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Home >> Nissan-Datsun >> 2023 >> Sentra S >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Component/Circuit Diagnosis >> High Pressure Fuel Pump >> Component Inspection
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Component Inspection

  1. CHECK HIGH PRESSURE FUEL PUMP-1 
      1. Turn ignition switch OFF.
      2. Disconnect high pressure fuel pump harness connector.
      3. Check the resistance between high pressure fuel pump terminals as per the following conditions.
        High pressure fuel pump Condition Resistance
        Terminal
        1 2 Temperature [°C (°F)] 20 - 30 (68 - 86) 0.46 - 0.51 Ω

    Is the inspection result normal?

    YES>>

    GO TO 2.

    NO>>

    Replace high pressure fuel pump. Refer to Exploded View .

  2. CHECK HIGH PRESSURE FUEL PUMP-2 
    1. SYMBOL With CONSULT:
      1. Reconnect high pressure fuel pump harness connector.
      2. Start engine.
      3. Select "FUEL PRES SEN V" in "DATA MONITOR" mode of "ENGINE" using CONSULT and check the indication as per the following conditions.
        Monitor item Condition Indication
        FUEL PRES SEN V At idle 0.820 - 1.140 V
        Revving engine up to 4, 000 RPM quickly. 0.820 - 2.900 V
    2. SYMBOL Without CONSULT
      1. Start engine.
      2. Check fuel rail pressure sensor signal voltage.
      ECM Condition Voltage (Approx.)
      Connector + -
      Terminal
      F24 44 45 [Engine is running]
      • Warm-up condition
      • Idle speed
      0.82 - 1.14 V
      [Engine is running]
      • Warm-up condition
      • Engine speed: Revving engine from idle to 4, 000 RPM
      0.82 - 2.90 V

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    Replace high pressure fuel pump. Refer to Exploded View .