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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (4 Of 4)) >> DTC/Circuit Diagnosis >> Knock Sensor >> Component Inspection >> PR25DD engine

PR25DD engine

WARNING: This page is about a different variant/trim than selected.
  1. CHECK KNOCK SENSOR 1 
    1. Turn ignition switch OFF.
    2. Disconnect knock sensor 1 harness connector.
    3. Check resistance between knock sensor 1 terminals as per the following.
      NOTE: It is necessary to use an ohmmeter which can measure more than 10 MOhm.

    Knock sensor 1

    Resistance

    +

    -

    Terminals

    1

    2

    Approx. 532 - 588 kOhm [at 20 deg. C (68 deg. F)]

    CAUTION: Do not use any knock sensors that have been dropped or physically dama deg. Use only new ones.

    Is the inspection result normal?

    YES

    GO TO 2

    NO

    Replace knock sensor 1. Refer to Exploded View .

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

    Knock sensor 2

    Resistance

    +

    -

    Terminals

    1

    2

    Approx. 532 - 588 kOhm [at 20 deg. C (68 deg. F)]

    CAUTION: Do not use any knock sensors that have been dropped or physically dama deg. Use only new ones.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace knock sensor. Refer to Exploded View .