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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 TABLE

Symptom Suspect Area Refer To
ABS does not operate. Only when 1.-4. are all normal and the problem is still occurring, replace the ABS ECU.
  1. Check the DTC reconfirming that the normal code is output.
  2. IG power source circuit.
  3. Speed sensor circuit.
  4. Check the hydraulic circuit for leakage.
  1. PRE-CHECK 
  2. DTC 41: IG Power Source Circuit 
  3. DTC 31, 32, 33, 34: Speed Sensor Circuit 
  4. Check for Fluid Leakage 
ABS does not operate intermittently. Only when 1.-4. are all normal and the problem is still occurring, replace the ABS ECU.
  1. Check the DTC reconfirming that the normal code is output.
  2. Speed sensor circuit.
  3. Stop light switch circuit.
  4. Check the hydraulic circuit for leakage.
  1. PRE-CHECK 
  2. DTC 31, 32, 33, 34: Speed Sensor Circuit 
  3. DTC 49: Stop Light Switch Circuit 
  4. Check for Fluid Leakage 
ABS warning light abnormal.
  1. ABS warning light circuit.
  2. ABS ECU.
  1. ABS Warning Light Circuit 
  2. -
DTC check cannot be done. Only when 1. and 2. are all normal and the problem is still occurring, replace the ABS ECU.
  1. ABS warning light circuit.
  2. Tc terminal circuit.
  1. ABS Warning Light Circuit 
  2. Tc Terminal Circuit 
Speed sensor signal check cannot be done.
  1. Ts terminal circuit.
  2. ABS ECU.
  1. Ts terminal circuit. 
  2. -
 
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