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Kia Sedona (2008 year). Manual - part 4

STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING

Fig. 10: Standard Flow Of Diagnostic Troubleshooting Chart
Courtesy of KIA MOTORS AMERICA, INC.

NOTES WITH REGARD TO DIAGNOSIS

The phenomena listed in the following table are not abnormal.

TROUBLESHOOTING REFERENCE CHART

Valve relay state

VALVE RLY

Motor

MOTOR

Front Left valve (IN)

FL INLET

Front Right valve (IN)

FR INLET

Rear Left valve (IN)

RL INLET

Rear Right valve (IN)

RR INLET

Front Left valve (OUT)

FL OUTLET

Front Right valve (OUT) FR OUTLET

Rear Left valve (OUT)

RL OUTLET

Rear Right valve (OUT) RR OUTLET

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

2008 Kia Sedona

2008 BRAKES ABS (Anti-Lock Brake System) - Sedona

Microsoft

Saturday, May 22, 2010 6:52:41 PM

Page 13

SCAN TOOL CHECK

1. Turn the ignition switch OFF.

2. Connector the Scan tool to the 16P data link connector located the driver's side kick panel.

Fig. 11: Connecting HI-Scan Pro Connector To Data Link Connector
Courtesy of KIA MOTORS AMERICA, INC.

3. Turn the ignition switch ON.

4. Check for DTC using the Scan tool

5. After completion trouble of the repair or correction of the problem, erase the stored fault codes using the

scan tool.

6. Disconnect the Scan tool from the 16P data link connector.

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.

2008 Kia Sedona

2008 BRAKES ABS (Anti-Lock Brake System) - Sedona

Microsoft

Saturday, May 22, 2010 6:52:41 PM

Page 14

ABS CHECK SHEET

Fig. 12: ABS Check Sheet
Courtesy of KIA MOTORS AMERICA, INC.

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.

2008 Kia Sedona

2008 BRAKES ABS (Anti-Lock Brake System) - Sedona

Microsoft

Saturday, May 22, 2010 6:52:41 PM

Page 15

PROBLEM SYMPTOMS TABLE

ABS DOES NOT OPERATE

DETECTING CONDITION

DETECTING CONDITION CHART

Symptom

Suspect Area

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 system is operating to

specifications.

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 system is operating to

specifications.

2. Wheel speed sensor circuit.

3. Stop lamp switch circuit.

4. Check the hydraulic circuit for leakage.

Communication with Scan tool is
not possible.
(Communication with any system
is not possible)

1. Power source circuit

2. Diagnosis line

Communication with Scan tool is
not possible.
(Communication with ABS only
is not possible)

1. Power source circuit

2. Diagnosis line

3. HECU

When ignition key is turned ON
(engine OFF), the ABS warning
lamp does not light up.

1. ABS warning lamp circuit

2. HECU

Even after the engine is started,
the ABS warning lamp remains
ON.

1. ABS warning lamp circuit

2. HECU

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.

Trouble Symptoms

Possible Cause

2008 Kia Sedona

2008 BRAKES ABS (Anti-Lock Brake System) - Sedona

Microsoft

Saturday, May 22, 2010 6:52:41 PM

Page 16

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