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Home >> Infiniti >> 2021 >> Q50 Pure, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (3 Of 4) >> Component/Circuit Diagnosis >> Fuel Rail Pressure Sensor >> Component Inspection >> VR30DDTT engine
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VR30DDTT engine

  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 .