2004 Infiniti I35FACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

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

    OK or NG 

    1. OK: GO TO 2.
    2. NG: Replace with genuine NISSAN fuel filler cap.
  2. CHECK FUEL FILLER CAP INSTALLATION 

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

    OK or NG 

    1. OK: GO TO 3.
    2. NG
      • Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.
      • 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 

    1. OK: GO TO  5 .
    2. NG: GO TO 4.
  4. CHECK FUEL TANK VACUUM RELIEF VALVE 
    1. Wipe clean valve housing.
    2. Check valve opening pressure and vacuum. See Figure and Figure .

      Pressure: 

      15.3 - 20.0 kPa (0.156 - 0.204 kg/cm 2, 2.22 - 2.90 psi) 

      Vacuum: 

      -6.0 to -3.3 kPa (-0.061 to -0.034 kg/cm 2, -0.87 to -0.48 psi) 

      CAUTION: Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.

    OK or NG 

    1. OK: GO TO 5.
    2. 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 EVAPORATIVE EMISSION SYSTEM  .

    OK or NG 

    1. OK: GO TO 6.
    2. NG: Repair or reconnect the house.
  6. CLEAN EVAP PURGE LINE 

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

    1. GO TO 7.
  7. CHECK EVAP CANISTER VENT CONTROL VALVE, O-RING AND CIRCUIT 

    Refer to DTC CONFIRMATION PROCEDURE  .

    OK or NG 

    1. OK: GO TO 8.
    2. NG: Repair or replace EVAP canister vent control valve and O-ring or harness/connector.
  8. INSTALL THE PRESSURE PUMP 

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

    NOTE: Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking.
    1. Models with CONSULT-II: GO TO 9.
    2. Models without CONSULT-II: GO TO  10 .
  9. CHECK FOR EVAP LEAK 

    With CONSULT-II

    1. Turn ignition switch ON.
    2. Select EVAP SYSTEM CLOSE of WORK SUPPORT mode with CONSULT-II.
    3. Touch START and apply pressure into the EVAP line until the pressure indicator reaches the middle of the bar graph.
      NOTE:
      • Never use compressed air or a high pressure pump.
      • Do not exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in the system.
Factory Service Tools

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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.