Kia Sorento 2011 Manual Del Usuario página 963

Second Generation XM (2011-2015) / Kia Sorento XM 2011-2015 Service Manual / Brake System
Kia Sorento: Brake System - ESC(Electronic Stability Control) System - Failure Diagnosis
1. In principle, ESC and TCS controls are prohibited in case of ABS failure.
2. When ESC or TCS fails, only the failed system control is prohibited.
3. However, when the solenoid valve relay should be turned off in case of ESC failure, refer to the ABS fail-safe.
4. Information on ABS fail-safe is identical to the fail-safe in systems where ESC is not installed. Memory of Fail Code
1. It keeps the code as far as the backup lamp power is 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. Countermeasures in Fail
1. Turn the system down and perform the following actions and wait for HECU power OFF.
2. Turn the valve relay off.
3. Stop the control during the operation and do not execute any until the normal condition recovers. Warning Lamp ON
1. ESC warning lamp turn on for 3sec after IGN ON.
2. ESC function lamp blinks when ESC Act.
3. If ESC fail occured, ESC warning turns ON.
ESC OFF lamp turn on in case of
A. ESC Switch OFF
B. 3sec after IGN ON
4.
Standard Flow of Diagnostic Troubleshooting
Notes With Regard To Diagnosis
The phenomena listed in the following table are not abnormal.
Condition
System check sound
ABS operation sound
ABS operation (Long braking distance)
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
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.
1. Sound of the motor inside the ABS hydraulic unit operation (whine).
2. Sound is generated along with vibration of the brake pedal (scraping).
When ABS operates, sound is generated from the vehicle chassis due to repeated brake
application and release (Thump : suspension; squeak: tires)
3.
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.
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Explanation