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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0456: EVAP Control System >> DTC Confirmation Procedure >> With CONSULT-II
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With CONSULT-II

  1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
  2. Make sure the following conditions are met.

    FUEL LEVEL SE: 0.25 - 1.4V 

    COOLAN TEMP/S: 0 - 32°C (32 - 90°F) 

    FUEL T/TMP SE: 0 - 35°C (32 - 95°F) 

    INT A/TEMP SE: More than 0°C (32°F) 

    If NG, turn ignition switch "OFF" and leave the vehicle in a cool place (soak the vehicle) or refilling/draining fuel until the output voltage condition of the "FUEL LEVEL SE" meets within the range above and leave the vehicle for more than 1 hour. Then start from step 1).

  3. Turn ignition switch OFF and wait at least 10 seconds.
  4. Turn ignition switch ON.
  5. Select "EVAP V/S LEAK P0456/P1456" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT-II.

    Follow the instruction displayed.

    Fig 1: Checking EVAP V/S LEAK P0456/P1456 With CONSULT-II
    G00761006Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Make sure that "OK" is displayed.

    If "NG" is displayed, refer to Diagnostic Procedure  .

    NOTE:
    • If the engine speed cannot be maintained within the range displayed on CONSULT-II screen, go to BASIC INSPECTION  .
    • Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve properly.