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Home >> Infiniti >> 2009 >> FX50 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Symptom Diagnosis, On-Vehicle Repair And Specifications (VK50VE) >> Manifold Pressure Sensor >> Component Inspection
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Component Inspection

  1. CHECK MANIFOLD PRESSURE SENSOR
    1. Turn ignition switch OFF.
    2. Reconnect all harness connectors disconnected.
    3. Start engine and warm it up to normal operating temperature.
    4. Check the voltage between ECM harness connector terminals under the following conditions.
      VOLTAGE REFERENCE CHART

      ECM Condition Voltage (V)
      Connector + -
      Terminal Terminal
      F111 69 (Manifold pressure sensor) 70 (Sensor ground) Engine speed Idle Approx. 1.2
      2, 000 RPM Approx. 1.5

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Replace manifold pressure sensor.

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