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Home >> Kia >> 2009 >> Optima L4-2.4L >> Repair and Diagnosis >> Brakes and Traction Control >> Antilock Brakes / Traction Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> ABS Does Not Operate (Intermittently)
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ABS Does Not Operate (Intermittently)








Detecting Condition






Inspection Procedures
DTC Inspection
1. Connect the scan tool with the data link connector and turn the ignition switch ON.
2. Verify that the normal code is output.
3. Is the normal code output?






Check the Wheel Speed Sensor Circuit
1. Refer to the DTC troubleshooting procedures.
2. Is it normal?






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.
2. Measure the voltage between terminal 14 of the ABS control module harness side connector and body ground when brake pedal is depressed.

Specification : approximately B+


3. Is the voltage within specification?










Check the Hydraulic Circuit for Leakage
1. Refer to the hydraulic lines.
2. Inspection leakage of the hydraulic lines.
3. Is it normal?




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