{"model":"mk3","model_name":"MK3 Supra","vehicle":"Toyota Supra A70 (1986.5–1992, 7M-GE / 7M-GTE)","document":"Repair Manual","section":"FI","section_name":"EFI System","page":31,"pages_in_section":126,"title":"EFI System Check Procedure","section_header":"EFI System — Troubleshooting with Volt/Ohmmeter (7M Ge)","ocr_text":"EFI SYSTEM — Troubleshooting with Volt/Ohmmeter (7M GE)     FI-31\n\nEFI SYSTEM CHECK PROCEDURE\n\nHINT:\n• Perform all voltage measurements with the connectors connected.\n• Verify that the battery voltage is 11 V or above when the ignition switch is at ON.\n\nUsing a voltmeter with high impedance (10 kΩ/V minimum), measure the voltage at each terminal of the wiring connector.\n\nTerminals of ECU\n\nSymbol    Terminal Name\nE01       POWER GROUND\nE02       POWER GROUND\nNo. 10    INJECTOR (No. 1 and 4)\nNo. 20    INJECTOR (No. 2 and 5)\nSTA       STARTER SWITCH\nNo. 30    INJECTOR (No. 3 and 6)\nST1       COLD START INJECTOR\nE1        COMPUTER GROUND\nNSW       NEUTRAL START SWITCH (A/T)\nN/C       CLUTCH SWITCH (M/T)\n*1HT      OXYGEN SENSOR HEATER\nISC1      ISC MOTOR NO. 1 COIL\nISC3      ISC MOTOR NO. 3 COIL\nISC2      ISC MOTOR NO. 2 COIL\nISC4      ISC MOTOR NO. 4 COIL\nG⊖       DISTRIBUTOR\nVF1       CHECK CONNECTOR\nG1        DISTRIBUTOR\n\nSymbol    Terminal Name\nTE1       CHECK CONNECTOR\nG2        DISTRIBUTOR\nVTA       THROTTLE POSITION SENSOR\n-         DISTRIBUTOR\nIDL       THROTTLE POSITION SENSOR\nIGT       IGNITER\n*1THG     EGR GAS TEMP. SENSOR\nIGF       IGNITER\n*1OX2     SUB-OXYGEN SENSOR\nTHW       WATER TEMP. SENSOR\nKNK       KNOCK SENSOR\nOX1       OXYGEN SENSOR\nE2        SENSOR GROUND\nVSV1      VSV (AIR CONTROL)\nL1        TEMS (ECT) COMPUTER\nL2        TEMS (ECT) COMPUTER\nM.REL     EFI MAIN RELAY (COIL)\n\nSymbol    Terminal Name\nL3        TEMS (ECT) COMPUTER\nEGR       VSV (EGR)\nA/C       A/C MAGNETIC SWITCH\nSPD       SPEEDOMETER\nW         WARNING LIGHT\nFP        FUEL PUMP RELAY\nDFG       DEFOGGING RELAY\nTHA       AIR TEMP. SENSOR\n*1ECT     ECT COMPUTER\n-         AIR FLOW METER\nLP        HEADLIGHT RELAY\nVC        AIR FLOW METER\n*1E11     COMPUTER GROUND\nBATT      BATTERY\n+B        EFI MAIN RELAY\nIG SW     IGNITION SWITCH\n+B1       EFI MAIN RELAY\n-         -\n\nECU Terminals\n\n[TABLE showing ECU terminal layout with two rows of pin connections]\n\n*1 California vehicles only\n*2 A/T 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}