BR–133 BRAKE SYSTEM – TRACTION CONTROL SYSTEM (TRAC) 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 TRAC does not operate. Only when 1. ~ 5, are all normal and the problem is still occurring, replace the TRAC ECU. 1. Check the diagnostic trouble code, reconfirming that the Normal code is output | BR–126 2. IG power source circuit. | BR–142 3. Check the hydraulic circuit for leakage. | BR–165 4. Speed sensor circuit. | BR–138 5. Park/neutral position switch circuit. | AT1–81 or AT2–101 TRAC indicator light abnormal. 1. TRAC indicator light circuit. 2. TRAC ECU. | BR–162 TRAC OFF indicator light abnormal. Only when 1. and 2. are all normal and the problem is still occurring, replace the TRAC ECU. 1. TRAC OFF indicator light circuit. | BR–159 2. TRAC cut switch circuit. | BR–159 Diagnostic trouble code check cannot be performed. Only when 1. and 2, are all normal and the problem is still occurring, replace the TRAC ECU. 1. TRAC indicator light circuit | BR–162 2. Tc terminal circuit. | BR–163