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DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION EC-1041 [VK45DE] 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-790, "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 >> Repair or replace. 6. CHECK MASS AIR FLOW SENSOR With CONSULT-II 1. Install all removed parts. 2. Start engine and warm it up to normal operating temperature. 3. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II. With GST 1. Install all removed parts. 2. Start engine and warm it up to normal operating temperature. 3. 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-906, "DTC P0101 MAF SENSOR" 7. CHECK FUNCTION OF FUEL INJECTOR With CONSULT-II 1. Perform “POWER BALANCE” in “ACTIVE TEST” mode with 2. Make sure that each circuit produces a momentary engine 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 PBIB0133E |