{"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":30,"pages_in_section":44,"title":"Inspection Procedure","section_header":"Introduction — How to Troubleshoot ECU Controlled Systems","ocr_text":"• Indicates the position of the ignition switch during the check.\nLOCK\nIgnition Switch LOCK (OFF)\nON\nIgnition Switch ON\nSTART\nIgnition Switch START\nACC\nIgnition Switch ACC\n\n2JZ-GE ENGINE TROUBLESHOOTING — CIRCUIT INSPECTION\nEG-427\n\nINSPECTION PROCEDURE\n\nHINT: If diagnostic trouble codes \"22\" (engine coolant temperature sensor circuit), \"24\" (intake air temperature sensor circuit) and \"41\" (throttle position sensor circuit) are output simultaneously, E2 (sensor ground) may be open.\n\nCheck voltage between terminals THA and E2 of engine control module connector.\n\nON\nSST\nECM\nV\nB 45,\n65\nTHA\nE2\n\nP (1) Connect SST (check harness \"A\").\n(See page EG-404)\nSST 09990-D1000\n(2) Turn ignition switch ON.\n\nC Measure voltage between terminals THA and E2 of engine control module connector.\n\nOK\nIntake air temp.\n°C (°F)     Voltage\n20 (68)     0.5 - 3.4 V\n80 (140)    0+\n\nOK     Check for intermitte...\n(See page EG-39...)\n\n...nsor.\n\n• Inspection Procedure\nUse the inspection procedure to determine if the circuit is normal or abnormal, and, if it is abnormal, use it to determine whether the problem is located in the sensors, actuators, wire harness or ECU.\n\n• P   Preparation\n• C   Check\n\n• Indicates the place to check the voltage or resistance.\n• Indicates the connector position to checked, from the front or back side.\n\nBE4076\nWire Harness\nCheck from the connector back side. (with harness)\n\nBE4077\nCheck from the connector front side (without harness)\nIn this case, care must be taken not to bend the terminals.\n\n• Indicates the condition of the connector of ECU during the check.\n\nBR5459\nConnector being checked is connected.\n\nBE5450\nConnector being checked is disconnected.","image":"https://tsrm.sasquatchvc.com/images/mk4/IN/IN_030.png","url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/30","prev":{"page":29,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/29","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/29"},"next":{"page":31,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/IN/31","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/IN/31"},"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."}