SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P040314, P140000, P140596, P141004

DTC Code DTC Name
P040314 Exhaust Gas Recirculation "A" Control Circuit 1 Open
P140000 Exhaust Gas Recirculation "A" Control Circuit 2 Open
P140596 Exhaust Gas Recirculation "A" Control Circuit 3 Open
P141004 Exhaust Gas Recirculation "A" Control Circuit 4 Open

DESCRIPTION

Refer to DTC P04019C.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P040314 Exhaust Gas Recirculation "A" Control Circuit 1 Open Open or short in EGR1 circuit for 1 second or more (1 trip detection logic).

  • Open or short in EGR valve assembly circuit

  • EGR valve assembly

  • ECM

 Comes on DTC stored SAE Code: P0403
P140000 Exhaust Gas Recirculation "A" Control Circuit 2 Open Open or short in EGR2 circuit for 1 second or more (1 trip detection logic).

  • Open or short in EGR valve assembly circuit

  • EGR valve assembly

  • ECM

 Comes on DTC stored SAE Code: P0403
P140596 Exhaust Gas Recirculation "A" Control Circuit 3 Open Open or short in EGR3 circuit for 1 second or more (1 trip detection logic).

  • Open or short in EGR valve assembly circuit

  • EGR valve assembly

  • ECM

 Comes on DTC stored SAE Code: P0403
P141004 Exhaust Gas Recirculation "A" Control Circuit 4 Open Open or short in EGR4 circuit for 1 second or more (1 trip detection logic).

  • Open or short in EGR valve assembly circuit

  • EGR valve assembly

  • ECM

 Comes on DTC stored SAE Code: P0403

MONITOR DESCRIPTION

These DTCs are stored if an open or short in the EGR valve assembly circuit is detected.

Example:


MONITOR STRATEGY

Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN

B004PG8E28

  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG).

  3. Turn the GTS on.

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

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

  6. Turn the power switch on (IG) [A].

  7. Turn the GTS on.

  8. Put the engine in Inspection Mode (Maintenance Mode).

    Click here

  9. Start the engine and warm it up [B].

  10. With the engine running, drive the vehicle at 20 km/h (12 mph) or more for 10 minutes or more [C].

    CAUTION:

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

    Tech Tips

    If the engine stops, further depress the accelerator pedal to restart the engine.

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

  12. 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.

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

  14. Input the DTC: P040314, P140000, P140596 or P141004.

  15. 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 is NORMAL, the system is normal.

    • If the judgment result is ABNORMAL, the system is malfunctioning.

    • If the judgment result is INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

B004QSOE01

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. PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Put the engine in Inspection Mode (Maintenance Mode).


      Powertrain > Hybrid Control > Utility
      Tester Display
      Inspection Mode

    5. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

      Tech Tips

      The A/C switch and all accessories should be off.

    6. Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Intake Manifold Absolute Pressure, EGR Step Position and Engine Independent.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the EGR Step Position
      Data List Display
      Intake Manifold Absolute Pressure
      EGR Step Position
      Engine Independent

    7. Confirm that the value of Data List item Engine Independent is "Operate" then check the value of Intake Manifold Absolute Pressure while performing the Active Test.

      Note


      • Do not leave the EGR valve open for 10 seconds or more during the Active Test.

      • Be sure to return the EGR valve to step 0 when the Active Test is completed.

      • Do not open the EGR valve 30 steps or more during the Active Test.

      OK
      The value of Intake Manifold Absolute Pressure changes in response to the EGR step position when the value of Engine Independent is "Operate".
      Standard
      - Control the EGR Step Position (Active Test)
      0 Steps 0 to 30 Steps

      Intake Manifold Absolute Pressure

      (Data List)

      		 (EGR valve is fully closed) Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed

      Tech Tips


      • If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Perform the Active Test after charge control is complete ("Operate" is displayed).

      • While performing the Active Test, if the increase in the value of Intake Manifold Absolute Pressure is small, the EGR valve assembly may be malfunctioning.

      • Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of Intake Manifold Absolute Pressure may occur while performing the Active Test. However, the amount that the value of Intake Manifold Absolute Pressure increases will be smaller than normal.

      Result
      Result Proceed to
      The value of Intake Manifold Absolute Pressure increases by 10 kPa(abs) or more, compared to when the EGR valve was fully closed (0 step) OK
      Other than above NG

      Tech Tips

      10 kPa = 1.45 psi


    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

  2. INSPECT EGR VALVE ASSEMBLY


    1. Inspect the EGR valve assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE EGR VALVE ASSEMBLY Click here Perform "Inspection After Repair" after replacing the EGR valve assembly. Click here

    OK

  3. CHECK TERMINAL VOLTAGE (POWER SOURCE OF EGR VALVE ASSEMBLY)


    1. Disconnect the EGR valve assembly connector.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      C10-2 (+B1) - Body ground Power switch on (IG) 11 to 14 V
      C10-5 (+B2) - Body ground Power switch on (IG) 11 to 14 V
      Result
      Result
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 INTEGRATION RELAY - EGR VALVE ASSEMBLY)

    OK

  4. CHECK HARNESS AND CONNECTOR (EGR VALVE ASSEMBLY - ECM)


    1. Disconnect the EGR 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
      C10-4 (EGR1) - C31-140 (EGR1) Always Below 1 Ω
      C10-3 (EGR2) - C31-106 (EGR2) Always Below 1 Ω
      C10-6 (EGR3) - C31-107 (EGR3) Always Below 1 Ω
      C10-1 (EGR4) - C31-105 (EGR4) Always Below 1 Ω
      C10-4 (EGR1) or C31-140 (EGR1) - Body ground and other terminals Always 10 kΩ or higher
      C10-3 (EGR2) or C31-106 (EGR2) - Body ground and other terminals Always 10 kΩ or higher
      C10-6 (EGR3) or C31-107 (EGR3) - Body ground and other terminals Always 10 kΩ or higher
      C10-1 (EGR4) or C31-105 (EGR4) - 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