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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.

PROBLEM SYMPTOMS CHART

Symptom Suspect Area See page
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 normal code is output.
  2. Power source circuit.
  3. Speed sensor circuit.
  4. Check the hydraulic circuit for leakage.
 BR - 75
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 normal code is output.
  2. Wheel speed sensor circuit.
  3. Stop lamp switch circuit.
  4. Check the hydraulic circuit for leakage.
 BR - 77
Communication with Hi-scan (pro) is not possible.
(Communication with any system is not possible)
  1. Power source circuit
  2. Diagnosis line
 BR - 79
Communication with Hi-scan (pro) is not possible.
(Communication with ABS only is not possible)
  1. Power source circuit
  2. Diagnosis line
  3. HECU
 BR - 80
When ignition key is turned ON (engine OFF), the ABS warning lamp does not light up.
  1. ABS warning lamp circuit
  2. HECU
 BR - 81
Even after the engine is started, the ABS warning lamp remains ON.
  1. ABS warning lamp circuit
  2. HECU
 BR - 82
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.
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