{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"CO","section_name":"Cooling System","page":28,"pages_in_section":30,"title":"Engine Coolant Temperature (ECT) Switch","section_header":"Engine — Cooling System","ocr_text":"EG–356\nENGINE – COOLING SYSTEM\n\nEngine Coolant Temperature (ECT) Switch\nECT SWITCH INSPECTION\n1. REMOVE ENGINE UNDER COVER\n2. DRAIN ENGINE COOLANT\n3. REMOVE ECT SWITCH\n(a) Disconnect the ECT switch connector.\n(b) Remove the ECT switch.\n(c) Remove the O–ring from the ECT switch.\n4. INSPECT ECT SWITCH\n(a) Using an ohmmeter, check that there is no continuity between the terminals when the coolant temperature is above 97°C (207°F).\n(b) Using an ohmmeter, check that there is continuity between the terminals when the coolant temperature is below 88°C (190°F).\nIf continuity is not as specified, replace the switch.\n5. REINSTALL ECT SWITCH\n(a) Install a new O–ring to the ECT switch.\n(b) Apply soapy water to the O–ring.\n(c) Install the ECT switch.\nTorque: 7.4 N·m (75 kgf·cm, 65 in.·lbf)\n(d) Connect the ECT switch connector.\n6. REFILL WITH ENGINE COOLANT\n7. START ENGINE AND CHECK FOR LEAKS\n8. REINSTALL ENGINE UNDER COVER\n\nP13290\n\nOhmmeter\n\nP01929\n\nNo.1 Radiator Fan Relay\n(\"RADIATOR FAN RELAY\")\nRADIATOR FAN RELAY INSPECTION\n1. w/ Auto Spoiler:\nREMOVE LH HEADLIGHT\n2. w/o Auto Spoiler:\nREMOVE ENGINE UNDER COVER\n3. REMOVE RADIATOR FAN RELAY\n\nNo.1 Radiator Fan Relay\n\nP12291\n\n4. INSPECT RADIATOR FAN RELAY\nA. Inspect relay continuity\n(a) Using an ohmmeter, check that there is continuity between terminals 3 and 4.\n(b) Check that there is no continuity between terminals 1 and 2.\nIf continuity is as specified, replace the relay.\n\nOhmmeter\n1\n2\n3\n4\nNo Continuity\nOhmmeter\nContinuity\n\nP11929","image":"https://tsrm.sasquatchvc.com/images/mk4/CO/CO_028.png","url":"https://tsrm.sasquatchvc.com/mk4/tsrm/CO/28","prev":{"page":27,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/CO/27","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/27"},"next":{"page":29,"url":"https://tsrm.sasquatchvc.com/mk4/tsrm/CO/29","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/29"},"section_url":"https://tsrm.sasquatchvc.com/mk4/tsrm/CO","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/1","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/2","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/3","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/4","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/5","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/6","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/7","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/8","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/9","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/10","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/11","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/12","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/13","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/14","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/15","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/16","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/17","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/18","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/19","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/20","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/21","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/22","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/23","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/24","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/25","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/26","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/27","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/28","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/29","https://tsrm.sasquatchvc.com/api/pages/mk4/tsrm/CO/30"],"note":"OCR transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}