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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control System >> Refrigerant Pressure Sensor >> Diagnostic Procedure >> 1. Check Refrigerant Pressure Sensor Overall Function
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1. Check Refrigerant Pressure Sensor Overall Function

  1. Start engine and warm it up to normal operating temperature.
  2. Turn A/C switch and blower switch ON.
  3. Check voltage between ECM terminal 88 and ground with CONSULT-II or tester.
    Fig 1: Checking Voltage Between ECM Terminal & Ground
    G00796704Courtesy of NISSAN MOTOR CO., U.S.A.

    Voltage: 1.0 - 4.0V 

OK or NG 

  1. OK: INSPECTION END 
  2. NG: GO TO 2.