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Home >> Infiniti >> 2020 >> QX50 Essential, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (4 Of 12) >> DTC/Circuit Diagnosis >> DTC P0235: TC Boost Sensor >> Component Inspection
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Component Inspection

  1. CHECK TURBOCHARGER BOOST SENSOR 
    1. Turn ignition switch OFF.
    2. Remove turbocharger boost sensor with its harness connector.
    3. Install pressure pump (A) to turbocharger boost sensor (1).
      GNSJMBIA0871Z-871Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: When insert a pressure pump hose to the sensor, be careful to the damage of the sensor housing.
    4. Turn ignition switch ON.
    5. Check the voltage between ECM harness connector terminals as per the following conditions.
      NOTE:
      • Always calibrate the pressure pump gauge when using it.
      • Inspection should be done at room temperature [10 - 30 deg.C (50 - 86 deg.F)].

      ECM

      Condition [Pressure (Relative to atmospheric pressure)]

      Voltage

      (Approx.)

      Connector

      +

      -

      Terminal

      F51

      47

      45

      0 kPa

      (0 mbar, 0 mmHg, 0 inHg)

      2.03 V

      40 kPa

      (400 mbar, 300 mmHg, 11.81 inHg)

      2.67 V

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace turbocharger boost sensor. Refer to Exploded View .