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Home >> Infiniti >> 2022 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (Diagnostics) (1 Of 2) >> Component/Circuit Diagnosis >> High Pressure Fuel Pump >> Component Function Check
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Component Function Check

  1. CHECK HIGH PRESSURE FUEL PUMP FUNCTION 

    SYMBOL WITH CONSULT

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

      Monitor Item

      Condition

      Values/Status

      FUEL PRES SEN V

      Engine speed: Idle

      820 - 1, 220 mV

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

      820 - 3, 060 mV

    SYMBOL WITHOUT CONSULT

    1. Start engine.
    2. Check the voltage between ECM harness connector and ground.

      ECM

      Condition

      Voltage

      +

      -

      Connector

      Terminal

      Connector

      Terminal

      F92

      59

      E20

      152

      [Engine is running]

      • Warm-up condition
      • Idle speed
        NOTE: The pulse cycle changes depending on RPM at idle

      BATTERY VOLTAGE

      (11 - 14 V) SYMBOL

      SYMBOLGNSJPBIA3340Z-340Courtesy of NISSAN NORTH AMERICA, INC.

      [Engine is running]

      • Warm-up condition
      • Engine speed: 2, 000 RPM

      BATTERY VOLTAGE

      (11 - 14 V) SYMBOL

      SYMBOLGNSJPBIA3341Z-341Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Refer to Diagnosis Procedure .