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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0441: EVAP Control System >> Diagnostic Procedure >> 2. Check Purge Flow >> With CONSULT-II
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With CONSULT-II

  1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP service port and install vacuum gauge. For the location of EVAP service port, refer to EVAPORATIVE EMISSION LINE DRAWING .
    Fig 1: Identifying EVAP Service Port
    G00796020Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Start engine and let it idle.
  3. Select "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II.
    Fig 2: Scan Tool Display - Active Test
    G00796021Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Rev engine up to 2,000 RPM.
  5. Touch "Qd" and "Qu" on CONSULT-II screen to adjust "PURG VOL CONT/V" opening and check vacuum existence.
    Fig 3: Vacuum Conditions Chart
    G00796022Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

  1. OK: GO TO 7. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE .
  2. NG: GO TO 4. CHECK EVAP PURGE LINE .