Kia Sorento 2011 Manual Del Usuario página 966

Second Generation XM (2011-2015) / Kia Sorento XM 2011-2015 Service Manual / Brake System
Detecting condition
Trouble Symptoms
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 ESC control module.
Inspection procedures
DTC Inspection
1. Connect the GDS with the data link connector and turn the ignition switch ON.
2. Verify that the DTC code is output.
Is the DTC code output?
▶ Check the wheel speed sensor circuit. ▶ Check the wheel speed sensor circuit.
▶ Erase the DTC and recheck using GDS. ▶ Erase the DTC and recheck using GDS.
3.
Check the wheel speed sensor circuit
1. Refer to the DTC troubleshooting procedures.
Is it normal?
▶ Check the stop lamp switch circuit. ▶ Check the stop lamp switch circuit.
▶ Repair or replace the wheel speed sensor. ▶ Repair or replace the wheel speed sensor.
2.
Check the stop lamp switch circuit
1. Check that stop lamp lights up when brake pedal is depressed and turns off when brake pedal is released.
Measure the voltage between terminal 23 of the ESC control module harness side connector and body ground when brake pedal is depressed.
Specification : approximately B+ Specification : approximately B+
2.
Is the voltage within specification?
▶ Check the hydraulic circuit for leakage. ▶ Check the hydraulic circuit for leakage.
▶ Repair the stop lamp switch. Repair an open in the wire between the ESC control module and the stop lamp switch. ▶ Repair the stop lamp switch. Repair an open in the wire between the ESC control module and the stop lamp switch.
3.
Check the hydraulic circuit for leakage
1. Refer to the hydraulic lines.
2. Inspection leakage of the hydraulic lines.
Is it normal?
▶ The problem is still occurring, replace the ESC control module. ▶ The problem is still occurring, replace the ESC control module.
▶ Repair the hydraulic lines for leakage. ▶ Repair the hydraulic lines for leakage.
3.
Detecting condition
Trouble Symptoms
Possible defect in the power supply system (including ground) for the diagnosis line.
Inspection procedures
Check The Power Supply Circuit For The Diagnosis
Measure the voltage between terminal 16 of the data link connector and body ground.
Specification : approximately B+ Specification : approximately B+
1.
Possible Cause
- Faulty power source circuit
- Faulty wheel speed sensor circuit
- Faulty hydraulic circuit for leakage
- Faulty HECU
Possible Cause
- An open in the wire
- Poor ground
- Faulty power source circuit
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