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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1182 (Engine Control System - DTCS P0222 To P0607 (VQ40DE)) >> DTC P0444, P0445: EVAP Canister Purge Volume Control Solenoid Valve >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
    3. Turn ignition switch ON.
      Fig 1: Identifying Oil Filler Cap, EVAP Service Port And Canister Purge Volume Control Solenoid Valve
      G08170601Courtesy of NISSAN NORTH AMERICA, INC.
    4. Check voltage between EVAP canister purge volume control solenoid valve terminal 2 and ground with CONSULT or tester.

    Voltage: Battery voltage 

    OK or NG 

    OK: GO TO  3.

    NG: GO TO 2.

    Fig 2: Checking Voltage Between EVAP Canister Purge Volume Control Solenoid Valve Terminal 2 And Ground Using Tester
    G08170602Courtesy of NISSAN NORTH AMERICA, INC.
  2. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E2, F32
    • Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
    • Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

    Repair harness or connectors.

  3. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between ECM terminal 45 and EVAP canister purge volume control solenoid valve terminal 1. Refer to WIRING DIAGRAM .

      Continuity should exist  .

    4. Also check harness for short to ground and short to power.

    OK or NG 

    OK (With CONSULT)>>GO TO 4.

    OK (Without CONSULT)>>GO TO  5.

    NG: Repair open circuit or short to ground or short to power in harness or connectors.

  4. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

    With CONSULT 

    1. Reconnect all harness connectors disconnected.
    2. Start engine.
    3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT. Check that engine speed varies according to the valve opening.

    OK or NG 

    OK: GO TO  6.

    NG: GO TO 5.

  5. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 6.

    NG: Replace EVAP canister purge volume control solenoid valve. Refer to "EXPLODED VIEW ".

  6. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END 

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