ECD SYSTEM(for Swirl Control Valve), Diagnostic DTC:P0045

DTC Code DTC Name
P0045 Turbocharger / Supercharger Boost Control "A" Circuit / Open

DESCRIPTION

Turbo pressure is controlled through the use of variable turbine geometry equipped to the turbocharger. Adjustable guide vanes are installed to the outside of the turbine wheel on the exhaust side.

A DC motor is used to drive and change the angle of the guide vanes. This adjusts the amount of exhaust gas added to the turbine and changes the drive torque of the turbine wheel. As a result, the boost pressure is adjusted as needed.

DTC No.

DTC Detection Condition

Trouble Area

P0045

Open in DC motor (turbocharger sub-assembly) circuit for 0.22 seconds.

(1 trip detection logic)

  • Open in DC motor (turbocharger sub-assembly) circuit

  • DC motor (turbocharger sub-assembly)

  • ECM

WIRING DIAGRAM

A205135E85

CAUTION / NOTICE / HINT

Note:

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

Tip:

  • 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. CHECK HARNESS AND CONNECTOR (DC MOTOR - ECM)

    1. Disconnect the DC motor 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

      C83-1 (VN+A) - C112-51 (VN+A)

      Always

      Below 1 Ω

      C83-2 (VN-A) - C112-21 (VN-A)

      Always

      Below 1 Ω

      C83-1 (VN+A) or C112-51 (VN+A) - Body ground

      Always

      10 kΩ or higher

      C83-2 (VN-A) or C112-21 (VN-A) - Body ground

      Always

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

  2. INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR)

    1. Disconnect the turbocharger sub-assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      1 (VN+A) - 2 (VN-A)

      Always

      0.3 to 100 Ω

    REPLACE TURBOCHARGER SUB-ASSEMBLYClick here

  3. REPLACE ECM

    1. Replace the ECM (Click here).

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  4. REPAIR OR REPLACE HARNESS OR CONNECTOR

    1. Repair or replace the harness or connector.

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  5. REPLACE TURBOCHARGER SUB-ASSEMBLY

    1. Replace the turbocharger sub-assembly (Click here).

  6. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the GTS to the DLC3.

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

    3. Clear the DTCs (Click here).

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

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

    8. Confirm that the DTC is not output again.

    END