ECD SYSTEM, Diagnostic DTC:P0045

DTC Code DTC Name
P0045 Turbo / Super Charger Boost Control Solenoid Circuit / Open

DESCRIPTION

This DTC indicates that the vacuum regulating valve assembly (for turbocharger control) of the turbocharger is malfunctioning. The ECM monitors the vacuum regulating valve assembly (for turbocharger control) current to detect an open or short in the vacuum regulating valve assembly (for turbocharger control) circuit. If the current is out of the standard range, the ECM stores a DTC and illuminates the MIL immediately.

P0045
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON for 1 second

Open or short in vacuum regulating valve assembly (for turbocharger control) circuit for 0.5 seconds or more.

(1 trip detection logic)

  • Vacuum regulating valve assembly (for turbocharger control)

  • Open or short in vacuum regulating valve assembly (for turbocharger control) circuit

  • ECM

Tech Tips

If DTC P0045 is stored, the following symptoms may appear.

When the nozzle vane of the turbocharger is stuck closed:

- Vehicle surge when driving with full load

When the nozzle vane of the turbocharger is stuck open:

- Lack of power

- Vehicle surge or hesitation under light or medium load

- White smoke

WIRING DIAGRAM

A01IUT0E18

INSPECTION PROCEDURE

Note


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

  • After replacing the ECM, the new ECM needs registration Click here 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. INSPECT VACUUM REGULATING VALVE ASSEMBLY (FOR TURBOCHARGER CONTROL)


    1. Inspect the vacuum regulating valve assembly (for turbocharger control) Click here.


    NG

    REPLACE VACUUM REGULATING VALVE ASSEMBLY Click here

    OK

  2. CHECK TERMINAL VOLTAGE (POWER SOURCE)


    1. A01ISREE09
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Vacuum Regulating Valve Assembly (for Turbocharger Control))

      Disconnect the vacuum regulating valve assembly (for turbocharger control) connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C56-1 (+B) - Body ground Ignition switch ON 10 to 16 V

    3. Reconnect the vacuum regulating valve assembly (for turbocharger control) connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (VACUUM REGULATING VALVE ASSEMBLY - ECM)


    1. A01IP04E08
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Vacuum Regulating Valve Assembly (for Turbocharger Control))
      *b

      Front view of wire harness connector

      (to ECM)

      Disconnect the vacuum regulating valve assembly (for turbocharger control) connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      C56-2 (EGR) - C69-83 (VN) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      C56-2 (EGR) or C69-83 (VN) - Body ground Always 10 kΩ or higher

    4. Reconnect the vacuum regulating valve assembly (for turbocharger control) connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  4. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  5. REPLACE VACUUM REGULATING VALVE ASSEMBLY


    1. Replace the vacuum regulating valve assembly (for turbocharger control) Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  6. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.

      Tech Tips

      If the voltage at the vacuum regulating valve assembly (for turbocharger control) connector is not 11 to 14 V, repair or replace the harness and connector between the vacuum regulating valve assembly (for turbocharger control) and the EFI MAIN relay (including the EFI No. 2 fuse).


    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 to ON for 1 second or more.

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

    5. Confirm that the DTC is not output again.


    NEXT

    END