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Home >> Nissan-Datsun >> 2021 >> Sentra S >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Components/Circuit Diagnosis >> Knock Sensor >> Component Inspection
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Component Inspection

  1. CHECK KNOCK SENSOR 
    1. Turn ignition switch OFF.
    2. Disconnect knock sensor harness connector.
    3. Check resistance between knock sensor terminals as follows.
      NOTE: It is necessary to use an ohmmeter which can measure more than 10 MOhms.

    Knock sensor

    Condition

    Resistance

    Terminal

    1

    2

    Temperature

    20 deg. C (68 deg. F)

    532 - 588 kOhms

    CAUTION: Never use any knock sensors that have been dropped or physically damaged. Use only new ones.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace malfunctioning knock sensor. Refer to Exploded View .