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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2389 (Engine Control System - DTCS P0171 To P0453) >> DTC P0443 EVAP Canister Purge Volume Control Solenoid Valve >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2007 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.
      Fig 1: Identifying EVAP Canister Purge Volume Control Solenoid Valve Harness Connector
      G04897058Courtesy of NISSAN NORTH AMERICA, INC.
    3. Turn ignition switch ON.
    4. Check voltage between EVAP canister purge volume control solenoid valve terminal 2 and ground with CONSULT-II or tester.

      Voltage: Battery voltage 

      Fig 2: Checking Voltage Between EVAP Canister Purge Volume Control Solenoid Valve Terminal 2 And Ground
      G04897072Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG 

    OK: GO TO  3.

    NG: GO TO 2.

  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: 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.

  5. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK (With CONSULT-II): GO TO 6.

    OK (Without CONSULT-II): GO TO  7.

    NG: Replace EVAP control system pressure sensor.

  6. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE 

    With CONSULT-II 

    1. Turn ignition switch OFF.
    2. Reconnect harness connectors disconnected.
    3. Start engine.
    4. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II. Check that engine speed varies according to the valve opening.
      5. Fig 3: Identifying CONSULT-II Display - ACTIVE TEST
      G04900443Courtesy of NISSAN NORTH AMERICA, INC.

    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.

  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 EVAP CANISTER VENT CONTROL VALVE 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 10.

    NG: Replace EVAP canister vent control valve.

  10. CHECK IF EVAP CANISTER SATURATED WITH WATER 
    1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached.
    2. Check if water will drain from the EVAP canister.
      3. Fig 4: Checking EVAP Canister
      G04894460Courtesy of NISSAN NORTH AMERICA, INC.

    Yes or No 

    Yes: GO TO 11.

    No: GO TO  13.

  11. 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  13.

    NG: GO TO 12.

  12. DETECT MALFUNCTIONING PART 

    Check the following.

    • EVAP canister for damage
    • EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

    Repair hose or replace EVAP canister.

  13. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    INSPECTION END 

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