2004 Infiniti I35FACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

  1. CHECK OVERALL FUNCTION 

    With CONSULT-II 

    1. Start engine and warm it up to normal operating temperature.
    2. Perform VIAS SOL VALVE in ACTIVE TEST mode with CONSULT-II.
    3. Turn VIAS control solenoid valve ON and OFF, and make sure that power valve actuator rod moves.
      Fig 1: Checking Function Of Power Valve Actuator
      G00787463Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Start engine and warm it up to normal operating temperature.
    2. Rev engine quickly up to above 5,000 rpm and make sure that power valve actuator rod moves.
      Fig 2: Checking Function Of Power Valve Actuator
      G00787464Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: INSPECTION END
    2. NG: GO TO 2.
  2. CHECK VACUUM EXISTENCE 

    With CONSULT-II 

    1. Stop engine and disconnect vacuum hose connected to power valve actuator.
    2. Start engine and let it idle.
    3. Perform VIAS SOL VALVE in ACTIVE TEST mode with CONSULT-II.
    4. Turn VIAS control solenoid valve ON and OFF, and check for the existence of vacuum under the following conditions.
      Fig 3: Checking For Vacuum Existence Based On Conditions
      G00787465Courtesy of NISSAN MOTOR CO., U.S.A.
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.

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