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Home >> Nissan-Datsun >> 2009 >> Quest Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0447 To P1168 >> DTC P0455 EVAP Control System >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK FUEL FILLER CAP DESIGN
    1. Turn ignition switch OFF.
    2. Check for genuine NISSAN fuel filler cap design.

    OK or NG 

    OK: GO TO 2.

    NG: Replace with genuine NISSAN fuel filler cap.

    Fig 1: Identifying Fuel Filler Cap Design
    G04875212Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK FUEL FILLER CAP INSTALLATION

    Check that the cap is tightened properly by rotating the cap clockwise.

    OK or NG 

    OK: GO TO 3.

    NG:

    1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.
    2. Retighten until ratcheting sound is heard.
  3. CHECK FUEL FILLER CAP FUNCTION

    Check for air releasing sound while opening the fuel filler cap.

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 4.

  4. CHECK FUEL TANK VACUUM RELIEF VALVE

    Refer to , "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 5.

    NG: Replace fuel filler cap with a genuine one.

  5. CHECK EVAP PURGE LINE

    Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks, improper connection or disconnection.

    Refer to , "DESCRIPTION ".

    OK or NG 

    OK: GO TO 6.

    NG: Repair or reconnect the hose.

  6. CLEAN EVAP PURGE LINE

    Clean EVAP purge line (pipe and rubber tube) using air blower.

    GO TO 7.

  7. CHECK EVAP CANISTER VENT CONTROL VALVE

    Check the following.

    • EVAP canister vent control valve is installed properly.

      Refer to , "REMOVAL AND INSTALLATION ".

    • EVAP canister vent control valve.

    Refer to , "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 8.

    NG: Repair or replace EVAP canister vent control valve and O-ring.

  8. INSTALL THE PRESSURE PUMP

    To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port securely.

    NOTE: Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking.
    Fig 2: Identifying EVAP Service Port And Intake Manifold Collector
    G04905068Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 3: Connecting Pressure Pump To EVAP Service Port Adapter
    G04875213Courtesy of NISSAN MOTOR CO., U.S.A.

    With CONSULT-III: GO TO 9.

    Without CONSULT-III: GO TO  10.

  9. CHECK FOR EVAP LEAK

    With CONSULT-III 

    1. Turn ignition switch ON.
    2. Select "EVAP SYSTEM CLOSE" of "WORK SUPPORT" mode with CONSULT-III.
    3. Touch "START" and apply pressure into the EVAP line until the pressure indicator reaches the middle of the bar graph.
      CAUTION:
      • Never use compressed air or a high pressure pump.
      • Never exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in the system.
    4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details.

    Refer to , "DESCRIPTION ".

    OK or NG 

    OK: GO TO  11.

    NG: Repair or replace.

    Fig 4: Identifying EVAP Leak Detector
    G04874789Courtesy of NISSAN MOTOR CO., U.S.A.
  10. CHECK FOR EVAP LEAK

    Without CONSULT-III 

    1. Turn ignition switch OFF.
    2. Apply 12 volts DC to EVAP canister vent control valve. The valve will close. (Continue to apply 12 volts until the end of test.)
      Fig 5: Identifying EVAP Control Pressure Sensor, EVAP Canister And Vent Control Valve
      G05931729Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Pressurize the EVAP line using pressure pump with 1.38 to 2.76 kPa (0.014 to 0.028 kg/cm2 , 0.2 to 0.4 psi), then remove pump and EVAP service port adapter.
      CAUTION:
      • Never use compressed air or a high pressure pump.
      • Never exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in the system.
    4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details. Refer to , "DESCRIPTION ".

    OK or NG 

    OK: GO TO  12.

    NG: Repair or replace.

    Fig 6: Identifying EVAP Leak Detector
    G04874789Courtesy of NISSAN MOTOR CO., U.S.A.
  11. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

    With CONSULT-III 

    1. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port.
    2. Start engine.
    3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode.
    4. Touch "Qu" on CONSULT-III screen to increase "PURG VOL CONT/V" opening to 100%.
    5. Check vacuum hose for vacuum when revving engine up to 2, 000 RPM.

    OK or NG 

    OK: GO TO  14.

    NG: GO TO  13.

  12. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

    Without CONSULT-III 

    1. Start engine and warm it up to normal operating temperature.
    2. Stop engine.
    3. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port.
    4. Start engine and let it idle for at least 80 seconds.
    5. Check vacuum hose for vacuum when revving engine up to 2, 000 RPM.

    Vacuum should exist. 

    OK or NG 

    OK: GO TO  15.

    NG: GO TO 13.

  13. CHECK VACUUM HOSE

    Check vacuum hoses for clogging or disconnection. Refer to , "VACUUM HOSE DRAWING ".

    OK or NG 

    OK (With CONSULT-III): GO TO 14.

    OK (Without CONSULT-III): GO TO  15.

    NG: Repair or reconnect the hose.

  14. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

    With CONSULT-III 

    1. Start engine.
    2. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III. Check that engine speed varies according to the valve opening.

    OK or NG 

    OK: GO TO  16.

    NG: GO TO 15.

  15. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

    Refer to , "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 16.

    NG: Replace EVAP canister purge volume control solenoid valve.

  16. CHECK FUEL TANK TEMPERATURE SENSOR

    Refer to , "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 17.

    NG: Replace fuel level sensor unit.

  17. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

    Refer to , "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 18.

    NG: Replace EVAP control system pressure sensor.

  18. CHECK EVAP/ORVR LINE

    Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper connection. For location, refer to ON BOARD REFUELING VAPOR RECOVERY (ORVR) .

    OK or NG 

    OK: GO TO 19.

    NG: Repair or replace hoses and tubes.

  19. CHECK RECIRCULATION LINE

    Check recirculation line between filler neck tube and fuel tank for clogging, kink, cracks, looseness and improper connection.

    OK or NG 

    OK: GO TO 20.

    NG: Repair or replace hose, tube or filler neck tube.

  20. CHECK REFUELING EVAP VAPOR CUT VALVE

    Refer to , "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 21.

    NG: Replace refueling EVAP vapor cut valve with fuel tank.

  21. CHECK INTERMITTENT INCIDENT

    Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

    INSPECTION END 

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