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Home >> Infiniti >> 2011 >> M56 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 295 (Engine Control System - Component Testing) >> Refrigerant Pressure Sensor >> Component Function Check

Component Function Check

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WARNING: This page is about a different car, the 2011 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK REFRIGERANT PRESSURE SENSOR FUNCTION
    1. Start engine and warm it up to normal operating temperature.
    2. Turn A/C switch and blower fan switch ON.
    3. Check the voltage between ECM harness connector terminals as per the following.
      VOLTAGE REFERENCE

      ECM Voltage (V)
      Connector + -
      Terminal Terminal
      M107 105 (Refrigerant pressure sensor signal) 112 1.0 - 4.0

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Go to "DIAGNOSIS PROCEDURE ".

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