TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
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FI/EFI System22 / 126
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EFI SYSTEM — Troubleshooting — MK3 Supra EFI System, page 22
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CONTINUED FROM PAGE FI-21 OK CHECK SPARK PLUGS Plug gap: 7M-GE 1.1 mm (0.043 in.) 7M-GTE 0.8 mm (0.031 in.) — HINT — Check compression pressure and valve clearance if necessary. NO 1. Spark plugs 2. Compression pressure Minimum: 1.0 kg/cm² (98 psi, 883 kPa) at 250 rpm 3. Valve clearance Standard: IN 0.15 — 0.25 mm (0.006 — 0.010 in.) EX 0.20 — 0.30 mm (0.008 — 0.012 in.) OK CHECK EFI ELECTRONIC CIRCUT USING VOLT/OHMMETER (See pages FI-30, 49) BAD 1. Wiring connection 2. Power to ECU (1) Fusible links (2) Fuses (3) EFI main relay 3. Ground circuit 4. Water temp. sensor 5. Air temp. sensor 6. Throttle position sensor 7. Injection signal circuit (1) Injector wiring (2) Resistor (7M-GTE) (3) ECU