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Home >> Nissan-Datsun >> 2009 >> Xterra SE, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0181 To P0550 >> P0452 EVAP Control System Pressure Sensor >> Component Inspection >> EVAP Control System Pressure Sensor

EVAP Control System Pressure Sensor

  1. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister.

    Do not reuse the O-ring, replace it with a new one. 

  2. Install a vacuum pump to EVAP control system pressure sensor.
  3. Turn ignition switch ON and check output voltage between ECM terminal 32 and ground under the following conditions.
    Fig 1: Checking Output Voltage Between ECM Terminal 32 And Ground
    G04900507Courtesy of NISSAN MOTOR CO., U.S.A.
    VOLTAGE REFERENCE CHART

    Applied vacuum kPa (kg/cm2 , psi) Voltage V
    Not applied 1.8 - 4.8
    -26.7 (-0.272, -3.87) 2.1 to 2.5V 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 , 14.59 psi).
  4. If NG, replace EVAP control system pressure sensor.
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