{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"TGE","section_name":"Troubleshooting 2JZ-GE","page":16,"pages_in_section":105,"title":"Troubleshooting 2JZ-GE","section_header":"Engine — 2JZ-GE Engine Troubleshooting","ocr_text":"EG–396\n\nENGINE – 2JZ–GE ENGINE TROUBLESHOOTING\n\nDTC No. | Number of MIL Blinks | Circuit | Diagnostic Trouble Code Detecting Condition\n\n71\nBE3937\nEGR System Malfunction\nEGR gas temp. is 70°C (158°F) or less for 1 — 4 min. under conditions (a) and (b):\n(2 trip detection logic)*4\n(a) Engine Coolant temp.: 63°C (145°F) or more\n(b) EGR operation possible (Example A/T in 3rd speed (5th for M/T),\nA/C ON, 96 km/h (60 mph), Flat road)\n\n78\nBE3937\nFuel Pump Control Signal\n(1) Open or short in fuel pump circuit for 1 sec. or more with engine speed 1,000 rpm or less\n(2 trip detection logic)*4\n(2) Open in input circuit of fuel pump ECU (FPC) with engine speed 1,000 rpm or less\n(2 trip detection logic)*4\n(3) Open or short in diagnostic signal line (DI) of fuel pump ECU with engine speed 1,000 rpm or less\n(2 trip detection logic)*4\n\n51\nBE3935\nSwitch Condition Signal\n(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\n\n*1: \"ON\" displayed in the diagnostic mode column indicates that the Malfunction Indicator Lamp is lit up when a malfunction is detected. \"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\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 ON.\n\n*3: Only for California specification 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}