TIBURON(GK) >2008 > G 2.0 DOHC > Brake System > ABS(Anti-Lock Brake System)>Troubleshooting  
TROUBLESHOOTING
STANDARD FLOW OF DIAGNSTIC TROUBLESHOOTING

NOTES WITH REGARD TO DIAGNOSIS
The phenomena listed in the following table are not abnormal.
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.

ABS CHECK SHEET

PROBLEM SYMPTOMS TABLE
Symptom
Suspect Area
See 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.
2.
Power source circuit.
3.
Speed sensor circuit.
4.
Check the hydraulic circuit for leakage.
BR - 75
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.
2.
Wheel speed sensor circuit.
3.
Stop lamp switch circuit.
4.
Check the hydraulic circuit for leakage.
BR - 77
Communication with scan tool is not possible.
(Communication with any system is not possible)
1.
Power source circuit
2.
Diagnosis line
BR - 79
Communication with scan tool is not possible.
(Communication with ABS only is not possible)
1.
Power source circuit
2.
Diagnosis line
3.
HECU
BR - 80
When ignition key is turned ON (engine OFF), the ABS warning lamp does not light up.
1.
ABS warning lamp circuit
2.
HECU
BR - 81
Even after the engine is started, the ABS warning lamp remains ON.
1.
ABS warning lamp circuit
2.
HECU
BR - 82
Brake warning lamp is abnormal.
1.
Brake oil level sensor
2.
Parking brake switch
3.
Brake warning lamp circuit
BR - 83

During ABS operation, the brake pedal may vibrate or may not be able to be depressed. Such phenomena are due to intermittent changes in hydraulic pressure inside the brake line to prevent the wheels from locking and is not an abnormality.

BLEEDING OF BRAKE SYSTEM
This procedure should be followed to ensure adequate bleeding of air and filling of the ABS unit, brake lines and master cylinder with brake fluid.
1.
Remove the reservoir cap and fill the brake reservoir with brake fluid.
If there is any brake fluid on any painted surface, wash it off immediately.
When pressure bleeding, do not depress the brake pedal.
Recommended fluid........ DOT3 or DOT4
2.
Connect a clear plastic tube to the wheel cylinder bleeder plug and insert the other end of the tube into a half filled clear plastic bottle.

3.
Connect the scan tool to the data link connector located underneath the dash panel.

4.
Select and operate according to the instructions on the scan tool screen.
You must obey the maximum operating time of the ABS motor with the scan tool to prevent the motor pump from burning.
(1)
Select hyundai vehicle diagnosis.
(2)
Select vehicle name.
(3)
Select Anti-Lock Brake system.
(4)
Select air bleeding mode.
(5)
Press "YES" to operate motor pump and solenoid valve.

(6)
Wait 120 sec. before operating the air bleeding.
(If not, you may damage the motor.)

(7)
Peform the air bleeding.

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.

7.
Tighten the bleeder screw.

Bleed screw tightening torque:
7~13 Nm (70 ~130 kg•cm, 5.1 ~ 9.5 lb•ft)

DIAGNOSTIC TROUBLE CODE CHART(DTC)
●:ON ○:OFF
DTC No.
Detection Item
Warning Lamp(On/Off)
Page
EBD
ABS
ESC

C1101
Battery voltage high




C1102
Battery voltage low
○/●



C1112
Sensor power voltage




C1200
Wheel speed sensor FR-LH open/short
○/●



C1201
Wheel speed sensor FR-LH range/performance/intermittent
○/●



C1202
Wheel speed sensor FR-LH invalid/no signal
○/●



C1203
Wheel speed sensor FR-RH open/short
○/●



C1204
Wheel speed sensor FR-RH range/performance/intermittent
○/●



C1205
Wheel speed sensor FR-RH invalid/no signal
○/●



C1206
Wheel speed sensor RR-LH open/short
○/●



C1207
Wheel speed sensor RR-LH range/performance/intermittent
○/●



C1208
Wheel speed sensor RR-LH invalid/no signal
○/●



C1209
Wheel speed sensor RR-RH open/short
○/●



C1210
Wheel speed sensor RR-RH range/performance/intermittent
○/●



C1211
Wheel speed sensor RR-RH invalid/no signal
○/●



C1235
Pressure sensor(primary) - electrical




C1237
Pressure sensor(secondary) - electrical




C1259
Steering angle sensor - electrical




C1260
Steering angle sensor - signal




C1282
Yaw rate & lateral G sensor - electrical




C1283
Yaw rate & lateral G sensor - signal




C1503
ESC switch error




C1513
Brake switch error




C1604
ECU hardware error




C1605
CAN harware error




C1611
CAN time-out EMS




C1612
CAN time-out TCU




C1613
CAN wrong message




C1616
CAN bus off




C2112
Valve relay error




C2227
Excessive temperature of brake disc




C2380
ABS/TCS/ESC valve error




C2402
Motor - electrical