Dtc P0627 Fuel Pump Control Circuit / Open

Двигатель. Toyota Rav4. Aca30, 33, 38 Ala30
Система Управления Двигателем 2Ad-Fhv. Toyota Rav4. Aca30, 33, 38 Ala30

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT SUPPLY PUMP ASSEMBLY

CHECK WIRE HARNESS (SCV - ECM)

CHECK WHETHER DTC OUTPUT RECURS

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)
  1. Open or short in suction control valve circuit
  2. Suction control valve
  3. ECM

УКАЗАНИЕ:
  1. For more information on the supply pump (suction control valve) and the common rail system, refer to the system description (see page RAV4_ACA30 RM000000XSN006X.html).
  2. 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.

Reference:
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 (see page RAV4_ACA30 RM000001884002X_06.html).

INSPECTION PROCEDURE

ПРИМЕЧАНИЕ:
  1. After replacing the ECM, the new ECM needs registration (see page RAV4_ACA30 RM000000TJ4007X.html) and initialization (see page RAV4_ACA30 RM000000TIN007X.html).
  2. After replacing a supply pump, the ECM needs initialization (see page RAV4_ACA30 RM000000TIN007X.html).
1.INSPECT SUPPLY PUMP ASSEMBLY


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0627 Fuel Pump Control Circuit / Open

  1. Disconnect the B46 suction control valve connector.

  1. 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 Ω

  1. Reconnect the suction control valve connector.



NG
REPLACE SUPPLY PUMP ASSEMBLY
OK


2.CHECK WIRE HARNESS (SCV - ECM)


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0627 Fuel Pump Control Circuit / Open

  1. Disconnect the B46 suction control valve connector.

  1. Disconnect the B32 ECM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    B46-1 - B32-42 (PCV+)
    		Below 1 Ω
    B46-2 - B32-41 (PCV-)
    		Below 1 Ω
    B46-1 or B32-42 (PCV+) - Body ground
    		10 kΩ or higher
    B46-2 or B32-41 (PCV-) - Body ground
    		10 kΩ or higher

  1. Reconnect the suction control valve connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3

  1. Turn the ignition switch on (IG) and turn the tester ON.

  1. Clear DTCs (see page RAV4_ACA30 RM000000PDK01FX.html).

  1. Turn the ignition switch on (IG) and leave it for approximately 1 minute.

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

  1. Read the DTCs.

    Result:
    Display (DTC Output)
    		Proceed to
    P0627
    		A
    No output
    		B


B
CHECK FOR INTERMITTENT PROBLEMS
A

REPLACE ECM