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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Engine Control System (DTC/Circuit Diagnosis) (VQ35DE) (Except Hybrid) (2 Of 3)) >> DTC/Circuit Diagnosis >> DTC P0452: EVAP Control System Pressure Sensor >> Component Inspection >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

  1. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

    1. Turn ignition switch OFF.
    2. Remove EVAP control system pressure sensor with its harness connector. Refer to REMOVAL AND INSTALLATION .

      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 terminals under the following conditions.
      ECM Applied vacuum kPa
      (kg/cm2 , psi)      		 Voltage
      Connector + -
      Terminal Terminal
      E32 121 148 Not applied 1.8 - 4.8 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 REMOVAL AND INSTALLATION .

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