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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1179 (Engine Control System - DTCS P0181 To P0550 (VK56DE)) >> DTC P0443: 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 (1) harness connector.
      • EVAP service port (2)
      • : Vehicle front
    3. Turn ignition switch ON.
      Fig 1: Identifying EVAP Canister Purge Volume Control Solenoid Valve And EVAP Service Port
      G08165059Courtesy of NISSAN NORTH AMERICA, INC.
    4. Check voltage between EVAP canister purge volume control solenoid valve terminal 1 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 1 And Ground Using Tester
    G08165060Courtesy of NISSAN NORTH AMERICA, INC.
  2. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E2, F32
    • IPDM E/R harness connector E119
    • 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 2. Refer to WIRING DIAGRAM .

      Continuity should exist  .

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

    OK or NG 

    OK: GO TO 4.

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

  4. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
    1. Disconnect EVAP control system pressure sensor harness connector.
    2. Check connectors for water.

    Water should not exist  .

    OK or NG 

    OK: GO TO 5.

    NG: Replace EVAP control system pressure sensor. Refer to "REMOVAL AND INSTALLATION ".

  5. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK (With CONSULT)>>GO TO 6.

    OK (Without CONSULT)>>GO TO  7.

    NG: Replace EVAP control system pressure sensor. Refer to "REMOVAL AND INSTALLATION ".

  6. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

    With CONSULT 

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

    OK or NG 

    OK: GO TO  8.

    NG: GO TO 7.

  7. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

    Refer to Component Inspection 

    OK or NG 

    OK: GO TO 8.

    NG: Replace EVAP canister purge volume control solenoid valve. Refer to INTAKE MANIFOLD .

  8. CHECK RUBBER TUBE FOR CLOGGING
    1. Disconnect rubber tube connected to EVAP canister vent control valve.
    2. Check the rubber tube for clogging.

    OK or NG 

    OK: GO TO 9.

    NG: Clean the rubber tube using an air blower.

  9. CHECK DRAIN FILTER

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 10.

    NG: Replace drain filter. Refer to EVAPORATIVE EMISSION SYSTEM .

  10. CHECK EVAP CANISTER VENT CONTROL VALVE

    Refer to "Component Inspection ".

    OK or NG 

    OK: GO TO 11.

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

  11. CHECK IF EVAP CANISTER IS SATURATED WITH WATER
    1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. Refer to "REMOVAL AND INSTALLATION ".
    2. Check if water will drain from the EVAP canister.

    Yes or No 

    Yes: GO TO  12.

    No: GO TO  14.

    Fig 3: Checking EVAP Canister Vent Control Valve For Water
    G08165061Courtesy of NISSAN NORTH AMERICA, INC.
  12. CHECK EVAP CANISTER

    Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached.

    The weight should be less than 2.0 kg (4.4 lb)  .

    OK or NG 

    OK: GO TO  14.

    NG: GO TO 13.

  13. DETECT MALFUNCTIONING PART

    Check the following.

    • EVAP canister for damage
    • EVAP hose between EVAP canister and drain filter for clogging or poor connection

    Repair hose or replace EVAP canister. Refer to "REMOVAL AND INSTALLATION ".

  14. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    >> INSPECTION END 

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