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Home >> Infiniti >> 2024 >> Q50 Luxe, RWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Component Parts/Circuit Diagnosis >> High Pressure Fuel Pump >> Component Function Check
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Component Function Check

  1. CHECK HIGH PRESSURE FUEL PUMP FUNCTION SYMBOL
    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 .