{"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":24,"pages_in_section":44,"title":"Introduction","section_header":"Introduction — How to Troubleshoot ECU Controlled Systems","ocr_text":"IN–23\nINTRODUCTION – HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS\n\nTaking into account the above points, a flow chart showing how to proceed with troubleshooting using the diagnostic trouble code check is shown below. This flow chart shows how to utilize the diagnostic trouble code check effectively, then by carefully checking the results, indicates how to proceed either to diagnostic trouble code troubleshooting or to troubleshooting of problem symptoms.\n\nDiagnostic trouble code check\n\nMaking a note of and clearing of the diagnostic trouble codes displayed\n\nSymptom confirmation\nProblem symptoms exist\nNo problem symptoms exist\n\nSimulation test using the symptom simulation methods\n\nDiagnostic trouble code check\n\n• Diagnostic trouble code displayed\n• Problem symptoms exist\n\n• Normal code displayed\n• Problem symptoms exist\n\n• Normal code displayed\n• No Problem symptoms exist\n\nTroubleshooting of problem indicated by diagnostic rouble code\n\nTroubleshooting of each problem symptom\n\nSystem Normal\nIf a diagnostic trouble code was displayed in the initial diagnostic trouble code check, it indicates that the trouble may have occurred in a wire harness or connector in that circuit in the past. Therefore, check the wire harness and connectors (See page IN–30).","image":"https://tsrm.sasquatchvc.com/images/mk4/IN/IN_024.png","url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/24","prev":{"page":23,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/23","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/23"},"next":{"page":25,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/25","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/25"},"section_url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/1","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/2","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/3","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/4","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/5","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/6","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/7","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/8","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/9","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/10","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/11","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/12","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/13","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/14","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/15","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/16","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/17","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/18","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/19","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/20","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/21","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/22","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/23","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/24","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/25","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/26","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/27","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/28","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/29","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/30","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/31","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/32","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/33","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/34","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/35","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/36","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/37","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/38","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/39","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/40","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/41","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/42","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/43","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/44"],"note":"OCR transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}