{"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":27,"pages_in_section":105,"title":"Reference Value of ECM Data","section_header":"Engine — 2JZ-GE Engine Troubleshooting","ocr_text":"REFERENCE VALUE OF ECM DATA\n\nHINT: ECM data can be monitored by TOYOTA hand–held tester.\n1. Hook up the TOYOTA hand–held tester to DLC2.\n2. Monitor ECM data by following the prompts on the tester screen.\nPlease refer to the TOYOTA hand–held tester operator's manual for further details.\n\nREFERENCE VALUE\n\nItem | Inspection condition | Reference value\n\nINJECTOR | Engine cold to hot\nEngine idling at normal operating temp.*1 | Gradually decreases\nApprox. 2.0 msec.\n\nIGNITION | Increase engine speed | Gradually increases\n\nIAC STEP # | Engine idling at normal operating temp.*1\nA/C switch ON\nA/T shifting in \"D\" position\nIgnition switch ON (Engine off) | 20 ~ 25 steps\nStep increases\nStep increases\nApprox. 125 steps\n\nENGINE SPEED | RPM kept stable (Comparison with tachometer) | No great changes\n\nVAF | Engine idling at normal operating temp.*1\nIncrease engine speed | Approx. 35 ms\nGradually decreases\n\nECT | Engine at normal operating temp. | 75–95°C (185–203°F)*2\n\nTHROTTLE | Closed throttle position\nWide open throttle\nFrom closed throttle position to wide open throttle | Below 5°\nAbove 70°\nGradually increases\n\nVEHICLE SPD | During driving\n(Comparison with speedometer) | No large differences\n\nTARGET A/FL*5 | Engine idling at normal operating temp. | 2.50 ± 1.25 V*3\nTARGET A/FR*6 | Engine idling at normal operating temp. | 2.50 ± 1.25 V*3\n\nA/F FB LEFT*5 | RPM stable at 2500 rpm with normal operating temp. | ON\nA/F FB RIGHT*6 | RPM stable at 2500 rpm with normal operating temp. | ON\n\nKNOCK FB | Depress throttle pedal suddenly during idling | ON\nSTA SIGNAL | During cranking | ON\nCTP SIGNAL | Closed throttle position | ON\nA/C SIGNAL | A/C switch ON | ON\n\nPNP SIGNAL*4 | When shifting from \"P\" or \"N\" position into a position other than \"P\" or \"N\" | GEAR\n\nO X L*5 | RPM stable at 2500 rpm with normal operating temp. | RICH LEAN is repeated\nO X R*6 | RPM stable at 2500 rpm with normal operating temp. | RICH LEAN is repeated\n\n*1: If the engine coolant temp. sensor circuit is open or shorted, the ECM assumes an engine coolant temp. value of 80°C (176°F).\n*2: When feedback control is forbidden, 0 V is displayed.\n*3: A/T only\n*4: Oxygen sensor (Front)\n*5: Oxygen sensor 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