LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2005 >> Q45 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0441 To P1168 >> DTC P0452: EVAP Control System Pressure Sensor >> Component Inspection >> EVAP Control System Pressure Sensor
April 5, 2026: LEMON Manuals is launched! Read the announcement.

EVAP Control System 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.
    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 32 and ground with CONSULT-II or tester.
    VOLTAGE SPECIFICATION

    Applied vacuum kPa (mmHg, inHg) Voltage V
    Not applied 1.8 - 4.8
    -26.7 (-200 mmHg, -7.87) 2.1 to 2.5V lower than above value
    Fig 1: Checking Voltage Between ECM Terminal 32
    G02369502Courtesy of NISSAN MOTOR CO., U.S.A.
    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.
scientia non olet · About LEMON Manuals