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Home >> Infiniti >> 2012 >> FX50 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (VK50VE) - FX50 - DTC P0137 Through P0456 >> DTC P0452: EVAP Control System Pressure Sensor >> Component Inspection

Component Inspection

  1. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
    1. Turn ignition switch OFF.
    2. Remove EVAP control system pressure sensor with its harness connector. Refer to "VK50VE: EXPLODED VIEW ".

      Always replace O-ring with a new one. 

    3. Install a vacuum pump to EVAP control system pressure sensor.
    4. Turn ignition switch ON and check output voltage between ECM harness connector terminals under the following conditions:
    ECM Condition [Applied vacuum kPa (kg/cm2 , psi)] Voltage (V)
    Connector + -
    Terminal Terminal
    F111 80 70 Not applied 1.8 - 4.8
    -26.7 (-0.272, -3.87) 2.1 to 2.5 lower than above value
    CAUTION:
    • Always calibrate the vacuum pump gauge when using it.
    • Never apply below -93.3 kPa (-0.952 kg/cm2 , -13.53 psi) or pressure over 101.3 kPa (1.033 kg/cm2 , 14.69 psi).

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Replace EVAP control system pressure sensor. Refer to "VK50VE: EXPLODED VIEW ".

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