{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"TGE","section_name":"Troubleshooting 2JZ-GE","page":43,"pages_in_section":105,"title":"Check voltage between terminals HT1, HT2 of engine control module connector and body ground.","section_header":"Engine — 2JZ-GE Engine Troubleshooting","ocr_text":"EG-423\nENGINE — 2JZ-GE ENGINE TROUBLESHOOTING\n\n3 Check voltage between terminals HT1, HT2 of engine control module connector and body ground.\n\nSST\nECM\n\nB 73, 72\n\nHT1  HT2\n\nFI6890\n\nP\nC\nWarm up engine to normal operating temperature.\nMeasure voltage between terminals HT1, HT2 of engine control module connector and body ground.\nwhen engine is idling and racing at 4,000 rpm.\n\nOK\n                          Voltage\nIdling          0 V\nRacing at 4,000 rpm     9 - 14 V\n\nHint  In the 4,000 rpm racing check, continue engine racing at 4,000 rpm for approx. 20 seconds or more.\n\nNG\n\nCheck and replace engine control module.\n\nOK  Replace main heated oxygen sensor.*\n\n*: It is probable the oxygen sensor has deteriorated. Usually, this cannot be confirmed by visual inspection.\n\nReference  INSPECTION USING OSCILLOSCOPE\n\nOx Signal Waveform\n1 V\n\n0 V\n\n200 msec./Division\n\n• With the engine racing (4,000 rpm) measure waveform between terminals OX1, OX2 and E1 of engine control module.\nHINT: The correct waveform is as shown, oscillating between approx. 0.1 V nd 0.9 V\n\n1 V\n\n0 V\n\n200 msec./Division\n\nIf the oxygen sensor has deteriorated, the amplitude of the voltage will be reduced as shown on the left.\n\nFI6514\nFI6515","image":"https://tsrm.sasquatchvc.com/images/mk4/TGE/TGE_043.png","url":"https://tsrm.sasquatchvc.com/mk4/tsrm/TGE/43","prev":{"page":42,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/TGE/42","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/42"},"next":{"page":44,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/TGE/44","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/44"},"section_url":"https://tsrm.sasquatchvc.com/mk4/tsrm/TGE","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/1","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/2","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/3","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/4","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/5","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/6","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/7","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/8","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/9","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/10","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/11","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/12","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/13","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/14","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/15","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/16","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/17","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/18","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/19","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/20","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/21","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/22","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/23","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/24","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/25","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/26","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/27","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/28","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/29","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/30","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/31","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/32","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/33","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/34","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/35","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/36","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/37","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/38","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/39","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/40","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/41","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/42","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/43","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/44","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/45","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/46","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/47","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/48","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/49","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/50","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/51","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/52","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/53","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/54","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/55","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/56","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/57","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/58","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/59","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/60","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/61","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/62","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/63","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/64","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/65","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/66","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/67","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/68","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/69","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/70","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/71","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/72","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/73","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/74","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/75","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/76","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/77","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/78","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/TGE/79","https://tsrm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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}