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DTC P1272 FUEL PUMP EC-577 [YD (WITHOUT EURO-OBD)] C D E F G H I J K L M A EC Diagnostic Procedure EBS015AR 1. PERFORM FUEL PUMP LEARNING VALUE CLEARING NOTE: With CONSULT-II 1. Turn ignition switch ON. 2. Perform Fuel Pump Learning value clearing. Refer to EC-368, "Fuel Pump Learning Value Clearing" . 3. Start engine and let it idle for at least 60 seconds. 4. Select “SELF-DIAG RESULT” mode with CONSULT-II. 5. Touch “ERASE”. 6. Perform EC-575, "DTC Confirmation Procedure" , again. 7. Is DTC detected again? Yes or No Yes >> GO TO 2. No >> INSPECTION END 2. CHECK FUEL PUMP POWER SUPPLY CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector and fuel pump harness 3. Check harness continuity between ECM terminal 10 and fuel pump terminal 1. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 3. CHECK FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 29 and fuel pump terminal 2. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. PBIB1943E Continuity should exist. Continuity should exist. |