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Home >> Nissan-Datsun >> 2009 >> Cube Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0181 To P0607 >> DTC P0448: EVAP Canister Vent Control Valve >> Component Inspection
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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.
    3. Check portion (A) of EVAP canister vent control valve for being rusted.

    Is it rusted? 

    YES: Replace EVAP canister vent control valve.

    NO: GO TO 2.

    Fig 1: Checking EVAP Canister Vent Control Valve-I
    G04886552Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK EVAP CANISTER VENT CONTROL VALVE-II

    With CONSULT-III 

    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.

    Make sure new O-ring is installed properly. 

    Fig 2: Checking Air Passage Continuity And Operation Delay Time
    G04886553Courtesy of NISSAN MOTOR CO., U.S.A.
    AIR PASSAGE CONTINUITY REFERENCE CHART

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

    Operation takes less than 1 second. 

    Without CONSULT-III 

    Check air passage continuity and operation delay time under the following conditions.

    Make sure new O-ring is installed properly. 

    AIR PASSAGE CONTINUITY REFERENCE CHART

    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: GO TO 3.

    NO: Replace EVAP canister vent control valve.

  3. CHECK EVAP CANISTER VENT CONTROL VALVE-III

    With CONSULT-III 

    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.

    Make sure new O-ring is installed properly. 

    AIR PASSAGE CONTINUITY REFERENCE CHART

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

    Operation takes less than 1 second. 

    Without CONSULT-III 

    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 under the following conditions.

    Make sure new O-ring is installed properly. 

    Fig 3: Checking Air Passage Continuity And Operation Delay Time
    G04886553Courtesy of NISSAN MOTOR CO., U.S.A.
    AIR PASSAGE CONTINUITY REFERENCE CHART

    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: Replace EVAP canister vent control valve.

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