|
|
содержание .. 553 554 555 556 ..
EC-228 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P0172, P0175 FUEL INJECTION SYSTEM FUNCTION 6. Also check harness for short to power. Is the inspection result normal? YES >> GO TO 4. NO >> Repair open circuit, short to ground or short to power in harness or connectors. 4. CHECK FUEL PRESSURE 1. Release fuel pressure to zero. Refer to 2. Install fuel pressure gauge kit [SST (J-44321)] and check fuel pressure. Refer to Is the inspection result normal? YES >> GO TO 5. NO >> Replace “fuel filter and fuel pump assembly”. 5. CHECK MASS AIR FLOW SENSOR With CONSULT-III 1. Install all removed parts. 2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-III. EC-536, "Mass Air Flow Sensor" With GST 1. Install all removed parts. 2. Check mass air flow sensor signal in “Service $01” with GST. EC-536, "Mass Air Flow Sensor" Is the measurement value within the specification? YES >> GO TO 6. NO >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or ground. Refer to 6. CHECK FUNCTION OF FUEL INJECTOR With CONSULT-III 1. Start engine. 2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III. 3. Check that each circuit produces a momentary engine speed drop. With GST 1. Let engine idle. DTC A/F sensor 1 Ground Continuity Bank Connector Terminal P0172 1 F27 1 Ground Not existed 2 P0175 2 F64 1 2 DTC ECM Ground Continuity Connector Terminal P0172 F8 45 Ground Not existed 49 P0175 53 57 At idling: Approximately 350 kPa (3.57 kg/cm 2 , 51 psi) |