ANTI-LOCK BRAKE SYSTEM > PROBLEM SYMPTOMS TABLE

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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.

NOTICE:
When replacing the skid control ECU, sensor, etc., turn the ignition switch off.

HINT:
  1. Inspect the fuses and relays before investigating the suspected areas as shown in the table below.
  2. Inspect each malfunction circuit in numerical order for the corresponding symptoms.

ANTI-LOCK BRAKE SYSTEM 
Symptom
Suspected Area
See page
ABS does not operate
1. Check the DTC reconfirming that the normal system code is output
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2. IG power source circuit
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3. Front speed sensor circuit
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4. Rear speed sensor circuit
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5. Check the brake actuator assembly with the intelligent tester (Check brake actuator assembly operation using the active test function) If abnormal, check the hydraulic circuit for leakage
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6. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU)
 Click here
ABS does not operate efficiently
1. Check the DTC reconfirming that the normal system code is output
 Click here
2. Front speed sensor circuit
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3. Rear speed sensor circuit
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4. Stop light switch circuit
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5. Check the brake actuator assembly with the intelligent tester (Check brake actuator assembly operation using the active test function)
 Click here
6. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU)
 Click here
ABS warning light malfunction (Remains on)
1. ABS warning light circuit
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2. Brake actuator assembly (skid control ECU)
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ABS warning light malfunction (Does not come on)
1. ABS warning light circuit
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Brake warning light malfunction (Remains on)
1. Brake warning light circuit
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2. Brake actuator assembly (skid control ECU)
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Brake warning light malfunction (Does not come on)
1. Brake warning light circuit
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2. Brake actuator assembly
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ABS sensor DTC check cannot be done
1. Check the DTC reconfirming that the normal system code is output
 Click here
2. TS and CG terminal circuit
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3. TC and CG terminal circuit
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4. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU)
 Click here