{"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":31,"pages_in_section":113,"title":"Inspection Using Oscilloscope","section_header":"Engine — 2JZ-GTE Engine Troubleshooting","ocr_text":"Reference | INSPECTION USING OSCILLOSCOPE\n\nG, NE Signal Waveforms\n\n5 V/Div.\nG1\nG2\nNE\n\n20 msec./Division (Idling)\n\nFI6519\n\n• During cranking or idling, check waveforms between terminals G1, G2 and G1 ×, G2 ×, NE and NE × of engine control module.\n\nHINT: The correct waveforms are as shown.\n\nOK\n\nNG Replace crankshaft position sensor, camshaft position sensor No.1, No.2.\n\n2 Check for open and short in harness and connector between engine control module and each sensor (See page IN–30).\n\nOK\n\nNG Repair or replace harness or connector.\n\n3 Inspect sensor installation and teeth of timing rotor.\n\nOK\n\nNG Tighten the sensor. Replace timing rotor (Intake camshaft, crankshaft timing pulley).\n\nCheck and replace engine control 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