{"model":"mk2","model_name":"MK2 Supra","vehicle":"Toyota Supra A60 (1982–1986, 5M-GE)","document":"Repair Manual","section":"FI","section_name":"EFI System","page":26,"pages_in_section":80,"title":"EFI System","section_header":"EFI System — Diagnosis System","ocr_text":"Code\nNo.\tSystem\tDiagnosis\tTrouble Area\tSee page\n\n22\tWater Temp.\nSensor Signal\tOpen or short circuit in coolant temp.\nsensor signal.\t1. Water temp. sensor\ncircuit\n2. Water temp. sensor\n3. ECU\tFI-72\n\n23\tIntake Air Temp.\nSensor Signal\tOpen or short circuit in intake air temp.\nsensor.\t1. Intake air temp. sensor\ncircuit\n2. Intake air temp. sensor\n3. ECU\tFI-38\n\n31\tAir Flow Meter\nSignal\tOpen circuit in Vc signal or Vs and E2\nshort circuited when idle points are\nclosed.\t1. Air flow meter circuit\n2. Air flow meter\n3. ECU\tFI-37\n\n32\tAir Flow Meter\nSignal\tOpen circuit in E2 or Vc and Vs short\ncircuited.\tSame as 31, above.\tFI-37\n\n41\tThrottle Position\nSensor Signal\tOpen or short circuit in\nthrottle position sensor signal.\t1. Throttle position\nsensor circuit\n2. Throttle position\nsensor\n3. ECU\tFI-35\n\n42\tVehicle Speed\nSensor Signal\t(A/T): Signal informing ECU that vehicle\nspeed is 2.0 km/h or less has been\ninput ECU for 5 seconds with\nengine running at 2,500 rpm or\nmore and shift lever is in other than\nN or P range.\n(M/T): Signal informing ECU that vehicle\nspeed is 2.0 km/h or less has been\ninput ECU for 5 seconds with\nengine running at 2,500 rpm or\nmore.\t1. Vehicle speed sensor\ncircuit\n2. Vehicle speed sensor\n3. Torque converter\nslipping\n4. ECU\t\n\n43\tStarter Signal\n(+ B)\tNo STA signal to ECU when engine is\nrunning over 800 rpm.\t1. Main relay circuit\n2. IG switch circuit\n(starter)\n3. IG switch\n4. ECU\tFI-40\n\n51\tSwitch Signal\tNeutral start switch OFF or air condi-\ntioner switch ON during diagnostic\ncheck.\t1. Neutral start S/W\n2. Air con. S/W\n3. ECU\t\n\n52\tKnock Sensor\nSignal\tOpen or short circuit in knock sensor.\t1. Knock sensor circuit\n2. Knock sensor\n3. ECU\t\n\n53\tKnock Sensor\nSignal\tFaulty ECU (KNOCK 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}