Dtc P0627 Fuel Pump Control Circuit / Open

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Vd-Ftv Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUEL SUPPLY PUMP (SUCTION CONTROL VALVE)

CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)

CHECK WHETHER DTC OUTPUT RECURS

REPLACE FUEL SUPPLY PUMP

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE ECM

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P0627 Fuel Pump Control Circuit / Open


DESCRIPTION

Refer to the System Description (Click here).

P0627
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Idling for 1 second
Even though the CPU (command area inside ECU) is outputting the suction control valve operation duty, the output monitor signal is absent for 0.5 seconds (1 trip detection logic).
  1. Open or short in suction control valve circuit
  2. Suction control valve
  3. ECM

Related Data List
DTC No.
Data List
P0627
Fuel Press
HINT:
  1. For more information on the fuel supply pump (suction control valve) and the common rail system, refer to the System Description (Click here).
  2. When DTC P0627 is stored, check the internal fuel pressure of the common rail by entering the following menus on the intelligent tester: Powertrain / Engine / Data List / Fuel Press.
    Under a stable operating condition such as idling, Fuel Press is within +/-5 MPa of Target Common Rail Pressure.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P0627 Fuel Pump Control Circuit / Open


INSPECTION PROCEDURE

NOTICE:
  1. After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).
  2. After replacing the fuel supply pump, the ECM needs initialization (Click here).
HINT:
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
1.INSPECT FUEL SUPPLY PUMP (SUCTION CONTROL VALVE)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P0627 Fuel Pump Control Circuit / Open

  1. Disconnect the suction control valve connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		20°C (68°F)
    		1.9 to 2.3 Ω


NG
Go to step 4
OK


2.CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P0627 Fuel Pump Control Circuit / Open

  1. Disconnect the suction control valve connector.

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance (Check for open):
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    z64-2 (PCV) - C45-105 (PCV-)
    		Always
    		Below 1 Ω
    z64-1 (+B) - C45-106 (PCV+)
    		Always
    		Below 1 Ω
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    z64-2 (PCV) - C46-105 (PCV-)
    		Always
    		Below 1 Ω
    z64-1 (+B) - C46-106 (PCV+)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for short):
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    z64-2 (PCV) or C45-105 (PCV-) - Body ground
    		Always
    		10 kΩ or higher
    z64-1 (+B) or C45-106 (PCV+) - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    z64-2 (PCV) or C46-105 (PCV-) - Body ground
    		Always
    		10 kΩ or higher
    z64-1 (+B) or C46-106 (PCV+) - Body ground
    		Always
    		10 kΩ or higher


NG
Go to step 5
OK


3.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3

  1. Turn the ignition switch to ON and turn the tester on.

  1. Clear the DTCs (Click here).

  1. Start the engine and idle it for 1 second.

  1. Enter the following menus: Powertrain / Engine / DTC.

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    P0627 is output
    		A
    No DTC is output
    		B


A
Go to step 6

B
END

4.REPLACE FUEL SUPPLY PUMP

  1. Replace the fuel supply pump (Click here).



NEXT
Go to step 7

5.REPAIR OR REPLACE HARNESS OR CONNECTOR


NEXT
Go to step 7

6.REPLACE ECM

  1. Replace the ECM (Click here).



NEXT
Go to step 7

7.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Turn the ignition switch off.

  1. Start the engine and idle it for 1 second.

  1. Confirm that the DTC is not output again.

    HINT:
    Perform the following procedure using the tester to determine whether or not the DTC judgment has been carried out.

    1. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

    2. Input DTC P0627.

    3. Check that STATUS is NORMAL. If STATUS is INCOMPLETE or UNKNOWN, increase idling time.


NEXT

END