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Home >> Nissan-Datsun >> 2024 >> Sentra S >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (2 Of 4) >> DTC/Circuit Diagnosis >> DTC P0441: EVAP Control System >> Confirmation Procedure

Confirmation Procedure

  1. PRECONDITIONING 

    If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

    Will CONSULT be used?

    >>

    GO TO 2.

    >>

    GO TO 5.

  2. PERFORM DTC CONFIRMATION PROCEDURE-1 

    SYMBOL With CONSULT TESTING CONDITION: Always perform test at a temperature of 5°C (41°F) or more.

    1. Start the engine and warm it up to normal operating temperature.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Turn ignition switch ON.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Start engine and let it idle for at least 70 seconds.
    6. Select "PURG FLOW P0441" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode of "ENGINE" using CONSULT.
    7. Touch "START".

    Is "COMPLETED" displayed on CONSULT screen?

    >>

    GO TO 4.

    >>

    GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE-2 

    When the following conditions are met, "TESTING" will be displayed on the CONSULT screen. Maintain the conditions continuously until "TESTING" changes to "COMPLETED". (It will take at least 35 seconds.)

    Selector lever Suitable position
    VHCL SPEED SE 32 - 120 km/h (20 - 75 MPH)
    ENG SPEED 500 - 3, 300 RPM
    B/FUEL SCHDL 1.0 - 6.5 msec
    COOLANT TEMP/S More than 0°C (32°F)
    CAUTION:

    Always drive vehicle at a safe speed.

    NOTE: SYMBOL If "TESTING" does not change for a long time, retry from step 2.

    Is "COMPLETED" displayed on CONSULT screen?

    >>

    GO TO 4.

    >>

    Perform DTC CONFIRMATION PROCEDURE again. GO TO 2.

  4. PERFORM DTC CONFIRMATION PROCEDURE-3 

    Touch "SELF-DIAG RESULTS".

    Is "OK" displayed on CONSULT screen?

    >>

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    >>

    Confirmation after repair: INSPECTION END

    >>

    Proceed to DTC Diagnosis Procedure .

  5. PERFORM COMPONENT FUNCTION CHECK 
    NOTE: SYMBOL Use component function check to check the overall monitoring function of the EVAP control system purge flow monitoring. During this check, a 1st trip DTC might not be confirmed.

    SYMBOL With GST

    1. Lift up drive wheels.
    2. Start engine (VDC switch OFF) and warm it up to normal operating temperature.
    3. Turn ignition switch OFF and wait at least 10 seconds.
    4. Start engine and wait at least 70 seconds.
    5. Set voltmeter probes to ECM harness connector terminals as per the following.
      ECM
      Connector + -
      Terminal
      E16 131 158
    6. Check EVAP control system pressure sensor value at idle speed and note it.
    7. Establish and maintain the following conditions for at least 1 minute.
      Air conditioner switch ON
      Headlamp switch ON
      Rear window defogger switch ON
      Engine speed Approx. 3, 000 RPM
      Selector lever position Any position other than P, N or R
    8. Verify that EVAP control system pressure sensor value stays 0.1 V less than the value at idle speed (measured at step 6) for at least 1 second.

    Is the inspection result normal?

    >>

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    >>

    Confirmation after repair: INSPECTION END

    >>

    Proceed to DTC Diagnosis Procedure .