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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 >> Fuel Injector >> Component Function Check

Component Function Check

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  1. INSPECTION START 
    1. Turn ignition switch to START.

    Are any cylinders ignited?

    YES>>

    GO TO 2.

    NO>>

    Refer to Diagnosis Procedure .

  2. CHECK FUEL INJECTOR FUNCTION 
    1. SYMBOL With CONSULT:
      1. Start engine.
      2. Perform "POWER BALANCE" in "ACTIVE TEST" mode of "ENGINE" With CONSULT:
      3. Check that each circuit produces a momentary engine speed drop.
    2. SYMBOL Without CONSULT
      1. Start engine and let it idle.
      2. Listen to each fuel injector operating sound.
        GNSDB37132Courtesy of NISSAN
        Clicking sound should be heard.

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    Refer to Diagnosis Procedure .