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Home >> Infiniti >> 2017 >> QX50 RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 4) >> DTC / Circuit Diagnosis >> DTC P0441: EVAP Control System >> DTC Logic >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. INSPECTION START

    Do you have CONSULT?

    Do you have CONSULT?

    YES 

    GO TO STEP 2  .

    NO 

    GO TO STEP 6  .

  2. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

    TESTING CONDITION: 

    Always perform test at a temperature of 5°C (41°F) or more. 

    GO TO STEP 3  .

  3. PERFORM DTC CONFIRMATION PROCEDURE-I

    G-20With CONSULT 

    1. Start 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 with CONSULT.
    7. Touch "START".

    Is "COMPLETED" displayed on CONSULT screen?

    YES 

    GO TO STEP 5  .

    NO 

    GO TO STEP 4  .

  4. PERFORM DTC CONFIRMATION PROCEDURE-II

    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, 000 RPM
    B/FUEL SCHDL 1.3 - 9.0 msec
    COOLAN TEMP/S More than 0°C (32°F)
    CAUTION:

    Always drive vehicle at a safe speed.

    Is "COMPLETED" displayed on CONSULT screen?

    YES 

    GO TO STEP 5  .

    NO 

    Perform DTC CONFIRMATION PROCEDURE again. GO TO STEP 3  .

  5. PERFORM DTC CONFIRMATION PROCEDURE-III

    Touch "SELF-DIAG RESULTS".

    Which is displayed on CONSULT screen?

    OK 

    INSPECTION END

    NG 

    Go to DIAGNOSIS PROCEDURE .

  6. PERFORM COMPONENT FUNCTION CHECK

    Perform component function check. Refer to COMPONENT FUNCTION CHECK .

    NOTE:

    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.

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    Go to DIAGNOSIS PROCEDURE .

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