BR–64 BRAKE SYSTEM – ANTI–LOCK BRAKE SYSTEM (ABS) PROBLEM SYMPTOMS CHART If a normal code is displayed during the diagnostic trouble code 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. Symptoms | Inspection Circuit | See page ABS does not operate. Only when 1. ~ 4. are all normal and the problem is still occurring, replace the ABS (& TRAC) ECU. 1. Check the diagnostic trouble code, reconfirming that the normal code is output. 2. IG power source circuit. 3. Speed sensor circuit. 4. Check the ABS actuator with a checker. If abnormal, check the hydraulic circuit for leakage (See page BR–115). BR–54 BR–92 BR–88 BR–44 ABS does not operate efficiently Only when 1. ~ 4. Are all normal and the problem is still occurring, replace the ABS (& TRAC) ECU. 1. Check the diagnostic trouble code, reconfirming that the normal code is output. 2. Speed sensor circuit. 3. Stop light switch circuit. 4. Check the ABS actuator with a checker. If abnormal, check the hydraulic circuit for leakage (See page BR–115). BR–54 BR–88 BR–105 BR–44 ABS warning light abnormal 1. ABS warning light circuit. 2. ABS (& TRAC) ECU. BR–107 Diagnostic trouble code check cannot be performed Only when 1 and 2 are all normal and the problem is still occurring, replace the ABS (& TRAC) ECU. 1. ABS warning light circuit. 2. Tc terminal circuit. BR–107 BR–112 Speed sensor signal check cannot be performed 1. Ts terminal circuit. 2. ABS (& TRAC) ECU. BR–114