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Home >> Infiniti >> 2011 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0137 Through P0456 >> DTC P0340, P0345: CMP Sensor >> Component Inspection (Camshaft Position Sensor)

Component Inspection (Camshaft Position Sensor)

  1. CHECK CAMSHAFT POSITION SENSOR-I
    1. Turn ignition switch OFF.
    2. Loosen the fixing bolt of the sensor.
    3. Disconnect camshaft position sensor harness connector.
    4. Remove the sensor.
    5. Visually check the sensor for chipping.

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Replace malfunctioning camshaft position sensor.

      Fig 1: Checking Camshaft Position Sensor-I
      G04886870Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK CAMSHAFT POSITION SENSOR-II

    Check resistance camshaft position sensor terminals as per the following.

    RESISTANCE SPECIFICATION

    Terminals (Polarity) 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 camshaft position sensor. Refer to "EXPLODED VIEW ".