TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
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FI/EFI System17 / 126
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EFI SYSTEM — Troubleshooting — MK3 Supra EFI System, page 17
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OK CONTINUED FROM PAGE FI-16 CHECK COLD START INJECTOR (See page FI-77) BAD 1. Cold start injector 2. Cold start injector time switch (See page FI-112) OK CHECK FUEL PRESSURE (See page FI-71) BAD 1. Fuel pump (See page FI-70) 2. Fuel filter 3. Fuel pressure regulator (See page FI-81) OK CHECK INJECTORS (See page FI-83) BAD Injection condition OK CHECK EFI ELECTRONIC CIRCUIT USING VOLT/OHMMETER (See pages FI-30, 49) BAD 1. Wiring connection 2. Power to ECU (1) Fusible links (2) Fuses (EFI 15A, IGN 7.5A) (3) EFI main relay 3. Air flow meter 4. Water temp. sensor 5. Air temp. sensor 6. Throttle position sensor 7. Injection amount (1) Injector wiring (2) Resistor (7M-GTE) (3) ECU