE1

1. Check the bushing for wear.

2. Check the brake pedal for bending or twisting.

3. Check the brake pedal return spring for damage.

4. Check the stop lamp switch.

1) Connect a circuit tester to the connector of stop

lamp switch, and check whether or not there is
continuity when the plunger of the stop lamp
switch is pushed in and when it is released.

2) The stop lamp switch is in good condition if there

is no continuity when plunger(A) is pushed.

no continuity (3 mm (0.12 in))

A
continuity (4 mm (0.16 in))

EJRF500O
BRAKE SYSTEM BR -25

FRONT DISC BRAKE

COMPONENTS EAA0A1CD

21.56~31.36
(220~320, 15.99~23.26)

5
6

TORQUE: Nm (kgf cm, lb-ft)

1. Brake caliper 5. Indicator
2. Brake disc 6. Brake pads
3. Pad retainers 7. Brake pad shims
4. Guide rod bolt

EJRF500P
BR -26 BRAKE SYSTEM

21.56~31.36 (220~320, 15.99~23.26)

1
3
4 63.7~73.5
(650~750, 47.26~54.53)
2

5
6

10

9
8

11

7
12

13

15
14

TORQUE : Nm (kgf cm, lb-ft)

1. Guide rod bolt 6. Washer 11. Piston boot

2. Bleeder screw 7. Caliper bracket 12. Inner shim
3. Guide rod 8. Caliper body 13. Brake pad
4. Boot 9. Piston seal 14. Pad retainer
5. Caliper mounting bolt 10. Piston 15. Outer shim
EJRF500Q
BRAKE SYSTEM BR -27

REMOVAL EBFCF815 INSTALLATION EFDB65AB

CAUTION 1. Install the pad retainers (A) on the caliper bracket.

Frequent inhalation of brake pad dust, regardless

of material composition, could be hazardous to
your health.
• Avoid breathing dust particles.
• Never use on air hose or brush to clean brake
assemblies.

1. Lossen the front wheel nuts slightly. Raise the front of

the vehicle, and make sure it is securely supported.
Remove the front wheels.

2. Remove the guide rod bolt(B), After raise the caliper A

assembly(A), support it with a wire.

ARJE501M

2. Check the foreign material at the pad shims (A) and

the back of the pads (B).
Contaminated brake discs or pads reduce stopping
ability. Keep grease off the discs and pads.

C
B A
21.56~31.36 Nm
(220~320 kgf cm, 15.99~23.26 lb-ft)
EJRF500R
A
3. Remove pad shim(A), pad retainer(B) and pad as-
sembly(C) in the caliper bracket.

A
B

ARJE501N

A
C

C A

ARJE501L
BR -28 BRAKE SYSTEM

3. Install the brake pads (B) and pad shims (A) correctly.
Install the pad with the wear indicator (C) on the in-
side.
If you are reusing the pads, always reinstall the brake
pads in their original positions to prevent a momentary
loss of braking efficiency.

4. Push in the piston (A) so that the caliper will fit over the
pads. Make sure that the piston boot is in position to
prevent damaging it when pivoting the caliper down.

5. Pivot the caliper down into position. Being careful not

to damage the pin boot, install the guide rod bolt (B)
and torque it to proper specification.

B
21.56~31.36 Nm (220~320 kgf cm,
15.99~23.26 lb-ft)

A
EGGE700L

6. Depress the brake pedal several times to make sure

the brakes work, then test-drive.

NOTE
Engagement of the brake may require a greater pedal
stroke immediately after the brake pads have been
replaced as a set.Several applications of the brake will
EJRF500S
restore the normal pedal stroke.
Be sure to do this before driving the vehicle.
NOTE 7. After installation, check for leaks at hose and line
Insert the piston in the cylinder using the special tool joints or connections, and retighten if necessary.
(09581-11000).
BRAKE SYSTEM BR -29

INSPECTION E1355021 FRONT BRAKE PAD CHECK

FRONT BRAKE DISC THICKNESS CHECK 1. Check the pad wear. Measure the pad thickness and
replace it, if it is less than the specified value.
1. Remove all rust and contramination from the surface,
and measure the disc thickness at 8 points, at least, Pad thickness
of same distance (5 mm) front the brake disc outer Standard value : 11 mm (0.43 in.)
circle. Service limit : 2.0 mm (0.0787 in.)

Front brake disc thickness

Standard value : 26.0 mm(1.024 in.)
Limit : 24.4 mm(0.961 in.)

2. Thickness variation should not exceed 0.005 mm

(0.0002 in.) (circumference) and 0.01 mm ( in.)(ra-
dius) at any directions.

3. If wear exceeds the limit, replace the discs and pad

assembly left and right of the vehicle.

5 mm (0.2 in.)

KJQE088A

2. Check that grease is applied, to sliding contact points

and the pad and backing metal for damage.

EJRF502O
BR -30 BRAKE SYSTEM

FRONT BRAKE DISC RUN OUT CHECK SEIZE OF FRONT BRAKE DISC

1. Place a dial gauge about 5mm (0.2 in.) from the outer 1. Remove the brake disc from hub using M8 screw(A)
circumference of the brake disc, and measure the run if the brake disc has been seized with the hub due to
out of the disc. corrosion or overheat.

Brake disc run out NOTE

Limit : 0.04 mm (0.0016 in.) or less (new one)
Be careful not to use the hammer. The disc can be
damaged if you remove the disc from the hub by ham-
2. If the run out of the brake disc exceeds the limit spec- mer.
ification, replace the disc, and then measure the run
out again.

3. If the run out does not exceed the limit specification, A

install the brake disc after turning it 180 and then
check the run out of the brake disc again.

4. If the run out cannot be corrected by changing the

position of the brake disc, replace the brake disc.

5 mm (0.02 in.)

Disc
Hub
A

6 mm(0.24 in)
8 mm(0.3 in)

EJRF500T
EJRF502R
BRAKE SYSTEM BR -31

MASTER CYLINDER

COMPONENTS EE7F52A0

4
8

34.3 ~ 53.9 (350~550, 25.45~39.99)

[ABS]
10

[CBS]

TORQUE : Nm (Kgf cm, lb-ft)

1. Reservoir cap 6. Retainer

2. Brake fluid filter 7. Primary piston assembly
3. Reservoir 8. Secondary piston assembly
4. Grommet 9. Master cylinder body
5. Cylinder pin 10. Proportioning valve
EJRF500U
BR -32 BRAKE SYSTEM

REMOVAL ED2AAABE 3. Remove the brake fluid from the master cylinder
reservoir (C) with a syringe.
NOTE
4. Disconnect the brake lines (A) from the master cylin-
Do not spill brake fluid on the vehicle; it may damage der. To prevent spills, cover the hose joints with rags
the paint; if brake fluid does contact the paint, wash it or shop towels.
off immediately with water.

1. Remove air cleaner mounting bolts (B) from the air

cleaner mounting bracket and air cleaner body (A).

C
A
13.72~16.66 Nm
(140~170 kgf cm,
D 10.18~12.36 lb-ft) B
7.84~11.76 Nm
(80~120 kgf cm,
5.82~8.72 lb-ft)

EJRF500V

KJRE500W
5. Remove the master cylinder mounting nuts (B) and
2. Disconnect the brake fluid level switch connectors (A), washers.
and remove the reservoir cap (B).
6. Remove the master cylinder(C) from the brake
B
booster (D). Be careful not to bend or damage the
brake lines when removing the master cylinder.
C

ARJE500Y
BRAKE SYSTEM BR -33

INSTALLATION E4C7D3AC DISASSEMBLY EF6EA8AC

1. Install the master cylinder on the brake booster with 2 1. Remove the reservoir cap and drain the brake fluid
nuts. into a suitable container.

2. Connect 2 brake tubes and the brake fluid level sensor 2. Remove the fluid level sensor.
connector.
3. Remove the reservoir from the master cylinder, after
remove mounting screw (A).

C
A
13.72~16.66 Nm
(140~170 kgf cm,
D 10.18~12.36 lb-ft) B
7.84~11.76 Nm
(80~120 kgf cm,
5.82~8.72 lb-ft)

EJRF500V A

3. Fill the brake reservoir with the brake fluid and bleed
the brake system.
EGGE700D

4. Remove the proportioning valves (A) - CBS only.

EJRF500W
BR -34 BRAKE SYSTEM

5. Remove the retainer ring by using the snap ring pliers INSPECTION E47CBB11

then remove the primary piston assembly.

1. Check the master cylinder bore for rust or scratch.

2. Check the master cylinder for wear or damage. If

necessary, clean or replace the cylinder.

CAUTION
• If the cylinder bore is damaged, replace the
master cylinder assembly.
• Wash the contaminated parts in alcohol.

REASSEMBLY E2A58FE6

1. Apply genuine brake fluid to the rubber parts of the

cylinder kit and grommets.
EJA9009C
2. Carefully insert the springs and pistons in the proper
6. Remove the pin with the secondary piston pushed direction.
completely using a screwdriver. Remove the sec-
ondary piston assembly.

KFW8016A

3. Press the piston with a screwdriver and install the

cylinder pin.

KJQE014B

NOTE
Do not disassemble the primary and secondary piston
assembly.

EGGE700F
BRAKE SYSTEM BR -35

4. Press the piston with a screwdriver and install the re-

tainer ring.

EGGE700G

5. Mount two grommets.

6. Install the reservoir on the cylinder.

BR -36 BRAKE SYSTEM

PROPORTIONING VALVE 3. With the brake applied, measure the front pressure
and the rear pressure.
If the measured pressures are within the specified
DESCRIPTION E7D9C04E
range as illustrated, the proportioning valve is good.

Do not disassemble the proportioning valve. The propor-

tioning valve makes the ideal distribution of fluid pressure
to the front and rear brakes to prevent the brakes from
skidding in the event of rear wheel lock up and to obtain
a higher brake efficiency within the range of service brake

OUTPUT PRESSURE (kgf/cm2)

application.

INSPECTION EFA58D2B

B’
1. Remove the front brake tube (B) and rear brake tube
(C) from the master cylinder (A). A’

2. Connect two pressure gauges (D); one to the output

valve of the front (B) and rear (C) brake.
A B

INPUT PRESSURE (kgf/cm2)

D
EJRF500Y

4. Reconnect the brake lines in their original positions

and bleed the system.

B
NOTE
C This table shows characteristics of the proportioning
valve as the pressure increases.
A
Input Pressure Output Pressure
A : 35 kg/cm² A’ : 35 kg/cm²
B : 80 kg/cm² B’ : 49.4 kg/cm²
EJRF500X

NOTE
Be sure to bleed the system after connecting the pres-
sure gauges.
BRAKE SYSTEM BR -37

REAR DISC BRAKE

COMPONENTS EA4DDEDD

6.86~12.74 (70~130, 5.09~9.45)

1 2
78.4~98 (800~1,000, 58.16~72.7)
3
4

5
9
6
8 10
7

11

21.56~31.36
(220~320, 15.99~23.26) 12
3

4
13

14
8

15

TORQUE : Nm (kgf cm, lb-ft)

1. Bleeder screw 6. Piston seal 11. Guide rod bolt
2. Caliper body 7. Piston boot 12. Inner shim
3. Guide rod 8. Pad retainer 13. Brake Pad
4. Boot 9. Caliper mounting bolt 14. Outer shim
5. Piston 10. Washer 15. Caliper bracket
EJRF500Z
BR -38 BRAKE SYSTEM

REMOVAL ECB86F4F INSTALLATION EDC5ADC4

1. Raise the rear of the vehicle and make sure it is se- 1. Install the pad retainers(A) on the caliper bracket.
curely supported. Remove the rear wheel.

2. Remove the guide rod bolt(B), After raise the caliper

assembly(A), support it with a wire.

ARJE501M

B
2. Check the foreign material at the pad shim (A) and the
back of the pads (B).
ARJE501U

3. Remove pad shim(A), pad retainer(B) and pad as-

sembly(C) in the caliper bracket.

A
B
A
ARJE501N
C

C A
3. Contaminated brake discs or pads reduce stopping
ability. Keep grease off the discs and pads.
ARJE501V
4. Install the brake pads (B) and pad shims (A) correctly.
Install the pad with the wear indicator (C) on the in-
side.
If you are reusing the pads, always reinstall the brake
pads in their original position to prevent a momentary
loss of braking efficiency.

5. Push in the piston (A) so that the caliper will fit over the
pads. Make sure that the piston boot is in position to
prevent damaging it when pivoting the caliper down.
BRAKE SYSTEM BR -39

6. Pivot caliper down into position. Being careful not to INSPECTION EAE7DA7F

damage the pin boot, install the guide rod bolt (B) and
torque it to proper specification REAR BRAKE DISC THICKNESS CHECK

B 1. Remove all rust and contamination from the disc sur-

21.56~31.36 Nm (220~320 kgf cm, face, and then measure the disc thickness at 8 points,
15.99~23.26 lb-ft) al least, of the same distance (5mm) from the brake
A disk outer circle.

Rear brake disc thickness

Standard value : 10.0 mm (0.39 in.)
Limit : 8.0 mm (0.315 in.)

2. Thickness variation should not exceed

0.01 mm(0.0004 in.) (circumference) and
0.01 mm(0.0004 in.) (radius) at any directions.

3. If wear exceeds the limit, replace the discs and pad

EJRF501A assembly for left and right of the vehicle.

NOTE
5mm (0.2 in.)
Insert the piston in the cylinder using the special
tool(09581-11000).

EJRF502Q

EGGE700L

7. Depress the brake pedal several time to make sure

the brakes work, then test-drive.

NOTE
Engagement of the brake may require a greater pedal
stroke immediately after the brake pads have been
replaced as a set. Several applications of the brake
will restore the normal pedal stroke.

8. After installaion, check for leaks at hose and line joints

or connections, and retighten if necessary.
BR -40 BRAKE SYSTEM

REAR BRAKE PAD CHECK REAR BRAKE DISC RUN OUT CHECK

1. Check the pad wear. Measure the pad thickness and 1. Place a dial gauge about 5 mm (0.2 in.) from the outer
replace it, if it is less than the specified value. circumference of the brake disc, and measure the run
out of the disc.
Pad thickness
Standard value : 10.0 mm ( 0.39 in.) Brake disc run out
Service limit : 2.0 mm (0.0787 in.) Limit : 0.05 mm (0.002 in.) or less (new one)

KJQE088A KJQE100E

2. Check that grease is applied, and the pad and backing 2. If the run out of the brake disc exceeds the limit spec-
metal for damage. ification, replace the disc, and then measure the run
out again.

3. If the run out does not exceed the limit specification,

install the brake disc after turning it 180 and then
check the run out of the brake disc again.

4. If the run out cannot be corrected by changing the

position of the brake disc, replace the brake disc.
BRAKE SYSTEM BR -41

SEIZE OF REAR BRAKE DISC

1. Remove the brake disc from hub using M8 screw(A)

if the brake disc has been seized with the hub due to
corrosion or overheat.

NOTE
Be careful not to use the hammer. The disc can be
damaged if you remove the disc from the hub by ham-
mer.

Disc
Hub
A

6 mm(0.24 in)
8 mm(0.3 in)

EJRF502R
BR -42 BRAKE SYSTEM

REAR DRUM BRAKE

COMPONENTS E04DCF1B

4.9~10.78 (50~110, 3.64~8) 6.86~12.74 (70~130, 5.09~9.45)

2
3
6
5

4 7
8

10

11
12

13

TORQUE : Nm (Kgf cm, lb-ft)

1. Shoe hold down pin 8. Cup washer
2. Bleeder screw 9. Brake drum
3. Wheel cylinder 10. Rear hub
4. Shoe adjuster lever 11. Rear brake backing plate
5. Shoe adjuster 12. Upper shoe return spring
6. Shoe & lining assembly 13. Lower shoe return spring
7. Shoe hold down spring
EJRF501B
BRAKE SYSTEM BR -43

REMOVAL EBBBD1A2 6. Remove shoe adjuster (B) and lever (C) from the
brake shoes.
CAUTION
A A
Frequent inhalation of brake pad dust, regardless B
of material composition, could be hazardous to C
your health.
• Avoid breathing dust particles.
• Never use an air hose or brush to clean brake
assemblies.

1. Remove the shoe hold down pins (B) by pushing the

shoe hold cup washer (C) and turning them.

2. Disengage the upper return spring (A).

A
ARJE502H

B
7. Disconnect the brake tube (A) from the wheel cylinder.
C
8. Remove the bolt (C) and the wheel cylinder from the
backing plate(D).
B

C
A
D
12.74~16.66 Nm
EGGE700T
(130~170 kgf cm,
9.45~12.36 lb-ft)
3. Remove the lower shoe return spring (B) as removing
the brake shoe assembly(A). Make sure not to dam-
age the dust cover on the wheel cylinder.
C
4. Disconnect the parking brake cable from the parking 4.9~10.78 Nm
B (50~110 kgf cm,
brake lever. 3.64~8 lb-ft)

5. Remove the brake shoe assembly. EJRF501C

BR -44 BRAKE SYSTEM

INSTALLATION E70DA3AC 5. Hook the shoe adjuster then install to the brake shoe.

NOTE 6. Install the shoe adjuster assembly and upper return

spring (D), noting the installation direction. Be careful
• Do not spill brake fluid on the vehicle: it may dam- not to damage the wheel cylinder dust covers.
age the paint; if brake fluid does contact the paint.
Wash it off immediately with water.
7. Install the lower return spring (E).
• To prevent spills, cover the hose joints with rags
or shop towels.
• Use only a genuine wheel cylinder special bolt. 8. Grease brake cylinder to the sliding surfaces as
shown below. Wipe off any excess. Don’t get grease
on the brake linings.
1. Apply sealant (C) between the wheel cylinder (A) and
backing plate (B), and install the wheel cylinder.

C
Sliding surface

D
B
12.74~16.66 Nm
(130~170 kgf cm,
9.45~12.36 lb-ft)

4.9~10.78 Nm
(50~110 kgf cm,
A 3.64~8 lb-ft)

EJRF501D

2. Connect the brake tubes (D) to the wheel cylinder.

EGGE700V
3. Connect the parking brake cable to the parking brake
lever.
9. Grease brake cylinder to the brake shoe ends and
4. Clean the threaded portions of adjuster sleeve (A) and opposite edges of the as shoes as shown below.
push rod female (B). Grease the threads of the ad- Wipe off any excess. Don’t get grease on the brake
juster assembly,turn the adjuster bolt (C), adjusting linings.
the length of the shoe adjuster assembly.

C
Opposite edge of the shoe
B
Brake shoe ends
(shoe side ends and backing
plate contact surface)

LJIF501Y EGGE700W
BRAKE SYSTEM BR -45

10. Grease brake shoes (A) onto the backing plate. Be INSPECTION EC923F30

careful not to damage the wheel cylinder dust covers.

CAUTION
11. Install the shoe hold down pins (B), shoe hold down
spring and the shoe hold down cup (C). Frequent inhalation of brake pad dust, regardless
of material composition, could be hazardous to
your health.
• Avoid breathing dust particles.
• Never use an air hose or brush to clean brake
assemblies.
A
D
B NOTE
A
• Contaminated brake linings or drums reduce
stopping ability.
C • Block the front wheels before jacking up the rear
of the vehicle.

1. Raise the rear of the vehicle, and make sure it is se-

B curely supported.

C 2. Release the parking brake, and remove the rear brake

drum.

3. Check the wheel cylinder (A) for leakage.

EJKE803F
4. Check the brake linings (B) for cracking, glazing, wear,
and contamination.
12. Install the brake drum.
5. Measure the brake lining thickness (C).
13. Bleed the brake system,after refilling the brake fluid. Measurement does not include brake shoe thickness.
14. Depress the brake pedal several times to set the self-
adjusting brake. Brake lining thickness
Standard : 4.5 mm (0.177 in.)
15. Adjust the parking brake. Service limit : 1.0 mm (0.039 in.)

EGGE700R
BR -46 BRAKE SYSTEM

6. If the brake lining thickness is less than the service

limit, replace the brake shoes as a set.

7. Check the bearings in the hub unit for smooth opera-

tion. If it requires servicing, replace it.

8. Measure the inside diameter of the brake drum with

inside vernier calipers.

Drum inside diameter:

Standard : 228.6 mm (9 in.)
Service limit : 230.6 mm (9.079 in.)
Drum roundness
Service limit : 0.06 mm (0.00236 in.)

EGGE700S

9. If the inside diameter of the brake drum is more than

the service limit, replace the brake drum.

10. Check the brake drum for scoring, grooves, and

cracks.
PARKING BRAKE SYSTEM BR -47

PARKING BRAKE SYSTEM

PARKING BRAKE

COMPONENTS EBD134D3

6
7

8
5

13 10

11
12

1. Rear brake caliper 6. Operating lever 11. Cup washer

2. Parking brake lever 7. Strut 12. Shoe hold down spring
3. Parking brake switch 8. Upper spring 13. Shoe hold down pin
4. Parking brake cable 9. Lower spring
5. Backing plate 10. Adjuster
EJRF501E
BR -48 BRAKE SYSTEM

REMOVAL ED2E63F7 4. Remove the bolts and parking brake lever assem-
bly(A).
NOTE
5. Remove the wheel and tire.
The parking brake cables must not be bent or dis-
torted. 6. Remove the brake disc and the brake shoe (Refer to
This will lead to stiff operation and premature failure. the rear disc brake).

1. Remove the floor console. 7. Remove the parking brake hook(A).

2. Loosen the adjusting nut (A) and remove the parking

brake cables.

A
A

KJRE502V

8. Remove the parking brake cable assembly.

EJKE002D

3. Disconnect the connector(A) of the parking brake

switch connector.

EGGE700X
PARKING BRAKE SYSTEM BR -49

INSTALLATION E445CBA2 INSPECTION EE4EA48E

1. Install the removed parts in the reverse order of re- 1. Pull the parking brake lever (A) with 196 N (20 kgf, 44
moval. lb) force to fully apply the parking brake. The park-
ing brake lever should be locked within the specified
2. Apply the specified grease to each sliding parts of the number of clicks.
ratchet plate or the ratchet pawl.
Lever locked clicks:7
Specified grease :
Multi purpose grease SAE J310, NLGI No.2
Pulled up with 196 N (20 kgf, 44 lb)

3. After installing the parking brake cable adjuster, adjust

the parking brake lever stroke (Refer to the parking
A
brake check and adjustment).

EJRF501F

2. Adjust the parking brake if the lever clicks are out of

specification.
BR -50 BRAKE SYSTEM

ADJUSTMENT EE4EA49E 4. Tighten the adjusting nut (A) until the parking brakes
are dragged slightly when the rear wheels are turned.
NOTE
After rear brake caliper servicing, loosen the park-
ing brake adjusting nut, start the engine and depress
the brake pedal several times to set the self-adjusting
brake before adjusting the parking brake.

1. Block the front wheels, then raise the rear of the vehi-
A
cle and make sure it is securely supported.

2. Pull the parking brake lever up one click.

EJKE002D

5. Release the parking brake lever completely, and

check if parking brakes are not dragged when the
rear wheels are turned. Readjust if necessary.

6. Make sure that the parking brakes are fully applied

when the parking brake lever is pulled up completly.

7. Reinstall the floor console.

EJKE002C

3. Remove the floor console.

PARKING BRAKE SYSTEM BR -51

PARKING BRAKE SWITCH

INSPECTION ED3E4A76

1. Remove the floor console and the connector(B) from

the switch(A).

B A
KJRE501C

2. Inspect the continuity between (-) terminal and the

ground.
• When the brake lever is pulled, there should be
the continuity between them.
• When the brake lever is released, there should
be no continuity between them.
BR -52 BRAKE SYSTEM

ABS (ANTI-LOCK BRAKE

SYSTEM)
COMPONENTS E7ECFFCA

3 4

1. Front left wheel speed sensor 4. Hydrauric line

2. ABS control module(HECU) 5. Rear right wheel speed sensor
3. Front right wheel speed sensor 6. Rear left wheel speed sensor

EJRF501G
ABS (ANTI-LOCK BRAKE SYSTEM) BR -53

DESCRIPTION E87D629D VOLTAGE LIMITS

This specification applies to HCU(Hydraulic Control Unit) - Overvoltage

and ECU(Electronic Control Unit) of the HECU.(Hydraulic When overvoltage is detected(above 16V), the ECU
and Electronic Control Unit) switches off the valve relay and shuts down the sys-
This specification is for the wiring design and installation tem.
of ABS/TCS/ESP ECU. When voltage is returned to operating range, the sys-
This unit has the functions as follows. tem goes back to the normal condition after the initial-
- Input of signal from Pressure sensor, Steering angle ization phase.
sensor, Yaw Lateral G sensor, the wheel speed - Undervoltage
sensors attached to each wheel. In the event of undervoltage(below 10V), ABS con-
- Control of braking force / traction force/ yaw moment. trol shall be inhibited and the warning lamp shall be
- Failsafe function. turned on.
- Self diagnosis function. When voltage is returned to operating range, the
- Interface with the external diagnosis tester. warning lamp is switched off and ECU returns to
normal operating mode.
Installation position : engine compartment
- Brake tube length from Master cylinder port to HECU PUMP MOTOR CHECKING
inlet port should be max. 1m
The ECU performs a pump motor test at a speed of 12km/h
- The position should not be close to the engine block
once after IGN is switched on.
and not lower than the wheel.
DIAGNOSTIC INTERFACE
OPERATION
Failures detected by the ECU are encoded on the ECU,
The ECU shall be put into operation by switching on the stored in a EEPROM and read out by diagnostic equip-
operating voltage (IGN). ment when the ignition switch is turned on.
On completion of the initialization phase, the ECU shall be The diagnosis interface can also be used for testing the
ready for operation. ECU during production of the ECU and for actuating the
In the operating condition, the ECU shall be ready, within HCU in the test line of manufactories (Air-bleeding line or
the specified limits (voltage and temperature), to process Roll and Brake Test line).
the signals offered by the various sensors and switches in
accordance with the control algorithm defined by the soft-
ware 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 pos-

itive voltage that is provided through the valve relay and
the other side is connected to the ground by the semicon-
ductor 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.
BR -54 BRAKE SYSTEM

WARNING LAMP MODULE

ABS Warning lamp

Parking/EBD Warning lamp

EJRF501I

1. ABS WARNING LAMP MODULE

The active ABS warning lamp module indicates the
selftest and failure status of the ABS.The ABS warn-
ing lamp shall be on:
- During the initialization phase after IGN ON.
(continuously 3 seconds).
- In the event of inhibition of ABS functions by fail-
ure.
- During diagnostic mode.
- When the ECU Connector is seperated from
ECU.

2. PARKING/EBD WARNING LAMP MODULE

The active EBD warning lamp module indicates the
selftest and failure status of the EBD.However, in case
the Parking Brake Switch is turned on, the EBD warn-
ing lamp is always turned on regardless of EBD func-
tions.The EBD warning lamp shall be on:
- During the initialization phase after IGN ON.
(continuously 3 seconds).
- When the Parking Brake Switch is ON or brake
fluid level is low.
- When the EBD function is out of order.
- During diagnostic mode.
- When the ECU Connector is seperated from
ECU.
ABS (ANTI-LOCK BRAKE SYSTEM) BR -55

ABS CONTROL EFC9BCEA

1. NORMAL BRAKING without ABS

Inlet valve(EV) Outlet valve(AV) Pump motor

Operation Open Close OFF

EV EV EV EV

P MC P MC

PE PE

P AP
ACC M ACC
P AP

AV AV AV AV

LR RF LF RR

KJRE501E
BR -56 BRAKE SYSTEM

2. DECREASE MODE

Inlet valve(EV) Outlet valve(AV) Pump motor

Operation Close Open ON(Motor speed control)

EV EV EV EV

P MC P MC

PE PE
ACC
P AP
ACC M P AP

AV AV AV AV

LR RF LF RR

KJRE501F
ABS (ANTI-LOCK BRAKE SYSTEM) BR -57

3. HOLD MODE

Inlet valve(EV) Outlet valve(AV) Pump motor

Operation Close Close OFF

EV EV EV EV

P MC P MC

PE PE

P AP
ACC M ACC
P AP

AV AV AV AV

LR RF LF RR

KJRE501G
BR -58 BRAKE SYSTEM

4. INCREASE MODE

Inlet valve(EV) Outlet valve(AV) Pump motor

Operation Open Close OFF

EV EV EV EV

P MC P MC

PE PE

P AP
ACC M ACC
P AP

AV AV AV AV

LR RF LF RR

KJRE501H
BR -59

EJRF502S
HOT IN ON OR START HOT AT ALL TIMES
See Power PASSENGER ENGINE
Distribution COMPARTMENT COMPARTMENT
JUNCTION JUNCTION
FUSE 27 BLOCK BLOCK
STOP
10A PHOTO 32 FUSE 15A PHOTO 7
8 I/P-A 22 JE02
0.3P
1.25L
1 M81
See Passenger JOINT 2 4 E62
Compartmnet Fuse Details CONNECTOR STOP LAMP
PHOTO 58 A B SWITCH A : Closed with brake
See Stop
3 M81 Lamps pedal depressed
PHOTO 39
0.3P B : Open with brake
1 M08-3 pedal depressed
INSTRUMENT 1 3 E62
BRAKE CLUSTER
ABS 1.25G
WARNING PHOTO 35
( ! )( P ) 10 E57
( ABS ) JOINT
EBD BRAKE See Stop CONNECTOR
See Data Link Details Lamps
PHOTO 61
12 11 M08-2
3 E57
0.3P 0.3Br
28 29 EM01 PHOTO 63
0.5W 0.5Y 0.5G
0.5P 0.5Br
22 12 26 15 20 E22
ABS
ABS CONTROL
ABS EBD CAN(HIGH) CAN(LOW) Stop lamp MODULE
warning warning switch UNIT
lamp lamp PHOTO 24
FL SIG FL VCC FR SIG FR VCC RL SIG RL VCC RR SIG RR VCC
ABS (ANTI-LOCK BRAKE SYSTEM)

E9B2028F

5 16 10 9 17 6 19 8 E22
0.5G 0.5O 0.5O 0.5W PHOTO 63
1 2 3 4 EM02
0.5B 0.5Y 0.5R 0.5L 0.3G/O 0.3O 0.3L/B 0.3W
ABS CIRCUIT DIAGRAM(1)

7 8 5 6 MF11
0.3G/O 0.3O 0.3L/B 0.3W PHOTO 63
2 1 E45 2 1 E49
1 2 F25 1 2 F26
LEFT FRONT RIGHT FRONT LEFT REAR RIGHT REAR
WHEEL SENSOR WHEEL SENSOR WHEEL SENSOR WHEEL SENSOR
PHOTO 1 PHOTO 5 PHOTO 82 PHOTO 82
 EJRF502T
BRAKE SYSTEM

HOT IN ON OR START HOT AT ALL TIMES

ENGINE
See Power COMPARTMENT
Distribution JUNCTION
BLOCK
ABS.1 ABS.2
ABS FUSIBLE FUSIBLE PHOTO 7
FUSE LINK 40A LINK 20A
PHOTO 25 10A
MULTIPURPOSE
CHECK CONNECTOR
15 E20 62 61 66 JE02
PHOTO 31
0.5G DATA LINK
CONNECTOR
34 EM02 PHOTO 63
1 M05
0.5G 0.75G 0.5P 3.0W 2.0R
37 EM02 21 EM01 PHOTO 63
0.75G 0.5L
18 11 2 3 E22
ABS
CONTROL
MODULE
PHOTO 24
Diagnosis Vbatt VR- ABS
motor relay actuation UNIT
+ECU
Motor HR- Valve
Ground monitoring actuation Moniitoring
C1
MOTOR 2A 2B 4A 4B 3A 3B 1A 1B VALVE
RELAY VALVE RELAY BLOCK
T2 T1 T0 D0
IN OUT IN OUT IN OUT IN OUT
RR RL FR FL
M
ABS CIRCUIT DIAGRAM(2)

4 1 E22
2.0B 3.0B
G11 PHOTO 24
BR -60
ABS (ANTI-LOCK BRAKE SYSTEM) BR -61

HECU CONNECTOR
INPUT/OUTPUT(ABS) E3E3DCA2

15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
26 25 24 23 22 21 20 19 18 17 16

KJRE502O

Current max.permissible min.leakage

Wire No. Designation wire resistance resistance
max min R_L (m ) R_P (k )
1 Ground for recirculation pump 20~39 A 10 A 10
Ground for solenoid valves
4 5~15 A 2.5 A 10
and ECU
2 Voltage supply for pump motor 20~39 A 10 A 10 200
3 Voltage supply for solenoid valves 5~15 A 2 A 10 200
18 Voltage for hybrid ECU 1 A 500 mA 60 200
signal wheel speed sensor 200 to ground
5,10,17,19 6 mA 16 mA 250
FL, FR, RL,RR 1.5M to bat
Voltage supply for the active
200 to ground
16,9,6,8 wheel speed sensor FL,FR, 6 mA 16 mA 250
1.5M to bat
RL, RR
wheel speed sensor output
14,24 20 mA 10 mA 250 200
(FR, RL)
11 Diagnostic wire K 6 mA 3 mA 250 200
22 ABS-warning lamp actuation 30 mA 5 mA 250 200
12 EBD-warning lamp actuation 30 mA 5 mA 250 200
20 brake light switch 10 mA 5 mA 250 200
BR -62 BRAKE SYSTEM

ABS HECU CONNECTOR

Connector terminal
Specification Condition
Number Description
Current range: Min.10A
1 Ground for recirculation pump Always
Max.20~39A
Ground for solenoid valves Current range: Min.2.5A
4 Always
and ECU Max.5~15A
2 Voltage supply for pump motor
Battery voltage Always
3 Voltage supply for solenoid valves
16
9 Voltage supply for the active wheel
Battery voltage IG ON
6 speed sensor FL,FR, RL, RR
8
5
10 signal wheel speed sensor Voltage(High) : 0.89~1.26 V
On driving
17 FL, FR, RL,RR Voltage (Low) : 0.44~0.63 V
19

Voltage (High) 0.8 * IG ON On HI-SCAN commu-

11 Diagnostic wire K
Voltage (Low) 0.2 * IG ON nication
18 Voltage for hybrid ECU Battery voltage KEY ON/OFF

20 Brake light switch Voltage (High) 0.8 * IG ON BRAKE ON/OFF

Voltage (Low) 0.3 * IG ON
ABS (ANTI-LOCK BRAKE SYSTEM) BR -63

SENSOR OUTPUT ON HI-SCAN(ABS)

Description Abbreviation Unit Remarks

1 Vehicle speed sensor VEH. SPD Km/h
2 Battery voltage BATT. VOL V
3 FL Wheel speed sensor FL WHEEL Km/h
4 FR Wheel speed sensor FR WHEEL Km/h
5 RL Wheel speed sensor RL WHEEL Km/h
6 RR Wheel speed sensor RR WHEEL Km/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 -
BR -64 BRAKE SYSTEM

HI-SCAN (PRO) CHECK EAD7B9E7

1. Turn the ignition switch OFF.

2. Connector the Hi-scan(pro) to the 16P data link con-

nector located the driver’s side kick panel.

GROUND ABS

8 7 6 5 4 3 2 1

16 15 14 13 12 11 10 9

Memory power

EJRF502M

3. Turn the ignition switch ON.

4. Check for diagnostic trouble using the Hi-scan(pro)

5. After completion trouble of the repair or correction of

the problem, erase the stored fault codes the clear key
on the Hi-scan(pro).

6. Disconnect the Hi-scan(pro) from the 16P data link

connector.
ABS (ANTI-LOCK BRAKE SYSTEM) BR -65

STANDARD FLOW OF DIAGNSTIC

TROUBLESHOOTING

Gathering information from customer

Reoccurs Does not reoccur

Check diagnostic code Check diagnostic code

No trouble code Trouble code displayed Trouble code No trouble
displayed code
Recheck trouble code(s) then erase

Basic brake system is normal or not Recheck trouble symptom

Abnormal Normal
No trouble
code
Refer to BR-Troubleshooting Check trouble codes
Trouble code displayed

Problem is intermittent or was Inspection chart for diagnostic trouble

repaired and memory was not cleared. codes Intermittent malfunction

* Using the customer problem analysis check sheet for reference, ask the customer as much detail as
possible about the problem.
EJKB055A

NOTES WITH REGARD TO DIAGNOSIS

The phenomena listed in the following table are not abnor-

mal.

Phenomenon Explanation
System check sound When starting the engine, a thudding sound can sometimes
be heard coming from inside the engine compartment. This is
because the system operation check is being performed.
ABS operation sound 1. Sound of the motor inside the ABS hydraulic
unit operation (whine).
2. Sound is generated along with vibration of the
brake pedal (scraping).
3. When ABS operates, sound is generated from the vehicle
chassis due to repeated brake application and release
(Thump : suspension; squeak: tires)
ABS operation (Long braking distance) For road surfaces such as snow-covered and gravel
roads, the braking distance for vehicles with ABS
can sometimes be longer than that for other vehicles.
Accordingly, advise the customer to drive safely on such
roads by lowering the vehicle speed.
Diagnosis detection conditions can vary depending on the diagnosis code. When checking the trouble symptom
after the diagnosis code has been erased, ensure that the requirements listed in "Comment" are met.
BR -66 BRAKE SYSTEM

ABS CHECK SHEET

Inspector's
ABS Check Sheet Name

Registration No.

Customer's Name Registration Year

VIN.

Date Vehicle Km
Odometer
Brought In Miles

Date the Problem First Occurred

Frequency of Occurence of Problem Continuous Intermittent ( times a day)

ABS does not operate.

Symptoms ABS does not operate efficiently. Intermittent ( times a day)

ABS Warning
Light Abnormal Remains ON Does not light up

Diagnostic 1st Time Normal Code Malfunction Code (Code )

Trouble Code
Check 2nd Time Normal Code Malfunction Code (Code )

EJDA017A
ABS (ANTI-LOCK BRAKE SYSTEM) BR -67

PROBLEM SYMPTOMS TABLE

If a normal code is displayed during the DTC check but the

problem still occurs, check the circuits for each problem
symptom in the order given in the table below and proceed
to the relevant troubleshooting page.

See
Symptom Suspect Area
page
ABS does not operate. Only when 1. -4. are all normal and the problem
is still occurring, replace the HECU.
1. Check the DTC reconfirming that the normal
code is output. BR - 68
2. Power source circuit.
3. Speed sensor circuit.
4. Check the hydraulic circuit for leakage.
ABS does not operate intermittently. Only when 1. -4. are all normal and the problem is still
occurring, replace the ABS actuator assembly.
1. Check the DTC reconfirming that the normal
code is output. BR - 70
2. Wheel speed sensor circuit.
3. Stop lamp switch circuit.
4. Check the hydraulic circuit for leakage.
Communication with Hi-scan (pro) 1. Power source circuit
is not possible. 2. Diagnosis line
BR - 71
(Communication with any system is
not possible)
Communication with Hi-scan (pro) 1. Power source circuit
is not possible. 2. Diagnosis line BR - 72
(Communication with ABS only is not possible) 3. HECU
When ignition key is turned ON (engine OFF), 1. ABS warning lamp circuit
BR - 73
the ABS warning lamp does not light up. 2. HECU
Even after the engine is started, the ABS 1. ABS warning lamp circuit
BR - 74
warning lamp remains ON. 2. HECU

CAUTION
During ABS operation, the brake pedal may vi-
brate or may not be able to be depressed. Such
phenomena are due to intermittent changes in hy-
draulic pressure inside the brake line to prevent
the wheels from locking and is not an abnormal-
ity.
BR -68 BRAKE SYSTEM

ABS Does Not Operate

DETECTING CONDITION

Trouble Symptoms Possible Cause

Brake operation varies depending on driving conditions and road - Faulty power source circuit
surface conditions, so diagnosis can be difficult.However if a normal - Faulty wheel speed sensor circuit
DTC is displayed, check the following probable cause. When the - Faulty hydraulic circuit for leakage
problem is still occurring, replace the ABS control module. - Faulty HECU

INSPECTION PROCEDURES NO
DTC INSPECTION
Check the harness or connector between the fuse
1. Connect the Hi-Scan (pro) with the data link connector (10A) in the engine compartment junction block and
and turn the ignition switch ON. the ABS control module. Repair if necessary.

2. Verify that the normal code is output.

Is the normal code output? ON
(+) (-)
NO
18
Check the power source circuit.

YES 15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
26 25 24 23 22 21 20 19 18 17 16
Erase the DTC and recheck using Hi-Scan (pro).

CHECK THE POWER SOURCE CIRCUIT.

KJRE500H

1. Disconnect the connector from the ABS control mod-

CHECK THE GROUND CIRCUIT.
ule.
1. Disconnect the connector from the ABS control mod-
2. Turn the ignition switch ON, measure the voltage be-
ule.
tween terminal 18 of the ABS control module harness
side connector and body ground. 2. Check for continuity between terminals 1,4 of the ABS
control module harness side connector and ground
Specification: approximately B+ point.
Is there continuity?
Is the voltage within specification?
YES
YES
Check the wheel speed sensor circuit.
Check the ground circuit.
NO

Repair an open in the wire and ground point.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -69

15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
26 25 24 23 22 21 20 19 18 17 16

4 1
KJRE501D

CHECK THE WHEEL SPEED SENSOR CIRCUIT.

Refer to the DTC troubleshooting procedures.

Is it normal?

YES

Check the hydraulic circuit for leakage.

NO

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 it normal?

YES

The problem is still occurring, replace the ABS control

module.

NO

Repair the hydraulic lines for leakage.

BR -70 BRAKE SYSTEM

ABS Does Not Operate Intermittently.

DETECTING CONDITION

Trouble Symptoms Possible Cause

Brake operation varies depending on driving conditions and road - Faulty power source circuit
surface conditions, so diagnosis can be difficult.However if a normal - Faulty wheel speed sensor circuit
DTC is displayed, check the following probable cause. When the - Faulty hydraulic circuit for leakage
problem is still occurring, replace the ABS control module. - Faulty HECU

INSPECTION PROCEDURES Check the hydraulic circuit for leakage.

DTC INSPECTION NO
1. Connect the Hi-Scan (pro) with the data link connector
Repair the stop lamp switch. Repair an open in the
and turn the ignition switch ON.
wire between the ABS control module and the stop
2. Verify that the normal code is output. lamp switch.
Is the normal code output?
(-) (+)
NO

Check the wheel speed sensor circuit.

YES

Erase the DTC and recheck using Hi-Scan (pro). 15 14 13 12 11 10 9 8 7 6 5

4 3 2 1
26 25 24 23 22 21 20 19 18 17 16
CHECK THE WHEEL SPEED SENSOR CIRCUIT.
20
Refer to the DTC troubleshooting procedures.
KJRE501I
Is it normal?
CHECK THE HYDRAULIC CIRCUIT FOR LEAKAGE.
YES
Refer to the hydraulic lines.
Check the stop lamp switch circuit. Inspect leakage of the hydraulic lines.
Is it normal?

YES
NO The problem is still occurring, replace the ABS control
module.
Repair or replace the wheel speed sensor.
NO
CHECK THE STOP LAMP SWITCH CIRCUIT.

1. Check that stop lamp lights up when brake pedal is Repair the hydraulic lines for leakage.
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?

YES
ABS (ANTI-LOCK BRAKE SYSTEM) BR -71

Communication With Hi-Scan (pro) Is Not Possible.

(Communication With Any System Is Not Possible)

DETECTING CONDITION

Trouble Symptoms Possible Cause

Possible defect in the power supply system (including - An open in the wire
ground) for the diagnosis line. - Poor ground
- Faulty power source circuit

INSPECTION PROCEDURES CHECK THE GROUND CIRCUIT FOR THE

DIAGNOSIS
CHECK THE POWER SUPPLY CIRCUIT FOR THE DI-
AGNOSIS Check for continuity between terminal 5 of the data link
Measure the voltage between terminal 9 of the data link connector and body ground.
connector and body ground. Is there continuity?

Specification: approximately B+ NO

Repair an open in the wire between terminal 5 of the

Is voltage within specification?
data link connector and ground point.
YES

Check the ground circuit for the diagnosis.

NO
5
Repair an open in the wire. Check and replace fuse
(15A) from the engine compartment junction block.

(-) (+)

KJQE900E

KJQE900D
BR -72 BRAKE SYSTEM

Communication With Hi-Scan (pro) Is Not Possible.

(Communication With ABS Only Is Not Possible)

DETECTING CONDITION

Trouble Symptoms Possible Cause

When communication with Hi-Scan (pro) is not possible, the - An open in the wire
cause may be probably an open in the HECU power circuit - Faulty HECU
or an open in the diagnosis output circuit. - Faulty power source circuit

INSPECTION PROCEDURES

CHECK FOR CONTINUITY IN THE DIAGNOSIS LINE

ON
(+) (-)
1. Disconnect the connector from the ABS control mod-
ule.
18
2. Check for continuity between terminals 11 of the ABS
control module connector and 1 of the data link con-
nector. 15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
Is there continuity? 26 25 24 23 22 21 20 19 18 17 16

YES

Check the power source of ABS control module.

KJRE501J

NO CHECK FOR POOR GROUND

Repair an open in the wire. Check for continuity between terminal 5 of the data link
connector and ground point.
CHECK THE POWER SOURCE OF ABS CONTROL
MODULE
YES
1. Disconnect the connector from the ABS control mod-
ule. Replace the ABS control module and recheck.

2. Turn the ignition switch ON, measure the voltage be- NO

tween terminal 18 of the ABS control module harness
side connector and body ground. Repair an open in the wire or poor ground.

Specification: approximately B+

Is voltage within specification?

YES 5

Check for poor ground.

NO

Check the harness or connector between the fuse

(10A) in the engine compartment junction block and
the ABS control module.Repair if necessary.
KJQE900E
ABS (ANTI-LOCK BRAKE SYSTEM) BR -73

When Ignition Key Is Turned ON (Engine OFF), The ABS Warning Lamp Does Not Light Up.

DETECTING CONDITION

Trouble Symptoms Possible Cause

When current flows in the HECU the ABS warning lamp turns - Faulty ABS warning lamp bulb
from ON to OFF as the initial check.Therefore if the lamp does - Blown No.2 fuse (10A) in the engine
not light up, the cause may be an open in the lamp power supply compartment junction block
circuit, a blown bulb, an open in the both circuits between the ABS - Faulty ABS warning lamp module
warning lamp and the HECU, and the faulty HECU. - Faulty HECU

INSPECTION PROCEDURES

PROBLEM VERIFICATION
ON )+( )-(
Disconnect the connector from the ABS control module
and turn the ignition switch ON.
Does the ABS warning lamp light up?
1

NO

It is normal. Recheck the ABS control module. 8 7 6 5 4 3 2 1

16 15 14 13 12 11 10
YES *
Check the power source for the ABS warning lamp.
KJRE501K
CHECK THE POWER SOURCE FOR THE ABS
WARNING LAMP
CHECK FOR BLOWN FUSE.
1. Disconnect the instrument cluster connector and turn
Check continuity of fuse (10A) from the engine compart-
the ignition switch ON.
ment junction block.
2. Measure the voltage between terminal 5 of the cluster Is there continuity?
harness side connector and body ground.
NO
Specification: approximately B+
Repair an open in the wire between ABS fuse and 1 of
cluster connector.
Is voltage within specification?
YES
NO
Replace the blown fuse.
Repair bulb or instrument cluster assembly.

YES

Check for blown fuse.

BR -74 BRAKE SYSTEM

Even After The Engine Is Started, The ABS Warning Lamp Remains ON.

DETECTING CONDITION

Trouble Symptoms Possible Cause

If the HECU detects trouble, it lights the ABS warning lamp while - An open in the wire
at the same time prohibiting ABS control. At this time, the HECU - Faulty instrument cluster assembly
records a DTC in memory.Even though the normal code is output, - Faulty ABS warning lamp module
the ABS warning lamp remains ON, then the cause may be probably - Faulty HECU
an open or short in the ABS warning lamp circuit.

INSPECTION PROCEDURES

CHECK DTC OUTPUT

1. Connect the Hi-Scan (pro) to the 16P data link con-

nector located behind the driver’s side kick panel.

2. Check the DTC output using Hi-Scan (pro).

Is DTC output?

NO

Repair circuit indicated by code output.

YES

Check instrument cluster.

CHECK INSTRUMENT CLUSTER

Disconnect the cluster connector and turn the ignition

switch ON.
Does the ABS warning lamp remains ON?

YES

Replace the instrument cluster.

NO

Check for open the wire.

CHECK FOR OPEN IN THE WIRE

Check for continuity in the wire between cluster and ABS

control module.
Is there continuity?

YES

Replace the ABS control module and recheck.

NO

Repair an open in the wire between cluster and ABS

control module.
ABS (ANTI-LOCK BRAKE SYSTEM) BR -75

BLEEDING OF BRAKE SYSTEM 4. Select and operate according to the instructions on

the hi-scan (Pro) screen.
This procedure should be followed to ensure adequate
bleeding of air and filling of the ABS unit, brake lines and
CAUTION
master cylinder with brake fluid.
You must obey the maximum operating time of the
1. Remove the reservoir cap and fill the brake reservoir ABS motor with the hi-scan (Pro) to prevent the
with brake fluid. motor pump from burning.

CAUTION 1) Select hyundai vehicle diagnosis.

If there is any brake fluid on any painted surface, 2) Select vehicle name.
wash it off immediately.
3) Select Anti-Lock Brake system.
NOTE
4) Select air bleeding mode.
When pressure bleeding, do not depress the brake
pedal. 5) Press "YES" to operate motor pump and solenoid
Recommended fluid........ DOT3 or DOT4 valve.

2. Connect a clear plastic tube to the wheel cylinder 1.6 AIR BLEEDING MODE
bleeder plug and insert the other end of the tube into ABS AIR BLEEDING STATUS
a half filled clear plastic bottle.
01. SOLENOID VALVE STATUS CLOSE
6.86~12.74 Nm (70~130 kgf cm, 5.09~9.45 lb-ft) 02. MOTOR PUMP STATUS OFF
DO YOU WANT TO START ?
(PRESS [YES] KEY)

EJDA014F

6) Wait 60 sec. before operating the air bleeding. (If

not, you may damage the motor.)

1.6 AIR BLEEDING MODE

ABS AIR BLEEDING STATUS
EJRF501H
01. SOLENOID VALVE STATUS OPEN
3. Connect the hi-scan (pro) to the data link connector 02. MOTOR PUMP STATUS ON
located underneath the dash panel. TIME : AUTOMATIC COUNT (1-60 SEC.)

EJDA014G

ARJE503N
BR -76 BRAKE SYSTEM

5. Pump the brake pedal several times, and then loosen

the bleeder screw until fluid starts to run out without
bubbles. Then close the bleeder screw.

6. Repeat step 5 until there are no more bubbles in the

fluid for each wheel.

Front right Rear right

Front left Rear left

KJKE003B

7. Tighten the bleeder screw.

Bleed screw tightening torque:

6.86~12.74 Nm (70 ~ 130 kgf·cm, 5.09 ~ 9.45 lb-ft)
ABS (ANTI-LOCK BRAKE SYSTEM) BR -77

DIAGNOSTIC TROUBLE CODE CHART(DTC)

WARNING LAMP SEE

DTC DESCRIPTION REMARK
ABS EBD ESP PAGE

C1101 BATTERY VOLTAGE HIGH BR - 79

C1102 BATTERY VOLTAGE LOW BR - 79

C1200 FL WHEEL SPEED SENSOR- OPEN/SHORT BR - 84

FL WHEEL SPEED SENSOR- RANGE/
C1201 BR - 88
PERFORMANCE
C1202 FL WHEEL SPEED SENSOR-NO SIGNAL BR - 91

C1203 FR WHEEL SPEED SENSOR- OPEN/SHORT BR - 84

FR WHEEL SPEED SENSOR- RANGE/
C1204 BR - 88
PERFORMANCE
FR WHEEL SPEED WHEEL SPEED
C1205 BR - 91
SENSOR-NO SIGNAL
C1206 RL WHEEL SPEED SENSOR- OPEN/SHORT BR - 84
RL WHEEL SPEED SENSOR- RANGE/
C1207 BR - 88
PERFORMANCE
RL WHEEL SPEED WHEEL SPEED
C1208 BR - 91
SENSOR-NO SIGNAL
C1209 RR WHEEL SPEED SENSOR- OPEN/SHORT BR - 84
RR WHEEL SPEED SENSOR- RANGE/
C1210 BR - 88
PERFORMANCE
C1211 RR WHEEL SPEED SENSOR-NO SIGNAL BR - 91

C1213 WHEEL SPEED FREQUENCY ERROR BR - 95

C1235 PRESSURE SENSOR-ELECTRICAL ESP BR - 97

C1237 PRESSURE SENSOR-SIGNAL FAULT ESP BR - 97

C1260 STEERING ANGLE SENSOR-SIGNAL ESP BR - 100

STEERING ANGLE SENSOR IS NOT
C1261 ESP BR - 100
CALIBRATED

C1282 YAW RATE LATERAL G SENSOR- ESP BR - 103

ELECTRICAL
C1283 YAW RATE LATERAL G SENSOR-SIGNAL ESP BR - 107

C1503 ESP SWITCH ERROR ESP BR - 110

C1513 BRAKE LIGHT SWITCH MAL. BR - 113

C1604 ECU HARDWARE ERROR BR - 115

C1605 CAN CONTROL HARDWARE ERROR ESP BR - 117

C1611 CAN TIME OUT-ECM ESP BR - 119

C1612 CAN TIME OUT-TCU ESP BR - 119

C1616 CAN BUS OFF ESP BR - 121

BR -78 BRAKE SYSTEM

WARNING LAMP SEE

DTC DESCRIPTION REMARK
ABS EBD ESP PAGE

C1623 CAN TIMEOUT STEERING ANGLE SENSOR ESP BR - 119

C1625 CAN TIME OUT-ESP ESP BR - 123

C1626 IMPLAUSIBLE CONTROL ESP BR - 125

C1702 VARIANT CODING ESP BR - 127

C2112 VALVE RELAY MAL. BR - 128

C2308 FL INLET VALVE MAL. BR - 131

C2312 FL OUTLET VALVE MAL. BR - 131

C2316 FR INLET VALVE MAL. BR - 131

C2320 FR OUTLET VALVE MAL. BR - 131

C2324 RL INLET VALVE MAL. BR - 131

C2328 RL OUTLET VALVE MAL. BR - 131

C2332 RR INLET VALVE MAL. BR - 131

C2336 RR OUTLET VALVE MAL. BR - 131

C2366 TC VALVE PRIMARY(USV1) ERROR ESP BR - 134

C2370 TC VALVE SECONDARY (USV2) ERROR ESP BR - 134

C2372 ESP VALVE 1(HSV1) ERROR ESP BR - 134

C2374 ESP VALVE 2 (HSV2) ERROR ESP BR - 134

C2402 MOTOR-ELECTRICAL BR - 135

ABS (ANTI-LOCK BRAKE SYSTEM) BR -79

DTC C1101 BATTERY VOLTAGE HIGH

DTC C1102 BATTERY VOLTAGE LOW

COMPONENT LOCATION EBC713EC

KJRE760C

GENERAL DESCRIPTION E9BEF58E

The ABS ECU(Electronic Control Unit) checks the battery voltage to determine, as a safety issue, whether the ABS system
can operate normally or not. The normal battery voltage range is essential for controlling the ABS system as intended.

DTC DESCRIPTION E8E06CCF

The ABS ECU monitors battery voltage by reading the value of voltage.

1. When the voltage is higher than the expected normal value, this code is set, and the ABS/EBD/TCS/ESP functions are
prohibited. If the voltage recovers, to within normal operating ranges, then the controller returns to normal operation
as well.

2. When the voltage is lower than the expected normal value, this code is set. The ABS/TCS/ESP functions are pro-
hibited and the EBD function is allowed on LOW VOLTAGE CONDITION 1, the ABS/EBD/TCS/ESP functions are
prohibited on UNDER VOLTAGE CONDITION.

3. If the voltage recovers, to within normal operating ranges, then the controller returns to normal operations as well.
BR -80 BRAKE SYSTEM

DTC DETECTING CONDITION E3FDDE1E

Item Detecting Condition Possible cause

DTC Strategy Battery Voltage Monitoring
C1101 High voltage problem will be monitored if filtered
Ignition Voltage is 16.8 V.
It will be reset if filtered Ignition Voltage 16.7 V.
C1102 1. Ignition Voltage is monitored for a level of filtered
Ignition Voltage 9.3 V outside control, or a level of
filtered Ignition Voltage 9.2 V during control.
2. Hard under voltage due to low voltage glitches
is detected if unfiltered Ignition Voltage =
Enable 8.2 V for t >= 20 ms.
Conditions 3. A hard under voltage problem will be detected
if the filtered UZ 7.7 V.
The system remains in this condition until • Poor connection in
filtered UZ 7.8 V. power supply circuit
(IGN+)
NOTE • Faulty Alternator
• Faulty HECU
All under voltage failures will only be saved in EEPROM
if vehicle speed is 6 km/h(3 MPH). This prevents false
failure entries due to a bad battery at ignition on.
Continuous.
Monitoring Under voltage faults are only entered in the EEPROM if the
period vehicle speed is v 6 km/h (3 MPH).
Over voltage faults will be always stored.
Effect The proper function of valves and return pump is not guaranteed.
• System down. The ABS/EBD/TCS/ESP functions are inhibited.
- The valve relay and all solenoids are prevented
Fail Safe
from being switched on.
• The ABS/EBD/TCS/ESP warning lamps are activated.

SPECIFICATION EED630FA

Voltage : 9.3 V 16.8 V

TERMINAL & CONNECTOR INSPECTION ECDFEACF

1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused
by interference from other electrical systems, and mechanical or chemical damage.

2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or
damage.

3. Has a problem been found?

YES

Repair as necessary and then go to "Verification of Vehicle Repair" procedure.

NO

Go to the next step.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -81

POWER SUPPLY CIRCUIT INSPECTION EEAABFE2

1. ALTERNATOR OUTPUT VOLTAGE INSPECTION

1) Engine "ON".

2) Measure voltage between the battery terminal(+) and the battery terminal(-).

Specification : Approx. 14.4 ± 0.3 V (20 C)

V Voltage regulator Regulating voltage

ambient temperature(¡C)
-30 14.1 ~ 15.2
20 14.1 ~ 14.7
Battery
120 13.3 ~ 14.7
1. Battery terminal (+)
2. Battery terminal (-)

EJRF501J

Is the measured voltage within specifications?

YES

Go to "Power Circuit Inspection" procedure.

NO

Check for damaged harness and poor connection between alternator and battery. If OK , repair or replace
alternator and then go to "Verification of vehicle Repair" procedure.

2. POWER CIRCUIT INSPECTION

1) Engine "ON".

2) Measure voltage between the battery terminal(+) and terminal "18(28:ESP)" of the HECU harness connector.

Specification : Approx. below 0.2 V

15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
26 25 24 23 22 21 20 19 18 17 16

Battery

EJRF501K
BR -82 BRAKE SYSTEM

Is the measured voltage within specifications?

YES

Go to "Ground Circuit Inspection" procedure.

NO

Check for damaged harness and poor connection between the battery terminal(+) and terminal "18(28:ESP)"
of the HECU harness connector. Repair as necessary and then go to "Verification of vehicle Repair" procedure.

GROUND CIRCUIT INSPECTION K1A7AC8E

1. Ignition "OFF".

2. Disconnect HECU connector.

3. Measure resistance between terminal "1,4" of the HECU harness connector and chassis ground.

Specification : Approx. below 1

15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
26 25 24 23 22 21 20 19 18 17 16

Ω Ω

KJRE501R

Is the measured resistance within specifications?

NO

Check for damaged harness and poor connection between terminal "1,4" of the HECU harness connector and
chassis ground. Repair as necessary and then go to "Verification of vehicle Repair" procedure.

YES

Go to "Component Inspection" procedure.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -83

COMPONENT INSPECTION EC4594E7

1. Ignition "OFF".

2. Engine "ON".
Does warning lamp remain On?

YES

Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and
then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by poor connection in power harness (IGN+), faulty Alternator and/or faulty HECU or
was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR EBBCF62B

After a repair, it is essential to verify that the fault has been corrected..

1. Connect scantool and select "Diagnostic Trouble Codes(DTCs)" mode.

2. Using a scantool, Clear DTC.

3. Operate the vehicle within DTC Detecting Condition in General Information.

Are any DTCs present?

YES

Go to the applicable troubleshooting procedure.

NO

A system performs normally at this time.

BR -84 BRAKE SYSTEM

DTC C1200 FL SENSOR-OPEN/SHORT

DTC C1203 FR SENSOR-OPEN/SHORT
DTC C1206 RL SENSOR-OPEN/SHORT
DTC C1209 RR SENSOR-OPEN/SHORT

COMPONENT LOCATION E2AC644A

KJRE502M

GENERAL DESCRIPTION E7EC844A

The wheel speed sensor is the essential component the ABS ECU uses to calculate vehicle speed and to determine
whether wheel lock occurs. For example, rear wheel speed signal is used as a reference value, for vehicle speed, in front
wheel drive vehicles, and if a difference between front and rear wheel speed occurs, then ABS control is performed. Wheel
speed sensor is an active hall-sensor type and good at temperature and noise charicteristic. Digital wave is produced as
tone wheel rotate according as hall sensor principle. Frequency of duty wave is changed in proportion to rotation of tone
wheel and HECU calculate vehicle speed by this frequency.

DTC DESCRIPTION K3A0FE9D

The ABS ECU monitors the wheel speed sensor circuit continuously. If the sensor signal current is continuously out of
the specified range for 200msec, then the HECU determines that the circuit is open/short, and sets this code. Warning
lamp is turned OFF if the detected fault is not more than when the IG KEY is turned to ON again, and wheel speeds are
more than 10 Km/h(6 MPH).
ABS (ANTI-LOCK BRAKE SYSTEM) BR -85

DTC DETECTING CONDITION E3AD2BA0

Item Detecting Condition Possible cause

DTC
Strat- Current Monitoring
egy
Monitoring period Once after power up.
Wheel speed sensor test starts immediate after
power. Especially shorts between WSS(Wheel
CASE 1 speed sensor) lines and shorts to UZ(ECU voltage
Enable Conditions
supply) can be detected by switching single WSS • Open or short of Wheel
channels in sequence. After end of test only the speed sensor circuit
channels with no fault are switched on. • Faulty Wheel speed
Monitoring period Continuous sensor
• Faulty HECU
The sensor circuitry has two current levels I = 7mA and
CASE 2 I= 14mA. If the sensor line is broken, shorted to ground
Enable Conditions or shorted to supply voltage a faulty current level will
be detected.WSS line faults are detected, if the fault
condition exists uninterrupted for t = 200ms.
No correct WSS Signal can be generated. Control of the corresponding wheel
Effect is no longer possible. If a sensor fault occurs on a front wheel, pressure is
increased; on a rear wheel, pressure is decreased (until switch off).

TERMINAL & CONNECTOR INSPECTION EBEA9B88

Refer to DTC C1101.

POWER SUPPLY CIRCUIT INSPECTION ECBF51BA

1. Ignition "ON" & Engine "OFF".

2. Measure voltage between terminal "2" of the wheel speed sensor harness connector and chassis ground.

Specification : approx. B+

1. Wheel speed sensor(-)

1 2 2. Wheel speed sensor(+)

V
EJRF501L
BR -86 BRAKE SYSTEM

Is the measured voltage within specifications?

YES

Go to "Signal Circuit Inspection" procedure.

NO

Check for open or short to GND in wheel speed sensor harness between terminal "16(ESP:26),9,6,8" of the HECU
harness connector and terminal "2" of the Wheel speed sensor harness connector. Repair as necessary and then
go to "Verification of vehicle Repair" procedure.

SIGNAL CIRCUIT INSPECTION EDF71F93

1. Ignition "ON" & Engine "OFF".

2. By turning the wheel with hand.

3. Measure voltage between terminal "5,10,17(ESP:27),19(ESP:29)" of the HECU harness connector and chassis
ground.

Specification : High : 0.89~1.26V , Low : 0.44~0.63V

15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
26 25 24 23 22 21 20 19 18 17 16

KJRE501Y

Is the measured voltage within specifications?

YES

Go to "Component Inspection" procedure.

NO

Check for open or short to GND in wheel speed sensor harness between terminal "1" of the wheel speed sensor
harness connector and terminal "5,10,17(ESP:27),19(ESP:29)" of the HECU harness connector. Repair as neces-
sary and then go to "Verification of vehicle Repair" procedure.
ABS (ANTI-LOCK BRAKE SYSTEM) BR -87

COMPONENT INSPECTION EEF0D679

1. Ignition "OFF".

2. Engine "ON".

3. Start and drive vehicle in gear and maintain vehicle speed is approx. 10km/h or more(6mph or more).
Does warning lamp remain On?

YES

Substitute with a known-good HECU and check for proper operation. If problem is corrected,replace HECU and
then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by open or short of wheel speed sensor harness, faulty wheel speed sensor and/or
faulty HECU or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR K8BFAC21

After a repair, it is essential to verify that the fault has been corrected.

1. Connect scantool and select "Diagnostic Trouble Codes(DTCs)" mode.

2. Using a scantool, Clear DTC.

3. Operate the vehicle within DTC Detecting Condition in General Information.(Start and drive vehicle in gear and main-
tain vehicle speed is approx. 10km/h or more(6mph or more))
Are any DTCs present?

YES

Go to the applicable troubleshooting procedure.

NO

A system performs normally at this time.

BR -88 BRAKE SYSTEM

DTC C1201 FL SENSOR-RANGE/PERFORMANCE

DTC C1204 FR SENSOR-RANGE/PERFORMANCE
DTC C1207 RL SENSOR-RANGE/PERFORMANCE
DTC C1210 RR SENSOR-RANGE/PERFORMANCE

COMPONENT LOCATION EF53B644

KJRE502M

GENERAL DESCRIPTION E99BF177

The wheel speed sensor is the essential component the ABS ECU uses to calculate vehicle speed and to determine
whether wheel lock occurs. For example, rear wheel speed signal is used as a reference value, for vehicle speed, in front
wheel drive vehicles, and if a difference between front and rear wheel speed occurs, then ABS control is performed. Wheel
speed sensor is an active hall-sensor type and good at temperature and noise charicteristic. Digital wave is produced as
tone wheel rotate according as hall sensor principle. Frequency of duty wave is changed in proportion to rotation of tone
wheel and HECU calculate vehicle speed by this frequency.

DTC DESCRIPTION EA98CDAF

The ABS ECU monitors the wheel speed sensor signal continuously. This code is set if an abnormal speed change ratio
is detected while the vehicle speed is 10~80 Km/h(6~50 MPH). Warning lamp is turned OFF if the detected fault is not
more than when the IG KEY is turned to ON again, and wheel speeds are more than 12 Km/h(7 MPH).
ABS (ANTI-LOCK BRAKE SYSTEM) BR -89

DTC DETECTING CONDITION E1B722FB

Item Detecting Condition Possible cause

DTC
Current Monitoring
Strategy
The monitoring is active from 10 km/h to 80km/h(6~50
Monitoring period MPH) and if no ABS-control is active at a front
wheel and a rear wheel.

CASE 1 Every time, if a gap in the wheel speed sensor

signal occurs cyclically with one wheel rotation, a
EnableConditions fault counter is increased by one. • Improper installation
If the fault counter exceeds its limit of 10, a wheel of wheel speed sensor
specific fault is stored in the EEPROM. • Abnormal Rotor and
wheel bearing
Monitoring period Continuous if V_Vehicle 12 m/s • Faulty Wheel speed
No wheel speed signals within 10 ms to 20 ms at sensor
a vehicle speed> 12 m/s (43.2 km/h, 27 MPH). If • Faulty HECU
CASE 2
EnableConditions the dynamic sensor monitor responses, the failures
will be stored into failure memory immediately
after a waiting period of 60ms.
Due to faulty wheel speed information the control of the corre-
sponding wheel is no longer possible.
Effect
reaction of the controller: If a sensor fault occurs on a front wheel, pressure
is increased; on a rear wheel, pressure is decreased.

MONITOR SCANTOOL DATA E701AC41

1. Connect scantool to Data Link Connector(DLC).

2. Engine "ON".

3. Start and drive vehicle in gear and maintain vehicle speed is approx. 40km/h or more(24 mph or more) Monitor the
"Wheel speed sensor" parameter on the Scantool.

Specification : Approx. 12 km/h or more(7 mph or more)

Is it normal?

YES

Fault is intermittent caused by faulty wheel speed sensor and/or faulty HECU or was repaired and HECU memory
was not cleared. Repair or replace as necessary and then go to "Component Inspection" procedure.

NO

1) Check for improper installation of wheel speed sensor. If NG, repair as necessary and then go to "Verification of
vehicle Repair" procedure.

2) Check for damage of rotor teeth or wheel bearing. If NG, repair as necessary and then go to "Verification of
vehicle Repair" procedure.

3) Substitute with a known-good Wheel speed sensor and check for proper operation. If problem is corrected,
replace Wheel speed sensor and then go to "Verification of Vehicle Repair" procedure.
BR -90 BRAKE SYSTEM

COMPONENT INSPECTION EDF75AF5

1. Ignition "OFF".

2. Engine "ON".

3. Start and drive vehicle in gear and maintain vehicle speed is approx. 12 km/h or more(7 mph or more).
Does warning lamp remain On?

YES

Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and
then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by open or short of wheel speed sensor harness, faulty wheel speed sensor and/or
faulty HECU or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR EE24FA21

After a repair, it is essential to verify that the fault has been corrected.

1. Connect scantool and select "Diagnostic Trouble Codes(DTCs)" mode.

2. Using a scantool, Clear DTC.

3. Operate the vehicle within DTC Detecting Condition in General Information.(Start and drive vehicle in gear and main-
tain vehicle speed is approx. 12 km/h or more(7 mph or more))
Are any DTCs present ?

YES

Go to the applicable troubleshooting procedure.

NO

A system performs normally at this time.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -91

DTC C1202 FL WHEEL SPEED SENSOR-NO SIGNAL

DTC C1205 FR WHEEL SPEED SENSOR-NO SIGNAL
DTC C1208 RL WHEEL SPEED SENSOR-NO SIGNAL
DTC C1211 RR WHEEL SPEED SENSOR-NO SIGNAL

COMPONENT LOCATION E547F2AF

KJRE502M

GENERAL DESCRIPTION EA259C69

The wheel speed sensor is the essential component the ABS ECU uses to calculate vehicle speed and to determine
whether wheel lock occurs. For example, rear wheel speed signal is used as a reference value, for vehicle speed, in front
wheel drive vehicles, and if a difference between front and rear wheel speed occurs, then ABS control is performed. Wheel
speed sensor is an active hall-sensor type and good at temperature and noise charicteristic. Digital wave is produced as
tone wheel rotate according as hall sensor principle. Frequency of duty wave is changed in proportion to rotation of tone
wheel and HECU calculate vehicle speed by this frequency.

DTC DESCRIPTION EFAECF2E

The ABS ECU monitors the wheel speed sensor signal continuously. This code is set when the sensor air gap is out
of specified range or when No wheel speed signals within 10 ms to 20 ms at a vehicle speed 43.2 km/h(26 MPH) .
Warning lamp is turned OFF if the detected fault is not more than when the IG KEY is turned to ON again, and wheel
speeds are more than 12 Km/h(7MPH).
BR -92 BRAKE SYSTEM

DTC DETECTING CONDITION E454E88F

Item Detecting Condition Possible cause

DTC
Signal monitoring
Strategy
Monitoring period Continuous except no under voltage is detected.
The test detects a failure if one (or two) wheel are
at Vmin(2.75 km/h ;1.7 MPH) and the other wheels
CASE 1 are above 12 km/h for longer than 1s.A fault could
Enable Conditions also be set during driving, if the vehicle accelerates
18 km/h after a particular wheel speed gets to
vmin(2.75 km/h ;1.7 MPH) and stays there. This
monitoring could only detect singular faults.
Monitoring period Continuous except no under voltage is detected.
No wheel speed signals within 10 ms to 20 ms
CASE 2 at a vehicle speed 12 m/s (43.2 km/h). If the
Enable Conditions dynamic sensor monitor responses, the failures
will be stored into failure memory immediately
after a waiting period of 60ms.

• The main monitor ( 5) needs additional • Improper installation of

information of the ESP-sensors and is active wheel speed sensor
Monitoring period for a velocity 20 km/h(12 MPH) and no • Abnormal Rotor and
under voltage(9.2 V) is detected. wheel bearing
• The backup monitor ( 6) manages with • Faulty Wheel speed
the wheel speeds alone. sensor
• The main monitor ( 5): If the maximum • Faulty HECU
difference of wheel speeds related to maximum
wheel speed exceeds 5% a wheel specific
wheel speed sensor fault is set.
CASE 3
- the above conditions apply for 20s for
1 defective WSS.
- the above conditions apply for 40s for
EnableConditions 2 defective WSS.
• The backup monitor ( 6):If the velocity is higher
than 50 km/h(31 MPH), the deviation between
the fastest and the slowest wheel must exceeds
6% related to the fastest wheel. If the velocity
is below 50 km/h(31 MPH), the deviation must
exceed an absolute value of 3km/h(1.8 MPH).
- detection filter time : normally 20s
Due to faulty wheel speed information the control of the
corresponding wheel is no longer possible.
Effect
reaction of the controller: If a sensor fault occurs on a front wheel,
pressure is increased; on a rear wheel, pressure is decreased
ABS (ANTI-LOCK BRAKE SYSTEM) BR -93

MONITOR SCANTOOL DATA E7A7DC54

1. Connect scantool to Data Link Connector(DLC).

2. Engine "ON".

3. Start and drive vehicle in gear and maintain vehicle speed is approx. 50 km/h or more(31 mph or more) Monitor the
"Wheel speed sensor" parameter on the Scantool.

Specification : Approx. 50 km/h or more(31 mph or more)

Is it normal?

YES

Fault is intermittent caused by faulty wheel speed sensor and/or faulty HECU or was repaired and HECU memory
was not cleared. Repair or replace as necessary and then go to "Component Inspection" procedure.

NO

1) Check for improper installation of wheel speed sensor. If NG, repair as necessary and then go to "Verification of
vehicle Repair" procedure.

2) Check for damage of rotor teeth or wheel bearing. If NG, repair as necessary and then go to "Verification of
vehicle Repair" procedure.

3) Substitute with a known-good Wheel speed sensor and check for proper operation. If problem is corrected,
replace Wheel speed sensor and then go to "Verification of Vehicle Repair" procedure.

COMPONENT INSPECTION EDA02C6B

1. Ignition "OFF".

2. Engine "ON".

3. Start and drive vehicle in gear and maintain vehicle speed is approx. 50 km/h or more(31 mph or more).
Does warning lamp remain On?

YES

Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and
then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by open or short of wheel speed sensor harness, faulty wheel speed sensor and/or
faulty HECU or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.
BR -94 BRAKE SYSTEM

VERIFICATION OF VEHICLE REPAIR E7CB563D

After a repair, it is essential to verify that the fault has been corrected.

1. Connect scantool and select "Diagnostic Trouble Codes(DTCs)" mode.

2. Using a scantool, Clear DTC.

3. Operate the vehicle within DTC Detecting Condition in General Information.(Start and drive vehicle in gear and main-
tain vehicle speed is approx. 50km/h or more(31mph or more) ).
Are any DTCs present ?

YES

Go to the applicable troubleshooting procedure.

NO

A system performs normally at this time.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -95

DTC C1213 WHEEL SPEED FREQUENCY ERROR

COMPONENT LOCATION E8BFFEF1

KJRE502M

GENERAL DESCRIPTION E0B1D280

The wheel speed sensor is the essential component the ABS ECU uses to calculate vehicle speed and to determine
whether wheel lock occurs. For example, rear wheel speed signal is used as a reference value, for vehicle speed, in front
wheel drive vehicles, and if a difference between front and rear wheel speed occurs, then ABS control is performed. Wheel
speed sensor is an active hall-sensor type and good at temperature and noise charicteristic. Digital wave is produced as
tone wheel rotate according as hall sensor principle. Frequency of duty wave is changed in proportion to rotation of tone
wheel and HECU calculate vehicle speed by this frequency.

DTC DESCRIPTION EDED9D4A

The ABS ECU monitors the wheel speed sensor signal continuously. The monitoring reports a failure if the ABS target
slip breaks out.

DTC DETECTING CONDITION E8E24EBB

Item Detecting Condition Possible cause

DTC Strategy Signal monitoring
The monitoring reports a failure if the ABS target slip is exceeded • Improper installation of
Enable for a time period = 10 s at one or more wheels. wheel speed sensor
Conditions If the driver brakes or the velocity is lower than 50 km/h(31 • Abnormal Rotor and
MPH) the detection time is enlarged to 60s. wheel bearing
• Faulty Wheel speed
Monitoring sensor
Continuous
period • Faulty HECU
Effect Reduced function of the ESP system.
BR -96 BRAKE SYSTEM

MONITOR SCANTOOL DATA E0945DFA

1. Connect scantool to Data Link Connector(DLC).

2. Engine "ON".

3. Start and drive vehicle in gear and maintain vehicle speed is approx. 10k m/h or more(6 mph or more). Monitor the
"Wheel speed sensor" parameter on the Scantool.

Specification : Approx.10 km/h or more(6 mph or more)

Is it normal?

YES

Fault is intermittent caused by faulty wheel speed sensor and/or faulty HECU or was repaired and HECU memory
was not cleared. Repair or replace as necessary and then go to "Component Inspection" procedure.

NO

1) Check for improper installation of wheel speed sensor. If NG, repair as necessary and then go to "Verification of
vehicle Repair" procedure.

2) Check for damage of rotor teeth or wheel bearing. If NG, repair as necessary and then go to "Verification of
vehicle Repair" procedure.

3) Substitute with a known-good Wheel speed sensor and check for proper operation. If problem is corrected,
replace Wheel speed sensor and then go to "Verification of Vehicle Repair" procedure.

COMPONENT INSPECTION EA4CCCB9

1. Ignition "OFF".

2. Engine "ON".

3. Start and drive vehicle in gear and maintain vehicle speed is approx. 10k m/h or more(6 mph or more).
Does warning lamp remain On?

YES

Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and
then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by open or short of wheel speed sensor harness, faulty wheel speed sensor and/or
faulty HECU or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR EEA9B1EE

Refer to DTC C1200.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -97

DTC C1235 PRESSURE SENSOR-ELECTRICAL

DTC C1237 PRESSURE SENSOR-SIGNAL FAULT

COMPONENT LOCATION EE83DBEF

KJRE423B

GENERAL DESCRIPTION EB4F41D4

The pressure sensor senses the brake oil pressure to judge driver’s brake intention when ESP is operating.
BR -98 BRAKE SYSTEM

DTC DETECTING CONDITION EFA08C77

Item Detecting Condition Possible cause

DTC Strategy Signal monitoring
1. Sensor supply voltage is continuous monitored (except power
on). A sensor supply failure is detected if Sensor Supply Voltage
5.3 V OR Sensor Supply Voltage 4.7 V for 60 ms.
2. Pressure signal 1 (DSO: original pressure value) is continuous
monitored (except power on). Line faults like open, short to GND
or short to UZ are detected. A Fault is set if the DSO signal is U
DSO 4.7 V OR U DSO 0.3 V for a time t = 100 ms.
3. Pressure signal 2 (DSI: inverted pressure value) is continuous
monitored (except power on). Line faults like open, short to GND
or short to UZ are detected. A Fault is set if the DSI signal isU
DSI 4.7 V OR U DSI 0.3 V for a time t = 100 ms.
4. Plausibility of DSO and DSI pressure lines are continuous
Enable
monitored.Internal DS5 faults (amplification-, bridge-,
Conditions
C1235 analog-digital converter malfunction, etc.) are detected
if DSO+DSI < 4.5 V OR DSO+DSI 5.5 V is present
longer than >= 100 ms .
5. POS(Power On Selftest) detects internal sensor malfunctions.
sensor element, amplification, etc.) The test phase is divided
in two 60 ms parts. DSO signal must be 0.5 V for 30 ms.
In phase 2 DSO signal must be between 1.9 V and 3.1 V
for also 30 ms then the POS Test is passed.
The test phase is divided in two 60 ms parts. DSO and
DSI signal must be 0.5 V for 30 ms. In phase 2 DSO
and DSI signal must be between 1.9 V and 3.1 V for also
30 ms then the POS Test is passed.
Monitoring 1~4 : Continuous • Faulty HECU
period 5 : Once during Power Up
1. The DS(Pressure sensor)-offset value must be in the range of
15 bar. A failure is detected if this range is exceeded.
2. There are three monitoring which have different thresholds
concerning the allowed pressure and the detection time.
a) Plausibility 1 :
For redundancy reasons an additional hardware-BLS
signal is created by the pressure sensor signal.
If the pressure sensor is compensated, the threshold for
generating the hardware-BLS signal is 10 bar.
Enable If the pressure sensor is not compensated, the
Conditions threshold is increased by 15 bar.
C1237 If this signal is set without any hardware-BLS-signals
being set, and if no pump is operated during that
time, a fault is set after the braking.
b) Plausibility 2 :
If the pressure signal is higher than 30 bar and not both of
the hardware-BLS are set, a fault is stored after 2s.
c) Plausibility 3:
If the pressure signal is higher than 80 bar and not both of
the hardware-BLS are set, a fault is stored after 1s.
1. After DS-initialization, no under voltage, no pumps are
Monitoring
running and no BLS-signal is set.
period
2. Continuous in the normal operating voltage range.
Effect No Pressure Signal available.
ABS (ANTI-LOCK BRAKE SYSTEM) BR -99

COMPONENT INSPECTION E8DDDBBA

1. Ignition "OFF".

2. Engine "ON".
Does warning lamp remain On?

YES

Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and
then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared. Go to the appli-
cable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR ECADBFBA

Refer to DTC C1101.

BR -100 BRAKE SYSTEM

DTC C1260 STEERING ANGLE SNSR-SIGNAL

DTC C1261 STEERING ANGLE SENSOR IS NOT CALIBRATED

COMPONENT LOCATION EABB4863

KJRE342A

DTC DESCRIPTION E410EEFA

The Steering wheel angle sensor determines the direction of the rotation.
ABS (ANTI-LOCK BRAKE SYSTEM) BR -101

DTC DETECTING CONDITION E015A95F

Item Detecting Condition Possible cause

DTC Strategy Signal monitoring
1. LWS(steering angle sensor) offset monitoring : If the
offset value exceeds a threshold of approximately 15
deg a LWS-fault is determined.
2. LWS Gradient monitoring :
- signal gradient (steering angle velocity) from one 20
ms-cycle to another is higher than 40 or
- change of this gradient (steering angle acceleration)
is higher than 15

3. LWS range monitoring : If value is higher than possible range

for more than 300 ms a fault is determined.
Enable
4. LWS Plausibility monitoring : Dependent on the driving conditions
Conditions
failures in size of [10 + 60 m/s / FZREF(reference speed)] deg
at steering angle are recognized within 400 .. 4800 ms .
5. LWS Constant Signal Monitoring : If there is no change in the
signal, but a right AND left cornering has been recognized, a • Faulty steering wheel
fault is determined. (lateral acceleration 2 m/s² in combination sensor
with a yaw rate 6 /s in both directions).
6. LWS Wrong Sign Monitoring : If the signals don’t fit and
forwards driving is detected, a fault is determined.
7. LWS Message counter monitoring : If the message counter
shows an increase higher than 3 or lower than 1 in one 20
ms-cyle, a fault is stored after 160 ms.
1. Continuous during driving.
2. no under voltage and at least one LWS-message was
sent in the current 20 ms-cycle.
Monitoring
3. After initialization and no under voltage detected.
period
4. Continuous during driving.
5. Initialization once in every ignition cycle.
6,7. Continuous during driving.
Effect Reduced controller function caused by faulty LWS signal.

COMPONENT INSPECTION EACD1983

1. CHECK INSTALLATION OF STEERING ANGLE SENSOR

Check if the steering angle sensor is properly installed.
Is the installation proper?

YES

Check power of steering angle sensor.

NO

Reinstall the steering angle sensor properly.

BR -102 BRAKE SYSTEM

POWER SUPPLY CIRCUIT INSPECTION E4BAAF7C

1. Disconnect the steering angle sensor connector, and measure the voltage between terminal 3 and 4 of the steering
angle sensor connector.

2. Measure the voltage between terminal 1 and 2 of the steering angle sensor connector.

V
+

3 2 1
4
* ** + -
-

V
KJRE502X

Is the voltage within 8~16V?

YES

Clear the DTC, and then drive a vehicle over 40 Km/h(24 MPH) .If ESP warning lamp turn on, replace the steering
wheel sensor. Then go to "Verification of Vehicle Repair" procedure.

NO

Check harness and connector between the HECU and the steering angle sensor. If NG ,replace the steering
wheel sensor.

VERIFICATION OF VEHICLE REPAIR E31B84FE

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -103

DTC C1282 YAW RATE & LATERAL G SENSOR-ELECTRICAL

COMPONENT LOCATION E9D8B46C

KJRE422A

GENERAL DESCRIPTION EA24B68C

The yaw-rate Lateral G sensor are used for the stability of a vehicle. The yaw-rate is used to measure angular velocity
while the Lateral G is to measure the force that moves the vehicle away from the center, when a vehicle is cornering.

DTC DESCRIPTION E4B82741

This code sets when there is an open or short in the circuit of the yaw-rate & lateral G sensor.

DTC DETECTING CONDITION EAF30E39

Item Detecting Condition Possible cause

DTC Strategy Signal monitoring
1. The AY(Acceleration Sensor) sensor voltage is monitored for
a is out of range value. A line fault is detected if AY 0.3
V OR AY 4.7 V for a time t = 100 ms..
2. Open line, short to GND and short to UZ are detected.
The DRS sensor voltage is monitored for a is out of range • Open or short of Yaw
Enable Rate Lateral G
value. A line fault is detected, if
Conditions sensor circuit
- DRSS 0.225 V OR DRSS 4.774 V for a
time t = 100 ms. • Faulty Yaw Rate
- DRSR 2.1 V OR DRSR 2.9 V for a time t 200 ms. Lateral G sensor
DRSS (Yaw sensor reference), DRS(yaw sensor), • Faulty HECU
DRSR(Yaw sensor signal)
Monitoring
Continuous
period
Effect Reduced controller function caused by faulty DRS and AY signal.

TERMINAL & CONNECTOR INSPECTION EAF9C4BD

Refer to DTC C1101.

BR -104 BRAKE SYSTEM

POWER SUPPLY CIRCUIT INSPECTION E8EB60C9

1. Ignition "ON" Engine "ON".

2. Measure voltage between terminal "3" of the Yaw Rate & Lateral G sensor harness connector and chassis ground.

Specification : 11.75 ~ 12.25 V

+
3 2 1
6 5 4

EJRF501M

Is the measured voltage within specifications?

YES

Go to "Ground Circuit Inspection" procedure.

NO

Check for open or short to GND in the Yaw Rate Lateral G sensor harness between terminal "3" of the Yaw Rate
Lateral G sensor harness connector and terminal "16,20" of the HECU harness connector. Repair as necessary
and then go to "Verification of vehicle Repair" procedure.

GROUND CIRCUIT INSPECTION E25C0DCE

1. Ignition "OFF".

2. Disconnect Yaw Rate & Lateral G sensor connector.

3. Measure resistance between terminal "6" of the Yaw Rate & Lateral G sensor harness connector and chassis ground.

Specification : Approx. below 1

ABS (ANTI-LOCK BRAKE SYSTEM) BR -105

+
3 2 1
6 5 4
-

EJRF501N

Is the measured resistance within specifications?

YES

Go to "Signal Circuit Inspection" procedure.

NO

Check for open or short in the Yaw Rate & Lateral G sensor harness between terminal "6" of the Yaw Rate & Lateral
G sensor harness connector and terminal "15" of the HECU harness connector. Repair as necessary and then go to
"Verification of vehicle Repair" procedure.

SIGNAL CIRCUIT INSPECTION E1412AE8

1. Ignition "OFF" & Engine "OFF".

2. Measure voltage between terminal "4, 5" of the Yaw Rate Lateral G sensor harness connector and chassis ground.

Specification : Approx. 2.5V

+
3 2 1
6 5 4
-

V V

EJRF501O

Is the measured voltage within specifications?

YES

Go to "Component Inspection" procedure.

BR -106 BRAKE SYSTEM

NO

Check for open or short in the Yaw Rate Lateral G sensor harness between terminal "4, 5" of the Yaw Rate
Lateral G sensor harness connector and terminal "16, 20" of the HECU harness connector. Repair as necessary and
then go to "Verification of Vehicle Repair" procedure.

COMPONENT INSPECTION EE25C98B

1. Ignition "OFF".

2. Engine "ON".
Does warning lamp remain On?

YES

Substitute with a known-good Yaw Rate Lateral G sensor and check for proper operation. If problem is corrected,
replace Yaw Rate Lateral G sensor and then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by open or short of Yaw Rate Lateral G sensor harness and/or faulty Yaw Rate
Lateral G sensor or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting
procedure.

VERIFICATION OF VEHICLE REPAIR E1B7FC62

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -107

DTC C1283 YAW RATE & LATERAL G SENSOR-SIGNAL

COMPONENT LOCATION EE9FBC63

KJRE422A

GENERAL DESCRIPTION EAB70386

The yaw-rate Lateral G sensor are used for the stability of a vehicle. The yaw-rate is used to measure angular velocity
while the Lateral G is to measure the force that moves the vehicle away from the center, when a vehicle is cornering.

DTC DESCRIPTION E9BABEC5

This code sets when there is an open or short in the circuit of the yaw-rate & lateral G sensor.
BR -108 BRAKE SYSTEM

DTC DETECTING CONDITION E3EAF5E4

Item Detecting Condition Possible cause

DTC Strategy Signal monitoring
This test detects internal AY(Acceleration sensor) sensor malfunctions.
1. During the POS measure window (t = 100 ms) the AY signal must
be for at least t = 60 ms between 0.2 V AY 0.8 V
2. If during stable vehicle behavior an AY-Failure larger than
approximately 2.5 m/s occurs, the ESP controller will disregard the
AY sensor information so that a false ESP intervention is prevented.
A fault is recognized after 1.6 s during model validity.
3. If the offset value exceeds a threshold of approximately
2.25 m/s² an AY fault is determined.
4. During standstill the plausible range of |AY| is below 7 m/s².
If the filtered value of |AY| is larger than 7 m/s² for more
than 400 m/s a fault is set.
5. If the lateral acceleration is higher than 15 m/s² for more than 800
ms a suspected failure bit is set. After 1,6 s a fault is detected.
Enable
6. Standstill compensation: Failure threshold 5.25 /s.Fast
Conditions
compensation (during driving if no standstill compensation could
be completed): Failure threshold is 7,5 /s.Long-term ("normal") • Faulty Lateral
compensation (during driving after succeeded standstill or fast Acceleration Sensor
offset compensation): Failure threshold is 7,5 /s. • Faulty Yaw Rate
7. The fault criteria is approx. 25 % sensitivity failure. Sensor
8. If the measured yaw rate deviates more than 2.5 /s plus a • Faulty HECU
dynamicthreshold from the reference yaw rate during model
validity, a failure isrecognized after 1.6 s. The dynamic threshold is
between 2.5 /s and more than 5 /s. A typical value is 3 /s.
9. The measured yaw rate and the model yaw rates, calculated
from theWSS and LWS are compared. If the signals doesn.t fit
and forward driving is recognized, a fault is determined.
10. In case of a YRS-failure, the YRS will send an
abnormal yaw rate signal.
1. Once after power up and no low voltage.
2,3,8. Continuous during stable driving.
4. Continuous during standstill.
Monitoring 5. Continuous, if no under voltage is detected.
period 6. Continuous, dependent on driving situation.
7. During stable cornering after completed offset compensation.
9. After every standstill
10. Continuous
Effect Reduced controller function caused by faulty DRS(yaw sensor) signal.

TERMINAL & CONNECTOR INSPECTION EDB6E09E

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -109

COMPONENT INSPECTION E18FD52E

1. Ignition "OFF".

2. Engine "ON".

3. Start and drive vehicle in gear and maintain vehicle speed is approx. 20 km/h or more(12 mph or more)
Does warning lamp remain On?

YES

Substitute with a known-good Yaw Rate Lateral G sensor and check for proper operation. If problem is corrected,
replace Yaw Rate Lateral G sensor and then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by open or short of Yaw Rate Lateral G sensor harness and/or faulty Yaw Rate
Lateral G sensor or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting
procedure.

VERIFICATION OF VEHICLE REPAIR E6DABD15

After a repair, it is essential to verify that the fault has been corrected.

1. Connect scantool and select "Diagnostic Trouble Codes(DTCs)" mode.

2. Using a scantool, Clear DTC.

3. Operate the vehicle within DTC Detecting Condition in General Information.(Start and drive vehicle in gear and main-
tain vehicle speed is approx. 20 km/h or more(12 mph or more))
Are any DTCs present?

YES

Go to the applicable troubleshooting procedure.

NO

A system performs normally at this time.

BR -110 BRAKE SYSTEM

DTC C1503 ESP SWITCH ERROR

COMPONENT LOCATION EA9ED8EF

EJRF501P

GENERAL DESCRIPTION ED874ED2

Driver can inhibit the ESP control by ESP switch. When switch signal send into HECU, ESP warning lamp go ON and
ESP control is stopped and if next switch signal is inputted again, ESP control is ready. This function is used for sporty
driving or vehicle inspection.

DTC DESCRIPTION EFC1B5B7

Trouble code is set when the condition that the level of ESP switch is high is continued for 60sec.When the ESP switch
failure is set there is no signal in the warning lamp and HECU inhibit the ESP control and allow the ABS/EBD control.

DTC DETECTING CONDITION E8F05D2F

Item Detecting Condition Possible cause

DTC Strategy Short circuit monitoring
Trouble code is set when the condition that the level of ESP • Open or short
Enable Conditions
switch is high is continued for 60 sec. ESP switch
Monitoring period Continuous

TERMINAL & CONNECTOR INSPECTION E4134BE7

Refer to DTC C1101.

SIGNAL CIRCUIT INSPECTION E22AB445

1. Ignition "ON" & Engine "OFF" & ESP Switch"ON".

2. Measure voltage between terminal "31" of the HECU harness connector and chassis ground.

Specification : Approx B+
ABS (ANTI-LOCK BRAKE SYSTEM) BR -111

25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26

EJRF501Q

Is the measured voltage within specifications?

YES

Fault is intermittent caused by open or short in ESP switch line, faulty ESP switch or was repaired and HECU
memory was not cleared. Go to the applicable troubleshooting procedure.

NO

Check for damaged harness and poor connection in the power harness between the battery terminal(+) and the
terminal "31" of the HECU harness connector . Check for open or blown 10A fuse referring to "Circuit Diagram" .
Repair as necessary and then go to "Verification of vehicle Repair" procedure.

COMPONENT INSPECTION E31CC225

1. Ignition "OFF".

2. Disconnect ESP switch connector.

3. Press the ESP switch.

4. Measure resistance between terminal "2" of the ESP switch harness connector and terminal "5" of the ESP switch
harness connector.

Specification : Approx below 1

2
5 4 3
*
*
Ω

EJRF501R
BR -112 BRAKE SYSTEM

Is the measured resistance within specifications?

YES

Fault is intermittent caused by faulty ESP switch or was repaired and HECU memory was not cleared. Go to the
applicable troubleshooting procedure.

NO

Substitute with a known-good ESP switch and check for proper operation. If problem is corrected, replace ESP
switch and then go to "Verification of Vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR E7626E6B

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -113

DTC C1513 BRAKE LIGHT SWITCH MAL.

COMPONENT LOCATION ED9CFA35

KJRE433C

GENERAL DESCRIPTION ECB9AA2D

The brake light switch indicates brake pedal status to the ABS control unit. The switch is turned on when brake is de-
pressed. The brake light switch is a normally-open contact which runs to battery voltage when active (brake depressed).
When passive (brake not depressed), the cable is grounded via the break light bulbs.

DTC DESCRIPTION EF4392B0

The brake light signal is a reference to judge driver’s will for braking. ABS ECU monitor open circuit of brake light switch
for normal ABS control.

DTC DETECTING CONDITION EEACDAB7

Item Detecting Condition Possible cause

DTC Strategy Open circuit monitoring
• Open circuit in
If the BLS-signals is high for 60 s, while the gas pedal is stepped, brake switch line
Enable Conditions with vehicle speed 3 m/s, offset compensated pVor 5 • Faulty brake light
bar and no control is active, a fault is set. switch
Monitoring period Continuous, if no under voltage is detected. • Faulty input
stage in HECU
Effect Reduced function caused by a faulty brake light switch.

TERMINAL & CONNECTOR INSPECTION E50FCDE6

Refer to DTC C1101.

SIGNAL CIRCUIT INSPECTION E5481F09

1. Ignition "ON" & Engine "OFF".

2. Press the brake pedal.

3. Measure voltage between the terminal "30" of the HECU harness connector and chassis ground.
BR -114 BRAKE SYSTEM

Specification : Brake Light Switch - Approx. B+

25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26

EJRF501S

Is the measured voltage within specifications?

YES

Fault is intermittent caused by open harness in brake lamp switch and brake switch line, faulty brake lamp switch
was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.

NO

Check for damaged harness and poor connection in the power harness between the battery terminal(+) and the
terminal "30" of the HECU harness connector . Check for open or blown 15A STOP fuse. Repair as necessary and
then go to "Verification of vehicle Repair" procedure.

COMPONENT INSPECTION E439AA5C

1. Connect a ohmmeter to the connector of brake light switch, and check whether or not there is continuity when the
plunger of the brake light switch is pushed in and when it is released.
The switch is in good condition if there is no continuity when the plunger is pushed.

2. Is there no continuity when the plunger is pushed?

YES

Fault is intermittent caused by open harness in brake light switch line, faulty brake lamp switch or was repaired
and HECU memory was not cleared. Go to the applicable troubleshooting procedure.

NO

Substitute with a known-good brake lamp switch and check for proper operation. If problem is corrected, replace
brake lamp switch and then go to "Verification of Vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR EA44DFDB

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -115

DTC C1604 ECU HARDWARE ERROR

COMPONENT LOCATION E9484A4E

KJRE423B

GENERAL DESCRIPTION E84ADDAF

The HECU is composed of a ECU (Electronic Control Unit ) and a HCU( Hydraulic Control Unit) , so the HECU hardware
includes all solenoid valves inside the unit as well as the ECU.

DTC DESCRIPTION ED7C74DB

The HECU monitors the operation of the IC components such as memory, register, A/D converter and so on. The HECU
sets this code when the EEPROM data read by the master processor is different than prior data writed, or when the
master/slave processor detects abnormal operation in RAM, Status Register, Interrupt, Timer, A/D converter or cycle
time.

DTC DETECTING CONDITION EBC1164B

Item Detecting Condition Possible cause

DTC Strategy Internal monitoring
1. Internal control unit failures of the Micro controller and peripheral
integrated circuits will be continuous monitored for proper function.
2. After EEPROM-values have been read from EEPROM, the
values are monitored for corrupt data. Failure is set if:
a) Checksum not correct or
Enable Conditions
b) PSW-EEPROM-Handler reported unknown failure
during EEPROM-value reading. • Faulty HECU

3. Evaluate EEPROM reading sequence.

If EEPROM reading sequence take longer then 3 s, a failure is set.
1.Continuos
Monitoring period
2,3.directly after ignition on, during reading of EEPROM-values.
Effect No control is available.
BR -116 BRAKE SYSTEM

COMPONENT INSPECTION EF8AB42E

1. Ignition "OFF".

2. Engine "ON".
Does warning lamp remain On?

YES

Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and
then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared. Go to the appli-
cable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR EAF3B0AF

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -117

DTC C1605 CAN CONTROL HARDWARE ERROR

COMPONENT LOCATION E155180B

KJRE423B

GENERAL DESCRIPTION EFCEE06D

The CAN is for sending and receiving the information for TCS(ESP) control, between the HECU and EMS/TCU.

DTC DESCRIPTION EBECBE5E

This code shows in case that there is an error on the CAN hardware. In this case, replace the HECU and check.

DTC DETECTING CONDITION ECA9F9D9

Item Detecting Condition Possible cause

DTC Strategy CAN RAM monitoring
1. Monitoring whether the initialization software has write
access to the configuration registers of the CAN-controller
module.Faults are detected immediately.
2. Monitoring includes line short to ground, line short to
Enable Conditions supply voltage and mutual line short.
Line interruptions are detected by CAN message monitor.After
detecting a BUSOFF failure the transmission is reinitialized. • Faulty HECU
A BUSOFF fault is established if re-initialization is tried for
15 times in sequence without success.
1. immediate during start up.
Monitoring period
2. Continuous
1. CAN-Controller is not initialized correctly. Possibly no
Effect reception or transmission of messages.
2. CAN messages can not be processed. BLS is not controlled.
BR -118 BRAKE SYSTEM

COMPONENT INSPECTION EF616370

1. Ignition "OFF".

2. Engine "ON".
Does warning lamp remain On?

YES

Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and
then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by short harness in CAN line and/or faulty HECU or was repaired and HECU memory
was not cleared. Go to the applicable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR EFCF02FE

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -119

DTC C1611 CAN TIME OUT-ECM

DTC C1612 CAN TIME OUT-TCU
DTC C1623 CAN TIMEOUT STEERING ANGLE SENSOR

COMPONENT LOCATION E6626A8C

KJRE423B

GENERAL DESCRIPTION EFAC4B05

The CAN is for sending and receiving the information for TCS(ESP) control, between the HECU and EMS/TCU.

DTC DESCRIPTION ECE364A4

This code shows in case that there is an error on the CAN hardware. In this case, replace the HECU and check.

DTC DETECTING CONDITION ED0B8F49

Item Detecting Condition Possible cause

DTC Strategy CAN RAM monitoring
1. Purpose is to monitor if transmitted message was not transmitted
by CAN controller of ABS8/ESP8 ECU.Faults are detected
after filtering. Filtering has to be customized.
Enable Conditions 2. Purpose is to monitor if transmitted message has the expected • Faulty HECU
data length.Actually the monitoring is reduced the check for • Faulty ECM
too short messages.A message with oversized data length • Faulty TCU
causes no fault. Faults are detected immediate. • Faulty Steering
angle sensor
Monitoring period Continuous
1. CAN messages are not correct sent.
Effect 2. CAN messages are not according to what was expected
at compile time of the software.
BR -120 BRAKE SYSTEM

COMPONENT INSPECTION EFF1B327

1. Ignition "OFF".

2. Engine "ON".
Does warning lamp remain On?

YES

Substitute with a known-good ECM(C1611)[TCU(C1612)/Steering angle sensor(C1623)] and check for proper
operation. If problem is corrected, replace ECM(C1611)[TCU(C1612)/Steering angle sensor(C1623)] and then go
to "Verification of Vehicle Repair" procedure. If NG, replace HECU and then go to "Verification of Vehicle Repair"
procedure.

NO

Fault is intermittent caused by faulty ECM(C1611)[TCU(C1612)/Steering angle sensor(C1623)] and/or faulty HECU
or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR EBAAFAD0

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -121

DTC C1616 CAN BUS OFF

COMPONENT LOCATION E7B1A03A

KJRE423B

GENERAL DESCRIPTION EFFAB1E9

The CAN is for sending and receiving the information for TCS(ESP) control, between the HECU and EMS/TCU.

DTC DESCRIPTION E7246BC3

The HECU checks the CAN communication lines for normal TCS control, and sets this code if CAN BUS OFF status is
detected for more than 100 ms.

DTC DETECTING CONDITION E084C50D

Item Detecting Condition Possible cause

DTC Strategy Open or short circuit monitoring
Monitoring includes line short to ground, line short to supply
voltage and mutual line short.
Line interruptions are detected by CAN message monitor.
Enable Conditions • Open or short
After detecting a BUSOFF failure the transmission is reinitialized.
A BUSOFF fault is established if re-initialization is tried for circuit in CAN
15 times in sequence without success. line

Monitoring period Continuous

CAN messages can not be processed.
Effect
BLS(Brake light switch) is not controlled.

TERMINAL & CONNECTOR INSPECTION ED5BFE2E

Refer to DTC C1101.

BR -122 BRAKE SYSTEM

SIGNAL CIRCUIT INSPECTION EEAC2FA0

1. Ignition "OFF".

2. Measure resistance between terminal "35" of the HECU harness connector and terminal "14" of the HECU harness
connector.

Specification : Approx. 60

25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26

EJRF501T

Is the measured resistance within specifications?

YES

Fault is intermittent caused by open or short in CAN signal harnessor was repaired and HECU memory was not
cleared. Go to the applicable troubleshooting procedure.

NO

Check for open or short in CAN signal harness between terminal "35" of the HECU harness connector and terminal
"14" of the HECU harness connector. Repair as necessary and then go to "Verification of vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR E1ADCEEC

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -123

DTC C1625 CAN TIME OUT-ESP

COMPONENT LOCATION E2B091EE

KJRE423B

GENERAL DESCRIPTION EEDAC1CA

The CAN is for sending and receiving the information for TCS(ESP) control, between the HECU and EMS/TCU.

DTC DETECTING CONDITION EEEC52A7

Item Detecting Condition Possible cause

DTC Strategy Open or short circuit monitoring
Purpose is to monitor if receive message was not received on • Open or short
Enable Conditions time by the CAN controller of ABS8/ESP8 ECU. circuit in CAN
Faults are detected after filtering. line
Monitoring period Continuous • Faulty HECU

Effect CAN messages are not received on time.

TERMINAL & CONNECTOR INSPECTION ECC97A5D

Refer to DTC C1101.

SIGNAL CIRCUIT INSPECTION EEBEB7CE

1. Check for open or short in CAN signal harness between terminal "35" of the HECU harness connector and PCM
harness connector.

2. Check for open or short in CAN signal harness between terminal "14" of the HECU harness connector and PCM
harness connector.
Is it normal?

YES

Replace the HECU. Then go to "Verification of vehicle Repair" procedure.

BR -124 BRAKE SYSTEM

NO

Repair or replace harness and connector.

VERIFICATION OF VEHICLE REPAIR E4CD4A94

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -125

DTC C1626 IMPLAUSIBLE CONTROL

COMPONENT LOCATION EFAEE38F

KJRE423B

DTC DETECTING CONDITION E61B09FE

Item Detecting Condition Possible cause

DTC Strategy Internal error
1. Under normal conditions, the inlet valves of all four wheels are
not closed during control for longer than 1.28 s.
If the controller requests pressure-hold or pressure-decrease
for longer than 1.28 s, a fault is stored.
Enable Conditions
2. The monitoring reports a failure if continuous ESP control
occurs for a time period = 10 s.
A continuous ESP control for longer than 10 s is not • Faulty HECU
possible under normal conditions.
1. Continuous
Monitoring period
2. detected under voltage and a fault is not already detected.
1. Reduced function as all wheel valves will remain in
Effect pressure build-up position.
2. Reduced function of the ESP system, no more ESP, no more ABS.
BR -126 BRAKE SYSTEM

COMPONENT INSPECTION E8DAF5C2

1. Ignition "OFF".

2. Engine "ON".
Does warning lamp remain On?

YES

Replace the HECU. Then go to "Verification of vehicle Repair" procedure.

NO

Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared. Go to the appli-
cable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR E5BA8CD9

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -127

DTC C1702 VARIANT CODING

GENERAL DESCRIPTION EC5EBC2F

A hardware difference of ECU does not exist according to the specification of the vehicle, but a software changes accord-
ing to deference of vehicle parameter. The ESP stores variant code (data of engine, displacement volume , T/M) at the
ECU memory. Since then a ESP uses the stored data.

COMPONENT INSPECTION EC91556F

*Variant Coding

1. Install a EMS/TCU/ESP normally.

2. Connect a scanner to the vehicle.

3. IGN On

4. Scanner On

5. Select a brake mode.

6. Push the Variant Coding button.

7. Scanner Off

8. IGN Off

9. Remove the scanner.

10. IGN On

11. Finish the Variant Coding.

BR -128 BRAKE SYSTEM

DTC C2112 VALVE RELAY MAL.

COMPONENT LOCATION E9CA651C

KJRE423B

GENERAL DESCRIPTION EB7E53C7

The ABS ECU supplies battery power to all solenoid valves by way of a valve relay which is controlled by the Electronic
Control UNIT(ECU). The valve relay and all solenoid valves are installed inside the HECU ( Hydraulic and Electronic
Control Unit ).

DTC DESCRIPTION EFD5C8B1

ABS ECU monitors voltage of the valve relay to check if ABS ECU can perform ABS control normally. When the valve
relay is switched to ON, the HECU will set this code if the solenoid drive voltage is below permissible voltage ranges for
a period of time. When the valve relay is switched to OFF, the HECU sets this code if the solenoid drive voltage is over
the permissible voltage range for a period of time.

DTC DETECTING CONDITION EA202C60

Item Detecting Condition Possible cause

DTC Strategy Battery Voltage Monitoring
1. Watchdog and VR(valve relay) function is tested during
startup.FSA test(Fail Save Circuit test) detects if the VR/Enable
remains in off position when it is turned on and vice versa.
Reason could be short to GND or UZ(ECU voltage supply),
interrupted lines or a defective output stage etc.
2. A Fault is detected if UVR(valve relay voltage) 0.8 • Open or short
Enable Conditions
* UZ for a time t 500 ms. of power supply
3. This test evaluates the function of the VR (vale relay) periodically. circuit
The VR is switched off and back on. VR malfunction and UVR • Faulty HECU
short to UZ or UBVR(supply solenoid valves) and medium or
high ohmic short of UVR (or a valve) to UZ, UBVR(supply
solenoid valves) or GND are detected.
1.Once during startup.
Monitoring period
2,3.Continuous
Effect No valve actuation possible.
ABS (ANTI-LOCK BRAKE SYSTEM) BR -129

TERMINAL & CONNECTOR INSPECTION ED71DA3F

Refer to DTC C1101.

POWER SUPPLY CIRCUIT INSPECTION EE72AFE6

1. Ignition "OFF"

2. Disconnect HECU connector.

3. Ignition "ON" Engine "OFF".

4. Measure voltage between terminal "3" of the HECU harness connector and chassis ground.

Specification :Approx. B+

15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
26 25 24 23 22 21 20 19 18 17 16

EJRF501U

Is the measured voltage within specifications?

YES

Go to "Ground Circuit Inspection" procedure.

NO

Check for open or short in power harness between battery terminal(+) and terminal "3" of the HECU harness
connector. Check for open or blown 20A fuse . Repair as necessary and then go to "Verification of vehicle Repair"
procedure.
BR -130 BRAKE SYSTEM

GROUND CIRCUIT INSPECTION E25C0DCE

1. Ignition "OFF".

2. Disconnect HECU connector.

3. Measure resistance between terminal "4" of the HECU harness connector and chassis ground.

Specification :Approx.below 1

Is the measured resistance within specifications?

YES

Go to "Component Inspection" procedure.

NO

Check for damaged harness and poor connection between terminal "4" of the HECU harness connector and chas-
sis ground. Repair as necessary and then go to "Verification of vehicle Repair" procedure.

COMPONENT INSPECTION E97DF095

1. Ignition "OFF".

2. Engine "ON".
Does warning lamp remain On?

YES

Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and
then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by open or short of power harness and/or faulty HECU or was repaired and HECU
memory was not cleared. Go to the applicable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR EB6A1AAF

Refer to DTC C1101.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -131

DTC C2308 FL INLET VALVE MAL.

DTC C2312 FL OUTLET VALVE MAL.
DTC C2316 FR INLET VALVE MAL.
DTC C2320 FR OUTLET VALVE MAL.
DTC C2324 RL INLET VALVE MAL.
DTC C2328 RL OUTLET VALVE MAL.
DTC C2332 RR INLET VALVE MAL.
DTC C2336 RR OUTLET VALVE MAL.

COMPONENT LOCATION E46C9B59

KJRE423B

GENERAL DESCRIPTION E59AFBE4

The ABS HECU is composed of an ECU (Electronic Control Unit ) and a HCU( Hydraulic Control Unit), so the HECU
hardware includes all solenoid valves inside the unit as well as the ECU. Solenoid valves are switched to ON, OFF by
HECU when the ABS is activated. Solenoid valves function is to increase, decrease or maintain the hydraulic pressure
supplied to a wheel cylinder.

DTC DESCRIPTION EEDC0E1D

The HECU monitors the operation of the valves by checking the drive circuit of the solenoid valves, and then sets this
code when the unexpcted drive voltage is detected. For example, the HECU sets the DTC if an unexpected high drive
voltage is detected when the valve relay is switched to OFF.
BR -132 BRAKE SYSTEM

DTC DETECTING CONDITION EEAB5B72

Item Detecting Condition Possible cause

DTC Strategy Battery Voltage Monitoring
1. The electrical feedback signal does not match the actuation
signal for the corresponding valve:
Actuation Signal != Feedback Signal
Fault filter time is t = 30 ms
(for current controlled valves and under voltage
conditions: t =80 ms)
2. Cyclic Valve and Relay Test (CVRT):
• A Fault is found if UVR(Valve relay voltage) is not within
0.1 * UZ(Ignition voltage) UVR 0.8 * UZ
Enable Conditions
• A Fault is found if UVR is not UVR 0.2 * UZ and
the Valve Feedback is not act. Valve = = FALSE,
not act. Valve = = TRUE
At least VR is switched on again.
• Faulty HECU
3. The valve and pump motor test detects electrical actuation
malfunction of ABS valves. The test actuates all valves in series
(to detect short cuts or shunts between the valve lines). Faults
are detected by monitoring the valve response signals.
1. Continuous
2. CVRT is executed immediately after power on and
then periodic every t =20 s.
Monitoring period The Test is canceled if any control/valve actuation takes place
or if the Vehicle is in motion and the BLS is on.
3. The Valve and Pump motor Test is performed once after
ignition on if vehicle speed is >= 15 km/h(9 MPH).
Valve cannot be actuated or valve is incorrectly actuated.
Effect
This may result in locked wheels or wheels without pressure.

COMPONENT INSPECTION E4AFF464

1. Ignition "OFF".

2. Engine "ON".

3. Start and drive vehicle in gear and maintain vehicle speed is approx. 15 km/h or more(9 mph or more)
Does warning lamp remain On?

YES

Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and
then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared. Go to the appli-
cable troubleshooting procedure.
ABS (ANTI-LOCK BRAKE SYSTEM) BR -133

VERIFICATION OF VEHICLE REPAIR E6DABD16

After a repair, it is essential to verify that the fault has been corrected.

1. Connect scantool and select "Diagnostic Trouble Codes(DTCs)" mode.

2. Using a scantool, Clear DTC.

3. Operate the vehicle within DTC Detecting Condition in General Information. (Start and drive vehicle in gear and
maintain vehicle speed is approx. 15 km/h or more(9 mph or more))
Are any DTCs present ?

YES

Go to the applicable troubleshooting procedure.

NO

A system performs normally at this time.

BR -134 BRAKE SYSTEM

DTC C2366 TC VALVE PRIMARY(USV1) ERROR

DTC C2370 TC VALVE SECONDARY(USV2) ERROR
DTC C2372 ESP VALVE 1(HSV1) ERROR
DTC C2374 ESP VALVE 2(HSV2) ERROR

COMPONENT LOCATION EF6AF078

KJRE423B

GENERAL DESCRIPTION E1FF760A

The ESP HECU is composed of an ECU (Electronic Control Unit ) and a HCU( Hydraulic Control Unit), so the HECU
hardware includes all solenoid valves inside the unit as well as the ECU. Solenoid valves are switched to ON, OFF by
HECU when the ABS/ESP is activated. Solenoid valves function is to increase, decrease or maintain the hydraulic pres-
sure supplied to a wheel cylinder.

DTC DETECTING CONDITION EDF0C317

Item Detecting Condition Possible cause

DTC Strategy Battery Voltage Monitoring
The valve and pump motor test detects electrical actuation
malfunction of USV and HSV valves.
Enable Conditions The test actuates all valves in series (to detect shorts or
shunts between the valve lines).
Faults are detected by monitoring the valve response signals. • Faulty HECU

The USV Test is performed once after ignition on at standstill if the BLS
Monitoring period
is off and at vehicle speed is v >= 15 km/h(9 MPH) if the BLS is on.
Valve cannot be actuated or valve is incorrectly actuated.
Effect
This may result in locked wheels or wheels without pressure.

COMPONENT INSPECTION EFCEA1F9

Refer to DTC C2308.

VERIFICATION OF VEHICLE REPAIR EAEBFBB6

Refer to DTC C2308.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -135

DTC C2402 MOTOR-ELECTRICAL

COMPONENT LOCATION EFC48FCB

KJRE423B

GENERAL DESCRIPTION E6CFFA87

The ABS ECU supplies battery power to the electric motor by way of a motor relay which is controlled by the Electronic
Control Unit(ECU). The electric motor pump supplies hydraulic pressure to all wheel brake calipers by operating the piston
inside the pump.

DTC DESCRIPTION EBDEB5B2

The ABS/ESP ECU monitors the pump motor relay or fuse open, open or short in motor or motor lock and then sets this
code if a malfunction is detected.
BR -136 BRAKE SYSTEM

DTC DETECTING CONDITION E1ADBDCB

Item Detecting Condition Possible cause

DTC Strategy Battery Voltage Monitoring
1. A failure is detected if the voltage UM (Pump motor
voltage) 2.0 V for a time t = 1 s.
2. A failure is detected if the voltage UM (Pump motor voltage)
(UZ(battery voltage) - 4.0 V) for a time t = 100 ms.
3. After the end of the actuation of the motor relay has, the pump
motor is still in motion and is generating a Voltage during
it.s slowdown. The generated UM is monitored for a certain
time on high level. The time depends on the supply voltage
Enable Conditions and is in the range of t = 30 ms to t = 125 ms.If the slow
down condition isn.t met, the pump is activated again (see
actuation times below) and the slowdown time is measured
again. This is repeated for maximum n = 3 times. If, after • Open or short
the last pump activation, the pump motor slowdown time is of power supply
still to short, a failure is detected.Actuation times: circuit
1st actuation: 200 ms • Faulty HECU
2nd actuation: 1000 ms
3rd actuation: 3000 ms
1. Stop monitor is active if the pump is off i.e. not
actuation and no Slowdown.
Monitoring period
2. The monitor is active if the pump is switched on .
3. Monitor is always active in the transition "pump on -> pump off".
1. The return pump does not work correct.
2. Pressure decrease (outlet valve) is no longer
Effect possible (wheels block).
3. Pressure decrease (outlet valve) is no longer
possible (wheels lock).

TERMINAL & CONNECTOR INSPECTION E105DC30

Refer to DTC C1101.

POWER SUPPLY CIRCUIT INSPECTION ED01E6CB

1. Ignition "OFF"

2. Disconnect HECU connector.

3. Ignition "ON" Engine "OFF".

4. Measure voltage between terminal "2" of the HECU harness connector and chassis ground.

Specification :Approx. B+
ABS (ANTI-LOCK BRAKE SYSTEM) BR -137

15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
26 25 24 23 22 21 20 19 18 17 16

EJRF501V

Is the measured voltage within specifications?

YES

Go to "Ground Circuit Inspection" procedure.

NO

Check for open or short in power harness between battery terminal(+) and terminal "2" of the HECU harness
connector. Check for open or blown 40A fuse . Repair as necessary and then go to "Verification of vehicle Repair"
procedure.

GROUND CIRCUIT INSPECTION EC5BCE5F

1. Ignition "OFF".

2. Disconnect HECU connector.

3. Measure resistance between terminal "1" of the HECU harness connector and chassis ground.

Specification :Approx.below 1

15 14 13 12 11 10 9 8 7 6 5
4 3 2 1
26 25 24 23 22 21 20 19 18 17 16

EJRF501W

Is the measured resistance within specifications?

YES

Go to "Component Inspection" procedure.

BR -138 BRAKE SYSTEM

NO

Check for damaged harness and poor connection between terminal "1" of the HECU harness connector and chas-
sis ground. Repair as necessary and then go to "Verification of vehicle Repair" procedure.

COMPONENT INSPECTION EC1BFE7C

Refer to DTC C2308.

VERIFICATION OF VEHICLE REPAIR ECD40451

Refer to DTC C2308.

ABS (ANTI-LOCK BRAKE SYSTEM) BR -139

ANTI-LOCK BRAKING SYSTEM

CONTROL MODULE

COMPONENTS E4BF16F7

10

1 2 3
5 4

16.66~25.48
7 (170~260, 12.36~18.9)

TORQUE : N m (kgf cm, lb-ft)

1. Front-left tube 6. MC1
2. Front-right tube 7. ABS control module connector(26P)
3. Rear-left tube 8. ABS control module(HECU)
4. Rear-right tube 9. Damper
5. MC2 10. Bracket
EJRF501X
BR -140 BRAKE SYSTEM

REMOVAL E8AC4A3F INSTALLATION EEB5ADBE

1. Disconnect the brake tube from the HECU by unlock- 1. Installation is the reverse of removal.
ing the nuts counterclockwise with a spanner.
2. Tighten the HECU mounting bolts and brake tube nuts
to the specified torque.

Tighterning torque
HECU mounting nut :
5.88~9.8 Nm (60~100 kgf·cm, 4.36~7.27 Ib-ft)
HECU bracket mounting bolt:
16.66~25.48 Nm (170~260 kgf·cm, 12.36~18.9 Ib-ft)

KJRE502T

2. Lift up the vehicle.

3. Disconnect the connector(A) from the HECU.

B
KJRE503S

4. Remove the two HECU brake mounting bolts(B) , and

then disassemble the HECU with the bracket.

CAUTION
1. Never attempt to disassemble the HECU.
2. The HECU must be transported and stored in
3. Never shock to the HECU.

5. Remove the two HECU mounting nuts and washer,

and then remove the bracket.
ABS (ANTI-LOCK BRAKE SYSTEM) BR -141

FRONT WHEEL SPEED SENSOR

COMPONENTS E9BA1C3F

1. Front wheel speed sensor connector

2. Front wheel speed sensor

EJRF501Y
BR -142 BRAKE SYSTEM

REMOVAL EA8CB8C7 INSPECTION EA0FA5F9

1. Remove the front wheel speed sensor mounting 1. Measure the output voltage between the terminal of
bolt(A). the wheel speed sensor and the body ground.

CAUTION
A
In order to protect the wheel speed sensor, when
measuring output voltage, a 75 resister must be
used as shown.

Power

DC 12V Ground
Wheel sensor
Vin
Vout

R(75Ω)
KJRE504J

Tone wheel
2. Remove the front wheel guard.
Oscilloscope
3. Remove the front wheel speed sensor after discon-
necting the wheel speed sensor connector(A).
EJRF501Z

2. Compare the change of the output voltage of the

wheel speed sensor to the normal change of the
output voltage as shown below.

A Vhigh

KJRE503V

Vlow

0V
t

KJQE260B

• V_low : 0.44 V ~ 0.63 V

• V_high : 0.885 V ~ 1.26 V
• Frequency range : 1~2,500 Hz
ABS (ANTI-LOCK BRAKE SYSTEM) BR -143

REAR WHEEL SPEED SENSOR

COMPONENTS E53F460A

1. Rear wheel speed sensor connector

2. Rear wheel speed sensor
EJRF502A
BR -144 BRAKE SYSTEM

REMOVAL EAE1450B INSPECTION EC85D750

1. Remove the rear wheel speed sensor mounting 1. Measure the output voltage between the terminal of
bolt(A). the wheel speed sensor and the body ground.

CAUTION
In order to protect the wheel speed sensor, when
measuring output voltage, a 75 resister must be
used as shown.

A Power

DC 12V Ground
Wheel sensor
Vin
Vout

R(75Ω)
KJRE503W

Tone wheel
2. Remove the rear seat side pad then disconnect the
rear wheel speed sensor connector(A).
Oscilloscope

EJRF501Z

2. Compare the change of the output voltage of the

wheel speed sensor to the normal change of the
output voltage as shown below.

KJRE503X Vhigh

Vlow

0V
t

KJQE260B

• V_low : 0.44 V ~ 0.63 V

• V_high : 0.885 V ~ 1.26 V
• Frequency range : 1~2,500 Hz
EBD (ELECTRONIC BRAKE-FORCE DISTRIBUTION) BR -145

EBD (ELECTRONIC The proportioning valve, because of a mechanical device,

has limitations to achieve an ideal brake force distribu-
BRAKE-FORCE tion tothe rear wheels as well as to carry out the flexible
DISTRIBUTION) brake force distribution proportioning to the vehicle load
or weight increasing. And in the event of malfunctioning,
driver cannot notice whether it fails or not.
DESCRIPTION ECEEDFAE

EBD controlled by the ABS Control Module, calculates the

The EBD system (Electronic Brake force Distribution) as slip ratio of each wheel at all times and controls the brake
a sub-system of the ABS system is to control the effective pressure of the rear wheels not to exceed that of the front
adhesion utilization by the rear wheels. wheels.

It further utilizes the efficiency of highly developed ABS If the EBD fails, the EBD warning lamp (Parking brake
equipment by controlling the slip of the rear wheels in the lamp) lights up.
partial braking range.
ADVANTAGES
The brake force is moved even closer to the optimum and
controlled electronically, thus dispensing with the need for - Function improvement of the base-brake system.
the proportioning valve. - Compensation for the different friction coefficients.
- Elimination of the proportioning valve.
- Failure recognition by the warning lamp.

COMPARISON BETWEEN PROPORTIONING VALVE AND EBD

[With P-Valve] [With EBD]

Rear pressure
Rear pressure

Fixed distribution

Ideal distribution Ideal distribution

Cut-in point EBD starting point

Front pressure Front pressure

EJA0032A
BR -146 BRAKE SYSTEM

ESP(ELECTRONIC and acceleration and, thus, mainly intervenes in the longi-

tudinal dynamics of the vehicle, active yaw control stabi-
STABILITY PROGRAM) lizes the vehicle about its vertical axis.
SYSTEM This is achieved by wheel individual brake intervention and
adaptation of the momentary engine torque with no need
DESCRIPTION OF ESP EAEE26D8 for any action to be taken by the driver.

Optimum driving safety now has a name : ESP, the Elec- ESP essentially consists of three assemblies : the sen-
tronic Stability Program. sors, the electronic control unit and the actuators.

ESP recognizes critical driving conditions, such as panic Of course, the stability control feature works under all driv-
reactions in dangerous situations, and stabilizes the ve- ing and operating conditions. Under certain driving condi-
hicle by wheel-individual braking and engine control in- tions, the ABS/TCS function can be activated simultane-
tervention with no needfor actuating the brake or the gas ously with the ESP function in response to a command by
pedal. the driver.

ESP adds a further function known as Active Yaw Control In the event of a failure of the stability control function, the
(AYC) to the ABS, TCS, EBD and ESP functions. Whereas basic safety function, ABS, is still maintained.
the ABS/TCS function controls wheel slip during braking

Driving force control

E E
ESP ESP
S S
Drift-out Yaw-moment
P P
Control Control

Brake force control

LJCD201A
ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM BR -147

DESCRIPTION OF ESP CONTROL

AYC function prevents unstable maneuver of the vehicle.
ESP system includes ABS/EBD, TCS and AYC function. To determine the vehicle maneuver, AYC function uses the
maneuver sensor signals(Yaw Rate Sensor, Lateral Accel-
ABS/EBD function The ECU changes the active sensor eration Sensor, Steering Wheel Angle Sensor).If vehicle
signal (current shift) coming from the four wheel sensors maneuver is unstable (Over Steer or Under Steer), AYC
to the square wave.By using the input of above signals, function applies the brake pressure on certain wheel, and
the ECU calculates the vehicle speed and the acceleration send engine torque reduction signal by CAN.
&amp;amp;amp; deceleration of the four wheels.And, the
ECU judges whether the ABS/EBD should be actuated or After the key-on, the ECU continually diagnoses the
not. system failure. (self-diagnosis)If the system failure is
detected, the ECU informs driver of the system failure
TCS function prevents the wheel slip of drive direction by through the BRAKE/ABS/ESP warning lamp. (fail-safe
adding the brake pressure and engine torque reduction via warning)
CAN communication.TCS function uses the wheel speed
sensor signal to determine the wheel slip as far as ABS
function.

Master cylinder
Pressure sensor
Steering wheel
Angle sensor
Master
cylinder

ESP Yaw-rate &

Wheel speed HECU Wheel speed
lateral acceleration
sensor sensor
sensor

EJRF502K
BR -148 BRAKE SYSTEM

VARIANT CODING stores variant code (data of engine, displacement volume

, T/M) at the ECU memory. Since then an ESP uses the
A hardware difference of ECU does not exist according stored data.
to the specification of the vehicle, but a software changes
according to deference of vehicle parameter. The ESP

KJRE500L

*PROCEDURE

1. Install a EMS/TCU/ESP normally.

2. Connect a scanner to the vehicle.

3. IGN On

4. Scanner On

5. Select a brake mode.

6. Push the Variant Coding button.

7. Scanner Off

8. IGN Off

9. Remove the scanner.

10. IGN On

11. Finish the Variant Coding.

ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM BR -149

INPUT AND OUTPUT DIAGRAM

Input ESP HECU Output

Active Wheel
speed sensor Hydraulic unit
(FL) -Intergrated with HECU
Active Wheel
speed sensor
(FR)

Active Wheel
ESP Control
speed sensor
Warning Lamp
(RL)
(ABS, EBD, ESP)
Active Wheel
speed sensor
(RR)
ABS Control
Steering Wheel Diagnosis
Angle sensor K-Line

Yaw-rate & Lateral TCS Control

Function Lamp
Acceleration sensor
(ESP)

Master cylinder
pressure sensor
Primary
Secondary Wheel speed
sensor output

Brake switch

CAN ECU
ESP OFF switch
TCU

EJRF502N
BR -150 BRAKE SYSTEM

ESP OPERATION MODE E9D3CE94

1. STEP 1
The ESP analyzes the intention of the driver.

Position of steering wheel

+ Vehicle speed ECU decides the intention of the driver.
+ Acceleration pedal

EJRF502B

2. STEP 2
It analyzes the movement of the ESP vehicle.

Vehicle rotation speed

ECU decides movement of the ESP vehicle.
+ Operated power to the side

EJRF502C

3. STEP 3
It controls a vehicle posture control through the ESP
braking power.
• The ECU calculates the needed countermea-
sure.
• The hydraulic unit controls Independently the
braking power of an each wheel.
• The ESP adjusts an engine output through an
engine and communication line to be connected.
ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM BR -151

ESP OPERATION MODE

1. ESP Non-operation-Normal braking.

High pressure
Inlet valve(EV) Outlet valve(AV) Pilot valve(USV) switch Pump motor
valve(HSV)
Normal braking Open Close Open Close OFF

MC2 MC1

HSV2 USV2 USV1 HSV1

sRP2 sRP1
M

LREV RFEV LFEV RREV

RVR2 RVR1
A2 A1

RFAV RRAV

LRAV LFAV

LR RF LF RR

KJRE501L
BR -152 BRAKE SYSTEM

2. ESP INCREASE MODE

High pressure
Inlet valve(EV) Outlet valve(AV) Pilot valve(USV) switch Pump motor
valve(HSV)
ON(Motor speed
Normal braking Open Close Close(Partial) Open
control)

MC2 MC1

HSV2 USV2 USV1 HSV1

sRP2 sRP1
M

LREV RFEV LFEV RREV

RVR2 RVR1
A2 A1

RFAV RRAV

LRAV LFAV

LR RF LF RR

KJRE501M
ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM BR -153

3. ESP HOLD MODE ( FR is only controlled.)

High pressure
Inlet valve(EV) Outlet valve(AV) Pilot valve(USV) switch Pump motor
valve(HSV)
ON(Motor low
Normal braking Close Close Close(Partial) Open
speed control)

MC2 MC1

HSV2 USV2 USV1 HSV1

sRP2 sRP1
M

LREV RFEV LFEV RREV

RVR2 RVR1
A2 A1

RFAV RRAV

LRAV LFAV

LR RF LF RR

KJRE501N
BR -154 BRAKE SYSTEM

4. ESP DECREASE MODE (FR is only controlled)

High pressure
Inlet valve(EV) Outlet valve(AV) Pilot valve(USV) switch Pump motor
valve(HSV)
ON(Motor low
Normal braking Close Open Close(Partial) Open
speed control)

MC2 MC1

HSV2 USV2 USV1 HSV1

sRP2 sRP1
M

LREV RFEV LFEV RREV

RVR2 RVR1
A2 A1

RFAV RRAV

LRAV LFAV

LR RF LF RR

KJRE501O
ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM BR -155

COMPONENTS E4CFAAFE

ESP Operation lamp

ABS Warning lamp

ESP ESP

Yaw-late & lateral G sensor

ESP Control module(HECU)

Parking/EBD warning lamp

ESP OFF Warning lamp

Steering wheel
angle sensor

Front wheel speed sensor

Rear wheel speed sensor

EJRF502D
 EJRF502U
BRAKE SYSTEM

HOT IN ON OR START
See Power PASSENGER
Distribution COMPARTMENT
JUNCTION
DIODE.2 FUSE 27 BLOCK
10A PHOTO 32 See Illuminations
PHOTO 36
9 I/P-L 3 I/P-B 1 I/P-C 8 I/PA 0.3P 0.3L
0.3P
1 4 M81 3 2 M58
JOINT ESP(VDC)
See Passenger SWITCH
0.5O 0.3L 0.3L Compartment Fuse Details CONNECTOR
PHOTO 58 ILL. PHOTO 30
OFF ON
3 5 M81
0.3P 0.3P
3 M08-2 1 M08-3 4 5 M58
INSTRUMENT
1 F33 CLUSTER A
BRAKE ABS ESP ESP PHOTO 35
PARKING OFF 0.3W 0.3W/B
WARNING
BRAKE ( ABS ) ESP To Steering
SWITCH ( ! )( P ) ESP Angle Sensor(2)
PHOTO 70 BRAKE OFF See Illuminations
EBD
11 12 14 15 M08-2
0.3Br 0.3P 0.3P 0.3O
33 29 28 EM01 18 17 5 EM02
PHOTO PHOTO 63
0.5L 0.5Br 0.5P 63 0.5P 0.5O 0.5W
36 12 13 46 44 31 E41
ESP
ESP CONTROL
Hand brake switch EBD warning ABS warning ESP warning ESP function ASR/FDR passive MODULE
lamp lamp lamp UNIT
Wheel speed PHOTO 24
sensor output(FR) FL SIG FL VCC FR SIG FR VCC RL SIG RL VCC RR SIG RR VCC
40 5 26 10 9 27 6 29 8 E41
0.5G 0.5O 0.5O 0.5W PHOTO 63
EB7C81E2

0.5O 1 2 3 4 EM02
59 JE02 0.5B 0.5Y 0.5R 0.5L 0.3G/O 0.3O 0.3L/B 0.3W
ENGINE 7 8 5 6 MF11
COMPARTMENT PHOTO 63
SWITCH 2 1 E45 2 1 E49 0.3G/O 0.3O 0.3L/B 0.3W
See Vehicle
PHOTO 7 1 2 F25 1 2 F26
ESP CIRCUIT DIAGRAM(1)

Speed Sensor
9 JC01
0.5P 0.5P
53 C44
PCM
PHOTO 22 LEFT FRONT RIGHT FRONT LEFT REAR RIGHT REAR
WHEEL SENSOR WHEEL SENSOR WHEEL SENSOR WHEEL SENSOR
PHOTO 1 PHOTO 5 PHOTO 82 PHOTO 82
BR -156
BR -157

EJRF502V
HOT AT ALL TIMES 13 I/P-C 0.5Y
ENGINE YAW RATE PASSENGER
COMPARTMENT SENSOR COMPARTMENT
JUNCTION PHOTO 70 JUNCTION
BLOCK BOX
STOP 122Ω 11 M05
FUSE PHOTO 7 PHOTO 32
15A DATA LINK
2 3 6 5 4 1 F19 CONNECTOR
From
22 JE02 Fuse 27(1) 13 I/P-A 3 M05
0.3W/B 0.3P/B 0.3G/B 0.3R/B 0.3Br/B A 0.3P 0.5W 0.5Y
0.5W
A : Closed with brake 6 7 10 9 8 MF61 11 MF71 PHOTO 29
1.25L pedal depressed PHOTO
B : Open with brake 29
pedal depressed
9 8 EM02 PHOTO 63
2 4 E62
STOP 0.3W/B 0.3P/B 0.3G/B 0.3R/B 0.3Br/B 0.3P 0.5Y 0.5W 0.5W 0.5Y
A B LAMP See Stop
ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM

SWITCH 13 18 E57
Lamps
PHOTO JOINT
39 2 4 3 M74 CONNECTOR
1 3 E62 PHOTO 61
STEERING 11 12 17 16 E57
ON/START LOW HIGH ANGLE
15 7 6 14 EM02 input
CAN SENSOR 0.5W 0.5Y
1.25G
PHOTO 40
Ground 2 17 JE02
ENGINE
10 E57 1 M74 COMPARTMENT
JOINT JUNCTION
See Stop CONNECTOR BLOCK
Lamps 0.3Br/B
PHOTO 61 47 67 JC01 PHOTO 7
2 E57
0.5W 0.5W 0.5Y
22 EM01 0.5Y
77 78 C44
PHOTO 63
0.5G PCM
0.5W/B 0.5P 0.5G/B 0.5R/B 0.5Br/B PHOTO 22
30 37 18 16 20 15 35 14 E41
ESP
CONTROL
Stop lamp Yaw rate Yaw rate Yaw rate Lateral Yaw rate CAN(High) CAN(Low) ESP MODULE
ESP CIRCUIT DIAGRAM(2)

switch sensor test sensor sensor signal ACC. sensor ground UNIT PHOTO 24
reference
 EJRF502W
BRAKE SYSTEM

HOT IN ON OR START HOT AT ALL TIMES

ENGINE
See Power COMPARTMENT
Distribution JUNCTION
BLOCK
ABS.1 ABS.2
PHOTO 25 ABS FUSIBLE FUSIBLE PHOTO 7
FUSE LINK 40A LINK 20A
MULTIPURPOSE 10A
CHECK CONNECTOR
15 E20
0.5G 62 61 66 JE02
DATA LINK PHOTO 31
CONNECTOR
34 EM02 PHOTO 63
1 M05
0.5G 0.75G 0.5P 3.0W 2.0R
37 EM02 21 EM01 PHOTO 63
0.75G 0.5L
28 11 2 3 E41
ESP
CONTROL
MODULE
PHOTO 24
Diagnosis Vbatt VRactuation ESP
motor relay UNIT
+ECU
DG
Motor HR- Valve
Ground monitoring actuation Moniitoring VO VI DT VS GND
C1
VALVE
6 8 5 7 2A 2B 4A 4B 3A 3B 1A 1B D0 BLOCK
MOTOR
RELAY
VALVE
T2 T1 IN OUT IN OUT IN OUT IN OUT RELAY
M DS T0
HSV2 HSV1 VSV2 VSV1 RR RL FR FL
ESP CIRCUIT DIAGRAM(3)

4 1 E41
2.0B 3.0B
G11 PHOTO 24
BR -158
ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM BR -159

ESP HECU CONNECTOR INPUT /

OUTPUT E603C607

Connector Terminal
Signal name Specifications Conditions
No Description
Current range : Min-10 A
1 Ground(Pump) GND Always
Max-20~39 A
Current range : Min-2.5A
4 Ground(Valve,ECU) GND Always
Max-5~15A
2 Supply voltage(Pump) Vb MOTOR
Battery voltage Always
3 Supply voltage(Valve) Vb VALVE
Wheel sensor
26 WP FL
voltage(FL)
Wheel sensor
9 WP FR
voltage(FR)
Battery voltage IG ON
Wheel sensor
6 WP RL
voltage(RL)
Wheel sensor
8 WP RR
voltage(RR)
Wheel sensor
5 WS FL
signal(FL)
Wheel sensor
10 WS FR
signal(FR) Voltage(High) : 0.89~1.26 V
RUNNING
Wheel sensor Voltage(Low) : 0.44~0.63 V
27 WS RL
signal(RL)
Wheel sensor
29 WS RR
signal(RR)
Diagnosis Voltage(High) : 0.8 * IG ON more HI-SCAN
11 DIAG’K’
Input/oupput Voltage(Low) : 0.2 * IG ON lower Communication
28 Ignition IG.KEY Battery voltage KEY ON/OFF
Voltage(High) : 0.6 * IG ON more
31 ESP Passive switch ESP Passive switch Switch ON/OFF
Voltage(Low) : 0.4 * IG ON lower
Voltage(High) : 0.7 * IG ON more
36 Hand brake switch Hand brake switch Switch ON/OFF
Voltage(Low) : 0.3 * IG ON lower
Voltage(High) : 4.1 V more
37 Yaw Rate Sensor Test Yaw Rate Sensor Test IG ON
Voltage(Low) : 1 V lower
Yaw Rate Sensor Yaw Rate Sensor
18 2.464 V ~ 2.536 V IG ON
Reference Reference
Yaw Rate Sensor Yaw Rate Sensor Offset voltage :2.5 Vrange : 0.35
16 IG ON
Signal Signal V ~ 4.65 V(-100~100 /s)
Acceleration Sensor Acceleration Sensor Offset voltage :2.5 Vrange : 0.35
20 IG ON
Signal Signal V ~ 4.65 V(-1.8g ~ 1.8g)
15 Yaw Rate Sensor Yaw Rate Sensor
GND LEVEL Always
Ground Ground
BR -160 BRAKE SYSTEM

Connector Terminal
Signal name Specifications Conditions
No Description
35 CAN High CAN High not communication:2.5 ± 0.5 V
communication :
Bus Level
[Volts]

IG ON
14 CAN Low CAN Low
Time
recessive dominant recessive

EJRF502L

BRAKE LIGHT BRAKE LIGHT voltage(High) : 0.8 * IG ON more

30 BRAKE ON/OFF
SWITCH SWITCH voltage(Low) : 0.3 * IG ON lower
ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM BR -161

NF ABS/ESP SENSOR OUTPUT LIST

DISPLAY(Hi-DS Scanner) Abbreviation Unit Remarks

1 ENGINE SPEED ENG. SPD RPM ESP ONLY
2 VEHICLE SPEED VEH. SPD Km/h
3 THROTTLE P. SNESOR TP. SNSR % ESP ONLY
4 SHIFT LEVER POSITION SHIFT POSI. - ESP ONLY
5 BATTERY VOLTAGE BATT. VOL V
6 WHEEL SPEED SNSR-FL FL WHEEL Km/h
7 WHEEL SPEED SNSR-FR FR WHEEL Km/h
8 WHEEL SPEED SNSR-RL RL WHEEL Km/h
9 WHEEL SPEED SNSR-RR RR WHEEL Km/h
10 ABS WARNING LAMP ABS LAMP -
11 EBD WARNING LAMP EBD LAMP -
12 ESP FUNCTION LAMP ESP LAMP - ESP ONLY
13 ESP OFF LAMP ESP OFF - ESP ONLY
14 ESP OFF SWITCH ESP SW - ESP ONLY
15 BRAKE LAMP SWITCH B/LAMP -
16 PUMP RELAY STATE PUMP RLY -
17 VALVE RELAY STATE VALVE RLY -
18 MOTOR MOTOR -
19 FL VALVE (IN) FL INLET -
20 FR VALVE (IN) FR INLET -
21 RL VALVE (IN) RL INLET -
22 RR VALVE (IN) RR INLET -
23 FL VALVE (OUT) FL OUTLET -
24 FR VALVE (OUT) FR OUTLET -
25 RL VALVE (OUT) RL OUTLET -
26 RR VALVE (OUT) RR OUTLET -
27 TCS VALVE(USV)1 USV1 - ESP ONLY
28 TCS VALVE(USV)1 USV2 - ESP ONLY
29 ESP VALVE(HSV1) HSV1 - ESP ONLY
30 ESP VALVE(HSV2) HSV2 - ESP ONLY
31 STEERING ANGLE SNSR SAS deg -720 ~ 720 (ESP ONLY)
32 YAW RATE SNSR-LATERAL LATERAL g -1.8 ~ 1.8 G(ESP ONLY)
-200 ~ 200 deg/s(ESP
33 YAW RATE SNSR-YAW YAW deg/S
ONLY)
34 PRESSURE SENSOR PRES. SNSR bar -42.5 ~ 425 bar(ESP ONLY)
35 PARKING BRAKE SIGNAL P/BRAKE - ESP ONLY
37 SAS CALIBRATED SAS CALI. - ESP ONLY
38 YAW RATE SENSOR TEST PASSED YAW TEST - ESP ONLY
BR -162 BRAKE SYSTEM

FAILURE DIAGNOSIS EC4E4E4C COUNTERMEASURES IN FAIL

1. In principle, ESP and TCS controls are prohibited in 1. Turn the system down and perform the following ac-
case of ABS failure. tions and wait for HECU power OFF.

2. When ESP or TCS fails, only the failed system control 2. Turn the valve relay off.
is prohibited.
3. Stop the control during the operation and do not exe-
3. However, when the solenoid valve relay should be cute any until the normal condition recovers.
turned off in case of ESP failure, refer to the ABS
WARNING LAMP ON
fail-safe.
1. ABS warning lamp turns on when ABS is fail.
4. Information on ABS fail-safe is identical to the fail-safe
in systems where ESP is not installed. 2. ESP operation lamp turns on when ESP is fail.
MEMORY OF FAIL CODE
When power voltage and valve relay voltage are abnormal,
1. It keeps the code as far as the backup lamp power is input/output related failure judgment is not made.
connected. (O)

2. It keeps the code as far 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 the failure is not detected now

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 ini-

tial 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.
ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM BR -163

YAW-RATE SENSOR

DESCRIPTION EE9CB3F8

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.

KJRE504E

SPECIFICATION

DESCRIPTION SPECIFICATION REMARKS

Nominal supply voltage 11.5 ~ 12.5 V
Supply voltage range 8 ~ 16 V
Supply current Max. 120 mA Typ. 75 mA
Reference Voltage Output 2.464 ~ 2.536 V Typ. 2.5 V
Operating temperature range -40 ~ 85
Yaw-late sensor +w direction, left turn Min.100 /s Typ. 111 /S
Measurement range
-w direction, right turn Min.100 /s Typ. 111 /S
Non-linearity -1 ~ 1 %
Offset (within life,within operating temperature) 3.75 /S
Upper cut-off frequency Min. 45 Hz Typ. 60 Hz
Lateral G sensor +y direction, left turn Min.1.8 g Typ. 2 g
Measurement range
-y direction, right turn Min. -1.8 g Typ. 2 g
Non-linearity -4 ~ 4 %
Offset (within life,within operating temperature) -0.09 ~ 0.09 g
Upper cut-off frequency Min. 20 Hz Typ. 40 Hz
BR -164 BRAKE SYSTEM

OUTPUT CHARACTERISTIC

Upper limitation Upper limitation

Lower limitation Lower limitation

Yaw-rate w in /s Acceleration a in g

EJRF502E

CIRCUIT DIAGRAM (YAW-RATE LATERAL G SENSOR)

IGN

IGN 1

3 2 1 Test 2 37
6 5 4 Yaw-rate reference 3 18

GND 4 15

Lateral G sensor signal 5 20

[Yaw-rate & lateral G sensor connector] Yaw-rate sensor signal 6 16

Yaw-rate & lateral G sensor ESP HECU

EJRF502F
ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM BR -165

ESP SWITCH

DESCRIPTION EA7AEFA9

1. The ESP OFF switch is for the user to turn off the ESP
system.

2. The ESP OFF lamp is on when ESP OFF switch is

engaged.

INSPECTION EC146ABF

1. Remove the ESP OFF switch from the switch panel

on the crushpad of the driver’s side.

2
*
5 4 3
*

EJRF502G

2. Check the continuity between the switch terminals as

the ESP OFF switch is engaged.

Terminal
2 5 3 4
Position

ON

OFF

EJRF502H
BR -166 BRAKE SYSTEM

STEERING WHEEL ANGLE MEASUREING PRINCIPLE

SPEED SENSOR A non contact, analog angle sensor carrying out abso-
lute measuring by the use of the Anisotropic-Magneto-Re-
DESCRIPTION EC8A2BA9 sistive effect (AMR).Measuring of the absolute angle by
means of a toothed measuring gear with magnetic prop-
GENERAL DATA erties in combination with different ratios. Corresponding
AMR elements that change their electrical resistance ac-
The steering angle speed sensor detects the angle of cording to the magnetic field direction detect the angle po-
the steering wheel in order to which direction a user sition of the measuring gears.A micro-controller decodes
chooses.The sensor is detached on the MPS(Mutil-Func- the measured voltage signals after A/D converting with the
tion Switch) under the steering wheel. help of a mathematical function. Output of the digital an-
gle value and velocity via CAN-interface.

SPECIFICATION

DESCRIPTION SPECIFICATION
Operating voltage 8 ~ 16 V
Operating temperature -40 ~ 85
Current consumption Max.150 mA
Steering angle velocity Max. ±2000 /sec
Connection delay time t 200 ms
Reverse voltage -13.5 V
Angle -780 ~ 779
Measuring range
Angular velocity 0 ~ 1016 /s
Nonlinearity angle -2.5 ~ +2.5
Hysteresis angle 0 ~ 5
Rotational friction torque measuring 10 /s

CIRCUIT DIAGRAM( STEERING WHEEL SPEED

ANGLE SENSOR)

ESP HECU
Steering wheel angle sensor

IG 2 IGN

GND 1 15

High 3 35

Low 4 14

3 2 1
4
* **
EJRF502I
ESP(ELECTRONIC STABILITY PROGRAM) SYSTEM BR -167

STEERING ANGLE SENSOR (SAS) CALCULATION

1. PURPOSE OF CALCULATION
- On vehicle control, a ESP analyzes the intention
of the driver.
- A ESP recognizes a steering angle which a driver
rotates through the steering angle sensor.
- A steering angle sensor used in ESP8 adjusts 0
setting of steering wheel through K-line or CAN
communication.

2. STEERING ANGLE SENSOR (SAS) CALIBRATION

METHOD

less than 1

less than 5

EJRF502J

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 Hi-scan to the vehicle.

3) Select Brake system.

4) Select Steering angle sensor(SAS) calculation.

5) Perform the Steering angle sensor(SAS) calcula-

tion.

6) Scanner OFF.

7) Remove the scanner from the vehicle.

8) Confirm the Steering angle sensor(SAS) calcu-

lation as driving the vehicle. (turn left once, turn
right once)