DTC P0627 Fuel Pump Control Circuit / Open
Description
DTC No. | DTC Detection Condition | Trouble Area |
P0627 | Open or short in suction control valve circuit for more than 0.5 seconds (1 trip detection logic) |
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HINT:
- For more information on the supply pump (suction control valve) and the common rail system, refer to the system description.
- When DTC P0627 is set, check the internal fuel pressure of the common rail by entering the following menus on the intelligent tester: Powertrain / Engine and ECT / Data List / Fuel Press.
Engine Speed | Fuel Pressure |
Idling | Approximately 37 to 43 MPa |
2,500 rpm (No engine load) | Approximately 57 to 63 MPa |
Wiring diagram
Refer to DTC P0088.
Inspection procedure
NOTICE:
- After replacing the ECM, the new ECM needs registration and initialization.
- After replacing a supply pump, the ECM needs initialization.
1.INSPECT SUPPLY PUMP ASSEMBLY |
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Disconnect the B46 suction control valve connector.
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Measure the resistance of the suction control valve.
Standard resistance:
Tester Connection Condition Specified Condition B46-1 - B46-2 20°C (68°F) 1.9 to 2.3 ? -
Reconnect the suction control valve connector.
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OK | |
2.CHECK WIRE HARNESS (SCV - ECM) |
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Disconnect the B46 suction control valve connector.
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Disconnect the B32 ECM connector.
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Measure the resistance of the wire harness side connectors.
Standard resistance:
Tester Connection Specified Condition B46-1 - B32-42 (PCV+) Below 1 ? B46-2 - B32-41 (PCV-) Below 1 ? B46-1 or B32-42 (PCV+) - Body ground 10 k? or higher B46-2 or B32-41 (PCV-) - Body ground 10 k? or higher -
Reconnect the suction control valve connector.
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Reconnect the ECM connector.
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OK | |
3.CHECK WHETHER DTC OUTPUT RECURS |
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Connect the intelligent tester to the DLC3
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Turn the ignition switch on (IG) and turn the tester ON.
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Clear DTCs.
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Turn the ignition switch on (IG) and leave it for approximately 1 minute.
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Enter the following menus: Powertrain / Engine and ECT / DTC.
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Read the DTCs.
Result:Display (DTC Output) Proceed to P0627 A No output B
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A | |
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