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.

A01X3JXE04
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 and ECM (1 trip detection logic).

  • Turbo motor driver

  • Open or short in turbo motor driver circuit

  • Turbo motor driver 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 and ECM (1 trip detection logic).

  • Turbo motor driver

  • Open or short in turbo motor driver circuit

  • Turbo motor driver ground problem

  • ECM

WIRING DIAGRAM

A01X8H5E02

CAUTION / NOTICE / HINT

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 (See page ) and initialization Click here.

PROCEDURE


  1. INSPECT TURBO MOTOR DRIVER (POWER SOURCE CIRCUIT)


    1. A01X5BEE01
      *1 Front view of wire harness connector: (to Turbo Motor Driver)

      Disconnect the turbo motor driver connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A48-1 (+B) - A48-2 (GND) Engine switch on (IG) 11 to 14 V
      A48-16 (+B2) - A48-17 (GND2) Engine switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A48-2 (GND) - Body ground Always Below 1 Ω
      A48-17 (GND2) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) Click here

    OK

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


    1. Disconnect the turbo motor driver connector.

    2. Disconnect the ECM connector.

      A01X1V9E01

    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) - A48-5 (VNTO) Always Below 1 Ω
      C45-50 (VNTI) - A48-4 (VNTI) Always Below 1 Ω
      C45-47 (VNO2) - A48-20 (VNO2) Always Below 1 Ω
      C45-48 (VNI2) - A48-11 (VNI2) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      C46-49 (VNTO) - A48-5 (VNTO) Always Below 1 Ω
      C46-50 (VNTI) - A48-4 (VNTI) Always Below 1 Ω
      C46-47 (VNO2) - A48-20 (VNO2) Always Below 1 Ω
      C46-48 (VNI2) - A48-11 (VNI2) Always Below 1 Ω
      Standard Resistance (Check for Short)
      for LHD
      Tester Connection Condition Specified Condition
      C45-49 (VNTO) or A48-5 (VNTO) - Body ground Always 10 kΩ or higher
      C45-50 (VNTI) or A48-4 (VNTI) - Body ground Always 10 kΩ or higher
      C45-47 (VNO2) or A48-20 (VNO2) - Body ground Always 10 kΩ or higher
      C45-48 (VNI2) or A48-11 (VNI2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      C46-49 (VNTO) or A48-5 (VNTO) - Body ground Always 10 kΩ or higher
      C46-50 (VNTI) or A48-4 (VNTI) - Body ground Always 10 kΩ or higher
      C46-47 (VNO2) or A48-20 (VNO2) - Body ground Always 10 kΩ or higher
      C46-48 (VNI2) or A48-11 (VNI2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TURBO MOTOR DRIVER - ECM) Click here

    OK

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


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the engine switch off.

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

    5. Remove the front fender liner LH.

    6. Disconnect the turbo motor driver connector.

    7. Reconnect the turbo motor driver connector.

    8. Turn the engine switch on (IG) and turn the tester on.

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

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

    11. Read the DTCs.

      Result
      Display (DTC Output) Proceed to
      DTC is output A
      DTC is not output B

    B

    END

    A

  4. REPLACE TURBO MOTOR DRIVER


    1. Replace the turbo motor driver Click here.

      Note

      Make sure that foreign matter does not enter the connector(s) when replacing parts.


    NEXT

  5. CHECK WHETHER DTC OUTPUT RECURS


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the engine switch off.

    4. Turn the engine switch on (IG) and turn the tester on.

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

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

    7. Read the DTCs.

      Result
      Display (DTC Output) Proceed to
      DTC is output A
      DTC is not output B

    B

    END

    A

  6. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  7. REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  8. REPAIR OR REPLACE HARNESS OR CONNECTOR (TURBO MOTOR DRIVER - ECM)


    NEXT

  9. 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