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Home >> Infiniti >> 2013 >> M56 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0190 To P1084 >> DTC P0452: EVAP Control System Pressure Sensor >> Component Inspection (EVAP Control System Pressure Sensor)
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Component Inspection (EVAP Control System Pressure Sensor)

  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 "EXCEPT FOR MEXICO: 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
      M160 143 175 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 "EXCEPT FOR MEXICO: EXPLODED VIEW ".

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