СИСТЕМА ECD, Diagnostic DTC:P0046, P0047, P0048

DTC Code DTC Name
P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance
P0047 Turbocharger/Supercharger Boost Control "A" Circuit Low
P0048 Turbocharger/Supercharger Boost Control "A" Circuit High

DESCRIPTION

These DTCs indicate that the DC motor of the turbocharger sub-assembly is malfunctioning. The ECM monitors the DC motor current to detect an open or short in the DC motor circuit. If the current meets certain criteria, the ECM stores a DTC and illuminates the MIL immediately.

The DC motor is used to operate the nozzle vane of the turbocharger sub-assembly. The nozzle vane opens and closes to change the velocity of exhaust gasses in order to control the turbo pressure. The ECM varies the duty ratio of the DC motor in accordance with the driving conditions.

If the nozzle vane is stuck closed (DC motor stuck off), drivability may deteriorate at wide open throttle. If the nozzle vane is stuck open (DC motor stuck on), drivability may deteriorate at intermediate throttle positions or the engine power may be insufficient.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance DC motor current is 1.57 A or higher for 5 seconds or more when the motor is operating (1 trip detection logic).
  • Open or short in DC motor circuit

  • DC motor (built into turbocharger sub-assembly)

  • Turbocharger nozzle vane is stuck or movement is irregular

Comes on DTC stored
P0047 Turbocharger/Supercharger Boost Control "A" Circuit Low The DC motor duty ratio is 80% or more and the motor current is 0.5 A or less for 3 seconds or more (1 trip detection logic).
  • Open in DC motor circuit

  • DC motor (built into turbocharger sub-assembly)

  • Turbocharger nozzle vane is stuck or movement is irregular

Comes on DTC stored
P0048 Turbocharger/Supercharger Boost Control "A" Circuit High Overcurrent is detected 25 times or more (0.4 seconds or more) (1 trip detection logic).
  • Short in DC motor (built into turbocharger sub-assembly) circuit

  • DC motor (built into turbocharger sub-assembly)

  • Turbocharger nozzle vane is stuck or movement is irregular

Comes on DTC stored
Tip:
  • If DTC P0046, P0047 and/or P0048 is stored due to the nozzle vane being stuck closed, the following symptom may appear:

    • Vehicle surge when driving with full load

  • If DTC P0046, P0047 and/or P0048 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

CONFIRMATION DRIVING PATTERN

DTC No. DTC Detection Drive Pattern
P0046 Ignition switch ON for 5 seconds
P0047 2 seconds after engine is started, race engine for 1 second
P0048

WIRING DIAGRAM

A012GIME01
Table 1.
*a Shielded
*b DC motor (Built into Turbocharger sub-assembly)

CAUTION / NOTICE / HINT

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

  • After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click hereНажмите здесь).

Tip:

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 FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0046, P0047 AND/OR P0048)

    1. Connect the GTS to the DLC3.

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

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

    4. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes
      Result
      ResultProceed to
      DTC P0046, P0047 and/or P0048 is outputA
      DTC P0046, P0047 and/or P0048 and other DTCs are outputB
      Tip:

      If any DTCs other than P0046, P0047 and/or P0048 are output, troubleshoot those DTCs first.

    B

    GO TO DTC CHART Click here Нажмите здесь


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

    1. Inspect the turbocharger sub-assembly (DC motor operation).

      Click hereНажмите здесь

      Result
      Proceed to
      OK
      NG
    OK

    CHECK FOR INTERMITTENT PROBLEMS Click hereНажмите здесь


    NG
  3. INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR RESISTANCE)

    1. Inspect the turbocharger sub-assembly (DC motor resistance).

      Click hereНажмите здесь

      Result
      Proceed to
      OK
      NG
    NG Нажмите здесь

    OK
  4. 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
      o1-2 (MA) - B164-107 (M-) Always Below 1 Ω
      o1-1 (MB) - B164-108 (M+) Always Below 1 Ω
      o1-2 (MA) or B164-107 (M-) - Body ground Always 10 kΩ or higher
      o1-1 (MB) or B164-108 (M+) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG
    NG Нажмите здесь

    OK
  5. REPLACE ECM

    1. Replace the ECM.

      Click hereНажмите здесь

      Result
      Proceed to
      NEXT
    NEXT Нажмите здесь

    GO TO STEP 7


  6. REPAIR OR REPLACE HARNESS OR CONNECTOR

    1. Repair or replace the harness or connector.

      Result
      Proceed to
      NEXT
    NEXT
  7. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs
    5. Turn the ignition switch off and wait for 30 seconds or more.

    6. 2 seconds after engine is started, race engine for 1 second.

    7. Turn the GTS on.

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

    9. Confirm that the DTC is not output.

      Powertrain > Engine and ECT > Trouble Codes
      Result
      Proceed to
      NEXT
    NEXT

    END


  8. REPLACE TURBOCHARGER SUB-ASSEMBLY

    1. Replace the turbocharger sub-assembly.

      Click hereНажмите здесь

      Result
      Proceed to
      NEXT
    NEXT Нажмите здесь

    GO TO STEP 7