{"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":36,"pages_in_section":44,"title":"Check and Replace ECU","section_header":"Introduction — How to Troubleshoot ECU Controlled Systems","ocr_text":"IN–35\nINTRODUCTION – HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS\n\nCheck and Replace ECU\nFirst check the ECU ground circuit. If it is faulty, repair it. If it is nor-\nmal, the ECU could be faulty, so replace the ECU with a known\ngood one and check if the symptoms appear.\n\nExample\nGround\nIN0383\n\n(1) Measure the resistance between the ECU ground terminal\nand the body body ground.\nResistance: 1 Ω or less\n\nECU Side\nGround\nW/H Side\nGround\nGround\nIN0384\n\n(2) Disconnect the ECU connector, check the ground terminals\non the ECU side and wire harness side for bend and check\nthe contact pressure.","image":"https://tsrm.sasquatchvc.com/images/mk4/IN/IN_036.png","url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/36","prev":{"page":35,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/35","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/35"},"next":{"page":37,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/37","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/37"},"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."}