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Home >> Infiniti >> 2023 >> QX60 Autograph, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Periodic Maintenance >> EVAP Leak Check >> Inspection
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EVAP Leak Check: Inspection

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 EVAP system.
NOTE: SYMBOL
  • Never start engine.
  • Improper installation of EVAP service port adapter to the EVAP service port may cause a leak.

SYMBOL

  1. To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port.
    GNSDB37429Courtesy of NISSAN
  2. Turn ignition switch ON.
  3. On CONSULT screen, select "ENGINE">>"Work support">>"EVAP SYSTEM CLOSE".
  4. Touch "START". A bar graph (Pressure indicating display) will appear on the screen.
  5. Apply positive pressure to the EVAP system until the pressure indicator reaches the middle of the bar graph.
  6. Remove EVAP service port adapter and hose with pressure pump.
  7. Locate the leak using a leak detector. Refer to System Description .
    GNSDB36348Courtesy of NISSAN

SYMBOL

  1. To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port.
    GNSDB37429Courtesy of NISSAN
  2. Apply battery voltage between the terminals of EVAP canister vent control valve to make a closed EVAP system.
  3. To locate the leak, deliver positive pressure to the EVAP system until pressure gauge points reach 1.38 to 2.76 kPa (0.014 to 0.028 kg/cm2, 0.2 to 0.4 psi).
  4. Remove EVAP service port adapter and hose with pressure pump.
  5. Locate the leak using a leak detector. Refer to System Description .
    GNSDB36348Courtesy of NISSAN
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