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Home >> Infiniti >> 2023 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (Diagnostics) (1 Of 2) >> Component Parts /Circuit Diagnosis >> Intake Valve Timing Control Solenoid Valve >> Component Inspection
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Component Inspection

  1. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-I 
    1. Turn ignition switch OFF.
    2. Disconnect intake valve timing control solenoid valve harness connector.
    3. Check resistance between intake valve timing control solenoid valve terminals as per the following.

      Terminals

      Resistance

      1 and 2

      7.0 - 7.7 Ohm [at 20 deg.C (68 deg.F)]

      1 or 2 and ground

      INF.Ohm

      (Continuity should not exist)

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Replace malfunctioning intake valve timing control solenoid valve. Refer to TIMING CHAIN : Exploded View .

  2. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II 
    1. Remove intake valve timing control solenoid valve.
    2. Provide 12 V DC between intake valve timing control solenoid valve terminals 1 and 2, and then interrupt it. Check that the plunger moves as shown in the figure.
      GNSDB12530Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Never apply 12 V DC continuously for 5 seconds or more. Doing so may result in damage to the coil in intake valve timing control solenoid valve.
      NOTE: Always replace O-ring when intake valve timing control solenoid valve is removed.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace malfunctioning intake valve timing control solenoid valve. Refer to TIMING CHAIN : Exploded View .