{"model":"mk2","model_name":"MK2 Supra","vehicle":"Toyota Supra A60 (1982–1986, 5M-GE)","document":"Repair Manual","section":"FI","section_name":"EFI System","page":75,"pages_in_section":80,"title":"Electronic Controlled Unit (ECU)","section_header":"EFI System — Electronic Control System","ocr_text":"Electronic Controlled Unit (ECU)\nINSPECTION OF ECU\n1. MEASURE VOLTAGE OF ECU\nNOTE: The EFI circuit can be checked by measuring the resistance and voltage at the wiring connectors of the ECU.\nCheck the voltages at the wiring connectors.\n• Remove the glove box.\n• Turn on the ignition switch.\n• Measure the voltage at each terminal.\n\nVoltmeter ECU\n+B\nE1\n\nNOTE: 1. Perform all voltage measurements with the connectors connected.\n2. Verify that the battery voltage is 11V or above when the ignition switch is ON.\n\nConnectors of ECU\n\nSymbol Terminal Name Symbol Terminal Name Symbol Terminal Name\nE01 ENGINE GROUND G– ENGINE REVOLUTION SENSOR A/C A/C MAGNET SWITCH\nE02 ENGINE GROUND V+ CHECK CONNECTOR SPD SPEEDOMETER\nNo. 10 INJECTOR G ENGINE REVOLUTION SENSOR W WARNING LIGHT\nNo. 20 INJECTOR – CHECK CONNECTOR THA AIR TEMP. SENSOR\nSTA STARTER SWITCH +VTA THROTTLE SWITCH V+ AIR FLOW METER\nIGt IGNITER Ne ENGINE REVOLUTION SENSOR Vc AIR FLOW METER\nEGR EGR VSV IDL THROTTLE SWITCH BAT BATTERY +B\nE1 ENGINE GROUND KNK KNOCK SENSOR IG-SW IGNITION SWITCH\nN/C NEUTRAL START SWITCH (A/T) IGf IGNITER +B MAIN RELAY\n– CLUTCH SWITCH (M/T) Ox OXYGEN SENSOR TCD ECT COMPUTER\nISC1 ISC MOTOR NO. 1 COIL THW WATER TEMP. SENSOR OL OIL PRESSURE SWITCH\nISC2 ISC MOTOR NO. 2 COIL E2 SENSOR EARTH L1 ECT COMPUTER\nISC3 ISC MOTOR NO. 3 COIL E1 ENGINE GROUND L2 ECT COMPUTER\nISC4 ISC MOTOR NO. 4 COIL M-REL MAIN RELAY COIL L3 ECT COMPUTER\n\nE01 No. 10 STA EGR N/C ISC1 ISC2 ISC3 G-C G Ne IGf THW L1 L2 L3 M-REL SPD THA V+ Vc BAT IG-SW\nE02 No. 20 IGt E1 ISC4 IDL V+ T +VTA IDL KNK Ox E2 E2 E1 TCD A/C W OIL +B 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}