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Home >> Nissan-Datsun >> 2009 >> Quest Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0447 To P1168 >> DTC P0456 EVAP Control System >> Overall Function Check >> With GST
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With GST

Use this procedure to check the overall function of the EVAP very small leak function. During this check, a 1st trip DTC might not be confirmed.

CAUTION:
  • Never use compressed air, doing so may damage the EVAP system.
  • Never start engine.
  • Never exceeded 4.12 kPa (0.042 kg/cm2 , 0.6 psi).
  1. Attach the EVAP service port adapter securely to the EVAP service port.
    Fig 1: Identifying EVAP Service Port And Intake Manifold Collector
    G04905068Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Set the pressure pump and a hose.
  3. Also set a vacuum gauge via 3-way connector and a hose.
  4. Turn ignition switch ON.
  5. Connect GST and select Service $08.
  6. Using Service $08 control the EVAP canister vent control valve< (close).
  7. Apply pressure and make sure the following conditions are satisfied.

    Pressure to be applied: 2.7 kPa (0.028 kg/cm 2  , 0.39 psi) 

    Time to be waited after the pressure drawn in to the EVAP system and the pressure to be dropped: 60 seconds and the pressure should not be dropped more than 0.4 kPa (0.004 kg/cm 2  , 0.06 psi). 

    Fig 2: Attaching EVAP Service Port Adapter To EVAP Service Port
    G04875285Courtesy of NISSAN MOTOR CO., U.S.A.

    If NG, go to , "DIAGNOSIS PROCEDURE ".

    If OK, go to next step.

  8. Disconnect GST.
  9. Start engine and warm it up to normal operating temperature.
  10. Turn ignition switch OFF and wait at least 10 seconds.
  11. Turn ignition switch ON.
  12. Turn ignition switch OFF and wait at least 10 seconds.
  13. Restart engine and let it idle for 90 seconds.
  14. Keep engine speed at 2, 000 RPM for 30 seconds.
  15. Turn ignition switch OFF.
NOTE: For more information, refer to GST instruction manual.