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Home >> Infiniti >> 2024 >> Q50 Sensory, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Component Parts/Circuit Diagnosis >> Fuel Rail Pressure Sensor >> Component Inspection
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Component Inspection

  1. CHECK FRP SENSOR 

    SYMBOL WITH CONSULT

    1. Turn ignition switch OFF.
    2. Reconnect harness connector disconnected.
    3. Start the engine.
    4. Select "DATA MONITOR" mode of "ENGINE" using CONSULT.
    5. Check that the "FUEL PRES SEN V" indication.
      Monitor Item Condition Values/Status
      FUEL PRES SEN V Engine speed: Idle 1, 140 - 1, 460 mV
      Engine speed: Revving engine from idle to 4, 000 rpm quickly 1, 300 - 2, 900 mV

    SYMBOL WITHOUT CONSULT

    1. Turn ignition switch OFF.
    2. Reconnect harness connector disconnected.
    3. Start the engine.
    4. Check FRP sensor signal voltage.
    ECM Condition Value
    (Approx.)
    Connector + -
    Terminal
    F143 47 85 [Engine is running]
    • Warm-up condition
    • Idle speed
    1.14 - 1.46 V
    [Engine is running]
    • Warm-up condition
    • Revving engine from idle to 4, 000 rpm quickly
    1.3 - 2.9 V

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    Replace FRP sensor. Refer to FUEL INJECTOR AND FUEL TUBE : Exploded View .