{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"BAT","section_name":"Brakes, ABS & TRAC Systems","page":133,"pages_in_section":167,"title":"Problem Symptoms Chart","section_header":"Brake System — Traction Control System (TRAC)","ocr_text":"BR–133\nBRAKE SYSTEM – TRACTION CONTROL SYSTEM (TRAC)\n\nPROBLEM SYMPTOMS CHART\n\nIf 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.\n\nSymptoms | Inspection Circuit | See page\n\nTRAC does not operate.\nOnly when 1. ~ 5, are all normal and the problem is still occurring, replace the TRAC ECU.\n1. Check the diagnostic trouble code, reconfirming that the Normal code is output | BR–126\n2. IG power source circuit. | BR–142\n3. Check the hydraulic circuit for leakage. | BR–165\n4. Speed sensor circuit. | BR–138\n5. Park/neutral position switch circuit. | AT1–81 or AT2–101\n\nTRAC indicator light abnormal.\n1. TRAC indicator light circuit.\n2. TRAC ECU. | BR–162\n\nTRAC OFF indicator light abnormal.\nOnly when 1. and 2. are all normal and the problem is still occurring, replace the TRAC ECU.\n1. TRAC OFF indicator light circuit. | BR–159\n2. TRAC cut switch circuit. | BR–159\n\nDiagnostic trouble code check cannot be performed.\nOnly when 1. and 2, are all normal and the problem is still occurring, replace the TRAC ECU.\n1. TRAC indicator light circuit | BR–162\n2. Tc terminal circuit. | 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