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

A01BDCAE02

INSPECTION PROCEDURE

Tech Tips

Read freeze frame data using an intelligent tester. Freeze frame data record 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, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

PROCEDURE


  1. CHECK 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. Select the following menu items: Powertrain / Engine / DTC.

    4. Read DTCs.

      Result
      Display (DTC Output) Proceed to
      P0046 A
      P0046 and other DTCs 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 to 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

    INSPECT TURBO MOTOR DRIVER Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS

  3. INSPECT TURBO MOTOR DRIVER


    1. Voltage Inspection


      1. Turn the ignition switch ON (IG).

        A01BC0HE15

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

        Standard voltage
        Tester Connection Specified Condition
        +B (B43-3) - GND (B43-4) 11 to 14 V

    2. Output Waveform Inspection


      1. Turn the ignition switch ON (IG).

        A01BFUJE06

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

        OK
        Tester Connection Condition Specified Condition
        VNTI (B43-2) - GND (B43-4) Ignition switch ON Correct waveform is as shown

    NG

    REPLACE TURBO MOTOR DRIVER

    OK

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


    1. A01BC1AE03

      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. A01BGZ6E03

      Disconnect the D65 DC motor connector.

    2. Disconnect the B43 turbo motor driver connector.

    3. Measure the resistance of the wire harness side connector.

      Standard resistance (Check for open)
      Tester Connection Specified Condition
      M+ (B43-12) - D65-2 Below 1 Ω
      M- (B43-5) - D65-1 Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Specified Condition
      M+ (B43-12) or D65-2 - Body ground 10 kΩ or higher
      M- (B43-5) or D65-1 - Body ground 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. Select the following menu items: Powertrain / Engine / DTC / Clear.

    4. Clear DTCs.

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

    6. Select the following menu items: Powertrain / Engine / DTC.

    7. Read DTCs.

      Result
      Display (DTC Output) Proceed To
      P0046 A
      No output B

    B

    END

    A

    REPLACE TURBOCHARGER SUB-ASSEMBLY