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DTC P1274 FUEL PUMP EC-289 [YD (WITH EURO-OBD)] C D E F G H I J K L M A EC : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) On Board Diagnosis Logic EBS013RT This self-diagnosis has the one trip detection logic. DTC Confirmation Procedure EBS013RU NOTE: WITH CONSULT-II 1. Tuning ignition switch ON. 2. Select “DATA MONITOR” mode with CONSULT-II. 3. Start engine and let idle for at least 5 seconds. 4. If DTC is detected, go to EC-291, "Diagnostic Procedure" . WITH GST Follow the procedure “WITH CONSULT-II” above. 29 L Fuel pump [Engine is running] ● Warm-up condition ● Idle speed 0.5 - 1.0V [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm 0.5 - 1.0V TERMI- NAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage and Pulse Signal) MBIB0887E MBIB0888E DTC No. Trouble diagnosis name DTC detecting condition Possible cause P1274 Fuel pump protection Fuel pressure is too much higher than the target ● Harness or connectors ● Fuel pump ● Fuel rail pressure sensor SEF817Y |