{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Electrical Wiring Diagram","section":"EC","section_name":"Engine Control","page":21,"pages_in_section":24,"title":"Service Hints","section_header":"Engine Control (For 2JZ-GE)","ocr_text":"ENGINE CONTROL (FOR 2JZ–GE)\n\nSERVICE HINTS\n\nEFI MAIN RELAY\n(2) 3– (2) 5 : CLOSED WITH IGNITION SW AT ON POSITION\n\nE 3 ENGINE COOLANT TEMP. SENSOR (EFI WATER TEMP. SENSOR)\n1– 2: 10–20 KΩ (–20°C, –4°F)\n4– 7 KΩ ( 0°C, 32°F)\n2– 3 KΩ (20°C, 68°F)\n0.9–1.3 KΩ (40°C, 104°F)\n0.4–0.7 KΩ (60°C, 140°F)\n0.2–0.4 KΩ (80°C, 176°F)\n\nI 1 IDLE AIR CONTROL VALVE (ISC VALVE)\n1, 3– 2: APPROX. 10–30 Ω\n4, 6– 5: APPROX. 10–30 Ω\n\nI12, I13, I14, I15, I16, I17 INJECTOR\n1– 2: APPROX. 13–8 Ω\n\nT 2 THROTTLE POSITION SENSOR\n1– 4: APPROX. 4– 9 KΩ\n1– 3: 3.3– 10.0 KΩ WITH THROTTLE VALVE FULLY OPENED POSITION\n0.2– 0.8 KΩ WITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0 MM (0 IN.)\n1– 2: 0–2.3 KΩ WITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0.45 MM (0.0177 IN.)\nINFINITY WITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0.55 MM (0.0216 IN.)\n\nE 9(B), E10(A) ENGINE CONTROL MODULE (ENGINE AND ELECTRONICALLY CONTROLLED TRANSMISSION ECU)\n(VOLTAGE AT ENGINE CONTROL MODULE (ENGINE AND ELECTRONICALLY CONTROLLED TRANSMISSION ECU) WIRING CONNECTORS)\nBATT–E1 : ALWAYS 9–14 VOLTS\nIGSW–E1 : 9–14 VOLTS WITH IGNITION SW ON\nM–REL–E1 : 9–14 VOLTS WITH IGNITION SW ON\n+B–E1 : 9–14 VOLTS WITH IGNITION SW ON\nIDL1–E2 : 9–14 VOLTS WITH IGNITION SW ON AND THROTTLE VALVE FULLY OPEN\n0 –1.5 VOLTS WITH IGNITION SW ON AND THROTTLE VALVE FULLY CLOSED\nVTA1–E2 : 0.3–0.8 VOLTS WITH IGNITION SW ON AND THROTTLE VALVE FULLY CLOSED\n3.3 KΩ –10.0 KΩ WITH IGNITION SW ON AND THROTTLE VALVE OPEN\n#10, #20, #30–E01, E02 : PULSE GENERATION (ENGINE IDLING)\n#40, #50, #60–E01, E02 : PULSE GENERATION (ENGINE IDLING)\nTHA–E2 : 0.5–3.4 VOLTS WITH IGNITION SW ON AND INTAKE AIR TEMP. 20°C (68°F)\nTHW–E2 : 0.2–1.0 VOLTS WITH IGNITION SW ON AND COOLANT TEMP. 80°C (176°F)\nSTA–E1 : 6–14 VOLTS WITH ENGINE CRANKING\nISC1, ISC2, ISC3, ISC4–E1 : PULSE GENERATION (ENGINE IDLING)\nW–E1 : 9–14 VOLTS WITH ENGINE IDLING\nIGF–E1 : PULSE GENERATION (ENGINE IDLING)\nNSW–E1 : 0.3 VOLTS WITH IGNITION SW ON AND SHIFT LEVER P OR N POSITION\n9–14 VOLTS WITH IGNITION SW ON AND SHIFT LEVER EXCEPT P OR N POSITION\nSP1 : PULSE GENERATION\nTE1, TE2–E1 : 9–14 VOLTS WITH IGNITION SW ON\nA/C–E1 : 0–1.5 VOLTS WITH IGNITION SW ON AND A/C OFF\n7.5–14 VOLTS WITH IGNITION SW ON AND A/C ON\nELS–E1 : 9–14 VOLTS WITH TAILLIGHT ON, DEFOGGER ON\n0–1.5 VOLTS WITH TAILLIGHT OFF, DEFOGGER OFF\nSTP–E1 : 7.5–14 VOLTS WITH STOP LIGHT SW ON (BRAKE PEDAL DEPRESSED)\n0–1.5 VOLTS WITH STOP LIGHT SW OFF\n\n(RESISTANCE OF ENGINE CONTROL MODULE (ENGINE AND ELECTRONICALLY CONTROLLED TRANSMISSION ECU) CONNECTORS)\nIDL1–E2 : INFINITY WITH THROTTLE VALVE OPEN\n0–2.3 KΩ WITH THROTTLE VALVE FULLY CLOSED\nVTA1–E2 : 3.3 KΩ –10.0 KΩ WITH THROTTLE VALVE FULLY OPEN\n200 Ω –800 Ω WITH THROTTLE VALVE FULLY CLOSED\nVCC–E2 : 4 KΩ –9 KΩ\nTHA–E2 : 2 KΩ –3 KΩ WITH INTAKE AIR TEMP. 20°C (68°F)\nTHW–E2 : 200 Ω–400 Ω WITH COOLANT TEMP. 80°C (176°F)\nISC1, ISC2, ISC3, ISC4– +B : 10–30 Ω\n#10, #20, #30, #40, #50, #60– +B : 13.2 –14.2 Ω\nACIS– +B : 38.5 –44.5 Ω\n\n90","image":"https://tsrm.sasquatchvc.com/images/mk4-ewd/EC/EC_021.png","url":"https://tsrm.sasquatchvc.com/mk4/ewd/EC/21","prev":{"page":20,"url":"https://tsrm.sasquatchvc.com/mk4/ewd/EC/20","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/20"},"next":{"page":22,"url":"https://tsrm.sasquatchvc.com/mk4/ewd/EC/22","api":"https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/22"},"section_url":"https://tsrm.sasquatchvc.com/mk4/ewd/EC","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/1","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/2","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/3","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/4","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/5","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/6","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/7","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/8","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/9","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/10","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/11","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/12","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/13","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/14","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/15","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/16","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/17","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/18","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/19","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/20","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/21","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/22","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/23","https://tsrm.sasquatchvc.com/api/pages/mk4/ewd/EC/24"],"note":"OCR transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}