ECD SYSTEM(w/ Urea SCR System), 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.

B001CFIE01
P2564
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Engine switch on (IG) for 2 seconds or more VNA voltage is 0.1 V or less for 2.1 seconds (1 trip detection logic).

  • Nozzle vane position sensor (turbocharger nozzle vane control actuator)

  • Open or short in nozzle vane position sensor circuit

  • ECM
P2565
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Engine switch on (IG) for 2 seconds or more VNA voltage is 4.9 V or higher for 2.1 seconds (1 trip detection logic).

  • Nozzle vane position sensor (turbocharger nozzle vane control actuator)

  • 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

B001HOUE01
*a Nozzle Vane Position Sensor (Turbocharger Nozzle Vane Control Actuator)

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 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. CHECK TERMINAL VOLTAGE (POWER SOURCE OF NOZZLE VANE POSITION SENSOR)


    1. B001GBGE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Nozzle Vane Position Sensor)

      Disconnect the nozzle vane position sensor connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C144-1 (VNVC) - C144-2 (VNE2) Engine switch on (IG) 4.5 to 5.5 V

    4. Reconnect the nozzle vane position sensor connector.


    NG

    CHECK ECM (POWER SOURCE OF NOZZLE VANE POSITION SENSOR) Click here

    OK

  2. INSPECT NOZZLE VANE POSITION SENSOR (VNA VOLTAGE)


    1. B001E3ME01
      Text in Illustration
      *a

      Component with harness connected

      (ECM)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C151-23 (VNA) - C151-22 (VNE2) Engine switch on (IG) 2.3 to 2.7 V

    OK

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (NOZZLE VANE POSITION SENSOR - ECM)


    1. Disconnect the nozzle vane position sensor connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C144-3 (VTA1) - C151-23 (VNA) Always Below 1 Ω
      C144-2 (VNE2) - C151-22 (VNE2) Always Below 1 Ω
      C144-3 (VTA1) or C151-23 (VNA) - Body ground and other terminals Always 10 kΩ or higher
      C144-2 (VNE2) or C151-22 (VNE2) - Body ground and other terminals Always 10 kΩ or higher

    4. Reconnect the nozzle vane position sensor connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  4. CHECK ECM (CHECK RESISTANCE)


    1. B001CCOE01
      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 resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C144-1 (VNVC) - C144-3 (VTA1) Engine switch off No short or open circuit
      C144-3 (VTA1) - C144-2 (VNE2)

    3. Reconnect the nozzle vane position sensor connector.


    NG

    REPLACE ECM Click here

    OK

  5. REPLACE TURBOCHARGER NOZZLE VANE CONTROL ACTUATOR (NOZZLE VANE POSITION SENSOR)


    1. Replace the turbocharger nozzle vane control actuator Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  6. CHECK ECM (POWER SOURCE OF NOZZLE VANE POSITION SENSOR)


    1. B001CAIE01
      Text in Illustration
      *a

      Component with harness connected

      (ECM)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C151-30 (VNVC) - C151-22 (VNE2) Engine switch on (IG) 4.5 to 5.5 V

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    NG

  7. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  8. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


    NEXT

  9. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the engine switch off and leave the vehicle for 15 seconds.

    4. Turn the engine switch on (IG) for 2 seconds or more.

    5. Confirm that the DTC is not output again.

      Tech Tips

      Perform the following procedure using the GTS 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

    END