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Home >> Infiniti >> 2021 >> Q50 Pure, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Diagnostics) (3 Of 4) >> Component/Circuit Diagnosis >> High Pressure Fuel Pump >> Component Function Check >> VR30DDTT engine
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VR30DDTT engine

  1. CHECK HIGH PRESSURE FUEL PUMP FUNCTION 

    SYMBOL With CONSULT

    1. Start engine.
    2. Check "FUEL PRES SEN V" in "DATA MONITOR" mode of "ENGINE" using CONSULT.

      Monitor Item

      Condition

      Values/Status

      FUEL PRES SEN V

      Engine speed: Idle

      730 - 1, 000 mV

      Engine speed: Revving engine from idle to 4, 000 RPM quickly

      1, 000 - 2, 900 mV

    SYMBOL Without CONSULT

    1. Start engine.
    2. Check the voltage between ECM harness connector terminals as per the following conditions.

      ECM

      Condition

      Voltage

      Connector

      +

      -

      Terminal

      F143

      47

      85

      Engine speed: idle

      0.73 - 1.0 V

      Engine speed: Revving engine from idle to 4, 000 RPM quickly

      1.0 - 2.9 V

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Refer to Diagnosis Procedure .