{"model":"mk2","model_name":"MK2 Supra","vehicle":"Toyota Supra A60 (1982–1986, 5M-GE)","document":"Electrical Wiring Diagram","section":"S3","section_name":"TCCS System (EFI, ESA, ISC)","page":3,"pages_in_section":6,"title":"TCCS System <EFI, ISC (Idle Speed Control)>","section_header":"TCCS System <EFI, ISC (Idle Speed Control)>","ocr_text":"3 TCCS TCCS SYSTEM <EFI, ISC(IDLE SPEED CONTROL)\n\nEFI MAIN RELAY\nCLOSED WITH IGNITION S/W AT IG OR ST POSITION\n⓪ CIRCUIT OPENING RELAY\n1-2: CLOSED WITH STARTER RUNNING OR MEASURING PLATE\n    LAIA FLOW METER : OPEN\n⓪ ⓪ EFI RESISTOR\n1-2,1-3: EACH 2/1\n② INJECTOR\n1-2: EACH 1.5-3.0Ω\nISC VALVE\n⓪ 1- ⓪ 1. ⓪ 3: EACH 10-30Ω\n⓪ 2- ⓪ 2. ⓪ 4: EACH 10-30Ω\n⑪ THROTTLE POSITION SENSOR\n2-4: 0.2-0.8KΩ WITH CLEARANCE BETWEEN\n    LEVER AND STOP SCREW 0MM (0.IN.)\n3-4: LESS THAN 2.3KΩ WITH CLEARANCE BETWEEN\n    LEVER AND STOP SCREW 0.35 MM (0.0138 IN.)\n    ∞ Ω WITH 0.58 MM (0.0232 IN.)\n2-4: 3.3-10KΩ WITH THROTTLE VALVE FULLY OPEN\n1-4: 3-7 KΩ\n⑤ AIR FLOW METER\n1-2: CLOSED WITH STARTER RUNNING OR MEASURING PLATE OPEN\n5-8: 20-400Ω (-20°C,-4°F)\n5-4: 200-400Ω\n5-7: 10-20KΩ (-20°C,-4°F)\n    4-7KΩ (0 C,32°F)\n    2-3KΩ (20°C,68°F)\n    0.8-1.3KΩ (40°C,104°F)\n    0.4-0.7KΩ (80°C,140°F)\n⑪ WATER THERMO SENSOR\n1-2: APPROX. 8KΩ (0°C, 32°F)\n     APPROX. 1.5KΩ (40°C, 104°F)\n     APPROX. 0.5KΩ (80°C,176°F)\n\nECU (ELECTRONIC CONTROL UNIT)\nVOLTAGE AT ECU CONNECTORS\n⓪ 2- ⓪ 7:    10-14 VOLTS\n⑬ 13, ⑬ 14- ⑬ 7: 10-14 VOLTS\n⓪ 1- ⓪ 7:    10-14 VOLTS (IGNITION S/W ON)\n⓪ 8- ⓪ 7:    10-14 VOLTS (IGNITION S/W ON)\n⑪ 13- ⓪ 7:    3-5 VOLTS (IGNITION S/W ON, THROTTLE\n              VALVE OPEN)\n⑪ 14- ⓪ 7:    4-5 VOLTS (IGNITION S/W ON, THROTTLE\n              VALVE CLOSED)\n⑬ 3- ⑬ 24, ⑪ 10: 4-8 VOLTS (IGNITION S/W ON)\n⑬ 4- ⑬ 24, ⑪ 10: 4-5 VOLTS (IGNITION S/W ON,MEASURING\n              PLATE FULLY CLOSED)\n              0.02-0.08 VOLTS (IGNITION S/W ON,\n              MEASURING PLATE FULLY OPEN)\n              2.0-4.0 VOLTS (IDLING)\n              0.3-1.0 VOLTS (3000 RPM)\n⑬ 5- ⑬ 24, ⑪ 10: 1.0-2.0 VOLTS (IGNITION S/W ON,INTAKE\n              AIR TEMP. 20°C (68°F)\n⓪ 1- ⓪ 7:    0.1-0.5 VOLTS (IGNITION S/W ON,COOLANT\n              TEMP. 80°C (176°F)\n⓪ 3- ⓪ 7:    8-12 VOLTS (IGNITION S/W ST POSITION)\n⓪ 4, ⓪ 8- ⓪ 7: 8-12 VOLTS (IGNITION S/W ON)\n⓪ 8- ⓪ 7:    0.7-1.0 VOLTS (IDLING)\n⑪ 9, ⑪ 17- ⓪ 7: 8-14 VOLTS (IGNITION S/W ON)\n              8-14 VOLTS (2-3 SECONDS AFTER\n              ENGINE OFF)\n⑬ 13- ⓪ 2:    10-15VOLTSWITH IGNITION S/W ON\n              0VOLT WITH ENGINE START AND\n              WARM-UP O2 SENSOR\n⓪ 1- ⓪ 7:    0VOLT WITH IGNITION S/W ON,\n              SHIFT POSITION P OR N RANGE\n              10-14 VOLTS WITH IGNITION S/W ON,\n              SHIFT POSITION EXCEPT P OR N RANGE\n              O VOLT WITH IGNITION S/W ON,\n              CLUTCH PEDAL NOT DEPRESSED\n              10-14 VOLTS WITH IGNITION S/W ON,\n              CLUCH PEDAL DEPRESSED\n              9-11 VOLTS WITH CRANKING\n⑪ 15- ⓪ 7:    4-8 VOLTS WITH IGNITION S/W ON\n              CHECK ENGINE CONNECTOR NOT SHORT\n              O VOLT WITH IGNITION S/W ON,\n              CHECK ENGINE CONNECTOR SHORT\n\n- 20 -","image":"https://tsrm.sasquatchvc.com/images/mk2-ewd/S3/S3_003.png","url":"https://tsrm.sasquatchvc.com/mk2/ewd/S3/3","prev":{"page":2,"url":"https://tsrm.sasquatchvc.com/mk2/ewd/S3/2","api":"https://tsrm.sasquatchvc.com/api/pages/mk2/ewd/S3/2"},"next":{"page":4,"url":"https://tsrm.sasquatchvc.com/mk2/ewd/S3/4","api":"https://tsrm.sasquatchvc.com/api/pages/mk2/ewd/S3/4"},"section_url":"https://tsrm.sasquatchvc.com/mk2/ewd/S3","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk2/ewd/S3/1","https://tsrm.sasquatchvc.com/api/pages/mk2/ewd/S3/2","https://tsrm.sasquatchvc.com/api/pages/mk2/ewd/S3/3","https://tsrm.sasquatchvc.com/api/pages/mk2/ewd/S3/4","https://tsrm.sasquatchvc.com/api/pages/mk2/ewd/S3/5","https://tsrm.sasquatchvc.com/api/pages/mk2/ewd/S3/6"],"note":"OCR transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}