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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (4 Of 4)) >> DTC/Circuit Diagnosis >> On Board Refueling Vapor Recovery (ORVR) >> Diagnosis Procedure >> PR25DD engine

PR25DD engine

WARNING: This page is about a different variant/trim than selected.
  1. INSPECTION START 

    Check whether the following symptoms are present.

    A: Fuel odor from EVAP canister is strong.

    B: Cannot refuel/Fuel odor from the fuel filler opening is strong while refueling.

    A or B

    A

    GO TO 2.

    B

    GO TO 7.

  2. CHECK EVAP CANISTER 
    1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).
    2. Weigh the EVAP canister with 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

    GO TO 3.

    NO

    GO TO 4.

  3. CHECK IF EVAP CANISTER IS SATURATED WITH WATER 

    Check if water will drain from EVAP canister

    GNSILL0233651Courtesy of NISSAN NORTH AMERICA, INC.

    Does water drain from the EVAP canister?

    YES

    GO TO 4.

    NO

    GO TO 6.

  4. REPLACE EVAP CANISTER 

    Replace EVAP canister with a new one. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

    GO TO 5.

  5. DETECT MALFUNCTIONING PART 

    Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.

    Repair or replace EVAP hose. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

  6. CHECK REFUELING EVAP VAPOR CUT VALVE 

    Check refueling EVAP vapor cut valve. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace refueling EVAP vapor cut valve with fuel tank. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

  7. CHECK EVAP CANISTER 
    1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).
    2. Weigh the EVAP canister with 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

    GO TO 8.

    NO

    GO TO 9.

  8. CHECK IF EVAP CANISTER IS SATURATED WITH WATER 

    Check if water will drain from EVAP canister.

    GNSILL0233651Courtesy of NISSAN NORTH AMERICA, INC.

    Does water drain from the EVAP canister?

    YES

    GO TO 6.

    NO

    GO TO 11.

  9. REPLACE EVAP CANISTER 

    Replace EVAP canister with a new one. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

    GO TO 10.

  10. DETECT MALFUNCTIONING PART 

    Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.

    Repair or replace EVAP hose. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

  11. CHECK VENT HOSES AND VENT TUBES 

    Check hoses and tubes between EVAP canister and refueling control valve for clogging, kinks, looseness and improper connection.

    Is the inspection result normal?

    YES

    GO TO 12.

    NO

    Repair or replace hoses and tubes.

  12. CHECK FILLER NECK TUBE 

    Check recirculation line for clogging, dents and cracks.

    Is the inspection result normal?

    YES

    GO TO 13.

    NO

    Replace filler neck tube.

  13. CHECK REFUELING EVAP VAPOR CUT VALVE 

    Check refueling EVAP vapor cut valve. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 14.

    NO

    Replace refueling EVAP vapor cut valve with fuel tank. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

  14. CHECK FUEL FILLER TUBE 

    Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.

    Is the inspection result normal?

    YES

    GO TO 15.

    NO

    Replace fuel filler tube. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

  15. CHECK ONE-WAY FUEL VALVE-1 

    Check one-way valve for clogging.

    Is the inspection result normal?

    YES

    GO TO 16.

    NO

    Repair or replace one-way fuel valve with fuel tank. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

  16. CHECK ONE-WAY FUEL VALVE-2 
    1. Check that fuel is drained from the tank.
    2. Remove fuel filler tube and hose. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).
    3. Check one-way fuel valve for operation as per the following.
      G04073663Courtesy of NISSAN NORTH AMERICA, INC.

      When a stick is inserted, the valve should open, when removing stick it should close.

      Do not drop any material into the tank.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace fuel filler tube or replace one-way fuel valve with fuel tank. Refer to Removal and Installation (AWD) or Removal and Installation (FWD).

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