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Home >> Infiniti >> 2024 >> QX80 Premium Select, RWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 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
    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
      SYMBOLGNSDB145661Courtesy of NISSAN NORTH AMERICA, INC.
      [Engine is running]
      • Warm-up condition
      • Engine speed: 2, 000 rpm
      BATTERY VOLTAGE
      (11 - 14 V)SYMBOL
      SYMBOLGNSDB146555Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    Refer to Diagnosis Procedure .