10480228

STANDARD FLOW OF DIAGNOSTIC 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.

HI-SCAN (PRO) CHECK

Turn the ignition switch OFF.

Connector the Hi-scan(pro) to the 16P data link connector located the driver's side kick panel.

Turn the ignition switch ON.

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

After completion trouble of the repair or correction of the problem, erase the stored fault codes the clear key on the Hi-scan(pro).

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

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 Hi-scan (pro) is not possible. (Communication with any system is not possible)	1. Power source circuit 2. Diagnosis line	BR - 79
Communication with Hi-scan (pro) 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

caution

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

DETECTING CONDITION

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

INSPECTION PROCEDURES

DTC INSPECTION

Connect the Hi-Scan (pro) with the data link connector and turn the ignition switch ON.

Verify that the normal code is output.

Is the normal code output?

▶ Check the power source circuit.

▶ Erase the DTC and recheck using Hi-Scan (pro).

CHECK THE POWER SOURCE CIRCUIT.

Disconnect the connector from the ABS control module.

Turn the ignition switch ON, measure the voltage between terminal 18 of the ABS control module harness side connector and body ground.

Specification: approximately B+

Is the voltage within specification?

▶ Check the ground circuit.

▶ Check the harness or connector between the fuse (10A) in the engine compartment junction block and the ABS control module. Repair if necessary.

CHECK THE GROUND CIRCUIT.

Disconnect the connector from the ABS control module.

Check for continuity between terminals 1,4 of the ABS control module harness side connector and ground point.

Is there continuity?

▶ Check the wheel speed sensor circuit.

▶ Repair an open in the wire and ground point.

CHECK THE WHEEL SPEED SENSOR CIRCUIT.

Refer to the DTC troubleshooting procedures.

Is it normal?

▶ Check the hydraulic circuit for leakage.

▶ Repair or replace the wheel speed sensor.

CHECK THE HYDRAULIC CIRCUIT FOR LEAKAGE.

Refer to the hydraulic lines.

Inspect leakage of the hydraulic lines.

Is it normal?

▶ The problem is still occurring, replace the ABS control module.

▶ Repair the hydraulic lines for leakage.

DETECTING CONDITION

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

INSPECTION PROCEDURES

DTC INSPECTION

Connect the Hi-Scan (pro) with the data link connector and turn the ignition switch ON.

Verify that the normal code is output.

Is the normal code output?

▶ Check the wheel speed sensor circuit.

▶ Erase the DTC and recheck using Hi-Scan (pro).

CHECK THE WHEEL SPEED SENSOR CIRCUIT.

Refer to the DTC troubleshooting procedures.

Is it normal?

▶ Check the stop lamp switch circuit.

▶ Repair or replace the wheel speed sensor.

CHECK THE STOP LAMP SWITCH CIRCUIT.

Check that stop lamp lights up when brake pedal is depressed and turns off when brake pedal is released.

Measure the voltage between terminal 20 of the ABS control module harness side connector and body ground when brake pedal is depressed.

Specification: approximately B+

Is the voltage within specification?

▶ Check the hydraulic circuit for leakage.

▶ Repair the stop lamp switch. Repair an open in the wire between the ABS control module and the stop lamp switch.

CHECK THE HYDRAULIC CIRCUIT FOR LEAKAGE.

Refer to the hydraulic lines.

Inspect leakage of the hydraulic lines.

Is it normal?

▶ The problem is still occurring, replace the ABS control module.

▶ Repair the hydraulic lines for leakage.

DETECTING CONDITION

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

INSPECTION PROCEDURES

CHECK THE POWER SUPPLY CIRCUIT FOR THE DIAGNOSIS

Measure the voltage between terminal 9 of the data link connector and body ground.

Specification: approximately B+

Is voltage within specification?

▶ Check the ground circuit for the diagnosis.

▶ Repair an open in the wire. Check and replace fuse (15A) from the engine compartment junction block.

CHECK THE GROUND CIRCUIT FOR THE DIAGNOSIS

Check for continuity between terminal 5 of the data link connector and body ground.

Is there continuity?

▶ Repair an open in the wire between terminal 5 of the data link connector and ground point.

DETECTING CONDITION

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

INSPECTION PROCEDURES

CHECK FOR CONTINUITY IN THE DIAGNOSIS LINE

Disconnect the connector from the ABS control module.

Check for continuity between terminals 11 of the ABS control module connector and 1 of the data link connector.

Is there continuity?

▶ Check the power source of ABS control module.

▶ Repair an open in the wire.

CHECK THE POWER SOURCE OF ABS CONTROL MODULE

Disconnect the connector from the ABS control module.

Turn the ignition switch ON, measure the voltage between terminal 18 of the ABS control module harness side connector and body ground.

Specification: approximately B+

Is voltage within specification?

▶ Check for poor ground.

▶ Check the harness or connector between the fuse (10A) in the engine compartment junction block and the ABS control module.Repair if necessary.

CHECK FOR POOR GROUND

Check for continuity between terminal 5 of the data link connector and ground point.

▶ Replace the ABS control module and recheck.

▶ Repair an open in the wire or poor ground.

DETECTING CONDITION

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

INSPECTION PROCEDURES

PROBLEM VERIFICATION

Disconnect the connector from the ABS control module and turn the ignition switch ON.

Does the ABS warning lamp light up?

▶ It is normal. Recheck the ABS control module.

▶ Check the power source for the ABS warning lamp.

CHECK THE POWER SOURCE FOR THE ABS WARNING LAMP

Disconnect the instrument cluster connector and turn the ignition switch ON.

Measure the voltage between terminal 5 of the cluster harness side connector and body ground.

Specification: approximately B+

Is voltage within specification?

▶ Repair bulb or instrument cluster assembly.

▶ Check for blown fuse.

CHECK FOR BLOWN FUSE

Check continuity of fuse (10A) from the engine compartment junction block.

Is there continuity?

▶ Repair an open in the wire between ABS fuse and 1 of cluster connector.

▶ Replace the blown fuse.

DETECTING CONDITION

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

INSPECTION PROCEDURES

CHECK DTC OUTPUT.

Connect the Hi-Scan (pro) to the 16P data link connector located behind the driver's side kick panel.

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

Is DTC output?

▶ Repair circuit indicated by code output.

▶ Check instrument cluster.

CHECK INSTRUMENT CLUSTER

Disconnect the cluster connector and turn the ignition switch ON.

Does the ABS warning lamp remains ON?

▶ Replace the instrument cluster.

▶ 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?

▶ Replace the ABS control module and recheck.

▶ Repair an open in the wire between cluster and ABS control module.

BLEEDING OF BRAKE SYSTEM

Remove the reservoir cap and fill the brake reservoir with brake fluid.

caution

If there is any brake fluid on any painted surface, wash it off immediately.

note

When pressure bleeding, do not depress the brake pedal.

Recommended fluid........ DOT3 or DOT4

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.

Connect the hi-scan (pro) to the data link connector located underneath the dash panel.

Select and operate according to the instructions on the hi-scan (Pro) screen.

caution

You must obey the maximum operating time of the ABS motor with the hi-scan (Pro) 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 60 sec. before operating the air bleeding. (If not, you may damage the motor.)

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.

Repeat step 5 until there are no more bubbles in the fluid for each wheel.

Tighten the bleeder screw.

Bleed screw tightening torque:

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

DIAGNOSTIC TROUBLE CODE CHART(DTC)

DTC	DESCRIPTION	WARNING LAMP			REMARK	SEE PAGE
DTC	DESCRIPTION	ABS	EBD	ESC	REMARK	SEE PAGE
C1101	BATTERY VOLTAGE HIGH	О	О	О
C1102	BATTERY VOLTAGE LOW	О		О
C1200	FL WHEEL SPEED SENSOR- OPEN/SHORT	О		О
C1201	FL WHEEL SENSOR- RANGE/ PERFORMANCE	О		О
C1202	FL WHEEL WHEEL SPEED SENSOR-NO SIGNAL	О		О
C1203	FR WHEEL SPEED SENSOR- OPEN/SHORT	О		О
C1204	FR WHEEL SENSOR- RANGE/ PERFORMANCE	О		О
C1205	FR WHEEL SPEED SENSOR-NO SIGNAL	О		О
C1206	RL WHEEL SPEED SENSOR- OPEN/SHORT	О		О
C1207	RL WHEEL SENSOR- RANGE/ PERFORMANCE	О		О
C1208	RL WHEEL SPEED SENSOR-NO SIGNAL	О		О
C1209	RR WHEEL SPEED SENSOR- OPEN/SHORT	О		О
C1210	RR WHEEL SENSOR- RANGE/ PERFORMANCE	О		О
C1211	RR WHEEL SPEED SENSOR-NO SIGNAL	О		О
C1213	WHEEL SPEED FREQUENCY ERROR	О		О
C1235	PRESSURE SENSOR-ELECTRICAL			О	ESP
C1237	PRESSURE SENSOR-SIGNAL FAULT			О	ESP
C1260	STEERING ANGLE SENSOR-SIGNAL			О	ESP
C1261	STEERING ANGLE SENSOR NOT CALIBRATED			О	ESP
C1282	YAW RATE ＆ LATERAL G SENSOR-ELECTRICAL			О	ESP
C1283	YAW RATE ＆ LATERAL G SENSOR-SIGNAL			О	ESP
C1503	ESP SWITCH ERROR			О	ESP
C1513	BRAKE LIGHT SWITCH MALFUNCTION			О
C1604	ECU HARDWARE ERROR	О	О	О
C1605	CAN CONTROL HARDWARE ERROR			О	ESP
C1611	CAN TIME OUT-ECM			О	ESP
C1612	CAN TIME OUT-TCU			О	ESP
C1616	CAN BUS OFF			О	ESP
C1623	CAN TIMEOUT STEERING ANGLE SENSOR			О	ESP
C1625	CAN TIME OUT-ESC			О	ESP
C1626	IMPLAUSIBLE CONTROL	О		О	ESP
C1702	VARIANT CODING	О	О	О	ESP
C2112	VALVE RELAY MALFUNCTION	О	О	О
C2308	FL INLET VALVE MALFUNCTION	О	О	О
C2312	FL OUTLET VALVE MALFUNCTION	О	О	О
C2316	FR INLET VALVE MALFUNCTION	О	О	О
C2320	FR OUTLET VALVE MALFUNCTION	О	О	О
C2324	RL INLET VALVE MALFUNCTION	О	О	О
C2328	RL OUTLET VALVE MALFUNCTION	О	О	О
C2332	RR INLET VALVE MALFUNCTION	О	О	О
C2336	RR OUTLET VALVE MALFUNCTION	О	О	О
C2366	TC VALVE PRIMARY(USV1) ERROR	О	О	О	ESP
C2370	TC VALVE SECONDARY (USV2) ERROR	О	О	О	ESP
C2372	ESP VALVE 1(HSV1) ERROR	О	О	О	ESP
C2374	ESP VALVE 2 (HSV2) ERROR	О	О	О	ESP
C2402	MOTOR-ELECTRICAL	О	О	О