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Home >> Infiniti >> 2012 >> FX35 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0441 Through P1168 >> DTC P0448: EVAP Canister Vent Control Valve >> Component Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Component Inspection

  1. CHECK EVAP CANISTER VENT CONTROL VALVE-I
    1. Turn ignition switch OFF.
    2. Remove EVAP canister vent control valve from EVAP canister. Refer to "VQ35HR: REMOVAL AND INSTALLATION ".
    3. Check portion (A) of EVAP canister vent control valve for being rusted.

      Is it rusted? 

      YES: Replace EVAP canister vent control valve. Refer to "VQ35HR: REMOVAL AND INSTALLATION ".

      NO: GO TO 2.

      Fig 1: Identifying Rusted Portion Of EVAP Canister Vent Control Valve
      G04886552Courtesy of NISSAN NORTH AMERICA, INC.
  2. CHECK EVAP CANISTER VENT CONTROL VALVE-II

    With CONSULT 

    1. Reconnect harness connectors disconnected.
    2. Turn ignition switch ON.
    3. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode.
    4. Check air passage continuity and operation delay time.

      Check new O-ring is installed properly. 

      Condition (VENT CONTROL/V) Air passage continuity between (A) and (B)
      ON Not existed
      OFF Existed

    Operation takes less than 1 second. 

    Fig 2: Identifying EVAP Canister Vent Control Valve Ports
    G04886553Courtesy of NISSAN NORTH AMERICA, INC.

    Without CONSULT 

    1. Disconnect EVAP canister vent control valve harness connector.
    2. Check air passage continuity and operation delay time as per the following conditions:

      Check new O-ring is installed properly. 

      Condition Air passage continuity between (A) and (B)
      12 V direct current supply between terminals 1 and 2 Not existed
      OFF Existed

      Operation takes less than 1 second. 

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: GO TO 3.

  3. CHECK EVAP CANISTER VENT CONTROL VALVE-III

    With CONSULT 

    1. Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower.
    2. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode.
    3. Check air passage continuity and operation delay time.

      Check new O-ring is installed properly. 

      Condition (VENT CONTROL/V) Air passage continuity between (A) and (B)
      ON Not existed
      OFF Existed

      Operation takes less than 1 second. 

    Without CONSULT 

    1. Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower.
    2. Check air passage continuity and operation delay time as per the following conditions:

      Check new O-ring is installed properly. 

      Condition Air passage continuity between (A) and (B)
      12 V direct current supply between terminals 1 and 2 Not existed
      OFF Existed
      Fig 3: Identifying EVAP Canister Vent Control Valve Ports
      G04886553Courtesy of NISSAN NORTH AMERICA, INC.

      Operation takes less than 1 second. 

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Replace EVAP canister vent control valve. Refer to "VQ35HR: REMOVAL AND INSTALLATION ".