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Home >> Nissan-Datsun >> 2023 >> Sentra S >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Component/Circuit Diagnosis >> EVAP Control System Pressure Sensor >> Component Inspection
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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 connected from EVAP canister. 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 and ground under the following conditions.
        ECM Condition [Applied vacuum kPa (kg/cm, psi)] Voltage
        Connector + -
        Terminal
        E16 131 158 Not applied 0.5 - 4.6 V
        -26.7 (-0.272, -3.87) 2.1 to 2.5 V 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 Exploded View .