{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"IN","section_name":"Introduction","page":28,"pages_in_section":44,"title":"Matrix Chart of Problem Symptoms","section_header":"Introduction — How to Troubleshoot ECU Controlled Systems","ocr_text":"[5] MATRIX CHART OF PROBLEM SYMPTOMS\nThe suspect circuits or parts for each problem symptom are shown in the table below. Use this table to trouble-shoot the problem when a \"Normal\" code is displayed in the diagnostic trouble code check but the problem is still occurring. Numbers in the table indicate the inspection order in which the circuits or parts should be checked.\nHINT: When the problem is not detected by the diagnostic system even though the problem symptom is present, it is considered that the problem is occurring outside the detection range of the diagnostic system, or that the problem is occurring in a system other than the diagnostic system.\n\n• Page\nIndicates the page where the flow chart for each circuit is located.\n\n• Problem Symptom\n\n• Circuit or Part Name\nIndicates the circuit or part which needs to be checked.\n\nMATRIX CHART OF PROBLEM SYMPTOMS\n\nWhen the malfunction code is not confirmed in the diagnostic trouble code check and the problem still can not be confirmed in the basic inspection, proceed to this matrix chart and troubleshoot according to the numbered order given below.\n\nSee page\nEG-438\nEG-448\nEG-453\nEG-480\nEG-463\nEG-465\nEG-470\nEG-472\nEG-475\nEG-457\nEG-481\nAC-62\nST-3, 12\nIG-4\nIG-5\nIG-7\nEG-9\nAT-81\nBE-123\nIN-35\n\nSuspect area\nVolume air flow meter circuit\nStarter signal circuit\nEGR system\nSwitch condition signal circuit\nPark/neutral position switch circuit\nECM power source circuit\nBack up power source circuit\nInjector circuit\nIAC valve circuit\nFuel pump control circuit\nVSV circuit for fuel pressure control\nA/C signal circuit (Compressor circuit)\nStarter and Starter relay\nIgnition signal circuit (Spark test)\nSpark plug\nIgnition coil\nDistributor\nCompression\nA/T faulty\nTheft deterrent ECU\nEngine control module (ECM)\n\nSymptom\n\nDoes not start\nEngine does not crank\n2\n1\n3\n\nNo initial combustion\n1\n5\n3\n2\n4\n\nNo complete combustion\n6\n1\n5\n4\n2\n3\n\ncult to\nEngine cranks normally\n1\n8\n2\n3\n6\n4\n5\n7\n\nCold engine\n1\n4\n2\n3\n7\n5\n6\n1\n5\n2\n4\n3\n8\n1\n2\n1\n5\n4\n6\n2\n3\n4\n8\n6\n1\n2\n5\n3\n4\n8\n6\n1\n\n• Circuit Inspection, Inspection Order\nIndicates the circuit which needs to be checked for each problem symptom. 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