ECD SYSTEM(w/ DPF), Diagnostic DTC:P0001

DTC Code DTC Name
P0001 Fuel Volume Regulator Control Circuit / Open

DESCRIPTION

The suction control valve is installed to the supply pump assembly. The supply pump assembly (suction control valve) is controlled using pulse-width modulated signals. When the control system is operating, the ECM controls the supply pump assembly (suction control valve) using multiple pulse duty ratios. The system adjusts the rail pressure to the standard level calculated by the ECM.

P0001
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON

Open in supply pump assembly (suction control valve) circuit for 0.1 seconds.

(1 trip detection logic)

  • Open or short in supply pump assembly (suction control valve) circuit

  • Supply pump assembly (suction control valve)

  • ECM
Related Data List
DTC No. Data List
P0001

  • Target Common Rail Pressure

  • Common Rail Pressure

  • Target Pump SCV Current

WIRING DIAGRAM

A01VLT1E07
A01VLT1E08

CAUTION / NOTICE / HINT

Note


  • When replacing the ECM, the ECM needs Registration and Initialization Click here.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. 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.

PROCEDURE


  1. INSPECT SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)


    1. Inspect the supply pump assembly (suction control valve) Click here.


    NG

    REPLACE SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE) Click here

    OK

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


    1. Disconnect the B67 supply pump assembly (suction control valve) connector.

    2. Disconnect the B104 ECM connector (for LHD).

    3. Disconnect the B103 ECM connector (for RHD).

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B67-2 - B104-30 (PCV) Always Below 1 Ω
      B67-2 or B104-30 (PCV) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B67-2 - B103-30 (PCV) Always Below 1 Ω
      B67-2 or B103-30 (PCV) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. CHECK TERMINAL VOLTAGE (POWER SOURCE OF SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE))


    1. A01VJ8DE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Supply Pump Assembly (Suction Control Valve))

      Disconnect the supply pump assembly (suction control valve) connector.

    2. Turn the ignition switch to ON.

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      B67-1 - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR (SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE) - NO. 1 INTEGRATION RELAY) Click here

    OK

  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0001)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Turn the ignition switch off and wait for 30 seconds or more.

    6. Turn the ignition switch to ON and wait for 1 second or more.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    8. Read the DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0001 is output B

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

  5. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  6. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Turn the ignition switch off and wait for 30 seconds or more.

    6. Turn the ignition switch to ON and wait for 1 second or more.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    8. Confirm that the DTC is not output again.


    NEXT

    END

  7. REPAIR OR REPLACE HARNESS AND CONNECTOR (SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE) - NO. 1 INTEGRATION RELAY)


    NEXT

  8. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Turn the ignition switch off and wait for 30 seconds or more.

    6. Turn the ignition switch to ON and wait for 1 second or more.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    8. Confirm that the DTC is not output again.


    NEXT

    END

  9. REPAIR OR REPLACE HARNESS OR CONNECTOR


    NEXT

  10. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Turn the ignition switch off and wait for 30 seconds or more.

    6. Turn the ignition switch to ON and wait for 1 second or more.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    8. Confirm that the DTC is not output again.


    NEXT

    END

  11. REPLACE SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)


    1. Replace the supply pump assembly (suction control valve) Click here.


    NEXT

  12. BLEED AIR FROM FUEL SYSTEM


    1. Bleed the air from the fuel system Click here.


    NEXT

  13. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Turn the ignition switch off and wait for 30 seconds or more.

    6. Turn the ignition switch to ON and wait for 1 second or more.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    8. Confirm that the DTC is not output again.


    NEXT

    END