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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-865 73 MFI relay (power Ignition switch: "LOCK" (OFF) B+ Ignition switch: "ON" 1 V or less 74 Accelerator pedal Ignition switch: Release the accelerator 0.9 − 1.1 V Depress the accelerator 4 V or more 75 Power supply Ignition switch: "ON" 4.9 − 5.1 V 77 Accelerator pedal Ignition switch: Release the accelerator 0.4 − 0.6 V Depress the accelerator 2 V or more 78 Power supply Ignition switch: "ON" 4.9 − 5.1 V 82 Power supply Ignition switch: "ON" B+ 84 Throttle actuator Ignition switch: "ON" → "LOCK" (OFF) 1 V or less → B+ → 1 V or less 87 Mass airflow sensor Engine: revving Voltage increases 89 Intake air Ignition switch: When intake air temperature −20°C (−4°F) 3.8 − 4.4 V When intake air temperature °C (32°F) 3.2 − 3.8 V When intake air temperature °C (68°F) 2.3 − 2.9 V When intake air temperature °C (104°F) 1.5 − 2.1 V When intake air temperature °C (140°F) 0.8 − 1.4 V When intake air temperature °C (176°F) 0.4 − 1.0 V 92 Ignition switch-IG Ignition switch: "ON" B+ 96 Fuel pump relay Ignition switch: "ON" B+ Engine: idling 1.0 V or less 102 A/C compressor • Engine: idling • A/C switch: OFF → ON (A/C compressor is operating) B+ → 1 V or less as A/C clutch TERMINAL INSPECTION ITEM INSPECTION CONDITION (ENGINE CONDITION) NORMAL |