ECD SYSTEM (w/o DPF), Diagnostic DTC:P00AF, P00B0

DTC Code DTC Name
P00AF Turbocharger/Supercharger Boost Control "A" Module Performance
P00B0 Turbocharger/Supercharger Boost Control "B" Module Performance

DESCRIPTION

The turbocharger system is comprised of the Variable Nozzle (VN) type turbocharger, turbo motor driver and ECM.

The turbocharger has a nozzle vane which opens and closes to control the volume of the exhaust gas flowing into the turbine. This, in turn, controls the boost pressure. When the nozzle vane moves towards the closing direction, the pressure increases. When the vane moves towards the opening direction, the pressure decreases.

The turbocharger actuator, which consists of the DC motor and the nozzle vane position sensor, is built on the turbocharger sub-assembly, and activates the nozzle vane. The nozzle vane position sensor detects the opening angle of the nozzle vane. The turbo motor driver receives an opening angle request from the ECM and a nozzle vane position signal from the nozzle vane position sensor. Based on these signals, the turbo motor driver operates the DC motor and adjusts the nozzle vane opening angle. The turbo motor driver sends the status as a turbo driver status signal to the ECM

The ECM sends a target nozzle vane position signal to the turbo motor driver to obtain the nozzle vane position for the optimal boost pressure in accordance with the driving conditions.

A015CU5E04
P00AF
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
After idling for 5 seconds When a communication error occurs between the turbo motor driver (for Bank 1) and ECM (1 trip detection logic).

  • Turbo motor driver (for Bank 1)

  • Open or short in turbo motor driver (for Bank 1) circuit

  • Turbo motor driver (for Bank 1) ground problem

  • ECM
P00B0
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
After idling for 5 seconds When a communication error occurs between the turbo motor driver (for Bank 2) and ECM (1 trip detection logic).

  • Turbo motor driver (for Bank 2)

  • Open or short in turbo motor driver (for Bank 2) circuit

  • Turbo motor driver (for Bank 2) ground problem

  • ECM

WIRING DIAGRAM

A015CL4E01

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, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

  • Excessive electrical noise, such as from wireless radios or electrical modifications, may cause a DTC to be stored.

Note

After replacing the ECM, the new ECM needs registration Click here and initialization Click here.

PROCEDURE


  1. INSPECT TURBO MOTOR DRIVER (POWER SOURCE CIRCUIT)


    1. A015CQKE02

      Disconnect the turbo motor driver connector.

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

      Standard Voltage
      for Bank 1
      Tester Connection Condition Specified Condition
      Turbo motor driver connector-3 (+B) - Turbo motor driver connector-4 (GND) Ignition switch ON 11 to 14 V
      for Bank 2
      Tester Connection Condition Specified Condition
      Turbo motor driver connector-3 (+B2) - Turbo motor driver connector-4 (GND2) Ignition switch ON 11 to 14 V

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

      Standard Resistance
      for Bank 1
      Tester Connection Condition Specified Condition
      Turbo motor driver connector-4 (GND) - Body ground Always Below 1 Ω
      for Bank 2
      Tester Connection Condition Specified Condition
      Turbo motor driver connector-4 (GND2) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  2. INSPECT TURBO MOTOR DRIVER (for Bank 1 and Bank 2)


    1. Remove the rear fender splash shield sub-assembly RH.

    2. Remove the front fender liner LH.

    3. Connect the intelligent tester to the DLC3.

    4. Turn the ignition switch to ON and turn the tester on.

    5. Enter the following menus: Powertrain / Engine / DTC.

    6. Read the DTCs.

      Tech Tips

      Record the output DTCs.

    7. Clear the DTCs Click here.

    8. Turn the ignition switch off.

    9. A015CO3

      Interchange the connectors for the turbo motor driver of bank 1 and bank 2.

    10. Start the engine.

    11. Enter the following menus: Powertrain / Engine / DTC.

    12. Read the DTCs.

      Result
      Display (DTC Output) Proceed to
      DTCs change B
      DTCs do not change A

    B

    REPLACE TURBO MOTOR DRIVER (for Bank 1 or Bank 2) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (TURBO MOTOR DRIVER - ECM)


    1. Disconnect the turbo motor driver connector.

    2. A0159OJE01

      Disconnect the ECM connector.

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

      Standard Resistance (Check for Open)
      for LHD
      Tester Connection Condition Specified Condition
      C45-49 (VNTO) - B-4 (VNTO) Always Below 1 Ω
      C45-50 (VNTI) - B-3 (VNTI) Always Below 1 Ω
      C45-47 (VNO2) - D-4 (VNO2) Always Below 1 Ω
      C45-48 (VNI2) - D-3 (VNI2) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      C46-49 (VNTO) - B-4 (VNTO) Always Below 1 Ω
      C46-50 (VNTI) - B-3 (VNTI) Always Below 1 Ω
      C46-47 (VNO2) - D-4 (VNO2) Always Below 1 Ω
      C46-48 (VNI2) - D-3 (VNI2) Always Below 1 Ω
      Standard Resistance (Check for Short)
      for LHD
      Tester Connection Condition Specified Condition
      C45-49 (VNTO) or B-4 (VNTO) - Body ground Always 10 kΩ or higher
      C45-50 (VNTI) or B-3 (VNTI) - Body ground Always 10 kΩ or higher
      C45-47 (VNO2) or D-4 (VNO2) - Body ground Always 10 kΩ or higher
      C45-48 (VNI2) or D-3 (VNI2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      C46-49 (VNTO) or B-4 (VNTO) - Body ground Always 10 kΩ or higher
      C46-50 (VNTI) or B-3 (VNTI) - Body ground Always 10 kΩ or higher
      C46-47 (VNO2) or D-4 (VNO2) - Body ground Always 10 kΩ or higher
      C46-48 (VNI2) or D-3 (VNI2) - Body ground Always 10 kΩ or higher

    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. REPAIR OR REPLACE HARNESS OR CONNECTOR


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  6. REPLACE TURBO MOTOR DRIVER (for Bank 1 or Bank 2)


    1. Replace the turbo motor driver (for Bank 1 or Bank 2) Click here.


    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 off.

    4. After starting the engine, idle it for 5 seconds.

    5. Enter the following menus: Powertrain / Engine / DTC.

    6. Confirm that the DTC is not output again.


    NEXT

    END