ECD SYSTEM(for DPF), Diagnostic DTC:P2564, P2565

DTC Code DTC Name
P2564 Turbocharger/Supercharger Boost Control Position Sensor "A" Circuit Low
P2565 Turbocharger/Supercharger Boost Control Position Sensor "A" Circuit High

DESCRIPTION

The variable nozzle vane type turbocharger consists primarily of a compressor wheel, turbine wheel, nozzle vane, unison ring, DC motor and nozzle vane position sensor.

The nozzle vane position sensor consists of a Hall IC and a magnetic yoke that rotates in unison with the movement of the linkage that actuates the nozzle vane. The nozzle vane position sensor converts the changes in the magnetic flux that are caused by the rotation of the DC motor (hence, the rotation of the magnetic yoke) into electric signals, and outputs them to the ECM. The ECM determines the actual nozzle vane position from the electric signals in order to calculate the target nozzle vane position.

A004MUHE15
P2564
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON for 1 second VNA voltage is 0.1 V or less for 2.1 seconds (1 trip detection logic).
  • Nozzle vane position sensor (turbocharger sub-assembly)

  • Open or short in nozzle vane position sensor circuit

  • ECM

P2565
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON for 1 second VNA voltage is 4.9 V or higher for 2.1 seconds (1 trip detection logic).
  • Nozzle vane position sensor (turbocharger sub-assembly)

  • Open or short in nozzle vane position sensor circuit

  • ECM

Tech Tips

If DTC P2564 and/or P2565 is stored due to the nozzle vane being stuck open, the following symptoms may appear:


  • - Lack of power

  • - Vehicle surge or hesitation under light or medium load

WIRING DIAGRAM

A004Q0RE10
*a Nozzle Vane Position Sensor

CAUTION / NOTICE / HINT

Note

After replacing the ECM, the new ECM needs registration (See page ) and initialization Click here.

Tech Tips

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.

PROCEDURE


  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P2564 AND P2565)


    1. Connect the intelligent tester to the DLC3.

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

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

    4. Read the DTCs.

      Result
      Result Proceed to
      P2564 and/or P2565 is output A
      P2564 and/or P2565 and other DTCs are output B

    B
    A
  2. CHECK HARNESS AND CONNECTOR (ECM - NOZZLE VANE POSITION SENSOR)


    1. Disconnect the nozzle vane position sensor connector.

    2. Disconnect the ECM.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S2-3 (VTA) - B39-124 (VNA) Always Below 1 Ω
      S2-2 (E2) - B39-100 (VNE2) Always Below 1 Ω
      S2-1 (VC) - B39-101 (VNVC) Always Below 1 Ω
      S2-3 (VTA) or B39-124 (VNA) - Body ground Always 10 kΩ or higher
      S2-1 (VC) or B39-101 (VNVC) - Body ground Always 10 kΩ or higher
    4. Reconnect the nozzle vane position sensor connector.

    5. Reconnect the ECM connector.


    NG
    OK
  3. INSPECT ECM (VNA VOLTAGE)


    1. A004N5ZE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Nozzle Vane Position Sensor)

      Disconnect the nozzle vane position sensor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      S2-1 (VC) - S2-2 (E2) Ignition switch ON 4.5 to 5.5 V
    3. Reconnect the nozzle vane position sensor connector.


    NG
    OK
  4. REPLACE TURBOCHARGER SUB-ASSEMBLY (NOZZLE VANE POSITION SENSOR)


    1. Replace the turbocharger sub-assembly Click here.


    NEXT
  5. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT
  6. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


    NEXT
  7. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the ignition switch off.

    4. Turn the ignition switch off and leave the vehicle for 15 seconds.

    5. Turn the ignition switch to ON for 1 second.

    6. Confirm that the DTC is not output again.

      Tech Tips

      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 and ECT / Utility / All Readiness.

      2. Input DTC P2564 and/or P2565.

      3. Check that STATUS is NORMAL. If STATUS is INCOMPLETE or N/A, idle the engine.


    NEXT