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HOMESERVICE MANUALSNISSAN-DATSUN2012SENTRA SE-RREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM - DTCS P0171 TO P0507 (QR25DE)DTC P0456: EVAP CONTROL SYSTEMOVERALL FUNCTION CHECK
2012 Nissan-Datsun Sentra SE-R

Overall Function Check

2012 Nissan-Datsun Sentra SE-RSECTION Overall Function Check

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 (1) adapter securely to the EVAP service port.
    • ←: Vehicle front
    Fig 1: Identifying EVAP Service Port
    G04926036Courtesy of NISSAN NORTH AMERICA, INC.
  2. Set the pressure pump and a hose.
  3. Also set the pressure pump with pressure gauge to the EVAP service port adapter.
  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 check that 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 (0.0041 kg/cm 2  , 0.06 psi)  .

    If NG, go to "DIAGNOSIS PROCEDURE ".

    If OK, go to next step.

    Fig 2: Checking EVAP Service Port For Leakage Using Pressure Pump
    G04875285Courtesy of NISSAN NORTH AMERICA, INC.
  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. Restart engine and let it idle for 90 seconds.
  12. Keep engine speed at 2, 000 rpm for 30 seconds.
  13. Turn ignition switch OFF.
NOTE: For more information, refer to GST Instruction Manual.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.