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Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 4) >> DTC/Circuit Diagnosis >> DTC P1078, P1084: EVT Control Position Sensor >> Component Inspection (Exhaust Valve Timing Control Position Sensor) >> Diagnostic Test
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Diagnostic Test

  1. EXHAUST VALVE TIMING CONTROL POSITION SENSOR-I

    1. Turn ignition switch OFF.
    2. Disconnect exhaust valve timing control position sensor harness connector.
    3. Loosen the fixing bolt of the sensor.
    4. Remove the sensor. Refer to EXPLODED VIEW WITH TORQUE SPECIFICATIONS .
    5. Visually check the sensor for chipping.
      G04886800Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Replace malfunctioning exhaust valve timing control position sensor. Refer to EXPLODED VIEW WITH TORQUE SPECIFICATIONS .

  2. EXHAUST VALVE TIMING CONTROL POSITION SENSOR-II

    Check resistance exhaust valve timing control position sensor terminals as shown below.

    Terminals Resistance
    1 (+) - 2 (-) Except 0 or ∞Ω [at 25°C (77°F)]
    1 (+) - 3 (-)
    2 (+) - 3 (-)

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    Replace malfunctioning exhaust valve timing control position sensor. Refer to EXPLODED VIEW WITH TORQUE SPECIFICATIONS .

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