{"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":34,"pages_in_section":44,"title":"Introduction","section_header":"Introduction — How to Troubleshoot ECU Controlled Systems","ocr_text":"(b) Voltage Check\nIn a circuit in which voltage is applied (to the ECU connector terminal), an open circuit can be checked for\nby conducting a voltage check.\n(1) As shown in Fig. 4, with each connector still connected, measure the voltage between body ground\nand terminal 1 of connector (A) at the ECU 5V output terminal, terminal 1 of connector (B), and terminal\n1 of connector (C), in that order.\nIf the results are:\n5 V: Between Terminal 1 of connector (A) and Body Ground\n5 V: Between Terminal 1 of connector (B) and Body Ground\n0 V: Between Terminal 1 of connector (C) and Body Ground\nthen it is found out that there is an open circuit in the wire harness between terminal 1 of (B) and termi-\nnal 1 of (C).\n\nFig. 4\n\n0V\n5V\nSensor C\n1\n2\nB\n1\n2\nA\n1\n2\nECU\n5V\n5V\n\nBE4066\n\n2. SHORT CIRCUIT CHECK\nIf the wire harness is ground shorted as in Fig. 5, locate the section by conducting a \"continuity check with\nground\".\n\nFig. 5\n\nC\n1\n2\nSHORT\nB\n1\n2\nA\n1\n2\n\nBE4067","image":"https://tsrm.sasquatchvc.com/images/mk4/IN/IN_034.png","url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/34","prev":{"page":33,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/33","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/33"},"next":{"page":35,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/35","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/35"},"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."}