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DTC P1273 FUEL PUMP EC-1195 [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 EBS013G8 DTC Confirmation Procedure EBS013G9 NOTE: WITH CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Select “DATA MONITOR” mode with CONSULT-II. 3. Keep engine speed more than 2,000 rpm for at least 10 sec- 4. If 1st trip DTC is detected, go to . 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 P1273 Fuel pump insufficient flow ECM detects the abnormal pulse of fuel pressure. ● Fuel pump ● Air mixed with fuel ● Lack of fuel ● Fuel rail pressure sensor SEF817Y |