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DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION EC-329 C D E F G H I J K L M A EC 4. CHECK FUEL PRESSURE 1. Release fuel pressure to zero. Refer to EC-81, "FUEL PRESSURE RELEASE" 2. Install fuel pressure gauge and check fuel pressure. Refer to OK or NG OK >> GO TO 6. NG >> GO TO 5. 5. DETECT MALFUNCTIONING PART Check the following. ● Fuel pump and circuit (Refer to .) ● Fuel pressure regulator (Refer to ● ● Fuel filter for clogging >> Repair or replace. 6. CHECK MASS AIR FLOW SENSOR With CONSULT-II 1. Install all removed parts. 2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II. With GST 1. Install all removed parts. 2. Check mass air flow sensor signal in Service $01 with GST. OK or NG OK (With CONSULT-II)>>GO TO 7. >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or EC-207, "DTC P0101 MAF SENSOR" At idling: Approximately 350 kPa (3.57 kg/cm 2 , 51 psi) 2.0 - 6.0 g·m/sec: at idling 7.0 - 20.0 g·m/sec: at 2,500 rpm 2.0 - 6.0 g·m/sec: at idling 7.0 - 20.0 g·m/sec: at 2,500 rpm |