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Home >> Infiniti >> 2012 >> QX56 RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing (For MEXICO) >> Manifold Absolute Pressure Sensor >> Component Function Check

Component Function Check

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  1. CHECK MANIFOLD ABSOLUTE PRESSURE SENSOR FUNCTION

    WITH CONSULT

    1. Start engine.
    2. Check "MAP SENSOR" in "DATA MONITOR" mode with CONSULT.
      Monitor Item Condition Values/Status
      MAP SENSOR
      • Engine: After warming up
      • Selector lever: P or N position
      • A/C switch: OFF
      • No load
      Idle Approx. 1.0 V
      2, 000 rpm Approx. 1.35 V

    WITHOUT CONSULT

    1. Start engine.
    2. Check the voltage between ECM harness connector and ground.
      ECM Condition Voltage
      + -
      Connector Terminal Connector Terminal
      F110 67 E80 175 [Engine is running]
      • Warm-up condition
      • Idle speed
      1.2 V
      [Engine is running]
      • Warm-up condition
      • Engine speed: 2, 000 rpm
      1.5 V

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Proceed to "DIAGNOSIS PROCEDURE ".