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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0452: EVAP Control System Pressure Sensor >> Diagnostic Procedure >> 7. Check EVAP Control System Pressure Sensor Input Signal Circuit For Open And Short

7. Check EVAP Control System Pressure Sensor Input Signal Circuit For Open And Short

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  1. Check harness continuity between ECM terminal 110 and EVAP control system pressure sensor terminal 2.

    Refer to WIRING DIAGRAM .

    Continuity should exist. 

  2. Also check harness for short to ground and short to power.

OK or NG 

  1. OK: GO TO 9. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT .
  2. NG: GO TO 8.