ECD SYSTEM (w/o DPF), Diagnostic DTC:P0046

DTC Code DTC Name
P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance

DESCRIPTION

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 ECM outputs a signal to the turbo motor driver, which actuates the DC motor, to control the nozzle vane position.

DTC No. DTC Detection Condition Trouble Area
P0046

Either of following conditions met:


  • DC motor duty ratio +/- 100% for 1.3 seconds or more

  • DC motor current 2.2 A or more for 5 seconds or more when motor driving

    (1 trip detection logic)

  • DC motor (turbocharger sub-assembly)

  • Turbo motor driver

WIRING DIAGRAM

A01BA7RE02

INSPECTION PROCEDURE

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 FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO P0046)


    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
      P0046 is output A
      P0046 and other DTCs are output B

      Tech Tips

      If any DTCs other than P0046 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART

    A

  2. INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR OPERATION)


    1. Turn the ignition switch to ON.

    2. Turn the ignition switch off and check the DC motor operation (check the operation link movement).

      OK
      When ignition switch is turned off, operation link moves as shown in A through D in illustration below.
      Operation link and motor rod move smoothly when moving from position shown in A to that shown in B, and from position shown in B to that shown in C.
      A01BC6XE01

    NG

    CHECK TURBO MOTOR DRIVER Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS

  3. CHECK TURBO MOTOR DRIVER


    1. Voltage Inspection


      1. A01BC0HE23
        Text in Illustration
        *a

        Component with harness connected

        (Turbo Motor Driver)

        Turn the ignition switch to ON.

      2. Measure the voltage between the terminals of the turbo motor driver connector.

        Standard Voltage
        Tester Connection Condition Specified Condition
        B53-3 (+B) - B53-4 (GND) Always 11 to 14 V

    2. Output Waveform Inspection


      1. A01BFUJE12
        Text in Illustration
        *a

        Component with harness connected

        (Turbo Motor Driver)

        Turn the ignition switch to ON.

      2. Check the waveform of the ECM connectors using an oscilloscope.

        OK
        Tester Connection Switch Condition Specified Condition
        B53-2 (VNTI) - B53-4 (GND) Ignition switch ON Correct waveform is as shown

    NG

    REPLACE TURBO MOTOR DRIVER

    OK

  4. INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR RESISTANCE)


    1. A01BC1AE13
      Text in Illustration
      *a

      Component with harness connected

      (DC Motor)

      Disconnect the D65 DC motor connector.

    2. Measure the DC motor resistance.

      Standard resistance
      1 to 100 Ω

    NG

    REPLACE TURBOCHARGER SUB-ASSEMBLY

    OK

  5. CHECK HARNESS AND CONNECTOR (DC MOTOR - TURBO MOTOR DRIVER)


    1. Disconnect the D65 DC motor connector.

    2. Disconnect the B53 turbo motor driver connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      B53-12 (M+) - D65-2 (M+) Always Below 1 Ω
      B53-5 (M-) - D65-1 (M-) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B53-12 (M+) or D65-2 (M+) - Body ground Always 10 kΩ or higher
      B53-5 (M-) or D65-1 (M-) - Body ground Always 10 kΩ or higher

    4. Reconnect the turbo motor driver connector.

    5. Reconnect the DC motor connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK WHETHER DTC OUTPUT RECURS (DTC P0046)


    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 / Clear.

    4. Clear the DTCs Click here.

    5. Drive the vehicle with a city driving pattern at least 10 minutes.

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

    7. Read the DTCs.

      Result
      Result Proceed to
      P0046 is output A
      No DTC is output B

    B

    END

    A

    REPLACE TURBOCHARGER SUB-ASSEMBLY