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Nissan Sentra B18 (2020-2025) Service Manual: 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 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/cm2, 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.

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