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Nissan Sentra B18 (2020-2025) Service Manual: Front Door Speaker

Diagnosis Procedure

Diagnosis Procedure

  1. CONNECTOR CHECK

    1. Check the AV control unit and speaker connectors for the following:

      • Proper connection

      • Damage

      • Disconnected or loose terminals

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Repair the terminals or connectors.

  2. CHECK FRONT DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY

      1. Disconnect AV control unit connector and suspect front door speaker connector.

      2. Check continuity between AV control unit connector and suspect front door speaker connector.

        AV control unit

        Front door speaker

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M92

        2

        D10 (LH)

        1

        Yes

        3

        2

        11

        D110 (RH)

        1

        12

        2

      3. Check continuity between AV control unit connector M92 and ground.

        AV control unit

        —

        Continuity

        Connector

        Terminal

        M92

        2

        Ground

        No

        3

        11

        12

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair or replace harness or connectors.

  3. CHECK FRONT DOOR SPEAKER SIGNAL

      1. Connect AV control unit connector and suspect front door speaker connector.

      2. Ignition switch ON.

      3. AV control unit ON.

      4. Check signal between the terminals of AV control unit connector.

        AV control unit

        Condition

        Reference value

        Connector

        (+)

        (−)

        Terminal

        Terminal

        M92

        2

        3

        Audio signal output

        11

        12

    Is the inspection result normal?

    YES >>

    Replace front door speaker. Refer to Removal and Installation.

    NO >>

    Replace AV control unit. Refer to Removal and Installation.

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