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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (2 Of 4)) >> DTC/Circuit Diagnosis >> DTC P0443: EVAP Canister Purge Volume Control Solenoid Valve >> DTC Diagnosis Procedure >> PR25DD engine

PR25DD engine

WARNING: This page is about a different variant/trim than selected.
  1. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between EVAP canister purge volume control solenoid valve harness connector and ground.

      +

      -

      Voltage

      EVAP canister purge volume control solenoid valve

      Connector

      Terminal

      F29

      2

      Ground

      Battery voltage

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 2.

  2. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R harness connector.
    3. Check the continuity between EVAP canister purge volume control solenoid valve harness connector and IPDM E/R harness connector.

      +

      -

      Continuity

      EVAP canister purge volume control solenoid valve

      IPDM E/R

      Connector

      Terminal

      Connector

      Terminal

      F29

      2

      F10

      73

      Existed
    4. Also check harness for short to ground.

    Is the inspection result normal?

    YES

    Perform the trouble diagnosis for power supply circuit.

    NO

    Repair or replace error-detected parts.

  3. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between EVAP canister purge volume control solenoid valve harness connector and ECM harness connector.

      +

      -

      Continuity

      EVAP canister purge volume control solenoid valve

      ECM

      Connector

      Terminal

      Connector

      Terminal

      F29

      1

      F90

      122

      Existed
    4. Also check harness for short to power.

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace error-detected parts.

  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.

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Replace EVAP control system pressure sensor. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

  5. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR 

    Check the EVAP control system pressure sensor. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    With CONSULT: GO TO 6.

    YES

    Without CONSULT: GO TO 7.

    NO

    Replace EVAP control system pressure sensor. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

  6. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE 

    SYMBOL With CONSULT

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

    Is the inspection result normal?

    YES

    GO TO 8.

    NO

    GO TO 7.

  7. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE 

    Check the EVAP canister purge volume control solenoid valve. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 8.

    NO

    Replace EVAP canister purge volume control solenoid valve. Refer to Component Location .

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

    Is the inspection result normal?

    YES

    GO TO 9.

    NO

    Clean the rubber tube using an air blower.

  9. CHECK EVAP CANISTER VENT CONTROL VALVE 

    Check the EVAP canister vent control valve. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 10.

    NO

    Replace EVAP canister vent control valve. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

  10. 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.
    2. Check if water will drain from EVAP canister.
      G04160077Courtesy of NISSAN NORTH AMERICA, INC.

    Does water drain from the EVAP canister?

    YES

    GO TO 11.

    NO

    Check intermittent incident. Refer to Intermittent Incident .

  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 2.1 kg (4.6 lb).

    Is the inspection result normal?

    YES

    Check intermittent incident. Refer to Intermittent Incident .

    NO

    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. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

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