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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0453: EVAP Control System Pressure Sensor >> Component Inspection >> EVAP Control Pressure Sensor
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EVAP Control Pressure Sensor

  1. Remove EVAP control system pressure sensor with its harness connector connected.
  2. Remove hose from EVAP control system pressure sensor.
  3. Install a vacuum pump to EVAP control system pressure sensor.
  4. Turn ignition switch ON.
  5. Use pump to apply vacuum and pressure to EVAP control system pressure sensor as shown in figure Figure.
    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).
  6. Check voltage between ECM terminal 110 and ground with CONSULT-II or tester. See Figure.
    CAUTION: Discard any EVAP control system pressure sensor which has dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such a concrete floor; use a new one.
  7. If NG, replace EVAP control system pressure sensor.