{"model":"mk3","model_name":"MK3 Supra","vehicle":"Toyota Supra A70 (1986.5–1992, 7M-GE / 7M-GTE)","document":"Repair Manual","section":"AC","section_name":"Air Conditioning System","page":12,"pages_in_section":46,"title":"Air Conditioning System","section_header":"Air Conditioning System — General Description","ocr_text":"Interior Room Temperature Control System & Blower Speed Control System (Cont'd)\n\n(a) Interior Room Temperature Control System\n\nFor example, now interior room temperature is rising.\n\n[DIAGRAM showing Heater Control Assembly with components: Temp. Control Dial, Potentiometer, In-Car Sensor, Ambient Sensor, Vi, Vt, System Amplifier, Control Air Mix Servo Motor, Air Mix Control Servo Motor]\n\n① Resistance value of in-car sensor decreases.\n② Voltage of Vi decreases.\n③ System amplifier rotates a motor in air mix control servo motor.\n④ Air mix control servo motor shaft moves towards max. cool side.\n⑤ Resistance value of potentiometer increases.\n⑥ Voltage of Vt increases in original condition.\n⑦ Air mix control servo motor shaft stops.\n\n* When air mix control servo motor shaft moves at max. cool position, water valve VSV is off. And water valve is close.\n\n(b) Blower Speed Control System\n\nAs aforesaid, according to moving of air mix control servo motor, blower speed is controlled.\n\nWarm-up System     condition: Blower Switch AUTO position.\n                              Air Mode Switch is AUTO or HEAT position.\n\nThis system has a function that the blower unit blows cold air to your feet.\n\n[TABLE:\nWater Temperature | Water Temperature Switch | Blower Motor\nLess than 20°C (68°F) | 20°C (68°F) Switch → OFF | OFF\n20°C ~ 40°C (68°F ~ 104°F) | 20°C (68°F) Switch → ON, 40°C (104°F) Switch → OFF | Low Only\nMore than 40°C (104°F) | 40°C (104°F) Switch → ON | Automatic Control]","image":"https://tsrm.sasquatchvc.com/images/mk3/AC/AC_012.png","url":"https://tsrm.sasquatchvc.com/mk3/tsrm/AC/12","prev":{"page":11,"url":"https://tsrm.sasquatchvc.com/mk3/tsrm/AC/11","api":"https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/11"},"next":{"page":13,"url":"https://tsrm.sasquatchvc.com/mk3/tsrm/AC/13","api":"https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/13"},"section_url":"https://tsrm.sasquatchvc.com/mk3/tsrm/AC","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/1","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/2","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/3","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/4","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/5","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/6","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/7","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/8","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/9","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/10","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/11","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/12","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/13","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/14","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/15","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/16","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/17","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/18","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/19","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/20","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/21","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/22","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/23","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/24","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/25","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/26","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/27","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/28","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/29","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/30","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/31","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/32","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/33","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/34","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/35","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/36","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/37","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/38","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/39","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/40","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/41","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/42","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/43","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/44","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/45","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AC/46"],"note":"OCR transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}