FixVault

EVAP Control System Pressure Sensor

  1. Remove EVAP control system pressure sensor with its harness connector connected.
  2. Remove EVAP control system pressure sensor 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 terminal 32 and ground under the following conditions.
    Fig 1: Applied Vacuum kPa And Voltage V Chart
    G00775474Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Installing A Vacuum Pump To EVAP Control System Pressure Sensor
    G00775475Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • Always calibrate the vacuum pump gauge when using it.
    • Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or pressure over 101.3 kPa (760 mmHg, 29.92 inHg).
  5. If NG, replace EVAP control system pressure sensor.