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Home >> Nissan-Datsun >> 2023 >> Sentra SR >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Component/Circuit Diagnosis >> FRP Control System >> 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 follows.
        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 Removal and Installation .

  2. CHECK HIGH PRESSURE FUEL PUMP-2 
    1. SYMBOL With CONSULT:
      1. Reconnect high pressure fuel pump harness connector.
      2. Start the engine.
      3. Check "FUEL PRES SEN" in "DATA MONITOR" of "ENGINE" With CONSULT:
        Monitor item Condition Indication
        FUEL PRES SEN V
        • Engine: After warming up
        • Selector lever: P or N position
        • A/C switch: OFF
        • No load
        Engine speed: idle 0.820 - 1.140 V
        Revving engine from idle to 4, 000 RPM quickly 0.820 - 2.900 V
    2. SYMBOL Without CONSULT
      1. Start the engine.
      2. Check fuel rail pressure sensor signal voltage.
      + - Condition Voltage (Approx.)
      Fuel rail pressure sensor
      Connector Terminal
      F101 2 Ground [Engine is running]
      • Engine warm-up condition
      • Engine speed: Idle
      0.82 - 1.14 V
      [Engine is running]
      • Engine warm-up condition
      • Revving engine from idle to 4, 000 RPM quickly
      0.82 - 2.9 V

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    Replace high pressure fuel pump. Refer to Removal and Installation .