{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"TGTE","section_name":"Troubleshooting 2JZ-GTE","page":16,"pages_in_section":113,"title":"Troubleshooting 2JZ-GTE","section_header":"Engine — 2JZ-GTE Engine Troubleshooting","ocr_text":"EG–502\n\nENGINE – 2JZ–GTE ENGINE TROUBLESHOOTING\n\nDTC No. | Number of MIL Blinks | Circuit | Diagnostic Trouble Code Detecting Condition\n\n71 | [MIL blink pattern] | EGR System Malfunction | l EGR gas temp. and intake air temp. are 60°C (140°F) or less\nfor A/T, 55°C (131°F) or less for 1 ~ 4 min. under conditions\n(a) and (b):\n(2 trip dectection logic)*3\n(a) Engine coolant temp.: 60°C (140°F) or more\n(b) EGR operation possible (Example A/T in 3rd speed (5th for M/T), A/C ON, 96 km/h (60 mph), Flat road)\nBE3937\n\n78 | [MIL blink pattern] | Fuel Pump Control Signal | (1) Open or short in fuel pump circuit for 1 sec. or more with engine speed 1,000 rpm or less\n(2 trip dectection logic)*3\n\n(2) Open in input circuit for 1 sec. or more with engine speed 1,000 rpm or less\n(2 trip dectection logic)*3\n\n(3) Open or short in diagnostic signal line (DI) fuel pump ECU with engine speed 1,000 rpm or less\n(2 trip dectection logic)*3\nBE3937\n\n51 | [MIL blink pattern] | Switch Condition Signal | (1) 3 sec. or more after engine starts, with closed throttle position switch OFF (IDL1)\n(2) Park/neutral position switch: OFF\n(Shift position in \"R\", \"D\", \"2\", or \"L\" position)\n(3) A/C switch ON\nBE3935\n\n*1: \"ON\" displayed in the diagnostic mode column indicates that the Malfunction Indicator Lamp is lit up when a malfunction is defected. \"OFF\" indicates that the \"CHECK\" does not light up during malfunction diagnosis, even if a malfunction is detected. \"N.A.\" indicates that the item is not included in malfunction diagnosis.\n*2: \"○\" in the memory column indicates that a diagnostic trouble code is recorded in the ECM memory when a malfunction occurs. \"X\" indicates that a diagnostic trouble code is not recorded in the ECM memory even if a malfunction occurs. Accordingly, output of diagnostic results in normal or test mode is done with the IG switch 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}