SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P003373

DTC Code DTC Name
P003373 Turbocharger / Supercharger Bypass Valve "A" Control Actuator Stuck Closed

DESCRIPTION

Refer to DTC P003312.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P003373 Turbocharger / Supercharger Bypass Valve "A" Control Actuator Stuck Closed The boost pressure does not drop despite control to open the air by-pass valve assembly (1 trip detection logic).

  • Air by-pass valve assembly

  • No. 2 turbo pressure sensor

  • Wire harness or connector

  • ECM

 - DTC stored SAE: P0039

MONITOR DESCRIPTION

If the throttle valve is closed while the boost pressure is applied, the air by-pass valve assembly opens and the excess pressure between the turbocharger and the throttle valve is released. If the boost pressure does not drop for a certain amount of time despite control to open the air by-pass valve assembly, the ECM determines that the air by-pass valve assembly is stuck closed and stores a DTC.

CONFIRMATION DRIVING PATTERN

B005A7UE01

  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for at least 30 seconds.

  5. Turn the engine switch on (IG) and turn the GTS on.

  6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [A].

  7. Accelerate to 50 km/h (31 mph) or more with the accelerator pedal fully depressed [B].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

  8. Quickly release the accelerator pedal from the fully depressed position [C].

  9. Enter the following menus: Powertrain / Engine / Trouble Codes [D].

  10. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  12. Input the DTC: P003373.

  13. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform steps [B] through [D] again.

WIRING DIAGRAM

Refer to DTC P003312 for air by-pass valve assembly circuit.

Click here

Refer to DTC P023511 for No. 2 turbo pressure sensor circuit.

Click here

CAUTION / NOTICE / HINT

Tech Tips

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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 DTC P003373)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Trouble Codes.

    5. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P003373 is output A
      DTC P003373 and other DTCs are output B

      Tech Tips

      If any DTCs other than P003373 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. INSPECT NO. 2 TURBO PRESSURE SENSOR


    1. Inspect the No. 2 turbo pressure sensor.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    CHECK TERMINAL VOLTAGE (POWER SOURCE OF NO. 2 TURBO PRESSURE SENSOR) Click here

    OK

  3. INSPECT AIR BY-PASS VALVE ASSEMBLY


    1. Inspect the air by-pass valve assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE AIR BY-PASS VALVE ASSEMBLY Click here

    OK

  4. CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR BY-PASS VALVE ASSEMBLY)


    1. B005AF8C01
      *a

      Front view of wire harness connector

      (to Air By-pass Valve Assembly)

      Disconnect the air by-pass valve assembly connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C31-1 - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (AIR BY-PASS VALVE ASSEMBLY - EFI-MAIN NO. 1 RELAY)

    OK

  5. CHECK HARNESS AND CONNECTOR (AIR BY-PASS VALVE ASSEMBLY - ECM)


    1. Disconnect the air by-pass valve assembly 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
      C31-2 - C20-67 (ABV) Always Below 1 Ω
      C31-2 or C20-67 (ABV) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK WHETHER DTC OUTPUT RECURS (P003373)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTC.


      Powertrain > Engine > Clear DTCs

    5. Turn the engine switch off and wait for at least 30 seconds.

    6. Turn the engine switch on (IG).

    7. Turn the GTS on.

    8. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

    9. Enter the following menus: Powertrain / Engine / Trouble Codes.

    10. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P003373 is output A
      DTCs are not output B

    A

    REPLACE ECM Click here

    B

    END

  7. CHECK TERMINAL VOLTAGE (POWER SOURCE OF NO. 2 TURBO PRESSURE SENSOR)


    1. B005AGEC12
      *a

      Front view of wire harness connector

      (to No. 2 Turbo Pressure Sensor)

      Disconnect the No. 2 turbo pressure sensor connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      C15-3 (VC) - C15-1 (E2) Engine switch on (IG) 4.5 to 5.5 V
      C15-2 (PTA) - C15-1 (E2) Engine switch on (IG) 3.0 to 5.5 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (NO. 2 TURBO PRESSURE SENSOR - ECM) Click here

    OK

  8. REPLACE NO. 2 TURBO PRESSURE SENSOR


    1. Replace the No. 2 turbo pressure sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  9. CHECK WHETHER DTC OUTPUT RECURS (P003373)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTC.


      Powertrain > Engine > Clear DTCs

    5. Turn the engine switch off and wait for at least 30 seconds.

    6. Turn the engine switch on (IG).

    7. Turn the GTS on.

    8. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

    9. Enter the following menus: Powertrain / Engine / Trouble Codes.

    10. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P003373 is output A
      DTCs are not output B

    A

    GO TO STEP 3 Click here

    B

    END

  10. CHECK HARNESS AND CONNECTOR (NO. 2 TURBO PRESSURE SENSOR - ECM)


    1. Disconnect the No. 2 turbo pressure sensor 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
      C15-3 (VC) - C20-140 (VPTA) Always Below 1 Ω
      C15-1 (E2) - C20-139 (EPTA) Always Below 1 Ω
      C15-2 (PTA) - C20-108 (PTA) Always Below 1 Ω
      C15-3 (VC) or C20-140 (VPTA) - Body ground and other terminals Always 10 kΩ or higher
      C15-2 (PTA) or C20-108 (PTA) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR