TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
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A/Service Specifications9 / 36
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SERVICE SPECIFICATIONS — EFI System — MK3 Supra Service Specifications, page 9
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SERVICE SPECIFICATIONS — EFI System A-9 Specifications (Cont'd) ISC valve Resistance B1 — S1 or S3 10 — 30 Ω B2 — S2 or S4 10 — 30 Ω Solenoid Resistance No. 10 resistor +B — , 3 Ω each (7M-GTE) No. 30 Cold start Resistance injector time STA — STJ switch below 15°C (59°F) 25 — 45 Ω above 30°C (86°F) 65 — 85 Ω STA — Ground 25 — 85 Ω Water temp. Resistance at -20°C (-4°F) 10 — 20 kΩ sensor at 0°C (32°F) 4 — 7 kΩ at 20°C (68°F) 2 — 3 kΩ at 40°C (104°F) 0.9 — 1.3 kΩ at 60°C (140°F) 0.4 — 0.7 kΩ at 80°C (176°F) 0.2 — 0.4 kΩ Fuel control Resistance 30 — 50 Ω VSV (7M-GTE) Fuel pump Resistance Approx. 0.7 Ω resistor Oxygen sensor Heater resistance 7M-GTE 3.0 — 3.6 Ω Sub-oxygen Heater resistance at 20°C (68°F) 5.1 — 6.3 Ω sensor (7M-GE (Calif. only)) EGR gas temp. Resistance at 50°C (122°F) 69.40 — 88.50 kΩ sensor at 100°C (212°F) 11.89 — 14.37 kΩ (Calif. only) at 150°C (302°F) 2.79 — 3.59 kΩ ECU HINT: • Perform all voltage and resistance measurements with the computer connected. • Verify that the battery voltage is 11 V or above when the ignition switch is ON. Voltage Terminals Condition STD Voltage (V) BATT — E1 10 — 14 IG SW — E1 Ignition SW ON 10 — 14 M-REL — E1 Ignition SW ON 10 — 14 +B(+B1) — E1 Ignition SW ON 10 — 14 IDL — E2 Ignition SW ON Throttle valve open 10 — 14 (7M-GE) IDL — E2 Ignition SW ON Throttle valve open 4 — 6 (7M-GTE)