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EC-294 [QG (WITH EURO-OBD)] DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION (A/T MODELS) 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 MODE 1 with GST. OK or NG OK >> GO TO 7. NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or engine grounds. Refer to EC-178, "DTC P0102, P0103 MAF SENSOR" . 7. CHECK FUNCTION OF INJECTORS With CONSULT-II 1. Start engine. 2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with 3. Make sure that each circuit produces a momentary engine Without CONSULT-II 1. Start engine. 2. Listen to each injector operating sound. OK or NG OK >> GO TO 8. NG >> Perform trouble diagnosis for . 1.0 - 4.0 g·m/sec: at idling 5.0 - 10.0 g·m/sec: at 2,500 rpm 1.0 - 4.0 g·m/sec: at idling 5.0 - 10.0 g·m/sec: at 2,500 rpm PBIB0133E Clicking noise should be heard. MEC703B |