2004 Infiniti M45FACTORY OEM SERVICE PROCEDURE

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.
    Fig 1: Scan Tool Display - Active test
    G00796633Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Turn VIAS control solenoid valve "ON" and "OFF", and check vacuum existence under the following conditions.
    Fig 2: Vacuum Applied Chart
    G00796634Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

  1. OK: Repair or replace power valve actuator.
  2. NG: GO TO 4. CHECK VACUUM HOSE .
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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