SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P003314

DTC Code DTC Name
P003314 Turbocharger / Supercharger Bypass Valve "A" Control Circuit Short to Ground or Open

DESCRIPTION

Refer to DTC P003312.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P003314 Turbocharger / Supercharger Bypass Valve "A" Control Circuit Short to Ground or Open Open or short in air by-pass valve assembly circuit (1 trip detection logic).

  • Open or short in air by-pass valve assembly circuit

  • Air by-pass valve assembly

  • Semiconductor pwr integration ECU

  • ECM

 Does not come on DTC stored SAE Code: P0034

MONITOR DESCRIPTION

The ECM monitors the output voltage while the air by-pass valve assembly is operating.

The air by-pass valve assembly turns on and off according to switching of a transistor inside the ECM.

If a continuous mismatch occurs between the ECM transistor state and the output voltage, the ECM determines there is a malfunction in the air by-pass valve assembly circuit and stores this DTC.

CONFIRMATION DRIVING PATTERN

B003X5GE11

  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: P003314.

  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.

Click here

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

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. 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

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

    B003V01C10
    *a

    Front view of wire harness connector

    (to Air By-pass Valve Assembly)

    1. 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 Condition Specified Condition
      W4-1 - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (SEMICONDUCTOR PWR INTEGRATION ECU - AIR BY-PASS VALVE ASSEMBLY) Click here

    OK

  3. 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
      W4-2 - F78-67 (ABV) Always Below 1 Ω
      W4-2 or F78-67 (ABV) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P003314)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      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. Start the engine and warm it up.

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

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


      Powertrain > Engine > Utility
      Tester Display
      All Readiness

    11. Input the DTC: P003314.

    12. Check the DTC judgment result.

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P003314 is output)

      		 B

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

    REPLACE ECM Click here

  5. CHECK HARNESS AND CONNECTOR (SEMICONDUCTOR PWR INTEGRATION ECU - AIR BY-PASS VALVE ASSEMBLY)


    1. Disconnect the semiconductor pwr integration ECU connector.

    2. Disconnect the air by-pass valve assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2G-1 - W4-1 Always Below 1 Ω
      2G-1 or W4-1 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SEMICONDUCTOR PWR INTEGRATION ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR